What anti-corrosion measures are generally adopted for high-strength bolts and nuts?

Hex bolt and Hex nuts are usually repeatedly disassembled and used, and this type of screw fasteners that rely on threads if corroded and rusted, will lead to locking and can not be removed, which greatly affects the use and working life of instruments and equipment.

In terms of screw corrosion prevention, we have determined different specific measures through continuous analysis and testing, in order to choose their own according to different types of use scenarios and main uses.

The common ones such as changing the internal organization of the metal, 304 and 316 stainless steel bolts are actually in this way to improve the anti-corrosion work ability, stainless steel material screws and Hex Nuts as long as there is no impact, do not damage the surface of the external thread, even in a humid environment, can be used for a long time.

Then there are the various surface treatment technologies, such as oxidation blackening, metal plating and dacromet, which are essential for carbon steel Hex Bolts. However, their anti-corrosion ability is large and small, some wood screws are low in price, but it is easier to corrode and rust, such as oxidation black, but it is not easy to crack, generally with high-strength bolts; Some Confirmat Screw or other screws can have blue, color, black and other colors, beautiful appearance, ornamental, anti-corrosion work ability is also very good, this type is galvanized; Compared with Dacromet, the color is monotonous, and the anchor bolts are used relatively more.

Each specific measure has advantages and disadvantages, and ask what kind of processing technology is used by the bolt manufacturer in the process of use, and then select according to the application field.

Contact Us:

Mrs.Renee
Tel: +86 13331361547
Email: Renee@kjproducts.cn
Address: Mingyang Village Industrial Zone, Yongnian District, Handan City, Hebei Province
Web: www.kjmetalproducts.com