Manufacturing method of low-carbon alloy steel

Abstract

The invention discloses a sheath for a shot blasting chamber, and particularly relates to a sheath made of low-carbon alloy steel. The sheath is prepared from, by weight, 0.20-0.23% of carbon, 1.30-1.50% of silicon, 0.6-0.8% of manganese, 1.5-1.8% of chromium, 1.5-1.8% of nickel, 0.6-0.7% of molybdenum, 0.25-0.35% of copper, 1-2% of silicon and the balance iron. Compared with the prior art, the sheath has the following advantages that since the content of carbon is reasonably defined, the proportion of chromium to nickel to carbon is specifically defined, and meanwhile the other material components with the proper proportion are selected, a manufactured protection plate has high rigidity, more importantly, the protection plate has high tenacity, so that the protection plate has performancelike wear resistance and shock resistance, all requirements for mechanical performance in a shot blasting process are met, and the service life is prolonged; moreover, by means of a processing technology, the integration of various components is good, and the alloy structure performance is improved, so that the manufactured product has wear resistance and shock resistance.

Description

technical field [0001] The invention relates to a method for manufacturing a material for a sheath of a shot blasting chamber, in particular to a method for manufacturing a low-carbon alloy steel. 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 of the shot blasting machine chamber. After a long time, the high-speed projectile will penetrate the chamber body. Therefore, in the prior art, the roller in the shot blasting machine chamber is often There are many types of existing sheaths, generally using high-chromium cast iron or manganese steel plates, but in the fa...

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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 of the shot blasting machine chamber. After a long time, the high-speed projectile will penetrate the chamber body. Therefore, in the prior art, the roller in the shot blasting machine chamber is often There are many types of existing sheaths, generally using high-chromium cast iron or manganese steel plates, but in the face of high-speed jet projectiles, the strength of the existing sheaths is still not good enough due to material and process problems. The service life is not 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