Reasonable cutting procedure of NM500 wear plate

CNC cutting machine is controlled by computer in real time to complete automatic cutting, and its identification is program, so the programming method of parts on NM500 wear plate plays a decisive role in cutting quality.

When cutting slender parts according to the conventional method, the NM500 wear plate will often appear arching and warping due to heat deformation. If the operation is not noticed, it will touch the cutting nozzle, which will affect the smooth cutting. It is easy to cause accidents such as flameout, bending and cutting torch breaking. Therefore, local water spray cooling can be adopted; "bridge" joint cutting, that is to say, a few sections of 15-30mm "bridge" are reserved for cutting edge, which are not cut, so that they are connected with the motherboard through the "bridge" to contain cold shrinkage and camber; two cutting torches cut the long side joints on both sides of the web at the same time, and finally cut horizontally to the required size, which can effectively control the cutting quality of the long and thin parts.

When the parts with holes are cut, the inner holes of the parts shall be cut first, and then the periphery of the parts shall be cut, so as to ensure the dimensional accuracy of the inner holes and the periphery. If the hole is perforated properly, the time for cleaning the cutting nozzle can be greatly reduced, and the working efficiency can be improved. In addition, the diameter of the inner hole can be further reduced, and the plate thickness can be appropriately increased. In order to reduce the preheating time, the preheating oxygen should be increased properly, the reasonable perforation point should be selected, and the change of the preheating position of the NM500 wear plate should be observed. When the cutting temperature is reached, the cutting oxygen control valve should be opened, and the speed should be increased properly until all the cutting oxygen control valves are opened to complete the perforation action.