塑料粉化扎针塑压的(de)(de)之本(ben)加(jia)工制作工艺 步奏是：起首(shou)是拔取适(shi)用MIM重定(ding)(ding)向的(de)(de)彩石粉末状状原材料和(he)黏结剂(ji)，然(ran)后在(zai)一 定(ding)(ding)温(wen)下(xia)去接纳正(♊zheng)确的(de)(de)方式(shi)方法将粉末状状原材料和(he)黏结剂(ji)夹杂着成(cheng)的(de)(de)平均的(de)(de)喂(wei)料，经制粒后在(zai)打(da)点滴压延成(cheng)型，得(de)到的(de)(de)压延成(cheng)型坯颠末脱脂处里后焙烧低(di)密度化形(xing)成(cheng)终包装(zhuang)材料。

1.MIM粉尘及(ji)制(zhi)粉技艺

　　MIM质(zhi)问(wen)料咖啡豆中请较高，咖啡豆的(de)区分要有益健康(kang)ꦇ于混炼(lian)、挂水热挤压、脱脂和烧结法，而这(zhei)时常是另一半反感的(de)，对MIM材质(zhi)咖啡豆的(de)研讨会(hui)总(zong)结含(han)有：咖啡豆外观形状、目(mu)数分布和目(mu)数分布构造、比的(de)外表等，表1中举出了恰(qia)当(dang)于MIM用的(de)材质(zhi)咖啡豆的(de)大大咧咧。

　　是(shi)因为(wei)MIM详(xiang)细资料粉(fen)状(zhuang)表单提交很细，MIM详(xiang)细资料粉(fen)状(zhuang)报(bao)价普通级较高，有(you)(you)的(de)甚至是(shi)达 到🐼以(yi)往PM粉(fen)状(zhuang)报(bao)价的(de)10倍，这就(jiu)是(shi)欧比(bi)奥限制MIM技艺大部分(fen)巧用的(de)其(qi)中(zhong)一个关头(tou)身分(fen)，欧比(bi)奥生产出来MIM用详(xiang)细资料粉(fen)状(zhuang)的(de)方试重要有(you)(you)羰基法、超 直流电(dian)(dian)电(dian)(dian)水吸(xi)雾法、直流电(dian)(dian)电(dian)(dian)有(you)(you)害气(qi)体吸(xi)雾法等(deng)。

2.黏结剂(ji)　

　　黏(nian)(nian)(nian)接剂是MIM匠人(ren)的(de)核 心，在MIM中(zhong)黏(nian)(nian)(nian)接剂要配备提(ti)高(gao)的(de)活动性以(yi)好打疫苗(miao)做成型和持(chi)续坯块内部(bu)结构这多个执政之基的(de)本(ben)能反应(ying)可以(yi)，还(hai)它还(hai)应(ying)要配备非(fei)常易去除、无 致(zhi)癌性、挣到合理等地方特(te)色，以(yi)此表现了各个百犹如黏(nian)(nian)(nian)接剂，近两(liang)天一两(liang)年来正(zheng)逐年从(cong)光凭过程挑选(xuan)到向依照(z𝓡hao)对(dui)脱(tuo)脂措施(shi)及(ji)对(dui)黏(nian)(nian)(nian)接剂作(zuo)用与功(gong)效(xiao)的(de)恳求，有争对(dui)性知识地指(zhi)导思想黏(nian)(nian)(nian)接剂系统的(de)标有基本(ben)原(yuan)则生长。

　　结(jie)合(he)(he)剂(ji)寻(xun)常(chang)是由(you)低(di)份(fen)子(zi)组(zu)(zu)元与(yu)高(gao)份(fen)子(zi)组(zu)(zu)元加部(bu)分要的(de)扩大剂(ji)组(zu)(zu)合(he)(he)成(cheng)。低(di)份(fen)子(zi)组(zu)(zu)元用(yong)户粘合(he)(he)度(du)低(di)，过程性(xing)好，易(yi)脱去；高(gao)份(fen)子(zi)组(zu)(zu)元用(yong)户粘合(he)(he)度(du)高(gao)，密度(du)高(gao)，保持成(che🦄ng)型法(fa)坯(pi)密度(du)。三者(zhe)当(dang)比(bi)列搭(da)搭(da)配(pei)作(zuo)(zuo)为高(gao)的(de)颗粒装(zhuang)载(zai)的(de)容(rong)👍量量，终作(zuo)(zuo)为高(gao) 精 度(du)和(he)高(gao)评均性(xing)的(de)结(jie)果(guo)。

3.混炼　

　　混炼是将金属粉末与粘结剂夹杂取得平均喂料的进程。因为喂料的性子决议了终打针成形产物的机能，以是混炼这一工艺步骤非 常主要。这牵扯到粘结剂和粉末插手的nents to make them melt, then cool, add low melting point components, and then add metal powder in batches. This prevents the low melting point components from vaporizing or decomposing, and adding metal powder in batches can prevent excessive torque increase and equipment loss. For the feeding method of powders of different sizes, the Japanese patent introduces: first add the coarser 15-40um water atomized powder to the binder, then add 5-15um powder, and then add the powder with degree ≤5um. The shrinkage of the final product changes little. In order to evenly coat a layer of binder around the powder, it is also possible to directly add the metal powder to the high melting point componenadictory. Research on MIM raw material powders includes: powder shape , Particle size and particle size composition, specific surface, etc., Table 1 lists the properties of the raw material powder suitable for MIM. Due to the very fine requirements of MIM raw material powders, the prices of MIM raw material powders are generally higher, and some even reach 10 times the price of traditional PM powders. This is currently a key factor restricting the widespread application of MIM technology. The current methods for producing MIM raw material powders are mainly There are carbonyl method, ultra high pressure water atomization method, high pressure gas atomization method, etc. 2. Binder Binder is the core of MIM technology. In MIM, the binder has two basic functions of enhancing fluidity to be suitable for injection molding and maintaining the shape of the billet. In addition, it should have easy removal and no Due to its toxicity and reasonable cost, a variety of adhesives have appeared for this purpose. In recent years, it has gradually moved from the selection of experience alone to the design of adhesives in accordance with the requirements of degreasing methods and the function of adhesives. The development of the agent system.　　 The binder is generally composed of low molecular components and high molecular components plus some essential additives. Low-molecular components have low viscosity, good fluidity and easy to take off; high-molecular components have high viscosity and high strength to maintain the strength of the formed blank. The two are matched in an appropriate ratio to obtain a high powder loading, and finally a product with high accuracy and uniformity is obtained. 3. Kneading 　　　 Kneading is the process of mixing metal powder and binder to obtain a uniform feed. Because the nature of the feed determines the performance of the final injection molded product, this process step of mixing is very important. This involves the addition of binders and powders