Whether hot rolled hardox 400 sheet need preheating

After the steel plate is produced from the original factory, it will pass through a series of transportation and storage links and then be delivered to the processing workshop. During this period of time, the steel plate surface will contact with the air continuously, which will inevitably produce a layer of oxide skin. The oxide skin is a difficulty in the treatment process. It has high melting point, is not easy to burn and dissolve, increases preheating time, reduces cutting speed. Therefore, the surface of the hot rolled HARDOX 400 sheet plate should be derusted before cutting.

hot rolled HARDOX 400 sheet, The hardened wear-resistant plate is quenched and hardened as a whole, and the martensite in the metallographic structure improves the overall hardness, and the micro hardness and macro hardness are basically the same. Cemented carbide and T10, even if the macroscopic hardness of T12 steel and cemented carbide after quenching is basically the same, the wear resistance of cemented carbide is much higher than that of T12 steel, because there are a large number of carbides in cemented carbide .

High-strength steel plates have the following characteristics. First, the strength is high, the bearing capacity is very good, and it is not easy to break. Second, compared with other steel plates under the same strength requirements, high-strength steel plates are lighter and thinner, which can effectively reduce the weight of structures. Third, the hot rolled HARDOX 400 sheet, high-strength steel plates are required to be safe and reliable, able to withstand complete disasters such as water, fire, earthquake, storm, etc., to protect people's safety.

In the first quarter, hot rolled HARDOX 400 sheet, crude steel output in Asia amounted to 315.15 million mt, falling by 0.3 percent, with 234.45 million mt produced by China, up 1.2 percent, 24.36 million mt produced by Japan, decreasing by 2.4 percent, 27.5 million mt produced by India, falling by 5.3 percent, and 16.94 million mt produced by South Korea, down by 4.8 percent - with all comparisons on year-on-year basis.