Manufacturing method of low-alloy wear-resistance steel

Abstract

The invention discloses a manufacturing method of low-alloy wear-resistance steel. The manufacturing method comprises the following steps of A, preparing, B, smelting, wherein a smelting furnace is vacuumized, and prepared materials are put in a vacuum smelting furnace for smelting; C, pouring; D, cooling, wherein after being subjected to air cooling, castings are subjected to water cooling, and acondensing device is adopted for condensing; E, annealing, wherein the castings are subjected to heating and heat preservation after being grinded, then temperature rising and heat preservation are conducted, and afterwards, quick water cooling is conducted; F, quenching, wherein the castings are heated, quenched, and timely tempered after being quenched. The manufacturing method has the following advantages that the content of carbon and the proportion of chromium to nickel to carbon are reasonably limited, other material components with a proper proportion are selected, and smelting is conducted after vacuumizing; so that the dissolving uniformity of a solution of the steel is good, cooling is conducted after casting, and the low-alloy wear-resistance steel is stepwise cooled in three modes after being poured; the casting quality is guaranteed, a manufactured protection plate has high hardness, tenacity, wear resistance, shock resistance and other performance, and meets all requirements for the mechanical performance in a shot blasting process, and the service life is prolonged.

Description

technical field [0001] The invention relates to a guard plate steel material for a shot blasting chamber, in particular to a manufacturing method of a low-alloy 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-sp...

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