Watch Case MIM Parts
Features: Due to the addition of Mo, its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, and can be used under harsh conditions; excellent work hardening (non-magnetic); excellent high temperature strength; non-magnetic in solid solution state; cold The appearance of rolled products has good gloss and is beautiful; compared with 304 stainless steel, the price is higher.
Product Introduction
Watch case MIM Parts | |||||||||
Item | Material | Production Process | Sintering Temperature | Mold | Custom | ||||
Watch case | 316 | Metal Injection Molding | 1350°C-1500°C | To be customized | Yes | ||||
Chemical Composition | C ：≤0.08 | ||||||||
Available Materials | Low carbon stainless steel, titanium alloy (Ti, TC4), copper alloy, tungsten alloy, hard alloy, high temperature alloy (718, 713) | ||||||||
Finish | Dimensional Accuracy | Product Density | Appearance Treatment | Appropriate Weight | |||||
Roughness 1～5μm | （±0.1%～±0.5%） | 92～95% | Mirror Reflection | 0.03g～400g） | |||||
Product performance | Product performance | ||||||||
Several materials for watch cases
The development of clocks and watches has a history of hundreds of years. Watch case MIM Parts has been developing continuously, and the quality of materials is also constantly improving. New materials continue to appear and are gradually applied to the production and manufacturing process of clocks and watches.
How many materials are there for the watch case?
The European model of titanium-containing stainless steel is 316L, which is now produced according to the American standard ASTM standard (equivalent to my country's OCr17nIL12Mo2). Corrosion resistance and wear resistance are relatively good, the surface does not need electroplating, only polishing, sandblasting, and sanding treatment will form different forms of three-dimensional appearance effects. Because of these properties, most watch manufacturers use 316L stainless steel.
1. Half steel
The semi-steel is brass electroplated, with steel color, golden color, and the bottom color will be exposed when scratched. Not repairable.
2. Rolex uses stainless steel 904L (00Cr20Ni25Mo4.5Cu). 904L is harder and more corrosion-resistant, but it can cause skin allergies in some cases. Currently, there is no second company except ROLEX.
3. Tungsten steel
Hardened and bonded metal, bonded and sintered, high hardness (P grade) will break when bumped. Also known as cemented carbide. High hardness, wear resistance, and clear appearance, it is called "wear-resistant material".
4. Black steel
The stainless steel is blackened, and the background color will be exposed if scratched, which cannot be repaired.
5. Bronze
Anti-corrosion, mostly used for engraving antique watches
6. Ceramics
Various colors (bright red has been produced) are mostly used for bezels
7. Precision ceramics
Smooth, wear-resistant, does not hurt the skin, the main component is zirconia, which can obtain good processing performance under certain temperature conditions, and then through advanced processing methods, it can be made into exquisite watch cases and straps.
Precision ceramics have high strength and surface hardness, wear resistance and light weight, corrosion resistance, and no allergies. The hardness of high-tech ceramics can reach Mohs 8~9, which is second only to natural diamonds and much higher than stainless steel.
The disadvantage is that it is brittle, so try to avoid collisions during use.
8. Plastic
The resulting strap not only fits the wrist better, but also expresses the stylized temperament more implicitly.
In addition to traditional steel straps and leather straps, silicone watches have become the first choice for sports watches and diving watches with their unique charm.
9. Titanium alloy
It is hard, light and heat-resistant, with special luster, and has high requirements for polishing and restoration. It is composed of titanium metal, aluminum, vanadium, nickel, molybdenum and other elements. Its advantages are high strength, light weight, corrosion resistance, and good performance at medium and low temperatures.
10. Gold cladding
Also known as gold cladding, the outer layer is covered with a thin gold sheet, and the inner material is brass, silver, steel, etc. Steel-clad is called full-steel gold-clad, copper-clad is called half-steel gold-clad, and silver-clad is called full silver-clad gold, and the thickness of the gold-clad is not less than 10 microns. (1um = 0.001mm)
11. Gold plating
The method is the same as that of gold plating, except that the thickness of gold is 2~3 microns or there is no gold component at all, and it is just electroplated gold.
12. Platinum
Pure platinum is silvery-white; it has a metallic luster. The color and luster of platinum are natural and unchanged for a long time. The hardness is 4 to 4.5 degrees, and it has strong ductility. Platinum foil; its strength and toughness are much higher than other precious metals. Platinum can be divided into pure platinum, iridium platinum and K platinum. The state stipulates that only jewelry with a platinum content of 85% or more can be called platinum jewelry, and Must be marked with Pt. The highest quality of all precious metal materials is topped with platinum. Platinum is expensive, and its purity is represented by Pt950 and Pt900.
13. K gold
(Referring to 18K, 14K, 9K) The inner and outer materials are consistent and will not fade
Karat gold refers to an alloy mixed with gold and other metals. Because it is karat gold in English, it is referred to as k gold for short. For the precious metal part, pure gold is 24k, but pure gold is too soft to make watches, and other metals must be mixed to strengthen the hardness. Generally, silver, copper and palladium are the main materials, but no matter what kind of metal is mixed, the proportion of pure gold accounts for 75%. . With the ratio of gold, silver and copper, five different colors can be produced.
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