At present, in various cutting equipment including flame CNC cutting machine, oxygen is used as combustion-supporting gas. It is worth noting that the combustion speed of steel in oxygen is different in different cutting gas processing. In other words It is understood that the cutting speed of the steel plate corresponds to the combination of cutting gas. In addition, in actual production, the cutting speed should be adjusted according to the performance parameters of the cutting nozzle used, the type and purity of the gas, the material and thickness of the steel plate.

If you want to artificially increase the cutting speed of the CNC flame cutting machine to improve the production efficiency and reduce the cutting speed to best improve the section quality, it is impossible. The cutting speed directly affects the stability of the cutting process and the quality of the cut section. , can only make the quality of the cut surface worse. Too fast cutting speed will cause quality defects such as depression and slag hanging on the cutting surface, which may cause cutting interruption; too slow cutting speed will cause the upper edge of the incision to melt and collapse, the lower edge to have rounded corners, and the lower half of the cut surface to be cut. Part of the water-like deep groove pits and so on.

The appropriate cutting speed of the CNC flame cutting machine can be adjusted, and the characteristics of the molten slag sprayed from the incision can be observed. In the normal flame cutting process, the cutting oxygen flow is slightly backward relative to the vertical cutting torch, and the corresponding offset is called the drag amount. When the speed is too low, there will be a back support, and the spark group at the cut under the workpiece will shift to the cutting direction. If the running speed of the cutting torch is increased, the spark group will shift in the opposite direction. When the spark group is parallel to the cutting oxygen flow, the cutting speed is considered to be normal. When the speed is too high, the fire group is obviously backward.