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Causes of cracking of PC endurance board

by:UNQ     2021-03-10
u003cbru003eu003cpu003e1. Transport and storage must be properly lined, packaged, and laid flat, because any slight damage (such as scratches) on the surface of the board will develop into a crack. And do not store the plate and other chemical substances in the same place, because volatile matter will cause chemical stress cracking on the surface of the plateu003c/pu003eu003cpu003e2. Regardless of the type of processing of the PC endurance board, the processing tools or tools must not be If any damage is caused to the non-processing part of the plate, the cut should be as smooth as possible. Minor damage can also cause severe cracking. u003c/pu003eu003cpu003e3. Do not damage or remove the protective film before the installation of the PC endurance board, so as not to scratch the surfaceu003c/pu003eu003cpu003e4. It is never allowed to nail the board directly to the frame, otherwise it will be The expansion of the sheet produces high stress and damages the edge of the perforationu003c/pu003eu003cpu003e5. If the curvature of the bent sheet is too small, the mechanical strength and chemical resistance of the sheet will drop sharply, in order to avoid exposure to the outside Dangerous stress cracking occurs on the side of the PC endurance board. The bending radius of the PC endurance board should not be less than 175 times the thickness of the board.u003c/pu003eu003cpu003eThe internal stress of the PC endurance board is formed during the process of extrusion molding and cooling. The PC endurance board will experience a stress relaxation effect when the shape of the PC endurance board is basically unchanged during placement or use, and some internal stress can be partially eliminated. However, the PC endurance board that only undergoes limited relaxation is difficult to completely eliminate these stresses, and there are stresses in it. If the external stress is not increased during use, local deformation of the surface layer and close to the surface will occur. And from here, it is easy to break (small cracks, cracks). Therefore, we must avoid those incorrect or excessive external stresses during use. u003c/pu003eu003c/pu003eu003c/pu003eu003c/pu003eu003c/pu003eu003c/pu003eu003c/pu003eu003c/pu003e
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