The heat treatment process of metal stamping parts is an important processing technology used to change the internal structure and mechanical properties of metal materials. The heat treatment process changes the microstructure of the metal through steps such as heating, insulation, and cooling, thereby improving the mechanical properties, corrosion resistance, and wear resistance of metal stamping parts.
The heat treatment process of metal stamping parts mainly includes the following steps:
Heating: Heating metal stamping parts to a predetermined temperature. Commonly used heating methods include electric heating, gas heating and induction heating. The heating temperature depends on the type of metal and the desired microstructure.
Insulation: Keep the metal at a heating temperature for a certain period of time to increase the movement speed of atoms or molecules inside the metal and reach a certain thermodynamic state. The length of holding time depends on factors such as the type and thickness of the metal.
Cooling: Cooling metal stamping parts from the heating temperature to room temperature. The cooling rate has a great impact on the microstructure and mechanical properties of the metal. Depending on the heat treatment process, natural cooling or forced cooling can be used.
There are many heat treatment processes for metal stamping parts, including annealing, normalizing, quenching, tempering, carburizing, etc. Different heat treatment processes are suitable for different metal materials and stamping parts application requirements.
Annealing is a process in which metal is heated to a high temperature and then slowly cooled to room temperature. Annealing can eliminate the stress inside the metal and improve its plasticity and toughness. It is often used for stamping parts of stainless steel, iron, copper and other metals.
Normalizing is a process in which metal is heated to a high temperature and then rapidly cooled to room temperature. Normalizing can refine the grains of metal and improve its strength and toughness. It is often used for stamping parts of low carbon steel, alloy steel and other metals.
Quenching is a process in which metal is heated to a high temperature and then quickly cooled to room temperature. Quenching can increase the hardness and wear resistance of metal and is often used in stamping parts of tool steel, bearing steel and other metals.
Tempering is a process in which the metal is heated to a lower temperature for a period of time after quenching and then cooled to room temperature. Tempering can reduce the internal stress caused by quenching and improve the toughness and plasticity of the metal. It is often used in stamping parts of various structural steels, tool steels and other metals.
