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Special Offer Wide Edge Silk Vintage round Glasses Frame Wholesale Trendy Men and Women Metal Frame Mixed Batch Artistic Myopia Glasses Frame
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Metal Material
The metal material used for glasses frame is copper gold, Nickel alloy hegui metal three categories.
Requires a certain hardness, soft property, elasticity, wear resistance, corrosion resistance, weight light, bright and good color, etc. Therefore, the metal materials used to make glasses frames are almost alloy or used after metal surface working treatment.
1. White copper frame (copper zinc alloy):
The main components are copper 64%, zinc 18%, nickel 18%, frame material is cheap and easy to process electroplating is mainly used to manufacture hinge holder wire, small parts and low-grade frame.
2. High nickel alloy frame
The nickel content is as high as over 80%, mainly including nickel-chromium alloy, manganese-nickel alloy, etc. It is better to have a height of nickelalloyed and anticorrosion. In addition, the material has good elasticity.
3. Monnell frame
Nickel copper alloy, nickel content reaches about 63% copper 28%, in addition, there are iron, manganese and other small amounts of metals, especially: corrosion resistance, high strength, welding firm, for the mid-range frame uses the most materials.
4. Pure titanium frame
The proportion of titanium is only 4.5, which is very corrosion-resistant and twice the strength of steel. It is used to make space shuttle case and so on. It is called "Space Metal" and has no metal allergy, early titanium materials have problems such as cutting difficulty and welding difficulty. With the development of technology, these problems have been gradually solved in japan in the market, titanium materials have become the mainstream, and the titanium materials in European and American markets are mainly from Japan. Titanium frames are generally expressed as Ti-P or TiTAN, which are basically made of titanium except wire holder, Hinge and screw.
5. Memory titanium alloy frame
It refers to a new alloy composed of nickel and titanium according to the atomic ratio of 1:1, which is 25% lighter than ordinary alloy and has the same corrosion resistance as titanium material. In addition, the elasticity is very good. Memory titanium alloy: it is a shape memory property below 0 ℃, and it is highly elastic between 0 ℃ and 40 ℃. The corrosion resistance of memory titanium material is higher than Monell alloy and high nickel alloy, however, it is slightly inferior to pure titanium and β-titanium.
6. Β-Titan titanium alloy
It refers to a special alloy formed by mixing pure titanium (70%) with rare metals such as cobalt and chromium (30%). Ultra-light and ultra-elastic frames can be made very thin. Because titanium is stable in rare metals such as cobalt and chromium, it will not cause skin allergy and will have greater development and popularization in the coming decades.
7. Gilded shelves
The process is to add brazing material or direct mechanical bonding between the surface metal and the substrate. Compared with electroplating, the surface metal layer of the coating material is thicker, which also has a bright appearance and good durability and corrosion resistance. The expression of Bao Jin: according to the provisions of the International Conference on precious metals, the products whose weight ratio of gold to alloy is more than 1/20 are expressed by GF, and the products whose weight ratio is less than 1/20 are expressed by GP.
8. K-gold rack
Generally, it is 18k gold, indicating that the content of 24K pure gold in the frame is 18/24. If 750/1000 is used, silver, copper and other substances are 250/1000. Glasses of 18K gold, if the weight is 40G, the gold content is 18 ÷ 24 × 40=30g.
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