A kind of cutting and grinding processing method of thick FRP laminate

Abstract

The invention discloses a cutting and grinding processing method for a thick glass-steel laminated plate, which comprises the following steps: S1: using a tool to cut the vacuum bag film at the part protruding from the flange platform of the thick glass-steel laminated plate beyond the shell mould; S2: Carry out scribing marks on the surface to be processed that is higher than the part, and determine at least two marking lines; S3: Use a cutting machine to cut vertical grooves along the marking lines to form shallow grooves, and the length of the shallow grooves is consistent with the length to be processed; S4 : Use an angle grinder to grind the surface of the area where the shallow groove is located until the shallow groove is about to be invisible; S5: Keep steps S3 and S4 in a cycle until the required mold-closing bonding surface is formed after the higher part is ground. The invention has the advantages of convenient operation, high processing quality, early release of stress and deformation, and prevention of micro cracks and relatively large residual stress.

Description

technical field [0001] The invention mainly relates to the processing technology of the thick glass-steel laminated plate, in particular to a cutting and grinding processing method of the thick glass-steel laminated plate. Background technique [0002] During the heat curing process of FRP, due to the change of the external environment, the heat release during the resin curing reaction, and the difference in thermal conductivity of the mold and auxiliary materials, there is a temperature gradient in the actual curing process of the laminate; the uneven temperature field makes each layer The resins inside are not cured at the same time, resulting in residual stress and residual deformation in FRP laminates. In order to facilitate the demoulding and the flatness of the laminate bonding, the end of the cured FRP laminate will be higher than a part of the shell mold, so it is necessary to cut and polish the end of the FRP laminate that is higher than a part of the shell mold to ...

AI Technical Summary

Problems solved by technology

[0002] During the heat curing process of FRP, due to the change of the external environment, the heat release during the resin curing reaction, and the difference in thermal conductivity of the mold and auxiliary materials, there is a temperature gradient in the actual curing process of the laminate; the uneven temperature field makes each layer The resins inside are not cured at the same time, resulting in residual stress and residual deformation in FRP laminates

In order to facilitate the demoulding and the flatness of the laminate bonding, the end of the cured FRP laminate will be higher than a part of the shell mold, so it is necessary to cut and polish the end of the FRP laminate that is higher than a part of the shell mold to ensure smoothness degree, but the cured FRP laminate produces severe plastic deformation in the process of cutting and grinding, and there are large stress and strain and local high temperature

The existing conventional method is to use machinery to directly cut the raised part transversely after curing, and then polish it, which is prone to produce micro-cracks and large residual stress. The stress and deformation cannot be released during conventional cutting, and it is easy to make the interlayer shear performance lower FRP laminates are cut and polished

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