Relationship between cutting quality and speed of high-power plasma cutting equipment

The combination of CNC cutting machine and plasma power supply is called plasma cutting equipment. The disadvantage of the plasma cutting method is that it will produce cracks. Generally, high-power plasma cutting equipment must work according to the speed range specified in the equipment instructions. If the workpiece thickness, material, melting point, thermal conductivity and other parameters are different, you can try cutting Adjust the parameters and choose the best cutting speed, otherwise it will affect the cutting quality of the workpiece. The following is a detailed introduction to the influence of cutting speed on quality.

When the cutting speed of the plasma cutting machine is too fast, the energy of the cutting line is lower than the required value, and the jet in the slit cannot blow off the slag immediately, forming a large amount of dross and reducing the quality of the cutting surface.

When the cutting speed of the plasma cutting machine is lower than the normal value, since the cutting place is the anode of the plasma arc, in order to maintain the stability of the arc itself, the anode spot or anode area must find a place to conduct current near the slit closest to the arc, and at the same time More heat is transferred to the radial direction of the jet, so the incision is widened, and the molten material on both sides of the incision gathers and solidifies at the bottom edge, forming dross that is not easy to clean, and the upper edge of the incision is rounded due to excessive heating and melting .

When the cutting speed of the plasma cutting machine is extremely low, because the incision is too wide, the arc will even be extinguished, making it impossible to cut.

When the plasma cutting machine is at the best cutting speed, the incision quality is better, that is, the incision surface is smoother, the incision is slightly narrowed, and the deformation can be reduced at the same time. It can be seen that good cutting quality is closely related to cutting speed, and a good grasp of cutting speed is the key factor to improve cutting quality.