Production process for grinding silver bright material by railway spring

Abstract

The invention discloses a production process for grinding a silver bright material by a railway spring. The production process comprises the technical steps of feeding, softening and annealing, roughstraightening by a two-roller straightener, peeling by a peeler, fine straightening and polishing by the two-roller straightener, eddy current flaw detection, sawing and sizing, antirust oil coating and packaging. According to the production process, the combination of softening annealing and peeling by the peeler is adopted, the average diameter of carbide particles in a hot-rolled bar is increased, so that the hardness is effectively reduced, peeling is carried out on the hot-rolled bar, and the removal amount of a cutter is controlled, so that the hot-rolled bar is not likely to break off,and the metal yield is improved; the rough straightening of the two-roller straightener before the peeling process of the peeler improves the straightness of the hot-rolled bar, reduces the transitioncutting caused by the straightness and reduces the abrasion of the cutter, and the two-roller straightener after the peeling process of the peeler finishes the fine straightening and polishing, corrects the straightness problem caused by the cutter abutting against the hot-rolled bar in the peeling process, and eliminates the damage of the cutter cutting to the silver bright material by polishingthrough an abrasive belt grinder.

Description

technical field [0001] The invention relates to the technical field of metal processing, in particular to a production process for grinding silver bright materials for railway springs. Background technique [0002] With the development of the manufacturing industry, the requirements for the internal and external quality of raw materials are constantly improving, and spring materials are the first to bear the brunt, especially for the appearance size and surface defect control. There must be no work-hardening layer. To ensure quality, high-stress stabilizer bars are all made of spring steel and delivered in a silvery state. [0003] At present, the process of grinding silver bright materials for railway springs produced from black leather bars mainly adopts the production process of black leather bar peeling + calendering + grinding wheel grinding. The low degree of coordination makes it difficult to control the quality of the product, resulting in scratches on the surface o...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a production process for railway spring grinding silver bright material, which adopts the combination of softening annealing and stripping machine peeling to increase the average diameter of carbide particles in the hot-rolled bar. So as to effectively reduce the hardness, and then peel it, control the removal amount of the tool to 0.7-1.2mm in the diameter direction, and the peeling tool rotates 6-10mm / rev, so that the hot-rolled bar is not easy to disintegrate, and the metal yield rate is improved; The process combination of two-roll leveler rough straightening and two-roll leveler fine straightening and rolling is adopted. The two-roll leveler rough straightening before the peeling process of the peeling machine improves the straightness of hot-rolled bars and reduces the straightness caused by straightness. The transitional cutting reduces tool wear, and after the peeling process of the peeling machine, the two-roller straightening machine is finely straightened and polished to correct the straightness problem caused by the tool touching the hot-rolled bar during the peeling process, and through five different The roughness of the abrasive belt grinder is used for polishing, realizing rapid processing from rough grinding to fine grinding, and eliminating the damage to silver bright materials caused by cutting tools

Images