The performance of automotive stamping parts corresponds to the required performance of stamping materials
The so-called performance refers to the mechanical, physical and chemical properties of mechanical parts under service conditions. Performance is the most important factor to be considered when selecting materials. Different parts require different performance. When selecting materials, the primary task is to accurately determine the main performance required by the part. So what are the requirements for the performance of automotive stamping parts on the material performance of stamping parts? Let us understand step by step!
Auto stamping parts are mainly car body panels, frame longitudinal and cross beams, car compartments, wheels and engine covers, as well as some supporting parts and connecting parts. The use and working conditions of each specific auto part are different, and the load it bears is different, so the requirements for materials are also very different. To
- 1. Requirements for material performance of automotive cab parts;Automobile cab parts are mostly covering parts, with complex shapes and complex shapes, but they are not stressed. With the mold forming process, the forming performance of the material becomes the main contradiction. Therefore, the material is required to have formability, tension rigidity, and extensibility. , Concave resistance, corrosion resistance and weldability, etc. In product design, steel plate varieties are usually selected according to the stress and shape complexity of the plate parts. Generally, low-carbon cold-rolled steel sheets and ultra-low-carbon cold-rolled steel sheets with excellent drawing properties are selected. In recent years, phosphorus-containing cold-rolled steel sheets with excellent formability and higher strength, cold-rolled steel sheets with high bowness, cold-rolled dual-phase steel sheets, bake-hardened cold-rolled steel sheets, ultra-low carbon steel, high-strength cold-rolled steel sheets, and others Various types of steel plates, such as coated steel plates, tailor-welded steel plates, and TRIP steel plates, are also widely used in automobile body parts such as door outer panels, door inner panels, door reinforcement panels, roof covers, trunk covers, and bumpers. Dongfeng heavy-duty truck body currently commonly used material grades and drawing grades.
- 2. Requirements for material performance of automobile compartment parts The shape of automobile compartment parts is not too complicated, and most of them adopt the roll forming process, which has certain requirements on the formability, rigidity, corrosion resistance and weldability of the material. Generally, high-strength steel plates with better formability and weldability are selected. Generally, high-strength steel sheets and ultra-fine grain steels with a strength level of 300-600 MPa are used. Commonly used material grades and strength requirements for Dongfeng heavy-duty truck compartments
- 3. The material performance requirements of automobile frame parts. The frame, the compartment mid-plate and some parts used for support and connection are all important load-bearing parts. Good plasticity, fatigue durability, collision energy absorption capacity and weldability, etc. Generally, high-strength steel sheets, ultra-fine grain steel sheets (strength grades of 300-610 MPa) and ultra-high strength sheets (strength grades of 610-1000 MPa) with better formability are generally selected. Common material grades and strength requirements for Dongfeng heavy-duty truck frames and some parts used for support and connection
- 4. The requirements of the stamping process on the performance of stamping materials. The stamping process is generally divided into a separation process and a forming process. According to the processing process, stamping parts can be roughly divided into blanking parts, bent parts, drawn parts, formed parts and cold extruded parts.
The structural types of stamping parts are different, and the mechanical properties of the materials are different. When selecting stamping materials, first select metal materials with different mechanical properties according to the type and use characteristics of stamping parts, so as to achieve the purpose of not only ensuring product quality, but also saving materials.
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