Usage of soldering iron

Adding chromium to steel can significantly improve its oxidation resistance and increase its corrosion resistance. Chromium is present in many steels with special physical and chemical properties. Chromium in steel is added with ferrochrome. High carbon ferrochrome is used as an alloying agent for ball steel (0.5% ～ 1.45% Cr), Tool steel, die steel (5% ～ 12% Cr) and high-speed steel (3.8% ～ 4.4% Cr), which can improve the hardenability of steel and increase the wear resistance and hardness of steel. Adding chromium to cast iron can increase hardness and improve wear resistance. The mechanical properties of cast iron can be improved by containing 0.5% to 1.0% chromium. High carbon ferrochromium and furnace grade ferrochromium are widely used as furnace materials for smelting stainless steel (AOD or VOD method), reducing production costs. Medium and low carbon ferrochromium is used in the production of medium and low carbon structural steel, carburized steel, gears, high-pressure blower blades, valve plates, etc. Microcarbon ferrochromium is used in the production of stainless steel, acid resistant steel, heat resistant steel, and electric heating alloys.