Methods for preparing and applying hot-dip galvanized screw thread protective agent

Abstract

The invention provides methods for preparing and applying a hot-dip galvanized screw thread protective agent. The preparation method comprises the steps as follows: dosing and a preparing slurry: adding 50 grams of silicone resin, 35 grams of low melting point glass powder, 10 grams of chromium sesquioxide, 25 grams of china clay and 15 grams of aluminite powder, and stirring the mixture in a blender of 1000-2000 rpm after dosing, so that the protective agent slurry is formed. The applying method comprises the steps as follows: putting a workpiece under an environment at the temperature of 5 DEG C, coating screw thread areas of the wokpiece by the protective agent slurry, controlling the temperature of the protective agent slurry, and laying aside at the normal temperature, so that the protective agent is attached to the screw threads of the hot-dip galvanized workpiece in a dry state. The protective agent slurry can protect the screw threads against being pasted by zinc dross and an excessively thick zinc coating layer, so that defects are avoided, and the usage performance of the screw threads of a galvanized workpiece is not affected. The protective agent slurry can be applied to the methods for preparing and applying the protective agent of the screw threads of the hot-dip galvanized workpiece.

Description

technical field [0001] The invention provides preparation and application technology in the field of metal galvanizing, in particular a method for preparing and coating a hot-dip galvanized thread button protector. Background technique [0002] At present, when the protective agent is not used for the galvanized threaded thread of the workpiece, the threaded thread is stained with zinc material during hot-dip galvanizing, causing the threaded thread of the workpiece to be smeared by zinc slag and thicker zinc layer, and the size of the threaded thread becomes larger or changes. Small can not be connected with other thread fasteners. As a result, the hot-dip galvanized thread button end cannot be used normally, and even the entire workpiece is discarded, resulting in waste of the workpiece, and a waste of galvanized materials and working hours. Contents of the invention [0003] In order to overcome the defects of existing galvanized workpiece threaded buttons, the invent...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of existing galvanized workpiece threaded buttons, the invention provides a method for preparing and coating a hot-dip galvanized threaded button protector