Technical key points for the production of 30MnB5 chemical requirements

Technical key points for the production of 30MnB5 chemical requirements

Technical key points for the production of 30MnB5 chemical requirements

Q355GNH weathering steel: Q——The first letter of the Chinese pinyin of "Qu" in the yield strength;
355——The lower limit of the lower yield strength of steel, in N/mm²;
GNH——respectively the first letter of "Gao, Nai, Hou" Chinese Pinyin;
Quality grades are divided into A, B, C, D, E
(1)Q355GNH executive standard: GB/T 4171-2008
(2)Q355GNH smelting method: the steel is smelted by converter or electric furnace, and it is killed steel.

At the initial stage of corrosion, the rust layer on the surface of weathering steel is denser than that of carbon steel, 30MnB5 chemical requirements, and there are relatively few cracks and holes. After 25 days, delamination occurs in some parts of carbon steel and weathering steel, and there is no difference in corrosion products, mainly due to the role of alloy elements in the rust layer. The precipitation of Cu and Cr alloy elements in the weathering rust layer can resist the invasion of moisture and harmful ions in the atmosphere, and further corrosion of steel and base metal can be prevented, so as to achieve the effect of atmospheric corrosion resistance.

During the steel plate cutting, the special-shaped steel plate cutting process is often carried out. In this operation process, some cutting curves will be generated. Therefore, there should be relatively high precision standards during the processing of 30MnB5 chemical requirements. The operators need to have rich experience, and they also need to be proficient in the operation methods and working skills of the equipment, so as to ensure that the steel plate can meet the shape requirements after processing.

The results of adopting two-level 30MnB5 chemical requirements service system and implementing standardized management are mainly reflected in the formation of vigorous work style such as quick response and quick action. Our company's customer service center stipulates that employees must be accurate and quick in technical support and 30MnB5 chemical requirements after-sales service. Through the formation of this fast, agile, vigorous style, to provide users with satisfactory service.



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