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Zinc Plated half thread Mushroom Head Square Neck Carriage Bolt DIN603,M 6 /8
Diameter range (mm)：M5-M24，3/16-1'Length range (mm)：16-600，1''-2'
As a relatively common standard component, high-strength bolts have good tightening performance. They are often used in steel frame structures and projects in daily life, and then have the effect of tightening. Generally, in the construction of steel structure workshops, the required bolts are generally above grade 8.8, which are all high-strength bolts.
Sometimes the bolts in the steel frame structure do not need electroplating, and it does not matter if you use ivory directly. Generally, most of the high-strength bolts are used for the connection of some highway bridges, rails and high-pressure machines. The high-strength bolts used for high-pressure machines must be prestressed with steel bars to ensure the airtightness of the container.
After heat treatment, the performance level of the high-toughness nut can be greatly improved. The bolt of the steel structure bolt manufacturer is a kind of high-strength bolt and a standard part. These high-strength bolts have good tightening performance, and most of them are usually used in steel frame structures and engineering, and then have a tightening effect. However, we cannot blindly follow the trend to carry out heat treatment, and we should take corresponding countermeasures to repair the problem in time.
Heat treatment method of high strength bolts:
Incandescent lamp heat treatment method; this kind of heat treatment generally adopts magnetic induction heat treatment or flame heat treatment. Two hardness testers are used to test the strength of the screw, and the heat treatment method that meets the regulations can be selected. The two hardness testers mentioned at this time are: microhardness tester and Rockwell hardness tester; we can also choose from the thickness. When the thickness is thin, the microhardness tester should be used; when the thickness is thicker, the Rockwell hardness tester should be used. Hardness Tester.
In general, when heat treatment of its high-strength bolts, you need to pay more attention to avoid being affected by your carelessness. At present, most of the high-strength bolts are used in some industries, so when carrying out the production and processing of high-strength bolts, attention should be paid to their stability and qualification.
