Surface treatment of roller
The surface treatment methods of the roller are different according to the environment, and different surface treatments can be used. Generally speaking, the surface treatment methods of rollers are divided into the following:
Zinc plating is suitable for industrial equipment, such as light industry, instrument, mechanical and electrical, agricultural machinery, national defense and so on. It is the most common roller surface treatment method at present. It belongs to the real environmental protection galvanizing. Compared with the traditional galvanizing, it has the following characteristics:
1. without highly toxic cyanide, waste water is easy to handle
2. the coating is finely crystallized, glossy, dispersing and deep plating close to cyanide bath, suitable for electroplating of complex parts.
3. plating bath is stable and easy to operate
No corrosion of 4. equipment
5. low cost
(2) decorative chrome plating
Decorative chromium is mainly used for automobiles, bicycles, daily hardware products, household appliances, instrument switches, mechanical parts and other equipment and facilities. Decorative chromium uses nickel, nickel chromium technology to ensure product quality. The surface is silver white, and the decorative chromium has the characteristics of strong anticorrosion and good appearance decoration effect, and has high reflection coefficient.
(3) encapsulation treatment
The rubber roller is a rubber product coated with rubber layer on the metal steel pipe and vulcanized. Compared with the ordinary roller, the rubber drum has the characteristics of elasticity, abrasion resistance, acid and alkali resistance, oil resistance (Ding Qing rubber), temperature resistance and no rust. The hard chromium is also called wear-resistant chromium. This treatment can increase the hardness of the surface, improve the wear resistance, resist the mild corrosion resistance, and use imported raw materials and adhesives, commonly used as natural rubber and butyl. Clear rubber two kinds, with black, green, light gray as the recommended color.
(4) hard chromium plating
Hard chromium is also called wear-resistant chromium. This treatment can increase the hardness of the surface, improve the wear resistance, resist the mild corrosion resistance and so on. It is used in the mechanical mould, plastic mould, corrosion resistant valve, printing and textile paper roller processing and measuring equipment, and the surface is silver white.