EN10025 S235JR steel plate cutting includes cold cutting and hot cutting. Cold cutting includes water jet cutting, shear cutting, saw cutting or grinding cutting. Hot cutting includes flame cutting, plasma cutting and laser cutting. The flame cutting method of thick EN10025 S235JR steel plate is as simple as ordinary low carbon steel and low alloy steel, but attention should be paid to the thickness of thick EN10025 S235JR steel plate cutting!
The tendency of crack on cutting edge increases with the increase of thickness and hardness of EN10025 S235JR steel plate. In order to prevent the occurrence of steel cutting cracks, the following recommendations should be followed when cutting:
Cutting cracks: EN10025 S235JR steel plate cutting cracks are similar to hydrogen-induced cracks that occur during welding. If the EN10025 S235JR steel plate breaks at the cutting edge, it will only appear within 48 hours to a few weeks of cutting thickness. Therefore, the cutting crack is a delayed crack, the thickness and hardness of the EN10025 S235JR steel plate, the greater the cutting crack will appear.
Preheating cutting: the most effective way to prevent steel cutting cracks is preheating before cutting. Before flame cutting, the EN10025 S235JR steel plate is usually preheated, and the preheating temperature mainly depends on the quality grade and thickness of the EN10025 S235JR steel plate. Preheating can be done by using flamethrowers and electronic heating pads, or by using a heating furnace.
