Hot galvanizing technology process for steel iron plate

A technological process, hot-dip galvanizing technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problems of poor coating compactness, coating corrosion, unsightly color, etc., to achieve regular surface and uniform coating Effect

Inactive Publication Date: 2017-01-04
周峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional hot-plating method has poor coating density, unattractive color, poor corrosion resistance, and prone to coating corrosion, which affects the service life

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with embodiments.

[0019] A kind of steel plate hot-dip galvanizing technological process, described technology comprises the following steps:

[0020] (1) Degreasing: Use chemical degreasing or water-based metal degreasing cleaning agent to degrease until the workpiece is completely soaked by water;

[0021] (2) Pickling: use dilute sulfuric acid or hydrochloric acid for pickling, and add corrosion inhibitors and fog inhibitors at the same time;

[0022] (3) Immersion aid: immerse the workpiece after pickling in the mixed solution of ammonium chloride and zinc chloride;

[0023] (4) Drying and preheating: place the workpiece in an oven for drying, add anti-explosive agent, and preheat at a temperature of 100~120°C for 20 minutes;

[0024] (5) Hot-dip: hot-dip the workpiece after drying and preheating in the plating solution;

[0025] (6) Finishing: Use a vibrator to clean the surface of the work...

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PUM

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Abstract

The invention discloses a hot galvanizing technology process for a steel iron plate. A hot galvanizing technology comprises the following steps of degreasing, acid pickling, plating auxiliary soaking, drying preheating, heat plating, organizing, passivating, cooling and inspecting. By means of the hot galvanizing technology, a plating layer of a workpiece has the advantages of being compact, free of skip plating, regular in surface, uniform and resistant to corrosion, and the hot galvanizing technology is suitable for being applied to a hot galvanizing alloy layer on the surface of steel iron.

Description

technical field [0001] The invention relates to the field of hot-dip galvanizing, in particular to a process flow of hot-dip galvanizing of iron and steel plates. Background technique [0002] In recent years, in the fields of automobiles, home appliances, building materials, etc., surface-treated steel sheets to which rust resistance has been imparted to raw steel sheets have been used, among which hot-dip galvanized steel sheets having excellent rust resistance are used. In particular, carmakers in Europe and the United States consider improving rust resistance by applying hot-dip galvanized steel sheets that simply increase the coating thickness. In addition, in East Asia, where economic growth is remarkable, the situation is that there is expected to be a large demand for steel sheets for automobiles. However, the traditional hot-dip coating method has poor density, unattractive color, poor corrosion resistance, and prone to corrosion of the coating, which affects the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/02C23C2/06C23C2/26
CPCC23C2/06C23C2/02C23C2/26
Inventor 周峰
Owner 周峰
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