Container plate thermal cutting, often can cause thermal deformation, and in industrial applications, the deformation is not completely put an end to this kind of influence, take control and prevention measures to reduce the influence of deformation caused by thermal cutting.
One, the control of the thermal deformation
In CNC cutting machine actual cutting process, due to the uneven heating and cooling for steel plate, the role of internal stress will make by cutting the workpiece in different degree of bending or shift - cutting the thermal deformation, specific performance is shape distortions and cutting size deviation. Materials due to the internal stress can't be balanced and fully eliminated, so can only take some measures to try to reduce the thermal deformation.
Second, the plate surface treatment
Through a series of steel from the steel mills of the intermediate links to cutting workshop, during this time, inevitably produce a heavy steel plate surface scale. In person, also produced in the process of rolling steel plate in a layer of oxide skin adhere to the surface of steel plate. This oxide coating high melting point, it is not easy to burn and melted, increased the preheating time, reduces the cutting speed, at the same time after heating, scale splash around, easy to cause blockage to CNC cutting machine cutting nozzle, reduces the service life of the cutting nozzle, therefore, before cutting, it is necessary to pretreatment on steel plate surface derusting.
Three, cutting workpiece surface treatment before and methods
After the commonly used method is shot blasting rust, paint rust, the small iron ore to steel plate surface with shot blast machine spray, by the impact of the iron ore to steel plate to remove oxide skin, spray flame retardant, good electrical conductivity anticorrosive paint.
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