Customized Alloy Steel Plated Copper Internal Thread Welding Stud

Customized alloy steel plated copper internal thread welding stud.

Description

Welding studs refers to the method of welding metal studs or other similar metal parts (bolts, nails, etc.) to the workpiece (usually plate) is called stud welding, and the stud used for welding here is called welding Studs.

In order to meet the requirements of protection and decoration performance, multi-layer electroplating is often used in production. Copper coating is often used in the multi-layer coating of steel parts and the bottom layer of other coatings. This is because copper coating can improve the bonding force between the base metal and the coating.

Take the common copper/nickel/metal plating of steel parts as an example, if the steel parts are directly chrome-plated. It can only meet the requirements of hard chrome plating. Can not meet the decoration requirements. If the nickel plating layer or cyanide plating layer is primed, bright nickel is directly plated, because the nickel plating layer has higher hardness and greater internal stress, and then chrome plating on it, due to the high chrome plating temperature, high current, high hardness of the chrome plating layer, and internal stress Large, resulting in the reduction of the bonding force between the nickel plating layer and the chromium plating layer, causing defects such as peeling and shelling of the plating layer. When the copper plating layer is used as the intermediate layer, that is, after the steel parts are cyanidized copper or nickel plating layer as the base, a 20μm thick bright copper plating layer is plated in acid copper plating, and then 6-8μm thick is plated in bright nickel plating. Bright nickel plating, and finally chromium plating in the chromium plating solution for 3 to 5 minutes, the thickness of the chromium plating layer is 0.3μm. Due to the good conductivity and toughness of a certain thickness of copper plating, the internal stress of the entire plating layer caused by the high hardness of the nickel plating layer is reduced, and the bonding force between the base metal and the plating layer is improved, thereby eliminating the peeling and shelling of the plating layer. sick.

Of course, due to improper operation, it may still cause defects such as peeling and shelling of the coating, that is another matter. It is also more economical to use copper plating instead of nickel plating. In addition, copper plating can also be used as a functional plating for steel parts to prevent local carburization. Because the copper coating is economical and detailed, the pores are small, and because of the high temperature during the carburizing process, the copper coating is oxidized and decomposed to produce cuprous oxide and oxygen. Oxygen can prevent the carburizing gas from entering, thereby preventing local carburization. In order to ensure the anti-carburization ability, the thickness of the copper coating is generally 30-50μm.

Factory Diaplay

Test Equipments

Q1:Are you Trading company or Factory?

A:We are factory.We have more than 20years experience.We also have professional big team.

Q2: How long is your delivery time?
A: We have large stock, 3 days for stock items,7-15days for production.

Q3: What's your packing?What to do in case of damaged goods during transport?
A1: Our Normal packing is bulking in Cartons, less than 20 kgs/carton, 48 cartons / pallet. We also can pack products according to your requirement.
A2: To avoid any subsequent trouble regarding quality issue, we suggest you check the goods once you receive them. If there is any transport damaged or quality issue, don't forget take the detail pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest.
 

Q4: Can I get discounts?
A: Yes, for big order, frequent customers, we give reasonable discounts.