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Bearing parts operation appearance reinforcement and heat treatment field

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The appearance and layout of the bearing parts and the heart are quite different in terms of condition, layout and functional requirements. The overall heat treatment often makes it impossible to co-ordinate; the potential of the data is not fully utilized. It can better deal with the difference in layout and demand between appearance and core; and it can further make the appearance obtain some special operation functions; to satisfy the demand for the external function of the bearing under the specific conditions. This is modernized. The development of scientific skills often has meanings. Traditional methods of external reinforcement; the process is attributed to the field of heat treatment. The laser, electron beam, ion beam and other external reinforcement methods developed in modern times; not only some high-tech skills are applied to the data. The appearance of the reinforcement; and the process has now gone beyond the traditional field of heat treatment; constitutes a new field of skills. So today's appearance reinforcement skills can form a variety of classification methods from different perspectives; physical chemistry according to the surface reinforcement skills The process is classified; it can be roughly divided into five categories: external deformation strengthening, external heat treatment strengthening Chemical heat treatment strengthening, strengthening metallurgy appearance, the appearance of the film strengthening.
1. The external deformation strengthening mechanically deforms the metal outer surface; then forms a hardened layer with high hardness and high strength; this external strengthening method is called external deformation strengthening; also known as work hardening. It includes shot blasting, sand blasting, Cold extrusion, rolling, cold rolling and impact, blasting impact strengthening, etc. These methods are characterized by: enhanced dislocation density of the strengthening layer; subtle crystal layout refinement; then its hardness and strength are improved; surface roughness value is reduced. The disaster relief 岣 慵 慵 慵 颓慷 颓慷 颓慷 颓慷 腿 腿 腿 腿 腿 腿 腿 腿 腿 腿 腿 腿 腿 腿 腿 腿 腿 腿 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种 这种It has been used in the bearing industry. Most of its methods have been used in the bearing industry: the external impact of the rolling body is the application of such methods; fine rolling has become a new method of ferrule processing and strengthening.
2. External heat treatment strengthens the use of solid phase transformation; quenching of the outer surface of the part by rapid heating is called external heat treatment; commonly known as external quenching. It includes flame heating quenching, high (medium) frequency induction heating quenching, laser heating or Electron beam heating quenching, etc. These methods are characterized by: external heating and quenching; workpiece deformation.
This method is particularly effective for improving the wear resistance and fatigue strength of large and extra large bearing parts that accept a certain impact load.

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