Surface quenching process based on grinding

Abstract

The invention discloses a surface quenching technique based on abrading, which is characterized by the following: adopting cutting-typed abrasion and reciprocal abrasion pattern; setting the abrading speed between 20m / s and 35m / s with abrading depth between 0.2mm and 1.0mm; making the giving speed of working piece between 0.2m / min and 1.4m / min; freezing at dried pattern.

Description

technical field [0001] The invention relates to a grinding and hardening process, in particular to a grinding-based surface hardening process, which belongs to the technical field of grinding and surface hardening integrated manufacturing. Background technique [0002] In the manufacturing process of electromechanical parts, in order to improve the performance of materials, improve the wear resistance and fatigue strength of parts, and ensure the overall toughness of parts, surface heat treatment is often required. In order to obtain the predetermined machining accuracy and surface quality, the parts after heat treatment usually need to be ground. However, the current mechanical manufacturing process still has the following problems: (1) It is difficult to achieve process concentration in mechanical processing and surface heat treatment, which affects and restricts the improvement of processing automation; (2) The thermal and mechanical effects generated in the grinding proc...

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Problems solved by technology

However, the current mechanical manufacturing process still has the following problems: (1) It is difficult to achieve process concentration in mechanical processing and surface heat treatment, which affects and restricts the improvement of processing automation; (2) The thermal and mechanical effects generated in the grinding process It will damage the surface quality of the parts and affect its performance; (3) The conventional surface heat treatment process increases the investment of special heat treatment equipment and personnel, the consumption of resources and energy, and the pollution of the ecological environment by heat treatment emissions

However, when using single-pass plunge grinding, due to the change of grinding depth during the cutting-in and cutting-out process of the grinding wheel, the grinding heat and the surface heating temperature of the workpiece will change, which will cause the hardening of the cutting-in section and the cutting-out section of the grinding wheel on the workpiece. Changes in the layer depth directly affect the uniformity of the depth of the hardened layer on the surface of the workpiece, which seriously restricts the engineering application of the grinding hardening process

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