Performance of Automotive Stampings Corresponds to Performance of Stamping Parts
The so-called use performance refers to the mechanical properties, physical and chemical properties of mechanical parts in service conditions. Performance is the most important factor to consider when selecting materials. The required performance of different parts is not the same. When selecting materials, the first task is to accurately determine the main performance required for the part. What are the requirements for the performance of stamped parts in the use of automotive stampings? Let us step by step to understand it below!
Automotive stampings are mainly based on body panels, frame rails and beams, carriages, wheels, and engine covers, as well as some support and connectors. Each concrete automobile part uses and the working condition is different, receives the load to be different, therefore to the material request also has the very big difference.
1. Requirements of car cab components on material properties
The components of the automobile cab are mostly covered pieces, and the appearance is complex and the forming is complex. However, the force is not large. With the mold forming process, the forming property of the material becomes a major contradiction. Therefore, the material is required to be formable, tightly rigid and extensible. , Concave resistance, corrosion resistance and weldability. When designing a product, the type of steel plate is usually selected according to the stress conditions and shape complexity of the plated parts. Generally, low-carbon cold-rolled steel sheets and ultra-low-carbon cold-rolled steel sheets with excellent drawing performance are selected. In recent years, phosphorus-forming cold-rolled steel sheets, high-arched cold-rolled steel sheets, cold-rolled two-phase steel sheets, bake-hardened cold-rolled steel sheets, ultra-low-carbon steel high-strength cold-rolled steel sheets, and others with excellent formability and higher strength Types of steel plates such as coated steel plates, welded steel plates, and TRIP steel plates are also widely used in automotive body parts such as door outer panels, door inner panels, door reinforcement panels, roof covers, trunk lids, and bumpers. Dongfeng heavy-duty vehicle body materials are currently commonly used grade and drawing level.
2. Requirements for material properties of automobile compartment parts The shapes of automobile compartment parts are not very complicated, and most of them use roll forming processes, which have certain requirements on the formability, rigidity, corrosion resistance and weldability of materials. High-strength steel sheets with good forming properties and weldability are generally used. Generally, high-strength steel plates and ultra-fine grain steels with strength classes of 300-600 MPa are used. Commonly used material grades and strength requirements for Dongfeng heavy-duty trucks
3. Requirements for material performance of automobile frame parts Frames, compartment plates, and some components used for support and connection are important bearing parts. Most of them use the mold forming process and require high strength and strength of the materials. Good plasticity, fatigue durability, impact energy absorption, and weldability. High-strength steel sheets, ultra-fine grain steel sheets (strength classes 300-610 MPa), and ultra-high strength sheets (strength class 610-1000 MPa) with good forming properties are generally used. Dongfeng heavy-duty truck frame and some commonly used material grades and strength requirements for supporting and connecting parts
4, the stamping process requirements of stamping material performance Stamping process is generally divided into the separation process and forming process, according to the processing process stamping parts can be divided into blanking parts, bending parts, drawing parts, forming parts and cold extrusion parts.
Different structural types of stampings require different material mechanical properties. When selecting stamping materials, first select metal materials with different mechanical properties according to the type of stampings and the characteristics of use, so as to achieve the purpose of both ensuring product quality and saving materials.