Novel spring pre-strengthening finishing composite shot blasting method
A shot peening and finishing technology, which is applied in the direction of abrasives, metal processing equipment, manufacturing tools, etc., can solve the problems of reducing surface roughness and large surface roughness of spring steel, so as to improve mechanical properties, large residual compressive stress, and hardness high effect
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[0040] Pre-strengthening and finishing composite shot peening
[0041] A shot peening machine is used to carry out pre-strengthening and finishing compound shot peening treatment on the spring. The pre-strengthening and finishing compound shot peening treatment includes three processes: the shot peening intensity of the first process is 0.23Amm, the shot peening intensity of the second process is 0.45Amm, and the second process is 0.45Amm. The shot peening intensity of the three processes is 0.15Amm, and the shot medium of the three shots is the same, and the third 0.15Amm finishing shot peening can further reduce the surface roughness of the shot peening to obtain a processed spring product.
[0042] The shot blasting machine is a pneumatic shot blasting machine, the shot medium used in the pneumatic shot blasting machine is G3 steel wire cut shot, the shot diameter is 0.6mm, and the shot hardness is 55HRC.
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