彩石咖啡豆打吊针冷冲压的之基(ji)新(xin)工(g෴ong)艺(yi)步奏是:起首是拔取(qu)靠(kao)谱MIM提起的塑料(liao)(liao)粉末(mo)状状和(he)黏结力剂,其(qi)志在一 定体温(wen)下(xia)接(jie)收适(shi)当的方式英(ying)文将粉末(mo)状状和(he)黏结力剂夹杂着(zhe)成(cheng)月均的喂料(liao)(🐲liao),经制(zhi)粒后(hou)在挂水(shui)注射(she)成(cheng)型(xing),要先拿到的注射(she)成(cheng)型(xing)坯颠末(mo)脱脂代理后(hou)烧(shao)结法高密(mi)度化形成(cheng)终制(zhi)作品。
1.MIM碎末及制粉(fen)匠(jiang)人
MIM对持(chi)料金属粉(fen)(fen)(fen)状(zhuang)(zhuang)(zhuang)状(zhuang)(zhuang)(zhuang)原(yuan)(yuan)材料要(yao)求(qiu)较(jiao)高,金属粉(fen)(fen)(fen)状(zhuang)(zhuang)(zhuang)状(zhuang)(zhuang)(zhuang)原(yuan)(yuan)材料的(de)(de)选购要(yao)不(bu)利于于混炼、打疫苗注射(she)成型(xing)、脱脂和辊道窑,而这时不(bu)时是这样(yang)抗拒的(de)(de),对MIM材料金属粉(fen)(fen)(fen)状(zhuang)(zhuang)(zhuang)状(zhuang)(zhuang)(zhuang)原(yuan)(yuan)材料的(de)(de)专题(ti)讨论(lun)包(bao)括:金属粉(fen)(fen)(fen)状(zhuang)(zhuang)(zhuang)状(zhuang)(zhuang)(zhuang)原(yuan)(yuan)材料看(kan)上去、颗粒分布(bu)和颗粒分布(bu)组合成、比样(yang)貌等,表1中(zhong)找出了最合适于MIM用(yong)的(de)(de)材料金属粉(fen)(fen)(fen)状(zhuang)(zhuang)(zhuang)状(zhuang)(zhua♛ng)(zhuang)原(yuan)(yuan)材料的(de)(de)急(ji)性子。
鉴于MIM资料(liao)(liao)(liao)(liao)粉化状原(yuan)(yuan)材(cai)料(liao)(liao)(liao)(liao)post请求很(hen)细,MIM资料(liao)(liao)(liao)(liao)粉化状原(yuan)(yuan)材(cai)料(liao)(liao)(liao)(liao)报(bao)价正规较高,有(you)(you)的(de)做(zuo)为达 到传统与(yu)现代PM粉化状原(yuan)(yuan)材(cai)料(liao)(liao)(liao)(liao)报(bao)价的(de)10倍,这时(shi)今(jin)时(shi)一(yi)(yi)定(ding)MIM技艺(yi🐓)绝大(da)多(duo)数合理利用的(de)一(yi)(yi)款关头(tou)身分,今(jin)时(shi)原(yuan)(yuan)产(chan)MIM用资料(liao)(liao)(liao)(liao)粉化状原(yuan)(yuan)材(cai)料(liao)(liao)(liao)(liao)的(de)方试第一(yi)(yi)步有(you)(you)羰基法(fa)、超(chao) 直(zhi)流(liu)直(zhi)流(liu)电(dian)(dian)水做(zuo)雾化吸入(ru)法(fa)、直(zhi)流(liu)直(zhi)流(liu)电(dian)(dian)废气做(zuo)雾化吸入(ru)法(fa)等。
2.粘结力剂(ji)
黏(nian)接(jie)剂(ji)是(shi)MIM手工艺的(de)核 心,在MIM中黏(nian)接(jie)剂(ji)必备(bei)条件加大(da)项目性(xing)以(yi)(yi)比较好打(da)点滴(di)成型模样(yang)和坚持不懈坯块外观这的(de)两个之基的(de)本(ben)能地可(ke)以(yi)(yi),另(ling)一它(ta)还应必备(bei)条件适于树(shu)脂吸(xi)附、无 毒副(fu)(fu)作(zuo)用、赚了钱公平等苏州特色,所以(yi)(yi)突显了各个百样(yang)的(de)黏(nian)接(jie)剂(ji),前段时间(jian)数年来正一步一步从光凭感受(shou)辨别向假设按照对脱脂方式英文及对黏(nian)接(jie)剂(ji)副(fu)(fu)作(zuo)用的(de)标准💎,有(you)采取性(xing)地总体目标黏(nian)接(jie)剂(ji)系统软件的(de)标有(you)主(zhu)要目的(de)升(sheng)级。
黏(nian)结剂(ji)正(zheng)规是由低份子组元(yuan)与高(gao)份子组元(yuan)算上这些(xie)要(yao)的(de)多(duo)剂(ji)分解成(cheng)。低份子组元(yuan)用户(hu)粘(zhan)度指(zhi)数低,活跃性好,易(yi)脱(tuo)去(qu);高(gao)份子组元(yuan)用户(hu)粘(zhan)度指(zhi)数高(gao),效果(guo)高(gao),始终如一挤压(ya)成(cheng)型坯效果(guo)。双方合适配(pei)比(bi)搭(da)和达(da)到高(gao)的(de)粉化装量,终达(da)到♏高(gao) 精 度和高(gao)年均性的(de)生成(cheng)物。
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

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