Heat treatment technology of steel plates s235jr

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 steel plates s235jr 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.

In comparison between steel plates, hot rolled steel plates s235jr steel plates are generally slightly harder than cold rail steel plates and have lower elongation. In cold-rolled steel sheets, the higher the grade, the softer the steel, the lower the yield point, and the higher the total elongation.

Design of smelting composition and smelting process of steel plates s235jr, SN400A, SN400B, and SN400C steel plates: The smelting process adopts low-sulfur molten iron and low-sulfur scrap on the basis of the general process flow of steel for export, adding the refining process of LIIF furnace deep desulfurization and calcification treatment. In this way, the sulfur content in the steel can be reduced, and the sulfide in the steel can be modified. It greatly improves the toughness of SN400 steel and improve the casting performance of molten steel, increase the temperature pass rate of the tundish, and ensure the smooth progress of casting.

The company has superior geographical location and convenient transportation. After more than 20 years of market trials and tribulations, from small to large, from weak to strong, in order to meet the needs of customer extension development, the company expanded the deep steel plates s235jr processing services of cutting steel pieces. Now we have built a business system integrating steel plate, steel plate cutting and steel plates s235jr steel deep processing. The company provides one-stop solution for customers with lower price, higher quality and faster response speed.