S355ML material should be promoted and utilized more

HG785 is a new type of low alloy high strength steel with low expansion coefficient and stable elastic modulus. S355ML material, HG785 is an ideal material for manufacturing high strength products such as ships, super steel shells and pressure vessels.

In order to obtain the seamless tube with smaller size and better quality, the method of cold rolling, cold drawing or the combination of the two must be used. Cold rolling is usually carried out on a two high mill, and S355ML material pipes are rolled in a circular pass composed of a variable cross-section circular groove and a fixed conical head. Cold drawing is usually carried out on single chain or double chain cold drawing machines of 0.5-100t.

When cutting extra thick S355ML material steel plates, the cutting speed should not be too fast. Many processing and production industries will encounter such problems, that is, in order to speed up the cutting of extra thick steel plates, many details will be ignored in the process of these process operations, so it is easy to produce waste parts, and some plates S355ML material will crack. So when cutting extra thick steel plates, you must pay attention to the speed, which can not be too fast. Low-speed processing can effectively improve work efficiency.

The global share of my country's steel production has increased substantially. In the first nine months of 2020, my country's crude steel output accounted for 58% of the world's total, pig iron accounted for 69%, and imported iron ore accounted for 71% of global iron ore exports. "Such a high proportion is a manifestation of the effective control of the epidemic situation in our country and the strong demand. As the situation of epidemic prevention and control in various countries gradually improves, the proportion of my country's output will gradually decline." Luo Tiejun said.