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How to Improve the Fatigue Strength of Seam Honing Pipe

Views: 0     Author: Site Editor     Publish Time: 2023-03-20      Origin: Site

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Through rolling forming, a cold work hardening layer is formed on the rolling surface, which reduces the elastic-plastic deformation of the contact surface of the grinding pair, improves the wear resistance of the inner wall of the quilted tube, and avoids grinding burns.After rolling, the reduction in surface roughness can improve matching properties.Rolling is a chip-free machining that uses the plastic deformation of metal at room temperature to flatten microscopic irregularities in the surface of the workpiece, thereby changing the surface structure, mechanical properties, shape and size.Therefore, this method can achieve the two purposes of finishing and strengthening at the same time, which cannot be achieved by grinding.Regardless of the processing method used, small and uneven tool marks will be left on the surface of the part, resulting in interlaced peaks and valleys.The principle of rolling processing is to use the cold plasticity characteristics of metal at room temperature, apply a certain pressure on the surface of the workpiece with rolling tools, so that the metal on the surface of the workpiece will flow plastically, and the pressure finishing will be filled into the original remaining low groove. process, reducing the surface roughness of the workpiece.Due to the plastic deformation of the rolled surface metal, the surface structure is cold hardened, the grains are refined, and a dense fibrous shape is formed to form a residual stress layer, which improves the hardness and strength, thereby improving the wear resistance, corrosion resistance and compatibility of the workpiece surface sex.Rolling is a non-machining plastic processing method.

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