Custom carbon steel thin head cross drive m1 m2 m3 m4 m5 screw

Industry knowledge：

Screw Surface Treatment

1. Plating trivalent white zinc, that is, white zinc plating. White zinc plating refers to a method of plating a layer of white zinc on the surface of the screw to achieve beautiful, rust-proof and other effects.
2. Plated with trivalent blue zinc, that is, blue zinc-plated. Blue zinc plating refers to the method of plating a layer of blue zinc on the surface of the screw to achieve the effects of blue beauty and rust prevention.
3. Trivalent color zinc plating, that is, color zinc plating. Color zinc plating refers to the treatment method of plating a layer of color zinc on the surface of the screw to achieve beautiful, rust-proof and other effects.
4. Plating trivalent black zinc, that is, black zinc plating. Black zinc plating refers to a method of plating a layer of black zinc on the surface of the screw to achieve beautiful, rust-proof and other effects.
5. NYLOK anti-fall treatment, plating anti-fall, is a kind of loosening technology. The anti-fall screw anti-loosening technology is the first in the world to be successfully developed in the United States. It uses special technology to make special engineering resin adhere to the screw teeth. Using the resilience of engineering resin materials, the bolts and nuts can be squeezed to achieve resistance to vibration and impact during the locking process, which completely solves the problem of screw loosening.
6. Imitation gold treatment, a surface treatment method to obtain 14-18K gold color on the surface of parts. Mainly used for electroplating in construction, hardware, lighting, jewelry and other industries.
7. Gold-plating, gold-plating is a decorative process and one of the commonly used words. At first, it meant that a thin layer of gold was plated on the surface of the utensils.
8. Bronze treatment, through technical treatment, the surface of the screw becomes a kind of bronze color.
9. Dacromet plating technology was born in North America. It is a new type of anti-corrosion coating with zinc powder, aluminum powder, chromic acid and deionized water as the main components.
10. Blackening at high temperature is a treatment method of blackening at high temperature for screws.
11. Copper plating, copper plating is usually divided into electroless copper plating and electroplating copper. Electroless copper plating is to recover and separate copper ions on the surface of catalytically active substances such as palladium, through the effect of reducing agents such as formaldehyde.
12. Nickel plating, the method of plating a layer of nickel on metal or some non-metals by electrolysis or chemical method is called nickel plating. Nickel plating is divided into electroplating nickel and electroless nickel plating. Nickel electroplating is in an electrolyte composed of nickel salt (called main salt), conductive salt, pH buffer, and moisturizing agent, the anode is metal nickel, the cathode is a plated part, and direct current is applied to accumulate on the cathode (plated part). A uniform, fine nickel coating is applied.
13. Nickel-plated copper bottom.
14. Silver plating, this plating is used to avoid screw corrosion, increase screw conductivity, reflectivity and beauty. Widely used in electrical appliances, instruments, appearance and lighting appliances and other manufacturing industries. In order to avoid the discoloration of the silver coating, it is generally necessary to pass the post-plating treatment, mainly dipping, chemical and electrochemical passivation, plating precious or rare metals, or coating the coating.
15. Ordinary black pot is a method of black pot at room temperature for screws.
16. Spray paint on the head, a kind of artificial paint for spray paint, made of lead nitrate, resin, pigment, solvent, etc. Usually sprayed on the surface of the screw evenly with a spray gun, it is resistant to water and oil, and it dries quickly. The substance is toxic and has a certain impact on the body. Different brands of spray paint have different toxicity due to different content of ingredients. Special attention should be paid to safety during use and avoid inhalation and skin contact.
17. Surface dyeing, chemically coloring the surface of the screw, the process is simple, the control is simple, the efficiency is high, the cost is low, and the color is bright.
18. In addition, there are many other surface treatment methods on the surface of the screw. For screw threads, it is not only required to have beautiful and good-looking features in use, but also anti-corrosion effects and anti-loosening effects.