q235b iron sheet plate silicon content

Design of smelting composition and smelting process of SN400A, SN400B, SN400C steel, q235b iron sheet plate product: 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 SiCa treatment. In this way, the sulfur content in the steel can be reduced, and the sulfide in the steel can be modified. Greatly improve the toughness of steel and improve the casting performance of molten steel, and increase the qualification rate of the tundish temperature to ensure smooth casting.

The basic principle of q235b iron sheet plate, heat treatment of steel: put the metal workpiece in a certain medium and heat it to a suitable temperature, keep it in this temperature for a certain time, and then cool it at different speeds. Objective: to obtain the desired structure and properties by means of heating, heat preservation and cooling, so as to make the metal workpiece have the required mechanical, physical and chemical properties.

BBN STEEL's machining process BBN STEEL's main steel plate cutting bearing housing shape, marine machinery gearbox, 45 steel carbon plate cutting zero, Q235B medium and heavy plate, q235b iron sheet plate, Q345B low alloy plate, 35#, normal carbon plate, wear-resistant steel, pressure vessel steel, storage tank steel Accessories. CNC cutting all kinds of steel special-shaped parts, steel cutting parts, mechanical parts, mold materials and zero cutting pins. The steel plate guarantees the quality of steel plate cutting, and has several automatic CNC flame cutting equipment to ensure the steel plate size.

In general alloying theory, according to the affinity between q235b iron sheet plate alloy steel and carbon, alloy elements can be divided into carbide forming elements and non carbide forming elements. Common alloy elements are as follows: non carbide forming elements: Ni, Co, A1, Si, etc. Carbide forming elements: Mn, Cr, Mo, W, V, Nb, Zr, Ti (arranged from weak to strong affinity with carbon). In addition, there are rare earth elements, which are recorded as Re.