Steel Injection Molding
Material: Case hardened steel: MIM8620, 9310, 4600 Through hardened steel: MIM 4650, 4340, 4140, 52100 Stainless steel: SS17-4ph, 304L, 420 High Temp. App: 440C, 310Nb, 310 Corrosion Resistant: SS316L, 310Nb Magnetic material: Fe3Si, SS430, Fe-49Co-2V Heavy / Super Alloy: WHA1, WHA2, Inconel, Nimonic90 Tool steel: S7, M2, D2
steel injection molding
Weight limit: Ideal is 0.1 – 50 gm
Length limit: 200 mm
Ideal is < 60mm
Wall thickness: 0.5mm – 5mm
Tolerances per ISO 2768 (m)
Rule of thumb is +/- 0.5% of nominal dimension
ISO 9001-2008, ISO/TS 16949:2009, ISO/13485:2003
Metal Injection Molding (MIM) is a manufacturing process which combines the versatility of plastic injection molding with the strength and integrity of machined, pressed or otherwise manufactured small, complex, metal parts. Competing processes include pressed powder sintering, investment casting, turning and machining. The process involves combining fine metal powders with plastic binders which allow the metal to be injected into a mold using equipment similar to standard plastic injection molding machines. After the part is molded and before the binders are removed, the part is referred to as a “green part”. The next step is to remove the binders with solvents and thermal processes. The resultant metal part is sintered at temperatures great enough to bind the particles but not melt the metal. The products of metal injection molding are up to 98% as dense as wrought iron and used in a broad range of applications (including medical, dental, firearms, aerospace, and automotive.) The window of economic advantage in metal injection molded parts lies in the complexity and small size of the part. Tolerances as small as +/-. 003″ per linear inch can usually be held without secondary processes. The difficulty of fabrication through other means may make it inefficient or even impossible to manufacture otherwise. Increasing complexity for traditional manufacturing methods typically does not increase cost in a metal injection molding operation due to the wide range of features possible through injection molding (internal and external threads, miniaturization, branding) .
The specificity of the process allows the injection of all kind of forms, from the simplest to the most complex. In addition, the process offers the capability to realize parts including many functionality and avoiding subsequent assembly. As the process is based on injection, very complex parts with tight tolerances and a density of more then 98% can be considered. It is easy to produce large numbers of parts at attractive prices. The cost of the part is directly related to its weight and its volume. This process is to be able to produce parts from 50 to 500 grams. or more, with tight tolerances. The usual limits are: +/- 0.5% of the dimension and could be reduced to +/- 0.3% on target dimensions.
Xiamen Goldcattle Plastic & Metal Product Co.,Ltd
Address:8th Floor,Dongfang shangmao Building,NO.56 Yibinbei RD, Huli Dist,Xiamen,Fujian,China 361006