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MIM工艺特色与上风


 

宣布日期：[2025/8/4]
 

MIM产物特色

1、零部件多少外形的自在度高，能像出产塑料成品一样，一次成形出产外形庞杂的金属零部件。
2、MIM产物密度平均、光亮度好，外表粗拙度可到达Ra 0.80～1.6μm，分量范围在0.1～200g。尺寸精度高（±0.1%～±0.3%），普通无需后续加工。
3、合用资料范围宽，操纵范畴广，原资料操纵率高，出产主动化水平高，工序简略，可完成持续多量量出产。
4、产物品德不变、机能靠得住，成品的绝对密度可达95%～99%，可停止渗碳、淬火、回火等热处置。产物强度、硬度、延长率等力学机能高，耐磨性好，耐委靡，构造平均
国际上遍及以为MIM手艺的成长将会致使零部件成形与加工手艺的一场反动，被誉为“21世纪最热门的零部件的成形手艺”。


手艺上风


MIM 与传统粉末冶金绝对比
MIM 可以或许或许制作庞杂外形的产物，防止更多的二次机加工。
MIM 产物密度高、耐蚀性好、强度高、延展性好。
MIM 可以或许或许将2个或更多PM产物组分解一个MIM产物，节流资料和工序。

MIM与机器加工绝对比
MIM 设想可以或许或许节流资料、降落分量。
MIM 可以或许或许将打针后的浇口料反复破裂操纵，不影响产物机能，资料操纵率高。
MIM 经由进程模具一次成形庞杂产物，防止多道加工工序。
MIM 可以或许或许制作难以机器加工资料的庞杂外形整机。

MIM 与紧密锻造绝对比
MIM 可以或许或许制作薄壁产物，最薄可以或许或许做到0.2mm。
MIM 产物外表粗拙度更好。
MIM更合适制细盲孔和通孔。
MIM 大大削减了二次机加工的任务量。
MIM可以或许或许疾速的多量量、低本钱制作小型整机。

设想指南

具备以下特色的产物，凡是合适接纳MIM：

庞杂外形: MIM许可像注塑成型一样，三维外形的自在设想。因为MIM是一个成型进程，
附加的产物外形不会增添本钱，若是经由进程外形设想取得减重，本钱反而会降落，
这使得MIM成为将一个以上自力整机组分解多功效的整机的抱负路子之一。
MIM设想法则同注塑成型很是靠近，从而很轻易顺应三级外形庞杂的金属零部件。

尺寸紧密: MIM近净成型精度的凡是是尺寸的±0.5%。某些尺寸特色能到达±0.3%。
犹如别的手艺一样，高紧密象征着更高本钱，是以在可以或许或许知足操纵的环境下倡议尺寸
公役过度放宽。MIM不能间接知足的公役可以或许或许经由进程后续加工的体例来完成。

薄壁产物: 小于6毫米的壁厚对MIM是比拟合适的。较厚的外壁也可以或许或许，
可是工艺时候会增添良多、资料本钱会增添。低于0.5 mm的薄壁接纳MIM也能完成，
御嘉鑫股分可以或许或许做到0.2mm极薄壁的产物（但对详细产物外形有一定的依靠）。

分量尺寸: MIM合适分量小于100克的零部件，少于50克是最罕见的操纵。
但是，分量达250克的零部件的也可以或许或许接纳MIM工艺的。 原资料是MIM流程的关头本钱身分。
MIM产物设想的后期阶段常常会尽可以或许削减零部件的分量。同塑料产物一样，
可以或许或许在不影响产物完全性的前提下，经由进程内核和支架来削减零部件的分量。
MIM在极小和微型零部件方面表现凸起，分量小于0.1克也是可以或许或许的。
长度跨越250mm的产物亦能做到。

批量范围: 对MIM产物而言，模具和后期产物开辟进程是MIM流程所必需的，
以是对小批量的产物（年需要量低于几千件）而言，它凡是会影响决议计划进程。
MIM从每一年几万件的小产量晋升到上千万件的产量可以或许或许很是经济地完成。

质料普(pu)遍:MꦍIM能处置良多(duo)资料，包(bao)含(han)铁合(he)金(jin)、不锈钢、铜、KOVAR合(he)金(jin)、低(di)温合(he)金(jin)、硬质合(he)金(jin)等。


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