Batch-type grinding method of hard coating material

Abstract

The invention relates to a batch-type grinding method of a hard coating material, comprising the following steps: carrying out alternate batch-type grinding by adopting a grinding wheel feeding way and a grinding wheel no-feeding way in the grinding process; when the grinding wheel feeding way is adopted, carrying out high-speed or ultra high-speed grinding; when the grinding wheel no-feeding wayis adopted, carrying out no-load reciprocatory grinding; and after every time of feed grinding of a grinding wheel, carrying out the no-load reciprocatory grinding for 2-20 times according to the actual condition; wherein the high-speed or ultra high-speed grinding comprises that the primary feed grinding depth is 10-15mu m, the feeding speed of an operating platform is 6000-30000mm / min, and the linear speed of the grinding wheel is 80-200m / s. In the invention, variation of the actual grinding depth caused by elastic deformation and heat deformation of the grinding wheel and workpieces can beeliminated to the utmost extent, the heat produced at high-speed grinding can be timely released, and the grinding wheel can maintain to be sharp, thus the material removing rate is improved, the grinding surface burning is effectively reduced, the grinding wheel loss and production cost are greatly reduced, and the good processing quality is obtained.

Description

technical field [0001] The invention relates to an intermittent grinding method for high-hardness coating materials, in particular to an intermittent grinding method for high-hardness and high-wear-resistance coating materials; high-speed or ultra-high-speed grinding process. Background technique [0002] The characteristics of high-strength steel coated workpieces are that the matrix material has good toughness and will undergo elastic deformation under external loads. Some special matrix materials are very sensitive to temperature, and a small temperature change will affect its mechanical properties; The hardness of the layer material can reach 1100-1300HV, which has high wear resistance; the bonding strength between the coating and the substrate can reach more than 150MP. Due to the limitation of the coating spraying process, the surface roughness of the sprayed workpiece is often between 3-6μm, and the sprayed workpiece needs subsequent processing to meet the use requir...

AI Technical Summary

Problems solved by technology

[0005] 1. The diamond grinding wheel with a grinding speed of about 25m / s-63m / s is used for traditional grinding. This method can ensure the machining accuracy, but the grinding force is large and the temperature is high during grinding, resulting in low processing efficiency. Severe superficial burns;

[0006] 2. Electrolytic polishing, which has greatly improved the processing efficiency compared with traditional polishing, but generally speaking, its processing efficiency is still relatively low, and its processing accuracy is limited, and it cannot be removed due to the spraying process. size error

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