Metal stamping is a forming process that uses a press and dies to apply external force to sheet metal, strip, tube, and profiles, causing plastic deformation or separation to obtain workpieces of the desired shape and size. The resulting workpieces are called metal stampings. Metal stamping is a forming process that uses a press and dies to apply external force to sheet metal, strip, tube, and profiles, causing plastic deformation or separation to obtain workpieces of the desired shape and size.
Heat Treatment Process: A process in which a metal workpiece is heated to a suitable temperature in a specific medium, held at that temperature for a certain time, and then cooled at different rates.
Function: Heat treatment is one of the important processes in the manufacturing of mechanical parts and dies. It can ensure and improve various properties of the workpiece, such as wear resistance and corrosion resistance. It can also improve the microstructure and stress state of the blank, facilitating various cold and hot working processes. The purpose of carburizing is to improve the wear resistance of the surface layer while maintaining high impact resistance, i.e., strength and toughness, in the core.
Classification: Metal heat treatment processes can be broadly classified into three categories: overall heat treatment, surface heat treatment, and chemical heat treatment. Overall heat treatment involves heating the entire workpiece and then cooling it at an appropriate rate to alter its overall mechanical properties. Surface heat treatment involves heating only the surface layer of the workpiece to change its surface mechanical properties. Chemical heat treatment alters the chemical composition, microstructure, and properties of the workpiece's surface layer. Chemical heat treatment involves heating the workpiece in a medium (gas, liquid, or solid) containing carbon, nitrogen, or other alloying elements and holding it at that temperature for a relatively long time, thereby allowing elements such as carbon, nitrogen, boron, and chromium to diffuse into the surface layer. After element diffusion, other heat treatment processes such as quenching and tempering are sometimes performed. The main methods of chemical heat treatment include carburizing, nitriding, and metal diffusion.