Repair technique for fan blade mould

A technology for fan blades and moulds, which is applied in the repair process of fan blade moulds, can solve problems such as deformation and change of geometric dimensions, and achieve the effects of simple and reasonable technology, prevention of decline, and extended service life

Active Publication Date: 2013-07-24
GUODIAN UNITED POWER TECH LIANYUNGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1, a repairing process of a fan blade mold, the specific steps are as follows:

[0013] (1) Adjustment of mold elevation: use the method of adjusting the corner bolts to adjust the mold elevation according to the mold standard elevation to adjust the mold SS surface elevation in place;

[0014] (2) Mold clamping: use the turning mechanism to combine the PS surface and SS of the mold to realize the empty mold clamping, and use the adjusting device to adjust the opening size to the standard value;

[0015] (3) Mold surface repair: check the mold clamping gap, and determine the repair amount according to the mold clamping gap standard; for the area where the mold clamping gap exceeds the standard value of 1.5mm, the mold clamping gap in front and rear edge of the mold PS exceeds the standard value of 1.5mm The gel coat layer of the area is roughened separately, but the gel coat layer is not penetrated; then the polished area is cleaned, and several layers of FRP are ha...

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PUM

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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] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C73/00
Inventor 何明陶生金王漫周行野王璐王小圆
Owner GUODIAN UNITED POWER TECH LIANYUNGANG CO LTD
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