Do you know the electroplating process of metal eyeglasses?
22-08-23 15:51:53 By Bestsea eyewear
According to the material of eyewear, it can be divided into metal eyewear, acetate eyewear,buffalo horn glasses and wood eyewear. Among them, the vast majority of metal glasses are electroplated and colored, and only a small part are not electroplated. Do you know the electroplating process of metal eyeglasses?
Electroplating is the process of using the principle of electrolysis to coat a thin layer of other metals or alloys on the surface of certain metals, thereby preventing metal oxidation (such as rust), improving wear resistance, electrical conductivity, light reflection, corrosion resistance ( copper sulfate, etc.) and enhance aesthetics. The outer layer of many metal eyeglasses will have electroplating process.
Electroplating process: generally includes three stages of pre-plating, electroplating and post-plating.
The role of electroplating: 1. Anti-corrosion 2. Protective decoration 3. Anti-wear 4. Electrical properties: According to the working requirements of the parts, provide a coating with conductive or insulating properties 5. Process requirements
Electroplating classification: water electroplating and vacuum electroplating
1. Water plating is an electrochemical process, which is to immerse the electroplated parts in the electroplating solution and then energize to form a uniform, dense and well-bonded metal surface processing method on the surface of the parts.
2. The characteristics of the process: 1. No heat source is required, and various coating works are carried out under the normal temperature of 15-40 ° C. 2. The principle is not to cover, but to combine the coating and the substrate to form an alloy, and its bonding strength is greatly increased.
3. There are not many commonly used materials for water plating.
(1) Common coatings are copper, nickel, and chromium. Copper: Generally used for bottom plating, commonly known as copper bottom. Nickel: Silver, mainly used for ordinary surfaces or as a pre-process to chrome plating. Chrome: Bright silver, for high-gloss surfaces.
(2) Common surface colors are gold, silver, black, gunmetal color.
Gold: It can be achieved by plating real gold and hexavalent chromium (fake gold).
Silver: Available by nickel, chrome, silver plating.
Black: It can be achieved by plating black chrome and black zinc.
Gun Color: Can be achieved by alloy plating.
(3) Common electroplating effects include high gloss, matte, matte, mixed, etc.
High light: The surface of metal glasses forms a high light effect, usually silver.
Matte: The surface of metal glasses forms a general bright effect.
Matte: The surface of metal glasses creates a hazy effect.
(4) Can water plating be used for color plating? It can be achieved, but the process is complicated and the defect rate is high, so color plating is less often done.
1. Definition: Vacuum plating is a type of electroplating, which is to deposit various metal and non-metallic films on the surface of metal parts by distillation or sputtering in a high vacuum equipment.In this way, a very thin surface coating can be obtained.
2. Classification of vacuum plating
according to different methods,vacuum plating is divided into evaporation plating, sputtering plating, ion plating, etc.
(1) Evaporation plating is to evaporate or sublime the material by resistance heating, electron beam, and laser irradiation in an environment with a vacuum degree of 10 to 2 Pa or less, and deposit directly on the substrate to form a thin film.
(2) Sputtering plating: The phenomenon of bombarding the target with gas ion-stopping ions, so that some atoms on the surface of the target escape. If the part is placed in an appropriate position near the target, the atoms flying from the target will be deposited on the part and a coating is formed on the surface.
Compared with evaporative plating, sputtering gold plating has the disadvantage of complex equipment, requiring high-pressure gold plating equipment, which is slower than evaporative gold plating.
(3) Ion plating is a method that combines evaporation plating and sputtering plating. The advantages of this method are that the obtained coating has strong adhesion to the substrate, a high deposition rate, and a high density of the coating. .
3. Process features:
Under vacuum conditions, various metal and non-metal thin films are deposited on the metal surface by distillation or sputtering, and a very thin surface coating can be obtained. It has the outstanding advantages of fast speed and good adhesion, and is generally used as a functional coating for higher-end eyewear
4. Suitable material and color for vacuum plating
The surface color of vacuum plating is not limited, and it can also be used for colorful color plating, such as the following.
(1) Silver: It can be realized by chrome, aluminum, nickel, etc.
(2) Gold: It can be plated with gold, titanium nitride and gold alloy.
(3) Black and gun color: compound of titanium and carbon
(4) Local electroplating is convenient, and vacuum plating can use fixtures to block areas that do not require electroplating.
5. Thickness of vacuum coating
The vacuum coating is very thin, generally 0.5-2.0um. Since the coating is very thin and easy to wear, the surface of the vacuum coating needs to be sprayed with a UV paint. The thickness of the surface treatment layer of vacuum plating products mainly includes primer, vacuum coating and UV paint, and the total thickness is controlled at about 0.02mm.
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