Customize Induction High Frequency Heat Treatment Machine for Braze Welding

The metal surface of laser heat treatment is generally processed by mechanical processing, with small surface roughness and high reflectivity to laser. Before laser heat treatment, the quenched surface should be pre treated to improve its absorbance. After oil removal, rust removal, cleaning, and drying of the treated surface, a light absorbing coating (blackening) is pre installed on the surface. The methods include phosphating, spraying (brushing) paint, improving surface roughness, oxidation, coating, etc; The coating should be thin, uniform in thickness, with a high laser absorption rate (over 90%), good thermal conductivity, good adhesion to metal, and not decompose or evaporate at a certain temperature. It is easy to clean and remove after quenching or can be used without removal.

During the processing, the deformation of the workpiece is minimal, making it suitable for surface strengthening of certain workpieces or local parts that cannot be completed or difficult to achieve by other quenching techniques. Laser heat treatment has a high degree of automation, and the depth and area of the hardening layer are controllable. This technology is mainly used to strengthen the surface of automotive components or molds, improve their surface hardness, wear resistance, corrosion resistance, strength, and high-temperature performance, such as laser heat treatment of automotive engine cylinder holes, crankshafts, stamping molds, casting plates, etc.