Metal product processing is the process of changing the shape, size, and properties of metal materials through physical or chemical methods. It is widely used in fields such as machinery manufacturing, automotive, and aerospace. Its core principles are primarily based on the plastic deformation, cutting removal, and modern forming techniques of metal materials, involving knowledge from multiple disciplines, including mechanics, materials science, and process engineering.
Plastic forming is one of the most fundamental methods in metal processing, and includes processes such as forging, rolling, and extrusion. These processes use external forces to induce plastic flow in the solid state of metal to achieve the desired shape. The principle is to exploit the ductility and lattice slip mechanism of metals to achieve deformation when stress exceeds the yield strength. For example, forging uses hammering or pressure to rearrange the internal grains of metal, improving the mechanical properties of the material.
Machining involves the removal of excess material through the relative motion of the tool and workpiece, resulting in precisely sized parts. Its core principle is that the cutting edge of the tool, under the action of cutting forces, causes shear deformation of the metal, forming chips. During the machining process, tool geometry, cutting speed, and feed rate directly influence machining quality and efficiency.
Modern metal processing technologies also include advanced processes such as welding, laser cutting, and additive manufacturing (3D printing). Welding combines metal atoms through localized heating or pressure, while laser cutting utilizes high-energy laser beams to achieve high-precision separations. Additive manufacturing builds complex structures by stacking materials layer by layer, breaking through the limitations of traditional processing.
The principles of metal processing rely not only on the inherent properties of the material but also involve process optimization and equipment innovation. With the development of intelligent manufacturing and automation technologies, metal processing is moving towards high-precision, high-efficiency, and green manufacturing, providing important support for industrial upgrading.