Manufacturing method of wear-resisting alloy steel guard sleeve

Abstract

The invention discloses a manufacturing method of a wear-resisting alloy steel guard sleeve applied to a shot blasting chamber. The manufacturing method includes the following steps of A, preparationof materials; B, smelting; C, pouring; D, cooling, wherein a casting obtained in step C is cooled by wind for 20-30 min, then cooled in water for 15-25 min and condensed for 10-15 min through a condensation device; E, annealing, wherein the casting obtained after cooling in step D is ground, machined and heated, the temperature is maintained constant, then raised and remained constant, and coolingthrough water is carried out quickly; F, quenching, wherein the casting is heated to 900-1,000 DEG C for quenching, and tempering is conducted in time after quenching. The method has the following advantages that since appropriate materials and an appropriate proportion are selected, vacuum pumping is conducted, then smelting is carried out, correspondingly the dissolution uniformity of a solution is high, cooling is carried out through three modes step by step after pouring, and the quality of casting is ensured; therefore, a guard board has high hardness, intensity and tenacity and achievesgreat mechanical performance, the service life is long, and better economic performance and comprehensive mechanical performance are achieved.

Description

technical field [0001] The invention relates to a high manganese wear-resistant steel rolling sheath material, in particular to a method for manufacturing a wear-resistant alloy steel sheath used in a shot blasting chamber. Background technique [0002] The shot blasting machine uses a high-speed rotating shot blaster to spray the projectile at high speed, so that the projectile has a certain kinetic energy, and the high-speed linear motion projectile directly impacts on the surface of the workpiece to remove the rust on the surface of the workpiece, but the shot blasting machine is running During the shot blasting process, the projectile will bypass the workpiece and hit the roller in the shot blasting machine chamber. After a long time, the high-speed projectile will penetrate the roller. Therefore, in the prior art, it is often installed on the roller of the shot blasting machine room. Sheath, there are many types of existing protective plates, generally high-chromium cas...

AI Technical Summary

Problems solved by technology

[0002] The shot blasting machine uses a high-speed rotating shot blaster to spray the projectile at high speed, so that the projectile has a certain kinetic energy, and the high-speed linear motion projectile directly impacts on the surface of the workpiece to remove the rust on the surface of the workpiece, but the shot blasting machine is running During the shot blasting process, the projectile will bypass the workpiece and hit the roller in the shot blasting machine chamber. After a long time, the high-speed projectile will penetrate the roller. Therefore, in the prior art, it is often installed on the roller of the shot blasting machine room. Sheath, there are many types of existing protective plates, generally high-chromium cast iron or manganese steel materials, but in the face of high-speed jet projectiles, the strength of the existing sheath is still not good enough due to material problems, and the service life is not good enough Long, so it must be replaced after a period of use, which not only causes waste of cost but also delays the construction period and affects production efficiency