Problems to be noticed and avoided in the cutting of wear-resistant steel plates

Most steel plates cutting involve cold cutting and hot cutting. The same is true for wear-resistant steel plates. Cold cutting refers to water jet cutting, shearing, sawing or abrasive cutting; hot cutting includes flame cutting, plasma cutting and laser cutting.

When cutting wear-resistant steel thick plates, with the increase of the thickness and hardness of the steel plate, the tendency of cracks on the cutting edge increases. In order to prevent the occurrence of steel plate cutting cracks, whether it is hot or cold cutting, attention must be paid to related requirements to improve cutting quality.

If the cutting edge of the wear-resistant steel plate produces cracks, it will appear within 48 hours to within a week after cutting. Therefore, the cutting crack is a delayed crack. The greater the thickness and hardness of the steel plate, the larger the cutting crack will appear. A more effective way to prevent steel plate cutting cracks is to preheat before cutting.

The preheating temperature of the wear-resistant steel plate mainly depends on the quality level and thickness of the steel plate. The preheating method can be carried out by flame burning gun, electronic heating pad, or heating furnace. In order to determine the preheating effect of the steel plate, the required temperature should be tested at the heating point. It should be noted that the entire interface of the wear-resistant steel plate must be evenly heated to avoid local overheating in the area contacting the heat source.