High frequency heater - high strength and toughness of workpiece

High frequency heat treatment of spring washer in fasteners

The working conditions

Bolts, nuts, spring washers and pin shafts are widely used in the mechanical industry for connecting and fastening. In practical work, they should bear the combined action of tension, pressure, shear force, torsion force and friction force, and should have high strength and toughness, while requiring good wear resistance. This paper focuses on the high frequency heat treatment of spring washer.

Choose materials

According to the working conditions of high frequency heating machine fasteners are different, the choice of materials is also different, spring washer material for 65Mn steel.

65Mn steel main chemical composition: CO.62% -- 0.70%, Mn O.90% ~ 1.20%, Si O.1726 ~ 0.37%, Cr≤0.25, Ni≤0.25

65Mn steel critical point: A. , 721℃, AC3 or A. 745℃, ArI 670℃.