For steel structure manufacturers, the material must be surface pretreated before cutting. During the plate cutting process, a large number of welding contour lines and subsequent process marks need to be scribed and positioned. Surface cutting and rust must be removed during sheet cutting, scribing and welding. Only in this way can the cutting speed and cutting quality and welding quality be improved. If you do not remove these protective layers and rust
For steel structure manufacturers, the material must be surface pretreated before cutting. During the plate cutting process, a large number of welding contour lines and subsequent process marks need to be scribed and positioned. Surface cutting and rust must be removed during sheet cutting, scribing and welding. Only in this way can the cutting speed and cutting quality and welding quality be improved. If these protective layers and rust are not removed, the cutting speed will be reduced, and in some cases, severe defects on the cutting surface will be generated, which need to be repaired, affecting and cutting efficiency. In addition, during the welding process, fillet welds will be exceeded, which will cause unpredictable deformation and subsequent surface position deviations, which will lead to expensive production costs. At the same time, the surface scribe lines are blurred. Affects the normal progress of subsequent processes.
There are many ways to solve these problems. At present, the commonly used method is mainly to install a sand blasting device on a CNC flame / plasma cutting machine. This method uses fine sand to spray on the cutting and scribing surface at high speed, so as to clean the metal surface. Can more or less play the role of cleaning the welding surface. But today’s mastered sandblasting technology can only work at a speed of 3m / min, and the surface cleaning rate is 65%. This rate can only meet the requirements of cutting. At present, powder spraying, plasma arc scribing and inkjet scribing have reached a speed of 20m / min. Obviously, using this method, it can not completely meet the process requirements of high-speed cutting.
It is necessary to master a device to match the surface treatment rate with the scribing speed, so that the production efficiency can be improved. Thus, a high-speed and automated cutting method is truly realized.
