Xiamen Jiayu Optical Co., Ltd.
The material of the metal spectacle frame
Jun 01, 2021
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The metal materials used for spectacle frames are divided into three categories: copper alloy, nickel alloy and precious metal. It is required to have a certain degree of hardness, softness, elasticity, abrasion resistance, corrosion resistance, light weight, luster and good color and so on. Therefore, the metal materials used to make spectacle frames are almost all alloys or used after metal surface processing.
1. Cupronickel frame (copper-zinc alloy): The main components are copper 64%, zinc 18%, and nickel 18%. The material of the frame is cheap and easy to process. Electroplating is mainly used for the manufacture of hinge supporting wires, small parts and low-end parts.
2. High-nickel alloy frames: nickel content is as high as 80% or more, mainly nickel-chromium alloys, manganese-nickel alloys, etc., high-nickel alloys have better corrosion resistance, and in addition, the material has good elasticity.
3. Monel frame: nickel-copper alloy, with a nickel content of about 63%, copper and 28%, in addition to iron, manganese and other small amounts of metals, especially: corrosion resistance, high strength, strong welding, used for mid-range frames Much mat erial.
4. Pure titanium frame: Titanium has a specific gravity of only 4.5, which is very corrosion resistant, and its strength is twice that of steel. It is used to make space shuttle watch cases, etc. It is called "space metal", and there is no metal allergy. Early titanium materials exist With the development of technology, the problems of difficult cutting and welding have been gradually solved in the Japanese market. Titanium materials have become the mainstream, and the titanium materials in the European and American markets mainly come from Japan. Titanium frames are generally expressed as Ti-P or TiTAN, and are basically made of titanium except for torsion, hinges, and screws.
5. Memory titanium alloy frame: refers to a new alloy composed of nickel and titanium at an atomic ratio of 1:1. It is 25% lighter than ordinary alloys and has the same corrosion resistance as titanium. In addition, it has very good elasticity. Memory titanium alloy: It has the characteristics of shape memory below 0℃, and shows high elasticity between 0-40℃. The corrosion resistance of memory titanium is higher than that of Monel and high nickel alloys, but it is better than pure titanium and β -Titanium is inferior.
6. β-TiTAN titanium alloy: refers to a special alloy formed by mixing pure titanium (70%) and rare metals such as cobalt and chromium (30%). Ultra-light and super-elastic frames can be made very thin. Because it is an alloy of titanium with rare metals such as cobalt and chromium, it is very stable and will not cause skin allergies. It will have greater development and popularity in the next few decades.
7. Gold-clad frame: The process is to add solder or direct mechanical bonding between the surface metal and the substrate. Compared with electroplating, the surface metal layer of the cladding material is thicker, and it also has a bright appearance, good durability and good durability. Corrosion resistance. The indication of the gold-clad number: According to the regulations of the International Precious Metals Conference, products with a weight ratio of more than 1/20 of gold to alloy are indicated by GF, and products below 1/20 by weight are indicated by GP.
1. Cupronickel frame (copper-zinc alloy): The main components are copper 64%, zinc 18%, and nickel 18%. The material of the frame is cheap and easy to process. Electroplating is mainly used for the manufacture of hinge supporting wires, small parts and low-end parts.
2. High-nickel alloy frames: nickel content is as high as 80% or more, mainly nickel-chromium alloys, manganese-nickel alloys, etc., high-nickel alloys have better corrosion resistance, and in addition, the material has good elasticity.
3. Monel frame: nickel-copper alloy, with a nickel content of about 63%, copper and 28%, in addition to iron, manganese and other small amounts of metals, especially: corrosion resistance, high strength, strong welding, used for mid-range frames Much mat erial.
4. Pure titanium frame: Titanium has a specific gravity of only 4.5, which is very corrosion resistant, and its strength is twice that of steel. It is used to make space shuttle watch cases, etc. It is called "space metal", and there is no metal allergy. Early titanium materials exist With the development of technology, the problems of difficult cutting and welding have been gradually solved in the Japanese market. Titanium materials have become the mainstream, and the titanium materials in the European and American markets mainly come from Japan. Titanium frames are generally expressed as Ti-P or TiTAN, and are basically made of titanium except for torsion, hinges, and screws.
5. Memory titanium alloy frame: refers to a new alloy composed of nickel and titanium at an atomic ratio of 1:1. It is 25% lighter than ordinary alloys and has the same corrosion resistance as titanium. In addition, it has very good elasticity. Memory titanium alloy: It has the characteristics of shape memory below 0℃, and shows high elasticity between 0-40℃. The corrosion resistance of memory titanium is higher than that of Monel and high nickel alloys, but it is better than pure titanium and β -Titanium is inferior.
6. β-TiTAN titanium alloy: refers to a special alloy formed by mixing pure titanium (70%) and rare metals such as cobalt and chromium (30%). Ultra-light and super-elastic frames can be made very thin. Because it is an alloy of titanium with rare metals such as cobalt and chromium, it is very stable and will not cause skin allergies. It will have greater development and popularity in the next few decades.
7. Gold-clad frame: The process is to add solder or direct mechanical bonding between the surface metal and the substrate. Compared with electroplating, the surface metal layer of the cladding material is thicker, and it also has a bright appearance, good durability and good durability. Corrosion resistance. The indication of the gold-clad number: According to the regulations of the International Precious Metals Conference, products with a weight ratio of more than 1/20 of gold to alloy are indicated by GF, and products below 1/20 by weight are indicated by GP.
8.K gold frame: generally 18K gold, indicating that the 24K content of pure gold in the frame is 18/24. If it is expressed by 750/1000, it means that the content of silver, copper and other substances is 250/1000. If the weight of 18K gold glasses is 40 grams, the gold content is 18÷24×40=30 grams.
The above is about the introduction of metal spectacle frames. I believe that there are many terms that everyone is relatively unfamiliar. The familiar ones are pure titanium and memory titanium alloys. Indeed, these two are currently the most commonly used spectacle frames, and the price is also Moderate, good quality, only a spectacle frame worth buying.
