Machining method of 20CrMnTi brake shoe roller shaft
A processing method, the technology of the roller shaft, which is applied in the field of machine parts processing, can solve the problems of a large number of cracks on the product surface, the inability to obtain qualified products, and the complex structure of the roller shaft, so as to improve the utilization rate of materials, improve the mechanical properties, and improve the comprehensive mechanics. performance effect
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[0018] A processing method for a 20CrMnTi brake shoe roller shaft, comprising the steps of blanking, annealing, shot blasting, softening, extrusion, rough turning, finish turning, carburizing, precooling and quenching, low temperature tempering, Secondary shot blasting and fine grinding;
[0019] 1. Cutting: Saw 20CrMnTi round steel into blanks;
[0020] 2. Annealing: Put the blank into an industrial electric furnace for annealing treatment, heat the temperature in the furnace to 850±50°C for 5-7 hours, and then cool it with the furnace;
[0021] 3. Shot blasting treatment: the annealed billet is shot blasted with a shot blasting machine to remove the scale while ensuring that the workpiece is not damaged;
[0022] 4. Softening treatment: degreasing, softening, neutralizing, adjusting and cleaning the blank after shot blasting treatment;
[0023] 5. Extrusion: Put the mold into the cold extrusion hydraulic press, and complete the cold extrusion action in a one-time forming m...
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