The difference between high frequency quenching, intermediate frequency quenching and super audio frequency quenching equipment

1. High-frequency quenching equipment is 50-500KHz, hardened layer (1.5-2mm), frequency with high hardness, workpiece is not easy to oxidize, deform, quenched quality, high production efficiency, such equipment is suitable for friction conditions, such as general The pinion, shaft type (for 45 gauge steel, 40Cr steel material).

2. Ultrasonic quenching equipment 30-36kHz, hardness layer (1.5-3mm). The hardened layer can be divided into small and medium modulus gears along the contour of the workpiece. The surface heat treatment is to change the surface structure of the part to obtain martensite with high hardness, while retaining the toughness and plasticity of the core (ie surface quenching), or to change the chemical of the surface layer at the same time. In order to obtain corrosion resistance, acid resistance, alkali resistance, and surface hardness higher than the former (ie chemical heat treatment).

1. The frequency of intermediate frequency quenching equipment is 1-10KHz, the depth of hardened layer (3-5mm), this type of equipment is suitable for bearing components, such as crankshaft, pressure load of large gear, grinding machine spindle, etc. (the material is 45# steel, 40Cr steel, 9Mn2V and ductile iron).