Shanghai Daoqin Plastics Co., Ltd.

metal powder injection molding technology (Metal Powder  ction Molding, 简称MIM) is will plastics injection formed technology powder 末冶金 field/area formed new type powder 末冶金近净形 formed technology. its basic process process is: will solid powder and has machine adhesion agent uniform mixed 练, made rear in add thermoplastic 化状态 lower (～150℃) use injection formed machine mold cavity inner solid formed 形, rear use chemical or hot separation understanding methods will formed in adhesion agent remove, most rear 经烧结致密化 to most product. and process versus ratio, tool has degree high, uniform, property can excellent, production cost low and other features, its product widely used in electronics engineering, material medical devices, office equipment, automotive, machine 械, 五金, device 械, table/sheet 业, device and aviation aerospace and other industrial field/area. therefore, upper 普遍认 is technology development will 会导致零部 parts formed and processing technology revolutionary, by is “当今 most hot 门 零部 parts formed technology ” and “21世纪 formed technology ”.
　　 USA add 州Parmatech company 于1973 year 发明, year Europe many 国家以 and Japan 也都投入极 large force research technology, to speed 推广. especially is year in 期, this technology achieve industry more obtain 突飞猛进 development, year 都以惊人 speed degree increase. to currently is 止, USA, 西欧, Japan and other more and has more company from process technology product development, made and sales as. Japan in competition upper separation 积极, and performance 突出, many large type 株式会社均参 and MIM industrial 推广, this company has 太平洋 metal, Mitsubishi made 钢, made iron, made 钢, Sumitomo 矿山, 精工--爱普生, large 同特殊钢 and other. currently Japan has more 家专业 from 事MIM industry company, its MIM industrial product sales value already ultra- Europe 并直追 USA. to currently is 止, full already has 百余家 company from 事该项 technology product development, made and sales as, MIM technology therefore formed is new type manufacturing in most is active front technology field/area, by world industry property technology, table/sheet powder 末冶金 technology development direction MIM technology
　　 metal powder injection molding technology is plastics molding process 学, polymer/macromolecule chemical, powder 末冶金 process and metal material and other more 学科透 and 交叉 产 material, utilizing mold can injection molding parts through fast speed manufacturing high density, high degree, complex structure parts, can fast speed will design material is tool has structure, function features products, can 直接批 amount production parts, is manufacturing technology industry one-time new 变革. process technology not only tool has powder 末冶金 process less, 无切削 or less 切削, 经济效益 high and other advantages, but also 克服 传统 powder 末冶金 process products, non-uniform, mechanical properties low, easy molding thin 壁, complex structure disadvantages, especially combined large amount production small type, complex and tool has requirements metal parts. process process/workflow adhesion agent → mixing/compounding → injection formed 形→脱脂→烧结→ rear 处理
　　 powder metal powder 末
　　MIM process use metal powder pellets dimensions generally in 0.5~20μm; from upper 讲, pellets fine, ratio surface 积也越 large, easy molding and 烧结. 而传统 powder 末冶金 process using/adopting large 于40μm relatively coarse powder 末. has machine viscous agent 　　 has machine viscous agent function is bonding metal powder pellets, make mixed combined material in injection machine material in add hot tool has property and lubricated property, is belt/tape powder flow 载体. therefore, bonding agent selection is powder 末 载体. therefore, viscous selection is powder injection molding key/critical

metal powder injection molding technology (Metal Powder ※※※※ction Molding, 简称MIM) is will plastics injection formed technology powder 末冶金 field/area formed new type powder 末冶金近净形 formed technology. its basic process process is: will solid powder and has machine adhesion agent uniform mixed 练, made rear in add thermoplastic 化状态 lower (～150℃) use injection formed machine mold cavity inner solid formed 形, rear use chemical or hot separation understanding methods will formed in adhesion agent remove, most rear 经烧结致密化 to most product. and process versus ratio, tool has degree high, uniform, property can excellent, production cost low and other features, its product widely used in electronics engineering, material medical devices, office equipment, automotive, machine 械, 五金, device 械, table/sheet 业, device and aviation aerospace and other industrial field/area. therefore, upper 普遍认 is technology development will 会导致零部 parts formed and processing technology revolutionary, by is “当今 most hot 门 零部 parts formed technology ” and “21世纪 formed technology ”.
　　 USA add 州Parmatech company 于1973 year 发明, year Europe many 国家以 and Japan 也都投入极 large force research technology, to speed 推广. especially is year in 期, this technology achieve industry more obtain 突飞猛进 development, year 都以惊人 speed degree increase. to currently is 止, USA, 西欧, Japan and other more and has more company from process technology product development, made and sales as. Japan in competition upper separation 积极, and performance 突出, many large type 株式会社均参 and MIM industrial 推广, this company has 太平洋 metal, Mitsubishi made 钢, made iron, made 钢, Sumitomo 矿山, 精工--爱普生, large 同特殊钢 and other. currently Japan has more 家专业 from 事MIM industry company, its MIM industrial product sales value already ultra- Europe 并直追 USA. to currently is 止, full already has 百余家 company from 事该项 technology product development, made and sales as, MIM technology therefore formed is new type manufacturing in most is active front technology field/area, by world industry property technology, table/sheet powder 末冶金 technology development direction MIM technology
　　 metal powder injection molding technology is plastics molding process 学, polymer/macromolecule chemical, powder 末冶金 process and metal material and other more 学科透 and 交叉 产 material, utilizing mold can injection molding parts through fast speed manufacturing high density, high degree, complex structure parts, can fast speed will design material is tool has structure, function features products, can 直接批 amount production parts, is manufacturing technology industry one-time new 变革. process technology not only tool has powder 末冶金 process less, 无切削 or less 切削, 经济效益 high and other advantages, but also 克服 传统 powder 末冶金 process products, non-uniform, mechanical properties low, easy molding thin 壁, complex structure disadvantages, especially combined large amount production small type, complex and tool has requirements metal parts. process process/workflow adhesion agent → mixing/compounding → injection formed 形→脱脂→烧结→ rear 处理
　　 powder metal powder 末
　　MIM process use metal powder pellets dimensions generally in 0.5~20μm; from upper 讲, pellets fine, ratio surface 积也越 large, easy molding and 烧结. 而传统 powder 末冶金 process using/adopting large 于40μm relatively coarse powder 末. has machine viscous agent 　　 has machine viscous agent function is bonding metal powder pellets, make mixed combined material in injection machine material in add hot tool has property and lubricated property, is belt/tape powder flow 载体. therefore, bonding agent selection is powder 末 载体. therefore, viscous selection is powder injection molding key/critical. for has machine bonding agent requirements:

1. use amount less, use relatively less bonding agent can make mixed combined material generate relatively good property;
　　2.不 reaction, in remove bonding agent process in and metal powder 末不起任何 chemical reaction;
　　3. easy remove, in products inner 不残留 carbon.

mixed material
　　 metal powder and has machine bonding agent uniform mixed in 一起, make various raw materials formed is injection molding use mixed combined material. mixed combined material uniform degree effect/influence its flow property, effect/influence injection molding process parameters, most material density and its it property can. injection formed 形本步 process process and plastics injection molding process process in principle upper is 一致, its equipment conditions basic same. in injection molding process in, mixed combined material in injection machine material inner by add hot formed tool has property property material material, in injection pressure lower mold in, molding 出毛坯. injection molding micro upper uniform 一致, from make products in process in uniform shrinkage. 萃取
　　 molding in front must remove inner has has machine bonding agent, process is 萃取. process must ensure bonding agent from different 部位沿 颗 material between micro small 通道逐渐 排出, reduce strong/high degree. adhesion agent troubleshooting speed rate generally expand dispersion 方程. 烧结烧结 can make more 孔 脱脂毛坯 shrinkage 至密化 formed is tool has 一定组织 and property can products. tube/pipe products property can and front many process factors has 关, in many lower, process for most products versus and property can has very large, 甚至决定 property effect/influence. rear 处理
　　 for/regarding dimensions requirements relatively is precision parts, need necessary rear 处理. this and metal products hot 处理工序 same. MIM process features MIM process and its it processing process comparison
　　MIM use raw materials powder 末粒径 in 2-15μm, 而传统 powder 末冶金 原 powder powder 末粒径 large more in 50-100μm. MIM process formed product density high, causes is use micro fine powder 末. MIM process tool has powder 末冶金 process advantages, 而形状 upper degree high is powder 末冶金 不 can to. powder 末冶金限于 mold strong/high degree and filling density, large more is 二维圆柱 type.
　　传统 precision 铸造脱燥 process is types made as complex product has technology, year use 陶心辅助 can formed 狭缝, deep formed product, is 碍于陶心 strong/high degree, and liquid flow property made, process still has certain technology upper difficult. generally 而言, process manufacturing large, in type parts relatively is combined 适, small type complex parts 则以MIM process relatively is combined 适. comparison project manufacturing process MIM process powder 末冶金 process powder 末粒径(μm)2-1550-100 versus for density (%)95-9880-85 product weight (g) small or and other 于400克10-数百 product 形状三维 complex 形状二维 simple mechanical properties excellent poor
　　MIM made and powder 末冶金 method comparison pressure process use in aluminum and zinc alloy and other melting point low, liquid flow property good material. process product material made, its strong/high degree, wear resistance, resistant property has degree. MIM process can processing Raw Materials relatively more.
　　 precision process, although in in recent years its product degree and complex degree improve/increase, still ratio upper wax process and MIM process, powder 末锻造 is important development, already suitable for amount manufacturing. is generally 而言, engineering in hot cost and mold lifespan also is has issues, still 待进一步 solution.
传统 machine processing method, 近 靠自动化而 improves its processing can force, in and degree upper has large 进步, is basic upper still 脱不开逐步 processing (车削, 刨, 铣, abrasion, 钻孔, light and other) formed parts methods. machine processing methods processing degree excellent other processing methods, is is material has utilizing rate low, its 形状 完 formed 受限于 equipment and tool, has parts method use machine processing formed. versus 反, MIM can has utilizing material, 不受限 made, for/regarding small type, high difficult degree precision parts manufacturing, MIM process comparison machine processing 而言, its cost relatively low efficiency high, tool has very strong/high competition force.
　　MIM technology non and processing methods competition, is 弥补传统 processing methods in technology upper or method made as defect. MIM technology can in processing methods made as parts field/area upper its long. MIM process in parts manufacturing tool has technology advantages can molding high degree complex structure structure parts
　　 injection molding process technology utilizing injection machine injection molding product 毛坯, ensure material material separation mold type 腔, ensure parts high complex structure achieve. in processing technology in as formed parts again combined formed parts methods, in use MIM technology can 考虑整 combined formed mono parts, large large decrease/reduce steps, processing 程序. MIM and other metal processing method comparison products dimensions degree high, 不必进行二次 processing or a small amount of processing
　　 injection molding process can molding thin 壁, complex structural parts, products already most product requirements, parts dimensions generally maintain in ±0.1-±0.3 left right. especially for/regarding reduce difficult 于进行 machine processing hard alloy processing cost, decrease/reduce heavy metal processing loss especially tool has important 意义. products micro uniform, density high, property can good
　　 in pressure made process in due to and powder and powder and powder between scratch force, make pressure made pressure distribution non non-uniform, 也就导致 pressure made in micro upper non-uniform, this 样就会造 formed pressure made powder 末冶金 parts in process in shrinkage non-uniform, therefore 不 不 reduce temperature degree decrease/reduce this type of 效应, from make products degree large, material property 差, density low, heavy effect/influence products mechanical properties. injection molding process is types molding process, bonding agent in powder uniform from can remove micro upper non-uniform, make products density can to its material density. generally lower pressure made product density most high can to density 85%. products high property can make strong/high degree increase, tough property add strong/high, property, conductive thermally conductive property to improvement, magnetic property can improve/increase. efficiency high, easy achieve large amount and 规模化 production
　　MIM technology use metal mold, its lifespan and engineering plastics injection molding tool mold versus 当. due to use metal mold, MIM适 combined parts a large amount of production. due to utilizing injection machine molding product 毛坯, large improve/increase production efficiency, reduce production cost, but also injection molding product property, heavy property good, from is large amount and 规模化 industrial production provide ensure. suitable material scope/range wide, application areas vast (iron 基, low alloy, high speed 钢, 不锈钢, alloy, hard alloy)
can used for injection molding material non 常广泛, upper can high temperature powder material can 由MIM process formed parts, 包括 传统 manufacturing process in difficult processing material and high melting point material. in addition, MIM也 can according to use requirements 进行材 material formulation research, manufacturing 任意组 combined alloy material, will composite/compounding material molding is parts. injection molding products application areas already and 国民经济各 field/area, tool has vast market outlook/prospects. injection molding products property can and cost analysis
　　MIM process using/adopting micron grade fine powder 末, can accelerated shrinkage, has improve/increase material force property can, long material fatigue lifespan, also can improvement resistant, resistant force and magnetic property can. table/sheet 1 in 列出一 MIM材 material basic property can. material density g/cm3 hardness tensile strength MPa flexural strength MPa elongation %矫顽 force (A/cm) iron alloy 98Fe2Ni7.4187HRB552----5.5----92Fe8Ni7.5088HRB560----8----95.5Fe2NiCu0.5Mo7.4099HRB682----3.3----不锈钢3047.4242HRB520----20----3167.6042HRB520----20---- hard alloy YG614.60--------1460----173YG814.50--------1680----124YT1510.45--------1140----117钨 alloy 90%W17.90320HV30920----6----93%W18.30310HV30900----10----97%W18.50350HV30880----6----
　　注: *该 data is versus for density MIM process cost analysis for/regarding hard, difficult 以切削 材 material or 几何形状 complex, 铸造时 raw materials has or parts, using/adopting MIM process can large degree cost. processing machine printing parts is 例, usually 需14道 can upper can lower upper 工序; using/adopting MIM process 需6道工序, can 节约一 semi left right cost. material cost / manufacturing cost ratio rate increase 时, in cost more can reduce. therefore parts small complex, 经济效益 will good. through above analysis, can 看出MIM molding force is very large.