China WEL Techno Co., LTD. company news

In the rapidly evolving industrial landscape of today, plastic materials have become an indispensable component due to their superior performance and broad range of applications. They are not only ubiquitous in everyday life but also play a crucial role in numerous fields such as high-tech industries, medical equipment, automotive manufacturing, aerospace, and beyond. With the continuous advancement of material science, the variety and performance of plastic materials are ever-increasing, presenting engineers and designers with more choices and challenges. How to select the most suitable plastic material from the myriad of options for a specific application has become a complex yet critical issue.This article aims to provide a comprehensive guide to help readers understand the basic properties of plastic materials, processing techniques, performance requirements, and how they impact the performance and cost of the final product. We will discuss the chemical and physical characteristics of various plastic materials, analyze their performance under different environmental and application conditions, and offer practical selection advice. By delving into the process of selecting plastic materials, we hope to assist readers in making informed decisions during the product design and development phase, ensuring the reliability, durability, and economic efficiency of the products.Following this preface, we will embark on a journey into the world of plastic materials, exploring their secrets and learning how to apply this knowledge to practical product design. Whether you are an experienced engineer or a newcomer to the field of material science, we hope that this article will provide you with valuable information and inspiration. Let us begin this journey together to uncover the mysteries of plastic material selection.   Plastic Material Selection   To date,over ten thousand types of resins have been reported,with thousands of these being industrially produced.The selection of plastic materials involves choosing an appropriate variety from the vast array of resin types.At first glance,the multitude of plastic varieties available can be overwhelming.However,not all resin types have been widely applied.The selection of plastic materials we refer to is not arbitrary but is filtered within the commonly used resin types.     Principles for Plastic Material Selection:   I.Adaptability of Plastic Materials • Comparative performance of various materials; • Conditions not suitable for plastic selection; • Conditions suitable for plastic selection.   II.Performance of Plastic Products Usage Conditions of Plastic Products: a.Mechanical stress on plastic products; b.Electrical properties of plastic products; c.Dimensional precision requirements of plastic products; d.Permeability requirements of plastic products; e.Transparency requirements of plastic products; f.Appearance requirements of plastic products. Usage Environment of Plastic Products: a.Ambient temperature; b.Ambient humidity; c.Contact media; d.Light,oxygen,and radiation in the environment.   III.Processing Performance of Plastics • Processability of plastics; • Processing costs of plastics; • Waste generated during plastic processing.   IV.Cost of Plastic Products • Price of plastic raw materials; • Service life of plastic products; • Maintenance costs of plastic products.     In the actual selection process,some resins have very similar properties,making it difficult to choose.Which one to choose is more appropriate requires multifaceted consideration and repeated weighing before a decision can be made.Therefore,the selection of plastic materials is a very complex task,and there are no obvious rules to follow.One thing to note is that the performance data of plastic materials cited from various books and publications are measured under specific conditions,which may differ significantly from actual working conditions.     Material Selection Steps: When faced with the design drawings of a product to be developed,material selection should follow these steps: • First,determine whether the product can be manufactured using plastic materials; • Second,if it is determined that plastic materials can be used for manufacturing,then which plastic material to choose becomes the next factor to consider.     Selection of Plastic Materials Based on Product Precision: Precision Grade Available Plastic Material Varieties 1 None 2 None 3 PS, ABS, PMMA, PC, PSF, PPO, PF, AF, EP, UP, F4, UHMW, PE 30%GF reinforced plastics (30%GF reinforced plastics have the highest precision) 4 PA types, chlorinated polyether, HPVC, etc. 5 POM, PP, HDPE, etc. 6 SPVC, LDPE, LLDPE, etc.   Indicators for Measuring the Heat Resistance of Plastic Products: The commonly used indicators are heat deflection temperature,Martin heat resistance temperature,and Vicat softening point,with heat deflection temperature being the most commonly used.   Heat Resistance Performance of Common Plastics(Unmodified):   Material Heat Deflection Temperature Vicat Softening Point Martin Heat Resistance Temperature HDPE 80℃ 120℃ - LDPE 50℃ 95℃ - EVA - 64℃ - PP 102℃ 110℃ - PS 85℃ 105℃ - PMMA 100℃ 120℃ - PTFE 260℃ 110℃ - ABS 86℃ 160℃ 75℃ PSF 185℃ 180℃ 150℃ POM 98℃ 141℃ 55℃ PC 134℃ 153℃ 112℃ PA6 58℃ 180℃ 48℃ PA66 60℃ 217℃ 50℃ PA1010 55℃ 159℃ 44℃ PET 70℃ - 80℃ PBT 66℃ 177℃ 49℃ PPS 240℃ - 102℃ PPO 172℃ - 110℃ PI 360℃ 300℃ - LCP 315℃ - -         Principles for Selecting Heat-Resistant Plastics:   • Consider the level of heat resistance: a.Meet the heat resistance requirements without choosing too high,as it may increase costs; b.Preferably use modified general plastics.Heat-resistant plastics mostly belong to special plastics,which are expensive;general plastics are relatively cheaper; c.Preferably use general plastics with a large margin of heat resistance modification.     • Consider heat resistance environmental factors: a.Instantaneous and long-term heat resistance; b.Dry and wet heat resistance; c.Resistance to medium corrosion; d.Oxygen and oxygen-free heat resistance; e.Loaded and unloaded heat resistance.     Heat Resistance Modification of Plastics: Filled Heat Resistance Modification: Most inorganic mineral fillers,except for organic materials,can significantly improve the heat resistance temperature of plastics.Common heat-resistant fillers include:calcium carbonate,talc,silica,mica,calcined clay,alumina,and asbestos.The smaller the particle size of the filler,the better the modification effect. • Nano fillers: • PA6 filled with 5%nano montmorillonite,the heat deflection temperature can be raised from 70°C to 150°C; • PA6 filled with 10%nano meerschaum,the heat deflection temperature can be raised from 70°C to 160°C; • PA6 filled with 5%synthetic mica,the heat deflection temperature can be raised from 70°C to 145°C. • Conventional fillers: • PBT filled with 30%talc,the heat deflection temperature can be raised from 55°C to 150°C; • PBT filled with 30%mica,the heat deflection temperature can be raised from 55°C to 162°C. Reinforced Heat Resistance Modification: Enhancing the heat resistance of plastics through reinforcement modification is even more effective than filling.Common heat-resistant fibers mainly include:asbestos fiber,glass fiber,carbon fiber,whiskers,and poly.   • Crystalline resin reinforced with 30%glass fiber for heat resistance modification: • PBT's heat deflection temperature is raised from 66°C to 210°C; • PET's heat deflection temperature is raised from 98°C to 238°C; • PP's heat deflection temperature is raised from 102°C to 149°C; • HDPE's heat deflection temperature is raised from 49°C to 127°C; • PA6's heat deflection temperature is raised from 70°C to 215°C; • PA66's heat deflection temperature is raised from 71°C to 255°C; • POM's heat deflection temperature is raised from 110°C to 163°C;   • PEEK's heat deflection temperature is raised from 230°C to 310°C. • Amorphous resin reinforced with 30%glass fiber for heat resistance modification: • PS's heat deflection temperature is raised from 93°C to 104°C; • PC's heat deflection temperature is raised from 132°C to 143°C; • AS's heat deflection temperature is raised from 90°C to 105°C; • ABS's heat deflection temperature is raised from 83°C to 110°C; • PSF's heat deflection temperature is raised from 174°C to 182°C; • MPPO's heat deflection temperature is raised from 130°C to 155°C.     Plastic Blending Heat Resistance Modification   Blending plastics to enhance heat resistance involves incorporating high heat-resistant resins into low heat-resistant resins,thereby increasing their heat resistance.Although the improvement in heat resistance is not as significant as that achieved by adding heat-resistant modifiers,the advantage is that it does not significantly affect the original properties of the material while enhancing heat resistance.     • ABS/PC:The heat deflection temperature can be increased from 93°C to 125°C; • ABS/PSF(20%):The heat deflection temperature can reach 115°C; • HDPE/PC(20%):The Vicat softening point can be increased from 124°C to 146°C; • PP/CaCo3/EP:The heat deflection temperature can be increased from 102°C to 150°C.     Plastic Crosslinking Heat Resistance Modification Crosslinking plastics to improve heat resistance is commonly used in heat-resistant pipes and cables. • HDPE:After silane crosslinking treatment,its heat deflection temperature can be increased from the original 70°C to 90-110°C; • PVC:After crosslinking,its heat deflection temperature can be increased from the original 65°C to 105°C. Specific Selection of Transparent Plastics   I.Daily Use Transparent Materials: • Transparent film:Packaging uses PE,PP,PS,PVC,and PET,etc.,agricultural uses PE,PVC,and PET,etc.; • Transparent sheets and panels:Use PP,PVC,PET,PMMA,and PC,etc.; • Transparent tubes:Use PVC,PA,etc.; • Transparent bottles:Use PVC,PET,PP,PS,and PC,etc.   II.Lighting Equipment Materials: Mainly used as lamp shades,commonly used PS,modified PS,AS,PMMA,and PC.     III.Optical Instrument Materials: • Hard lens bodies:Mainly use CR-39 and J.D; • Contact lenses:Commonly use HEMA.   IV.Glass-like Materials: • Automotive glass:Commonly use PMMA and PC; • Architectural glass:Commonly use PVF and PET.   V.Solar Energy Materials: Commonly used PMMA,PC,GF-UP,FEP,PVF,and SI,etc. VI.Optical Fiber Materials: Core layer uses PMMA or PC,and the cladding layer is a fluoro-olefin polymer,fluorinated methyl methacrylate type. VII.CD Materials: Commonly used PC and PMMA. VIII.Transparent Encapsulation Materials: Surface-hardened PMMA,FEP,EVA,EMA,PVB,etc.   Specific Material Selection for Different Purposes of Housings   • TV Housings: • Small size:Modified PP; • Medium size:Modified PP,HIPS,ABS,and PVC/ABS alloys; • Large size:ABS. • Refrigerator Door Liners and Inner Liners: • Commonly use HIPS boards,ABS boards,and HIPS/ABS composite boards; • Currently,ABS is the main material,only Haier refrigerators use modified HIPS. • Washing Machines: • Inner buckets and covers mainly use PP,a small amount uses PVC/ABS alloys. • Air Conditioners: • Use reinforced ABS,AS,PP. • Electric Fans: • Use ABS,AS,GPPS. • Vacuum Cleaners: • Use ABS,HIPS,modified PP. • Iron: • Non-heat resistant:Modified PP; • Heat resistant:ABS,PC,PA,PBT,etc. • Microwave Ovens and Rice Cookers: • Non-heat resistant:Modified PP and ABS; • Heat resistant:PES,PEEK,PPS,LCP,etc. • Radios,Tape Recorders,Video Recorders: • Use ABS,HIPS,etc. • Telephones: • Use ABS,HIPS,modified PP,PVC/ABS,etc.  

In the product design process, surface roughness is a crucial parameter that directly affects the appearance, performance, and service life of a product. Different production processes will determine the final surface roughness of the product. Here are some common production processes and their achievable surface roughness ranges along with their characteristics:     Surface roughness of various machining methods Machining Method Machining Method Machining Method Surface Roughness (Ra/μm) Surface Roughness (Rz/μm) Automatic gas cutting, band saw or circular saw cutting Automatic gas cutting, band saw or circular saw cutting Automatic gas cutting, band saw or circular saw cutting >10~80 >40~320 Cutting Turning Turning >10~80 >40~320 Cutting Milling Milling >10~40 >40~160 Cutting Grinding wheel Grinding wheel >1.25~5 >6.3~20 Turning outer circle Rough turning Rough turning >5~20 >20~80 Turning outer circle Semi-finish turning Metal >2.5~10 >10~40 Turning outer circle Semi-finish turning Non-metal >1.25~5 >6.3~20 Turning outer circle Finish turning Metal >0.63~5 >3.2~20 Turning outer circle Finish turning Non-metal >0.32~2.5 >1.6~10 Turning outer circle Fine turning Metal >0.16~1.25 >0.8~6.3 Turning outer circle (or diamond turning) Non-metal >0.08~0.63 >0.4~3.2 Turning end face Rough turning   >5~20 >20~80 Turning end face Semi-finish turning Metal >2.5~10 >10~40 Turning end face Semi-finish turning Non-metal >1.25~10 >6.3~20 Turning end face Finish turning Metal >1.25~10 >6.3~40 Turning end face Finish turning Non-metal >1.25~10 >6.3~40 Turning end face Fine turning Metal >0.32~1.25 >1.6~6.3 Turning end face Fine turning Non-metal >0.16~1.25 >0.8~6.3 Slotting One pass One pass >10~20 >40~80 Slotting Two passes Two passes >2.5~10 >10~40 High-speed turning High-speed turning High-speed turning >0.16~1.25 >0.8~6.3 Drilling ≤f15mm ≤f15mm >2.5~10 >10~40 Drilling >f15mm >f15mm >5~40 >20~160 Boring Rough (with skin) Rough (with skin) >5~20 >20~80 Boring Finish Finish >1.25~10 >6.3~40 Counterboring (hole) Counterboring (hole) Counterboring (hole) >1.25~5 >6.3~20 Guided counterboring plane Guided counterboring plane Guided counterboring plane >2.5~10 >10~40 Boring Rough boring   >5~20 >20~80 Boring Semi-finish boring Metal >2.5~10 >10~40 Boring Semi-finish boring Non-metal >1.25~10 >6.3~40 Boring Finish boring Metal >0.63~5 >3.2~20 Boring Finish boring Non-metal >0.32~2.5 >1.6~10 Boring Fine boring Metal >0.16~1.25 >0.8~6.3 Boring (or diamond boring) Non-metal >0.16~0.63 >0.8~3.2 High-speed boring High-speed boring High-speed boring >0.16~1.25 >0.8~6.3 Cylindrical milling Rough Rough >2.5~20 >10~80 Milling Finish Finish >0.63~5 >3.2~20   Fine Fine >0.32~1.25 >1.6~6.3 Reaming Semi-fine reaming Steel >2.5~10 >10~40 Reaming (first reaming) Brass >1.25~10 >6.3~40 Reaming Fine reaming Cast iron >0.63~5 >3.2~20 Reaming (second reaming) Steel, light alloy >0.63~2.5 >3.2~10 Reaming   Brass, bronze >0.32~1.25 >1.6~6.3 Reaming Fine reaming Steel >0.16~1.25 >0.8~6.3 Reaming Fine reaming Light alloy >0.32~1.25 >1.6~6.3 Reaming Fine reaming Brass, bronze >0.08~0.32 >0.4~1.6 End mill Rough Rough >2.5~20 >10~80 Milling Finish Finish >0.32~5 >1.6~20   Fine Fine >0.16~1.25 >0.8~6.3 High-speed milling Rough Rough >0.63~2.5 >3.2~10 High-speed milling Finish Finish >0.16~0.63 >0.8~3.2 Planing Rough Rough >5~20 >20~80 Planing Finish Finish >1.25~5 >6.3~20 Planing Fine (polishing) Fine (polishing) >0.16~1.25 >0.8~6.3 Planing Groove surface Groove surface >2.5~10 >10~40 Slotting Rough Rough >10~40 >40~160 Slotting Finish Finish >1.25~10 >0.3~40 Pulling Rough Rough >0.32~2.50 >1.6~10 Pulling Finish Finish >0.08~0.32 >0.4~1.6 Pushing Finish Finish >0.16~1.25 >0.8~6.3 Pushing Fine Fine >0.02~0.63 >0.1~3.2 External cylindrical grinding Semi-finish Semi-finish >0.63~10 >3.2~40 Internal cylindrical grinding Finish Finish >0.16~1.25 >0.8~3.2   Fine Fine >0.08~0.32 >0.4~1.6   Precision trimmed grinding wheel grinding Precision trimmed grinding wheel grinding >0.02~0.08 >0.1~0.4   Mirror grinding (external cylindrical grinding) Mirror grinding (external cylindrical grinding) 1.6~6.3 Surface grinding Fine Fine >0.04~0.32 >0.2~1.6 Honing Rough (first processing) Rough (first processing) >0.16~1.25 >0.8~6.3 Honing Fine (fine) Fine (fine) >0.02~0.32 >0.1~1.6 Lapping Rough Rough >0.16~0.63 >0.8~3.2 Lapping Finish Finish >0.04~0.32 >0.2~1.6 Lapping Fine (polishing) Fine (polishing) 0.4~6.3 Superfinishing Fine Fine >0.04~0.16 >0.2~0.8 Superfinishing Mirror surface (two processes) Mirror surface (two processes) 3.2~20 Scraping Finish Finish >0.04~0.63 >0.2~3.2 Polishing Finish Finish >0.08~1.25 >0.4~6.3 Polishing Fine (mirror surface) Fine (mirror surface) >0.02~0.16 >0.1~0.4 Polishing Sand belt polishing Sand belt polishing >0.08~0.32 >0.4~1.6 Polishing Sandpaper polishing Sandpaper polishing >0.08~2.5 >0.4~10 Polishing Electro-polishing Electro-polishing >0.01~2.5 >0.05~10 Thread machining Cutting Die, tap, >0.63~5 >20~3.2 Thread machining Cutting Self-opening die head >0.63~5 >20~3.2 Thread machining Cutting Lathe tool or comb >0.63~10 >3.2~40 Thread machining Cutting >0.63~10 >3.2~40 Tool lathe, milling Thread machining Cutting Grinding >0.16~1.25 >0.8~6.3 Thread machining Cutting Lapping >0.04~1.25 >0.2~6.3 Thread rolling Thread rolling Thread rolling >0.63~2.5 >3.2~10 Key machining Cutting Rough rolling >1.25~5 >6.3~20   Cutting Fine rolling >0.63~2.5 >3.2~10   Cutting Fine inserting >0.63~2.5 >3.2~10   Cutting Fine planing >0.63~5 >3.2~20   Cutting Pulling >1.25~5 >6.3~20   Cutting Shaving >0.16~1.25 >0.8~6.3   Cutting Grinding >0.08~1.25 >0.4~6.3   Cutting Research >0.16~0.63 >0.8~3.2   Rolling Hot rolling >0.32~1.25 >1.6~6.3   Rolling Cold rolling >0.08~0.32 >0.4~1.6 Hydraulic processing Hydraulic processing Hydraulic processing >0.04~0.63 >0.2~3.2 File work File work File work >0.63~20 >3.2~80 Grinding wheel cleaning Grinding wheel cleaning Grinding wheel cleaning >5~80 >20~320

Choosing the Right Plastic Material:A Comprehensive Guide   Introduction: In the vast world of materials science,plastic materials stand out for their versatility and wide range of applications.Whether you're designing a consumer product,engineering a component,or specifying materials for construction,the choice of plastic can significantly impact the performance,cost,and sustainability of your project.This comprehensive guide will walk you through the critical factors to consider when selecting the right plastic material for your specific needs.   Choosing the Right Plastic Material:A Comprehensive Guide Material Chemical Properties Physical Properties Typical Applications Processing Notes POM - Resistance to chemicals: Good resistance to oils, fats, and solvents- Water resistance: Fair - Mechanical properties: High rigidity, high strength, wear resistance- Thermal resistance: Continuous use temperature -40°C to 100°C, Heat Deflection Temperature 136°C (homopolymer) / 110°C (copolymer)- Electrical properties: Excellent electrical insulation and arc resistance Gears, bearings, high-load components - Injection molding temperature: 190°C to 240°C- Drying: Not usually required, but recommended to prevent hydrolysis PC - Chemical resistance: Resistant to water, inorganic salts, bases, and acids- Flame retardancy: UL94 V-2 rating - Mechanical properties: Combination of rigidity and toughness- Thermal stability: Melting temperature 220°C to 230°C, decomposition temperature above 300°C- Dimensional stability: Excellent creep resistance- Optical properties: Good transparency Electrical and commercial equipment, appliances, transportation industry - Poor flow, difficult injection molding- Drying: Recommended at 80-90°C ABS - Chemical resistance: Resistant to water, inorganic salts, bases, and acids- Flame retardancy: Combustible, poor heat resistance - Comprehensive physical and mechanical properties: High impact strength, good low-temperature impact resistance- Dimensional stability: Good- Electrical properties: Good Automotive, refrigerators, high-strength tools, telephone housings, etc. - Low water absorption, but drying is necessary to prevent moisture effects- Melting temperature 217~237°C, decomposition temperature >250°C PVC - Chemical resistance: Strong resistance to oxidizing agents, reducing agents, and strong acids- Flame retardancy: Not easily combustible - Physical properties: High strength, climate resistance- Thermal resistance: Important melting temperature during processing Water supply pipes, household pipes, wall panels, etc. - Poor flow characteristics, narrow processing range- Low shrinkage rate, generally 0.2~0.6% PA6 - Chemical resistance: Resistant to greases, petroleum products, and many solvents- Flame retardancy: UL94 V-2 rating - Mechanical properties: High tensile strength, high flexural strength- Thermal properties: Continuous use temperature 80°C to 120°C- Water absorption: About 2.8% Engineering plastics, automotive, machinery, electronics, etc. - Drying treatment: 100-110°C for 12 hours- Melting point: 215°C to 225°C PA - Chemical resistance: Resistant to greases, petroleum products, and many solvents- Flame retardancy: UL94 V-2 rating - Mechanical properties: High mechanical strength, wear resistance- Thermal properties: High softening point, heat resistant- Water absorption: High water absorption, affecting dimensional stability Gears, pulleys, bearings, impellers, etc. - Hygroscopic, must be dried before molding PMMA - Chemical resistance: Good weather resistance, optical properties - Optical properties: Colorless and transparent- Mechanical properties: High strength- Thermal resistance: Average Signs, safety glass, lighting fixtures, etc. - Drying: Not usually required PE - Chemical resistance: Good resistance to drugs - Physical properties: Lightweight and flexible- Thermal resistance: Low-density polyethylene has a low heat deflection temperature Films, bottles, electrical insulating materials, etc. - Melt flow index affects melt fluidity PP - Chemical resistance: Good resistance to drugs - Physical properties: Lightweight and flexible- Thermal resistance: Higher softening point- Chemical resistance: Resistant to acids, bases, and salts Films, plastic ropes, tableware, etc. - Drying: Not usually required PPS - Chemical resistance: Good resistance to most chemicals - Thermal resistance: Continuous use temperature 200-240°C- Mechanical properties: High strength and rigidity- Flame retardancy: Self-extinguishing material Electrical connectors, electrical components - Drying: 120-140°C for 3-4 hours- Processing temperature: 290-330°C PET - Chemical resistance: Good heat and drug resistance - Mechanical properties: Good electrical insulation- Thermal resistance: Suitable for various high-temperature environments Packaging materials - Drying: Recommended PBT - Chemical resistance: Resistant to a variety of chemicals - Thermal properties: Continuous use temperature up to 80°C to 120°C- Water absorption: Low water absorption rate Automotive, electronics, electrical appliances, etc. - Drying: Recommended

       Selecting the appropriate rubber material requires consideration of multiple factors,including usage conditions,design requirements,testing requirements,material specification selection,and cost.Here are some key points to help you choose the right rubber material:     1.Usage Conditions Considerations   • Contact Media:Consider the liquids,gases,solids,and chemical agents the rubber will come into contact with.   • Temperature Range:Consider the minimum and maximum temperatures at which the rubber will operate.   • Pressure Range:Consider the minimum compression ratio when the sealing parts are under pressure.   • Static or Dynamic Use:Choose materials based on whether the rubber parts are used statically or dynamically.     2.Design Requirements Considerations   • Combination Considerations:Consider the compatibility of rubber with other materials.   • Chemical Reactions:Consider possible chemical reactions during use.   • Service Life:Consider the expected service life of rubber parts and potential failure causes.   • Lubrication and Assembly Methods:Consider the lubrication and assembly methods of components.   • Tolerances:Consider the tolerance requirements for rubber parts.     3.Testing Requirements Considerations   • Testing Standards:Define the testing standards for rubber parts.   • Sample Confirmation:Decide whether sample confirmation is needed.   • Acceptance Standards:Set the acceptance standards for rubber parts.   • Main Sealing Surface:Set requirements for the main sealing surface.     4.Material Specification Selection   • Standard Selection:Decide which material specification to use,such as American ASTM,German DIN,Japanese JIS,Chinese GB,etc.   • Supplier Discussion:Discuss with suppliers to define the selection of rubber materials.   • Quality-Stable Suppliers:Choose suppliers with stable product quality.     5.Cost Considerations   • Suitable Rubber Material:Choose the right rubber material to avoid using expensive and impractical rubber materials.   Here is an overview of common rubber materials, their specifications, and properties: Rubber Material Overview Characteristics Applications NBR (Nitrile Rubber) Obtained by emulsion polymerization of butadiene and acrylonitrile, known as butadiene-acrylonitrile rubber, or simply nitrile rubber. Best oil resistance, insoluble in nonpolar and weakly polar oils. Superior aging resistance compared to natural and styrene-butadiene rubbers. Good wear resistance, 30-45% higher than natural rubber. Used for oil-contact hoses, rollers, gaskets, seals, tank linings, and large oil bladders. Suitable for transporting hot materials. EPDM (Ethylene-Propylene Diene Monomer) Copolymer synthesized from ethylene and propylene. Excellent aging resistance, known as "crack-free" rubber. Outstanding resistance to chemicals. Automotive parts: including tire sidewalls and side wall covers. Electrical products: including high, medium, and low voltage cable insulation materials. Industrial products: resistant to acids, bases, ammonia, and oxidizing agents; various hoses, gaskets; heat-resistant conveyor belts and transmission belts. Building materials: rubber products for bridge engineering, rubber flooring, etc. Other applications: rubber boats, swimming pool air pads, diving suits, etc. Silicone Rubber (VQM) Refers to a class of elastic materials with Si-O units in the molecular chain and single-unit side chains as mono-valent organic groups, collectively called organopolysiloxanes. Both heat and cold resistant, maintaining elasticity in the range of -100°C to 300°C. Excellent ozone and weathering resistance. Good electrical insulation; its properties change little when wet, in contact with water, or when the temperature rises. Widely used in aviation, aerospace, automotive, metallurgy, and other industrial sectors. Also widely used as medical materials. HNBR (Hydrogenated Nitrile Rubber) Made by hydrogenating nitrile rubber to remove some double bonds, resulting in improved resistance to heat, weather, and oil compared to general nitrile rubber. Better wear resistance than nitrile rubber. Excellent resistance to corrosion, tension, and compression deformation. Used in automotive engine systems and seals. Widely applied in environmental refrigerant R134a systems. ACM (Acrylic Rubber) Made from Alkyl Ester Acrylate as the main component. Good resistance to oxidation and weathering. Has the function of resisting deformation. Used in automotive transmission systems and power system seals. SBR (Styrene-Butadiene Rubber) A copolymer of styrene and butadiene, with uniform quality and fewer foreign particles compared to natural rubber. Low-cost, non-oil-resistant material. Good water resistance, with good elasticity below 70° hardness. Widely used in tires, hoses, belts, shoes, automotive parts, wires, cables, and other rubber products. FPM (Fluorocarbon Rubber) A class of synthetic polymer elastomers with fluorine atoms in the main chain or side chains. Excellent high-temperature resistance (can be used long-term at 200°C and can withstand short-term temperatures above 300°C). Widely used in modern aviation, missiles, rockets, spacecraft, and other high-tech fields, as well as in the automotive, shipbuilding, chemical, petroleum, telecommunications, and mechanical industries. FLS (Fluorinated Silicone Rubber) Silicone rubber treated with fluorine, combining the advantages of both fluorine rubber and silicone rubber. Good resistance to chemicals, fuels, and high and low temperatures. Used in space and aerospace components. CR (Chloroprene Rubber) Made from the polymerization of 2-chloro-1,3-butadiene, a type of high molecular weight elastomer. High mechanical performance, comparable to natural rubber in tensile strength. Used for making hoses, belts, cable sheaths, printing rollers, boards, gaskets, and various seals and adhesives. IIR (Butyl Rubber) Made from the copolymerization of isobutylene with a small amount of isoprene, retaining a small amount of unsaturated bases for vulcanization. Has impermeability to most general gases. Used for rubber parts resistant to chemicals, vacuum equipment. NR (Natural Rubber) Made from the sap of plants, processed into a highly elastic solid. Excellent physical and mechanical properties, elasticity, and processing performance. Widely used in tires, belts, hoses, shoes, rubber cloth, and daily, medical, and sports products. PU (Polyurethane Rubber) Contains a large number of isocyanate groups in the molecular chain, with excellent mechanical properties, high hardness, and high elasticity. High tensile strength. Large elongation. Wide hardness range. Widely used in the automotive industry, machinery industry, electrical and instrument industry, leather and footwear industry, construction, medical, and sports fields.

The Advancements and Applications of CNC MachiningArticle:CNC machining has revolutionized the manufacturing industry, offering precise and efficient production methods. Among the various CNC technologies, CNC 5 axis machining stands out as a remarkable innovation.CNC machining, in its essence, involves the use of computer numerical control systems to control machine tools.   This technology enables the creation of complex and highly accurate components with consistency and quality that was previously difficult to achieve.The advent of CNC 5 axis machining has taken this precision and flexibility to a whole new level. Traditional 3-axis machines can only move along three linear axes, limiting the shapes and geometries that can be produced.   However, a 5-axis CNC machine adds two additional rotational axes, allowing for more complex and intricate cuts from multiple directions simultaneously. One of the significant advantages of CNC 5 axis machining is its ability to produce parts with superior surface finish. The multi-directional cutting reduces the need for secondary operations, resulting in smoother and more refined surfaces.   This is crucial in industries where aesthetics and performance are equally important, such as in the production of medical devices and consumer electronics.Another advantage is the enhanced tool access. With the additional rotational axes, the cutting tool can reach areas that would be otherwise inaccessible with conventional machining methods.   This leads to greater design freedom and the ability to manufacture parts with complex internal structures.CNC 5 axis machining also improves productivity. Components that previously required multiple setups and operations can now be completed in a single setup, reducing production time and minimizing errors. This not only saves costs but also speeds up the time-to-market for new products.In the aerospace industry, where lightweight and highly engineered components are essential, CNC 5 axis machining is indispensable.   It enables the production of turbine blades, engine parts, and structural components with tight tolerances and complex geometries.   The automotive sector also benefits from this technology, as it allows for the creation of intricate engine blocks, transmission parts, and custom suspension components.CNC production, in general, has opened up new possibilities for industries across the board.   It has made mass customization feasible, allowing for the production of small batches of highly specialized parts economically.In conclusion, CNC machining, especially the advanced form of CNC 5 axis, has become a driving force in modern manufacturing. It continues to evolve, enabling businesses to stay competitive and meet the ever-increasing demands for high-quality, complex products.

On January 15, 2024, WEL Co., Ltd. obtained a patent for "a CNC rapid prototyping fixture for machining parts".   This fixture can complete the machining of five surfaces in one clamping, fully utilizing the characteristics of multi axis linkage and multi angle surface machining of five axis machine tools. It is not only convenient for workpiece clamping, but also only requires rough blanks along the shape of the workpiece, greatly improving machining efficiency, saving blank materials, and improving the appearance machining quality of parts.     CNC loading and unloading solution for a leading international automotive industry enterprise: A leading international automotive industry enterprise from Canada, specializing in the manufacturing of automotive parts and industrial products, providing manufacturing solutions and developing engineering products for customers.   The enterprise adopts the CNC loading and unloading solution for the automotive industry using the JAKA Pro 16 collaborative robot. With its excellent long-term operational capabilities, the JAKA Pro 16 collaborative robot has improved the production efficiency and product quality stability of the factory's production line. Its advantages include: the robot's positioning accuracy can reach ± 0.02mm, supplemented by visual inspection equipment, eliminating the risk of loading and unloading workpieces on both sides and defective workpieces, ensuring high-precision production;   Equipped with IP68 level safety protection capability, it can avoid the influence of cutting fluid on lathes and grinders, achieve uninterrupted bidirectional operation for 7 × 24 hours, and achieve high cycle production of single workpiece machine loading and unloading within 10 seconds, greatly improving factory production efficiency and yield. Jieka Robot has independently developed integrated joint technology, with a compact structure and a simple and diverse programming system, which can meet the planning of complex motion paths in small spaces and can be quickly deployed. It can cooperate with automated production equipment to carry out operations within 1 hour, easily achieving multi cycle joint operation links and multi variety product switching, meeting the short cycle and fast update needs of the automotive industry production line, and reducing the ROI cycle to within 1 year.   In addition, by replacing two manual workers with one robot, frontline employees can be transformed into robot managers, focusing on tasks such as product quality control and process optimization.   In order to solve the problem of the gap between domestic automotive engine technology and the world's advanced level, Huaya CNC Machine Tool Co., Ltd. has developed models such as pentahedral machining centers and dual spindle drilling and tapping centers to help the development of the automotive manufacturing industry. Among them, the pentahedral machining center adopts a combination of vertical, horizontal, and rotary indexing, which can achieve turning, milling, and pentahedral machining. It can replace the robot assembly line of multiple processing equipment for composite machining of large parts, truly saving costs, energy, manpower, and production areas, breaking the traditional machining mode, improving spatial accuracy, and enhancing product quality. It is widely used in LED light boxes, new energy, communication and other pressure casting cavities.   The dual spindle drilling and tapping center adopts a dual spindle, dual column, and dual tool magazine structure design, which can achieve dual spindle linkage machining and improve efficiency by 100%. This structure has obtained a national patent. Its high-speed processor system is independently developed with software design, which can process two identical parts at once;   The machine tool is equipped with a dual tool magazine, which is conducive to multi process machining of complex workpieces; The tool length is automatically corrected, and the tool magazine can change tools asynchronously with phase frequency. It also has the characteristics of dual spindle high-speed and same frequency tapping.   One machine has twice the efficiency, and with the same production capacity, it saves twice the space and reduces labor by twice.  

Building Trust Without a Digital Platform: A Guide for Overseas Clients   In today’s digital world, we’ve come to rely on online platforms to validate businesses, establish credibility, and inspire confidence. But for companies in industries like manufacturing, especially small or family-run businesses, an online presence may not always be robust. As someone who runs a CNC machining factory specializing in support tubes, rod ends, and control cable components, I know firsthand the challenges of building trust with new overseas prospects without relying on a large digital footprint. For those of you wondering, “How can I trust a company that isn’t on all the major platforms?” let me share a few insights into how trust can still be built through transparency, authenticity, and relationship-building. 1. Highlighting Proven Experience and Established Track Record While a website or online reviews are often the first places people look for credibility, they’re not the only ways to demonstrate reliability. Businesses like ours often rely on years of experience, repeat clients, and successful projects to speak for our quality. To build trust with new prospects, I make sure to share: Years in Operation: How long we’ve been in the industry and what we specialize in. Client References: Satisfied clients who are open to sharing their experiences with potential prospects. Certifications and Quality Assurance: Documents that showcase the standards we uphold, including certifications in materials, processes, or quality control. This approach offers potential clients a deeper look into our credibility through actual business history, not just online profiles. 2. Providing Transparent Communication Channels Since we may not have a polished website or active social media presence, transparency in communication becomes our strongest asset. I personally ensure that every prospective client has direct communication with our team, including myself, so they can ask questions, address concerns, and understand our processes thoroughly. This includes: Virtual Tours: Offering virtual tours of our factory to let clients see our setup and equipment, even if they’re halfway across the world. Direct Contact: Providing a consistent point of contact so they can build familiarity and see our dedication to each inquiry. Detailed Quotations and Process Explanations: Going beyond just pricing by explaining how we achieve our pricing, timelines, and quality standards. Through this direct and transparent communication, clients can better assess our dedication and feel more secure about working with us. 3. Offering Small Orders and Flexible Payment Terms Trust is built over time, but when the first step feels risky, it’s important to lower that barrier. For new clients, I often offer the option of smaller initial orders or samples, along with flexible payment terms, so they can experience our quality and professionalism firsthand before committing to a full-scale order. This approach reassures prospects by showing that: We are confident in our product: We’re willing to work in smaller batches to let our quality speak for itself. We value long-term partnerships over short-term gains: This step demonstrates our commitment to establishing trust and building sustainable business relationships. 4. Building Relationships Through Consistent Results In manufacturing, reliability is everything. After that initial order or two, what solidifies a client’s trust is consistency in quality, lead time, and service. This is where our dedication to quality control and process integrity really shines. We aim to meet, if not exceed, expectations on every order so that new clients experience the same high standards each time they work with us. In the absence of a strong online presence, reputation is often built and maintained through word-of-mouth and referrals. It’s the results we deliver that ultimately earn us trust. 5. Future Plans to Expand Our Digital Presence While we are focused on our production and client relationships, we also understand the value of having an online footprint. We’re actively working to build a presence that aligns with the trustworthiness of our operations. For clients who value traditional references, we’re here to provide them. For those who want the convenience of digital validation, we’re on our way. Conclusion: Trusting Beyond the Platform In today’s global market, a lack of digital presence doesn’t necessarily mean a lack of reliability. For clients willing to take the first step, companies like ours offer quality, transparency, and relationship-driven service. We believe that trust can still be built through the commitment to doing great work, one project at a time. If you’re considering working with a business without an online platform, I encourage you to look beyond the website. Sometimes, the strongest partners are the ones quietly focused on delivering excellence in every product they make.