The difference between the black flat phillips machine screw and the environmentally friendly black zinc salt spray

There are many kinds of surface treatments for screws. Most of them are different surface treatment methods according to the needs of users. Electroplating is the most common one. Electroplating is divided into many types, depending on the color required by the surface of the flat phillips machine screw, or according to user requirements. The choice of plating method varies depending on the performance.

What is the difference between blackening flat phillips machine screw and environmentally friendly black zinc salt spray?

A few days ago, when the customer customized the flat phillips machine screw, the surface of the cross countersunk head screw was required to be black. It is known that there are two kinds of blackening treatment of the screw, one is blackening the screw and the other is black zinc plating. I don’t quite understand the difference between the two. Shi Shi Tong screw manufacturers here briefly say:

The blackening process is also called blackening. The surface of the screw is covered with a layer of black metal to change the color of the surface. The blackening process does not change the performance characteristics of the screw itself, and does not play a protective role.

The environmentally friendly black zinc can not only change the color of the surface of the screw, but also play a role of rust prevention and protection of the screw, allowing the screw to pass the salt spray test for 24-48 hours. Better rust resistance,

Of course, the price of the two treatment methods is also different. The price of environmentally friendly black zinc is higher, but the effect after treatment is better than that of black.

When the customer listened, it was very simple to choose the treatment method of environmentally friendly black zinc. For this kind of flat phillips machine screw, the performance requirement is high, and the treatment method of choosing environmentally friendly black zinc is undoubtedly the best.

If you want to customized flat phillips machine screw please send an email: annie.li@szsst88.com