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Repairing method for leakage of installation screw hole on installation surface of integration box

A repair method and installation surface technology, applied in the field of mechanical parts repair technology, can solve the problems of installation screw hole leakage and economic loss, and achieve the effects of avoiding scrap, prolonging service life and saving production costs.

Inactive Publication Date: 2011-01-26
CRRC QISHUYAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the existing installation screw holes on the installation surface of the integrated box are prone to leakage and cause great economic losses, the present invention provides a method for repairing the leakage of the installation screw holes on the installation surface of the integrated box

Method used

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  • Repairing method for leakage of installation screw hole on installation surface of integration box
  • Repairing method for leakage of installation screw hole on installation surface of integration box

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Embodiment

[0030] A method for repairing leakage of mounting screw holes on the mounting surface of an integrated box is characterized by comprising the following steps:

[0031] a. Ream the installation screw hole with leakage problem into a threaded hole 1 of M24×1.5, bottom hole ￠22.5mm, the thread adopts fine thread, the depth exceeds the leakage point by more than 5mm, and the bottom is spot-faced;

[0032] b. The copper gasket 2 with a thickness of 1.5mm and ￠22.5mm, with sharp edges and blunt edges, was burned red with oxyacetylene to make it annealed and softened;

[0033] c. Clean the inside of the threaded hole 1, trim the copper gasket 2 and place it at the bottom of the threaded hole 1;

[0034] d. Turned M24×1.5 threaded sleeve 3, the length of which exceeds the depth of threaded hole 1 by 10mm;

[0035] e. Apply thread locking agent evenly on the surface of the screw sleeve 3, screw it into the threaded hole 1, and tighten it until the copper gasket 2 is completely pressed...

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Abstract

The invention relates to the field of mechanical parts repair processes, in particular to a repairing method for leakage of an installation screw hole on the installation surface of an integration box. The repairing method comprises the following steps of: a. reaming the installation screw hole having leakage problem to a screw thread hole; b. turning a matched red copper gasket; c. cleaning the screw thread hole, and placing the red copper gasket to the bottom of the screw hole; d. turning a matched screw sleeve; e. uniformly coating screw thread locking agent on the outside of the screw sleeve and screwing the screw sleeve to the screw thread hole; f. milling the outer end of the screw sleeve to be in parallel with the installation surface of the integration box after the screw thread locking agent is cured; and g. drilling a new installation screw hole on the screw sleeve. The repairing method is simple, practical and convenient, has good effect for the leakage problem of the installation screw hole caused by shrinkage cavity and porousness, avoids scrapping of parts, prolongs the service life of the parts, and greatly saves production cost.

Description

technical field [0001] The invention relates to the technical field of repairing mechanical parts, in particular to a repairing method for leaking mounting screw holes on the mounting surface of an integrated box. Background technique [0002] Since the integrated box is an integral ductile iron casting, the cavity is complex and the casting process is poor. After drilling, there are problems of shrinkage and looseness in the mounting screw holes on the mounting surface, resulting in the penetration of the mounting screw holes with the oil passage or water passage. Leakage occurs, making parts unusable and scrapped, causing great economic losses. Contents of the invention [0003] In order to overcome the problem that the existing installation screw holes on the installation surface of the integrated box are prone to leakage and cause great economic losses, the present invention provides a method for repairing the leakage of the installation screw holes on the installation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00
Inventor 路亚光
Owner CRRC QISHUYAN CO LTD
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