Repair technique for fan blade mould

Abstract

The invention relates to a repair technique for a fan blade mould, which is characterized by comprising the following steps of: elevating the mould according to a mould standard so as to elevate and adjust an SS surface of the mould in place by using a method of adjusting an anchor bolt; closing the mould; repairing the molded surface of the mould; detecting clearances of the closed mould, and determining the repair volume according to the standard requirement of the clearances of the closed mould; respectively polishing areas with the clearances of the closed mould being 1.5mm more than a standard value, cleaning the polished areas, and manually pasting a plurality of layers of glass fiber reinforced plastics on the polished areas layer by layer; and polishing areas with the clearances of the closed mould being 1.5mm less than the standard value, cleaning the polished areas, repairing the polished areas by using an original mould gel coat system, and wet sanding after a gel coat is cured; and finally, wet sanding, hole sealing and polishing the mould wholly, and carrying out air impermeability detection. According to the repair technique for the fan blade mould provided by the invention, the problems of maintenance about abrasion of the molded surface of the mould, great change of elevation of the mould and great transformation of geometric dimensioning is solved, the maneuverability are strong, and the service life of the mould is prolonged.

Description

Technical field [0001] The invention relates to a repairing process for a mold, in particular to a repairing process for a fan blade mold. Background technique [0002] In recent years, with the development of single wind power unit capacity in the direction of large megawatts, the aerodynamic design of fan blades has become more and more accurate, and the quality of the mold surface directly affects the aerodynamic performance and quality of the fan blades. Therefore, the mold must have precise geometric dimensions, a smooth working surface, good air-tightness and a certain degree of hardness. After long-term use of FRP molds, the working surface and geometric dimensions will generally show varying degrees of damage and deformation. The mold repair technology in the prior art is still only the repair of the mold surface, and it is almost helpless for major changes in the elevation of the mold and major deformations in the geometric dimensions. Summary of the invention [0003] ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a reasonable and operable fan blade mold repair process for the maintenance of the fan blade die in actual production, which effectively solves the problem of mold repair after long-term use. Major changes in mold elevation and major deformations in geometric dimensions