AT&M specilizes in the production of custom made high tolerance and complex parts by Metal Injection Molding (MIM ) Technology. About AT&M MIM Plant
In 1989, based on the powerful scientific research strength of China Central Iron & Steel Research Institute, AT & M gathered a lot of well-known domestic and foreign experts and established a metal injection molding laboratory and was first to initiate a systematic research of metal injection molding technology in China. As a result of over ten years of relentless effort in research and innovative development, AT & M acquired advanced MIM manufacturing process and formally established metal injection molding plant in 1998.
In 2003, AT & M invested near 50 million Yuan in advanced international production equipment and established a MIM production line meeting international standards in Beijing, which obtained the strong support of new material major industrial development project of Beijing city.
So far, Metal Injection Molding Plant of AT & M has gained the ability to independently research, develop and produce various materials; meanwhile, the plant has reduced production cost and enhanced the performance of products utilizing advanced German MIM manufacturing technology. AT&M MIM Plant has developed more than 500 different kinds of parts so far, and its annual production capacity of various alloy products is over 300 metric tons; it has become a certified supplier of over ten famous global enterprises located in USA, Germany, Japan, Italy, Brazil and Thailand.
AT&M MIM Plant is ISO9001:2000,ISO14001-96;ISO18001certified.
MIM Technology overview
Metal injection molding technology (MIM) is a high-tech near net shape technology combining traditional powder metallurgy with plastic injection molding technique. This technology has conquered the low density, uneven structure, poor mechanical property and bad molding property for thin wall complex parts of traditional powder metallurgical products; meanwhile, this technology applies to mass production of small metal parts with complex shapes, high precision and high performance requirements. Sintered metal products not only have the same complex shape and high precision of products produced by plastic injection molding method, but also have the approximate physical, chemical and mechanical property of other metal forming processes.
Advantages of MIM
Net-shape or near-net-shape forming technology for Complex shaped 3 dimensional parts.
Fine microstructure. Excellent physical property. Critical Tolerances .Low Cost
Form crossing holes, internal threads, external threads and knurled features& text, logo etc. on the outer surface.
Wall thickness as low as 0.5 mm and hole dia as low as 0.5 mm.
Wide material range. Possible to co-molding different materials for better application. Material properties close to wrought metal.
Go for MIM when
1.Need small parts of complex shapes with consistent quality in high volumes.
2.Meet with difficulties when machining Complex Shapes in steel or stainless steel.
3.Require material properties close to wrought metal.
4.Expect special properties like magnetic or electrical properties in parts which are difficult to achieve through traditional pressing& sintering process, dia casting or other processes.
Materials available:W, Mo tungsten alloy; Tool steel ; SUS316L, SUS440C, and 17-4PH stainless steel ; Low alloy steel ; Super-alloy and heat resistant alloy s; Titanium alloy...
Standard Tolerance of MIM
Items | The best | Mill run |
Angle | ± 0.5 º | ± 2 º |
Density | ± 0.2% | ± 1% |
Dimension | ± 0.1% | ± 0.3% |
Roughness | Ra ∠ 1μ m | Ra∠5μm |
Weight | ± 0.1% | ± 0.4% |
Metal Injection Molding Parts
