High-toughness wear-resistance steel

Abstract

The invention discloses high-toughness wear-resistance steel. The steel comprises, by weight, 0.3-0.5% of carbon, 0.6-0.8% of silicon, 0.9-1.2% of tungsten, 2.9-3.9% of chromium, 1.2-1.8% of titanium,2-4% of manganese, 0.9-1.2% of molybdenum, 0.02-0.04% of sulphur and the balance ferrous. The steel has the advantages that the contents of nickel, the chromium and the carbon are defined, other material components with an appropriate proportion are selected, manufactured protecting plates have excellent toughness and more importantly have better hardness, the protecting plates have the advantages of wear resistance, impact resistance and the like, all requirements on mechanical performance during the ball blast process are met, the service life is prolonged, the performance of an alloy structure is improved by rapid cooling and reasonable quenching process, the impacting toughness is good, the comprehensive mechanical performance is good, and therefore manufactured products reach the performance requirements of wear resistance and moderate impact.

Description

technical field [0001] The invention relates to a guard plate steel material for a shot blasting chamber, in particular to a high-toughness wear-resistant 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 projectiles will bypass the workpiece and hit the chamber of the shot blasting machine. After a long time, the high-speed projectiles will penetrate the chamber. Therefore, in the prior art, guard plates are often laid in the chamber of the shot blasting machine. There are many types of guard plates, generally using high-chromium cast iron or manganese steel plate, but in the face of high-speed jet projectiles, ...

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 projectiles will bypass the workpiece and hit the chamber of the shot blasting machine. After a long time, the high-speed projectiles will penetrate the chamber. Therefore, in the prior art, guard plates are often laid in the chamber of the shot blasting machine. There are many types of guard plates, generally using high-chromium cast iron or manganese steel plate, but in the face of high-speed jet projectiles, the strength of the existing guard plates is still not good enough due to material problems, and the service life is not long, so use a period of It will be replaced after a certain period of time, which will not only cause a waste of cost but also delay the construction period and affect production efficiency