Galvanized sheet surface protection coating solution, galvanized sheet and welding method

A technology of protective coating and surface coating, applied in coating, welding equipment, metal material coating process, etc., can solve the problems of complex operation process, unsuitable for large-scale welding processing of galvanized sheet, high cost, and reduce Subsequent processes, the effect of reducing blackening problems and suppressing volatilization

Active Publication Date: 2021-08-31
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this patent document achieves seam welding without damaging the zinc layer, it is mainly used for welding galvanized barrels, and the operation process is relatively complicated and the cost is high, so it is not suitable for large-scale welding of galvanized sheets

Method used

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  • Galvanized sheet surface protection coating solution, galvanized sheet and welding method
  • Galvanized sheet surface protection coating solution, galvanized sheet and welding method

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A protective coating solution for the surface of a galvanized sheet, which is prepared from the following materials: 5 parts of alumina, 20 parts of potassium silicate, 20 parts of silica sol, 20 parts of methyl silicate, 10 parts of talcum powder, hydrolyzed polymalay 1 part of acid anhydride, 1 part of deionized water, both are parts by mass.

Embodiment 2

[0024] A protective coating solution for the surface of a galvanized sheet, which is prepared from the following materials: 15 parts of aluminum oxide, 80 parts of potassium silicate, 100 parts of silica sol, 30 parts of methyl silicate, 20 parts of talcum powder, hydrolyzed polymalay 5 parts of acid anhydride, 20 parts of deionized water, both are parts by mass.

Embodiment 3

[0026] A protective coating solution for the surface of a galvanized sheet, which is prepared from the following materials: 10 parts of alumina, 50 parts of potassium silicate, 70 parts of silica sol, 26 parts of methyl silicate, 14 parts of talcum powder, hydrolyzed polymalay 3 parts of acid anhydride, 10 parts of deionized water, both are parts by mass.

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Abstract

The invention discloses a galvanized sheet surface protection coating solution, a galvanized sheet and a welding method. The galvanized sheet surface protection coating solution is prepared from the following materials in parts by mass: 5-15 parts of aluminum oxide, 20-80 parts of potash water glass, 20-100 parts of silica sol, 20-30 parts of methyl silicic acid, 10-20 parts of talcum powder, 1-5 parts of hydrolytic polymaleic anhydride and 1-20 parts of deionized water. According to the method, the problem of blackening of the galvanized sheet during welding is solved, the attractiveness of welding seams is enhanced, subsequent procedures are reduced, the production efficiency is improved, and manpower and time are saved.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to a welding method capable of protecting the surface coating of galvanized sheets and improving the welding aesthetics of galvanized sheets, and also relates to a galvanized sheet surface protection coating solution, a galvanized sheet . Background technique [0002] Due to its good anti-corrosion properties, galvanized sheet is widely used in the processing and production of construction, machinery and other fields, but there are many problems in the welding process of galvanized sheet. The reason is that the physical properties of the galvanized layer and the base steel are significantly different. The melting point of the galvanized layer is 420°C and the boiling point is 908°C, while the melting point of the base steel is 1300°C and the boiling point is 2861°C, which means that the gasification of the zinc layer will take priority for the melting of steel. Genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/04C09D7/61B23K9/16B23K9/235C23C26/00
CPCC09D1/04C09D7/61B23K9/235B23K9/16C23C26/00
Inventor 杨建国郑卢旭冯道臣陈泽
Owner ZHEJIANG UNIV OF TECH
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