In recent years, with the continuous advancement of global "carbon reduction" and the continuous improvement of people's light-weight and anti-collision safety performance of automobiles. Products represented by hot-formed steel, because of their high strength and precise formability of auto parts, are mainly used in key parts of automobile body safety, and have broad market prospects.
Hot-rolled anti-oxidation coating-free hot-formed steel CF-PHS1500 is a very typical user-oriented metal material for automobiles. It is driven by the product demand of automobile OEMs. The material design adopts an innovative alloy composition system. Combined with the capability limit of Benxi Steel's existing equipment in industrial landing, the two-wheel drive innovation in alloy system and manufacturing process has broken through a large number of technical difficulties. It only took two years to complete the trial production and application verification of industrialized products, with stable and stable performance. Mass production and supply capacity.
Benxi Steel's hot-rolled anti-oxidation coating-free hot-formed steel CF-PHS1500 was developed in view of the limitations of the existing technology and the pain points of users. The system and the whole process surface control technology, the thickness of the oxide scale on the surface of the parts after hot forming is less than micron, so as to solve the problem of peeling off the scale of the existing hot forming steel bare plate. At the same time, this type of steel breaks the restrictions of foreign Al-Si coating patents, and forms our own patented technology for coating-free hot forming steel, which avoids the adhesion of Al-Si coated plates to roller furnace rollers during the heating process. , while greatly reducing the production cost of the automobile industry, while helping the global carbon reduction.
It is understood that this product is mainly used in passenger car anti-collision steel beams, door sill beams, A-pillars, B-pillars and other fields. After the industrial trial production of the low-strength grade series steel of the alloy system, it will also be applied to the coating-free laser tailor-welded integrated stamping door ring, which greatly improves the utilization rate of raw materials, improves the overall safety performance of the door ring, and greatly improves the weight reduction of the whole vehicle. In order to further promote the process of vehicle lightweighting. At the same time, the project has developed a new heating technology of front-end rapid induction heating + conventional heating in the hot stamping process, forming a new short-flow hot stamping forming technology, which can shorten the traditional 40m roller furnace to 15m and increase the overall heating efficiency by 30%. These will significantly reduce the construction and operating costs of hot stamping lines.
At present, the patent part, production process Know-how and key process control points of the product are being systematically sorted out, striving to build a systematic intellectual property group owned by China.
