With the improvement of people's living standard, our quality of life also constantly improve, the car was becoming a means of transport, to introduce the car not today, but a car parts of the body, of course the car usually consists of thousands of parts, modern car by tens of thousands of parts to meet. The automobile energy saving and environmental protection, safety and comfort requirements, realize the lightweight, high strength and high performance target components of automotive materials has also undergone tremendous changes.
High strength steel used, drawing strength was higher than that of low carbon steel, but the elongation is only 50% of the latter, it is only applicable to simple shape and extend the depth of small parts. High strength steel is now adding trace elements properly in the low carbon steel, by various processing and rolling, the tensile strength of up to 420N/mm2 that is 2~3 times that of ordinary low carbon steel, deep drawing can be rolled into excellent ductility, thin steel plate, is an important material for lightweight body. The main phosphorus cold rolled steel sheet and bake hardening cold rolled steel plate, cold rolled dual phase steel and high strength IF cold rolling, the body can be selected according to the varieties of designer steel plate parts of stress and shape complexity.
Phosphorus containing high strength cold rolled steel sheet: phosphorus high strength cold rolled steel plate mainly used car outer plate, door, roof and trunk lid lifting plate, can also be used for stamping parts of truck cab. Main features: high strength, high ratio of common cold rolled steel 15%~25%; good strength and plasticity balance, with strength the increase of the elongation and strain hardening index decreased little; has good corrosion resistance, 20% higher than the common cold rolled steel plate has good welding performance.
Bake hardening of cold rolled steel plate after stamping, drawing and painting high temperature aging treatment, yield strength can be improved. This is referred to as the bake hardening steel BH steel plate is thin and have sufficient strength, lightweight body outer panel design is one of the preferred materials.
We have excellent products, perfect service, reliable reputation, for your career success to help, we sincerely welcome all colleagues to discuss business!