Shanghai Daoqin Plastics Co., Ltd.

  use metal or powder through injection molding process production complex parts
        如今, use powder material injection molding technology main/primary used for manufacturing industrial use complex parts. powder injection molding is remove its it molding process （ precision and toward or pressure made ） outer types can selection process.
        in recent years, use or metal powder manufacturing injection molding parts application areas main/primary automotive industrial, tool industrial, magnetic production, textile industrial, table/sheet industrial, use product, precision engineering, medical and technology and industrial.
        in ARBURG PIM 实验室, can through 实际观看 sample production understanding powder injection molding advantages.  
           
table/sheet 1: metal and 陶瓷组 parts type 公差

        powder injection molding technology make parts amount production formed is can can, is using/adopting machine processing or pressure made technology 进行批 amount production already again is types has methods. injection molding technology make parts design and manufacturing process tool has 几乎无限 自由 degree.
        powder injection molding manufacturing process molding parts injection molding, and 烧结. parts 公差由 below/following important factors 确定:
        ● bonding agent content
        ● powder features
        ● mixed combined process
        ● injection molding parameters
        ● heavy force deformation
        ● in pallet upper sliding property can
        
        can use material scope/range 广泛
        upper, has fine pellets, can powder can and versus bonding agent mixed combined in injection molding machine upper processing. oxidation 陶瓷, metal, carbon material and nitrogen material.
        due to mixed combined and injection molding equipment in powder material process in to relatively strong/high abrasion loss, therefore selection degree can can small powder 末. relatively fine powder can reduce surface coarse degree, from in processing process in reduce abrasion loss improve/increase strong/high degree. various powder material property can scope/range table/sheet 3 in 示.
         
table/sheet 2: in 严格 公差 scope/range inner high heavy property  
       bonding agent make powder can use injection molding
        for bonding agent most important requirements is: process in dimensional stability, good features, and powder material reaction, very high parts strong/high degree, good demolding features, heat stabilized property and in process in easy remove can full remove.
        bonding agent and powder pellets between viscous force also can can high, in injection molding process in increase high pressure make 两 组份 separation 离, 而导致 filling parts non-uniform. is obtain good injection molding features low shrinkage rate obtain uniform quality, using/adopting powder 末.
        
        tool has most ratio bonding agent and powder 末
        in mixed combined process in, bonding agent and powder mixed combined formed types mixed combined material, raw materials. market upper has metal powder and powder raw materials 供货商. supply material product types more, 并不断 launch new product.
        therefore, MIM（ metal injection molding ） or CIM（陶瓷 injection molding ） 需 raw materials is formed, can used for injection molding, again need internal made as. if can use material property can can separation meet/satisfy applications, 专业化 材 material 供货商 can development production need raw materials.
        
        injection molding process in processing steps
        use raw materials （ powder 末/ bonding agent mixed combined material ） manufacturing molding parts process and plastics injection molding process versus 似.
        ▲ 预塑
        in mono in, raw materials bonding agent separation in temperature degree function lower 熔化.
        ▲ injection molding
        plastics mixed combined material in high pressure lower by injection molding to solid in plant/unit in mold in. mold maintain combined, meanwhile molding parts hard 化.
        ▲ mold opening
        in parts cooling rear, nozzle through injection molding plant/unit from mold 位置移开. plant/unit 打开, injection molding machine system 会自动 ejection molding parts.
        ▲ parts demolding
        use machine system from mold in easy parts 而不造 formed loss bad. in powder material injection molding 时, recommendation use process 保护绿 parts 免受震动 or impact, from 而避免 loss molding parts quality.
         
 

        and amount production
        material and mold more can in to 20 separation inner formed, this make it suitable for production (Just-In-Time Production). due to tool has various 自动化选 parts, therefore can in 无需操 as more and lower, for metal or powder manufacturing parts achieve amount production.
        injection molding machine structure
        screw injection molding machine 由锁模 plant/unit, injection molding plant/unit and control system formed. semi formed mold solid in plant/unit in. plant/unit tool has 静止模 sheet/plate （即 谓 solid sheet/plate ） and can 移动范本. 当锁模 plant/unit combined and mold combined 闭时, can 注入材 material. through 打开锁模 plant/unit 而打开 mold 时, can will molding parts 脱出.
        injection molding plant/unit structure
        injection molding machine upper injection molding plant/unit screw （ used for material, pressure shrink mixed combined material remove bubbles ）, add hot system （ will mixed combined material add hot to temperature degree ） and nozzle （经 pressure shrink and add hot material through nozzle in pressure lower injection molding to mold in ）构 formed. injection molding machine has and production process can through control function add 以协调 control. adjustment parameters 一经确定, can to data upper, from ensure front use production cycle can heavy property. in production process in, can 自动识别并 separation combined parts and combined parts.
        injection molding mold
        plastics injection molding molding technology in commonly used mold equipment （如 slip sheet/plate, machine 构, 脱螺纹 plant/unit and internal pressure device ）也 can used for powder material injection molding. 不, due to powder 末/ bonding agent 熔化材 material tool has abrasion property, therefore must mold type and injection molding plant/unit anti abrasion loss （例如 through hard process or alloy ）.
        from green molding pressure block in remove bonding agent
        in process in, bonding agent through catalytic agent, understanding or hot separation understanding function from parts in remove.
        process can 借助于 can has accelerated chemical reaction 顺序 适宜炉 temperature and 氛围 进行. bonding agent by remove rear, molding parts formed more easy 碎 模 type, 即 谓 “棕 parts “. in 此情况 lower, parts through a small amount of bonding agent and 范德瓦尔斯 force maintain stability. according to use bonding agent system, must according to suitable requirements for 脱脂炉进行专门 adjustment.
        脱脂炉必 must tool has non good gas ring features. 唯一 例 outer is need in process in parts bonding agent system. formed waste gas must through lower system 进行处理（例如 through 二次燃烧 or use catalytic device ）.
        
        formed machine stability bonding 效果
        is solid bonding color molding pressure block pellets, parts need in more high temperature degree in 进行烧结（ most high 达2000℃）.
        according to ring conditions, temperature degree - time and pressure separation 配情况, 该工序 similar pressure 烧结部 parts use process. through expand dispersion and / or liquid generate and 晶体生 long formed most molding parts.
         
 
 
 

        injection molding parts most high can to 99.9% 理论材 material density. in selection powder 末 情况 lower, parts can toward property shrinkage, in process in direction upper shrinkage amount versus and other. parts features is tool has uniform features. in injection molding process in formed defect method through 烧结进行修复.
        in rear 改良工序 in, large more 就 需配 combined or 者刃口打 abrasion. in metal or injection molding in, fine powder and combined mold surface can ensure high surface quality.
        is toward 感兴趣 人实际演示 powder material processing and its has important process steps, ARBURG 建立 自己 PIM 实验室.
        in 此, from raw materials development, and injection molding to molding parts and 烧结, has steps can in 实验室 conditions lower testing.
        
        ARBURG deep expert can toward 客户说明每 循 ring steps fine 节, 例如, powder and bonding agent mixed combined ratio/proportion, “绿 parts ” production, rear methods, and machine and mold design.
         
 

        ARBURG PIM 实验室
        PIM 实验室 can is development production 1/2 rise left right to 100 rise powder raw materials mixed combined material. is optimization raw materials material features, necessary also can will raw materials formed 均质 粒状 material material.
        该实验室装备 has various necessary equipment, can currently market upper has process. for/regarding use HNO3 and N2 catalytic 脱脂, 实验室 tool has amount is 60 rise 炉. hot can in 120 rise inner 进行. use 特殊 循 ring gas system; can for has parts uniform 脱脂.
        in Soxlet system in, also can use various solvent agent （丙 ketone, alcohol and other ） for parts 进行脱脂.
        一台直径 is 145 mm, has long degree is 220 mm tube/pipe can used for 烧结. H2, Ar or N2 以 and this gas mixed combined material can used as inner gas 体.
        oxidation property material can in add hot 箱式炉 inner in oxidation property gas lower to 1700℃. has 效容积 is 1.2 rise.  

        summary
        powder injection molding combined complex, high degree molding parts large amount production; for tool has inner 螺纹, difficult processing and 不规则 surface parts achieve simple, 自动化 production, meanwhile ensure color surface quality.
        powder material injection molding benefits 包括:
        ● 批 amount production
        ● use process method production parts can 一步完 formed production
        ● achieve complex molding parts design
        ● can fast speed adjustment production
        ● molding parts surface quality high
        ● molding parts dimensional stability high
        ● parts 无需费时 consumption again processing
        ● can 自动化 production
        ● production basic 无浪费