Smart Watch MIM Parts
As a near-net-shaping technology for manufacturing high-quality precision parts, MIM has advantages over conventional and processing methods. MIM can manufacture many parts with complex shape features, such as various external grooves, external threads, tapered external surfaces, cross through holes, blind holes, four sets and key pins, ribbed plates, surface knurling, etc., with Parts with the above characteristics cannot be obtained by conventional powder metallurgy methods.
Product Description
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Titanium Injection Molding Smart Watch MIM Parts |
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Item |
Material |
Production Process |
Sintering Temperature |
Mold |
Custom |
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Smart Watch |
17-4 |
Metal Injection Molding |
1350°C-1500°C |
To be customized |
Yes |
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Chemical Composition |
C: ≤0.07 Mn：≤1.00 And: ≤1.00 Cr：15.5~17.5 Ni：3.0~5.0 P: ≤0.04 S：≤0.03 Cu：3.0~5.0 Nb+Ta：0.15~0.45 |
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Available Materials |
Low carbon stainless steel, titanium alloy (Ti, TC4), copper alloy, tungsten alloy, hard alloy, high temperature alloy (718, 713) |
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Finish |
Dimensional Accuracy |
Product Density |
Appearance Treatment |
Appropriate Weight |
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Roughness 1～5μm |
（±0.1%～±0.5%） |
92～95%
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Mirror Reflection |
0.03g～400g） |
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Mechanical Properties |
Tensile strength σb (MPa): aged at 480°C, ≥1310; aged at 550°C, ≥1060; aged at 580°C, ≥1000; aged at 620°C, ≥930 Conditional yield strength σ0.2 (MPa): aged at 480°C, ≥1180; aged at 550°C, ≥1000; aged at 580°C, ≥865; aged at 620°C, ≥725 Elongation δ5 (%): aging at 480°C, ≥10; aging at 550°C, ≥12; aging at 580°C, ≥13; aging at 620°C, ≥16 Reduction of area ψ (%): aging at 480°C, ≥40; aging at 550°C, ≥45; aging at 580°C, ≥45; aging at 620°C, ≥50 Hardness: solid solution, ≤363HB and ≤38HRC; 480℃ aging, ≥375HB and ≥40HRC; 550℃ aging, ≥331HB and ≥35HRC; 580℃ aging, ≥302HB and ≥31HRC; 620℃ aging, ≥277HB and ≥28HRC |
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Characteristics of injection molding technology
As a near-net-shaping technology for manufacturing high-quality precision parts, MIM has advantages over conventional and processing methods. MIM can manufacture many parts with complex shape features, such as various external grooves, external threads, tapered external surfaces, cross through holes, blind holes, four sets and key pins, ribbed plates, surface knurling, etc., with Parts with the above characteristics cannot be obtained by conventional powder metallurgy methods. Since the parts manufactured by MIM almost do not need to be machined, the consumption of materials is reduced, so when the number of complex shape parts required to be produced is high, MIM will be more economical than the machining method.
Powder Injection Molding Process
A few points that should be emphasized in the process:
1. Fine powder for metal powder.
2. Forming is formed by plastic mold, using the principle of plastic forming.
3. Sintering is basically the same as the traditional powder metallurgy sintering method.
4. Process limitations caused by debonding.
Compared with traditional mechanical processing, powder injection molding has recently improved its processing capacity by automation, and has made great progress in efficiency and precision, but the basic procedures are still inseparable from step-by-step processing (turning, planing, milling, drilling, polishing, etc.) to complete the shape of the part. The machining accuracy of the machining method is far superior to other machining methods, but because the effective utilization rate of materials is low, and the completion of its shape is limited by equipment and tools, some parts cannot be completed by machining. On the contrary, MIM can effectively use materials, and the degree of freedom of shape is not limited. For the manufacture of small and difficult-shaped precision parts, Smart Watch MIM Parts has a low cost and high efficiency compared with mechanical processing, and has strong competitiveness.
Process advantages of MIM
1. MIM can form various metal material parts with complex three-dimensional shapes (only this material can be made into fine powder), and the density and performance of each part of the part are consistent, that is, isotropic. Provides a greater degree of freedom for part design.
2. MIM can produce parts close to the final shape. High dimensional accuracy.
3. Even with solid phase sintering, the relative density of MIM products can reach more than 95%, and its performance can be compared with that of forged materials. Especially the dynamic performance is excellent.
4. MIM can produce parts of microscopic composite materials or macroscopic composite materials to give full play to the excellent properties of different materials.
5. The price of powder metallurgy (PM) automatic molding machine is several times higher than that of injection molding machine. MIM can conveniently adopt a multi-cavity mold, which has high molding efficiency, long service life of the mold, and convenient and quick replacement and adjustment of the mold.
6. Injection molding can be used repeatedly, and the material utilization rate is over 98%.
7. The product turns quickly. The production flexibility is large, and the time from design to production of new products is short.
8. MIM is especially suitable for mass production, and the product performance is consistent. If the parts produced are properly selected and the quantity is large, higher economic benefits can be achieved.
9. The range of materials used in MIM is wide and the application fields are broad. The materials that can be used for injection molding are very wide, such as carbon steel, alloy steel, tool steel, refractory alloy, hard alloy, high specific gravity alloy, etc. The application fields of MIM products have spread all over the national economy. The applicable materials for MIM mainly include: Fe alloy, Fe-Ni alloy, stainless steel, W alloy, Ti alloy, Si-Fe alloy, hard alloy, permanent magnetic alloy, and ceramic materials such as alumina, silicon nitride, and zirconia.
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