Protecting method for metal component screwed hole in hot-dip galvanizing antiseptic treatment t

Abstract

The invention provides a method for protecting a screwed hole of a metal part in galvanizing antiseptic treatment. The method comprises: a first step of mastic preparation, pouring gypsum powder into a container, filling water into the container according to a volume ratio of the gypsum powder to the water of 3-4:1 to be sufficiently and evenly stirred; a second step, filling the mastic into screwed hole to be protected of the metal part by an iron panel, and extruding the mastic tightly after filling; a third step, carrying out the galvanizing antiseptic treatment on the metal part filled with the mastic; and a fourth step: taking out the mastic, and cleaning the screwed hole. The protecting method does not increase the thickness of a galvanizing coat of the screwed hole of the metal part in the process of carrying out the galvanizing antiseptic treatment on the surface of the metal part, thereby avoiding the problem that a processed screwed hole can not be assembled because of increased thickness of the galvanizing coat and other problems, and ensuring the preprocessed screw quality after the metal part is galvanized. The method is simple and feasible, and can greatly improve labor efficiency.

Description

technical field [0001] The invention relates to a method for protecting the pre-processed parts during the anti-corrosion treatment process of the surface of metal parts, specifically a method for protecting the pre-processed threaded holes on the surface of metal parts during the anti-corrosion treatment process of hot-dip galvanizing Methods. Background technique [0002] At present, during the process of hot-dip galvanizing anticorrosion treatment on the surface of metal parts, no protective treatment is done for the threaded holes on the metal parts, and the thickness of the surface of the metal parts, including the thickness of the threaded part at the pre-processed threaded hole, will increase. Generally, when processing threaded holes on metal parts, the thickness of the hot-dip galvanized layer produced during the hot-dip galvanizing anti-corrosion treatment process should be taken into consideration. However, the difficulty is that it is difficult to determine and ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the thickness of the galvanized layer is increased for the pre-processed threaded hole during the process of hot-dip zinc anticorrosion treatment on the surface of the metal part, which causes difficulties in the installation of the metal part, the invention provides a threaded hole of the metal part The protection method in the hot-dip galvanizing anti-corrosion treatment. With this method, the staff can make the surface of the metal parts during the hot-dip galvanizing anti-corrosion treatment without increasing the thickness of the galvanizing layer, and avoiding the galvanizing due to galvanizing when processing threaded holes. The increase of the thickness of the zinc layer, and the difficulty of accurately determining the thickness of hot-dip galvanizing, solves the problem of accurate installation of hot-dip galvanized metal parts

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