High-strength wear-resistance steel

Abstract

The invention discloses high-strength wear-resistance steel. The steel comprises, by weight, 3.9-4.5% of carbon, 0.6-0.8% of tungsten, 1.3-2.5% of copper, 1.2-1.8% of rare earth, 4-6% of manganese, 2.9-3.9% of chromium, 0.7-1.5% of nickel, 0.02-0.04% of sulphur and the balance ferrous. Compared with the prior art, the steel has the advantages that the content of the carbon is reasonably defined, the proportioning between the nickel, the chromium and the carbon is particularly defined, other material components with an appropriate proportion are selected, so that manufactured protecting plateshave extremely high hardness and more importantly have better toughness, 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 using strong to perform rapid cooling and reasonable quenching process, finally the hardness of the alloy reaches HRC 150-165, the impacting toughness is good, the comprehensive mechanical performance is good, manufactured products reach the performance requirementsof wear resistance and moderate impact, and the service life of the alloy is 10-12 times longer than Hadfield's manganese steel.

Description

technical field [0001] The invention relates to a guard plate steel material for a shot blasting chamber, in particular to a high-strength 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, t...

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