Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for improving wettability of steel in galvanizing zinc

A wettability and wetting modification technology, applied in metal material coating process, ion implantation coating, coating and other directions, can solve the problems of leakage plating, hinder the wetting of zinc liquid and steel, etc. Quality, low cost, improved wettability

Active Publication Date: 2020-02-11
CHANGZHOU UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When selective oxidation occurs, oxides will be formed on the surface of TWIP steel, which will hinder the wetting of zinc liquid and steel, resulting in missing plating and other phenomena

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving wettability of steel in galvanizing zinc
  • Method for improving wettability of steel in galvanizing zinc
  • Method for improving wettability of steel in galvanizing zinc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for improving the wettability of steel in molten zinc, comprising the steps of:

[0025] (1) Process the TWIP steel plate into a steel sheet of 10mm×18mm×1mm, carry out surface grinding and polishing pretreatment on it, and carry out ultrasonic cleaning with alcohol and acetone; pass figure 1 The shown high vacuum resistance evaporation coating machine evaporates a 5nm Sn layer (the model of the high vacuum resistance evaporation coating machine is ZHD-300M3, the same below);

[0026] (2) Put the steel plate treated in step (1) into the quartz tube, and then sag the middle of the quartz tube to separate the quartz tube into two interconnected cavities, and then put the prepared Cr+Cr 2 o 3 Powder, the steel plate and the powder are separately placed in the two cavities, and then sealed and evacuated;

[0027](3) the annealing temperature of setting steel plate is 820 ℃, and the temperature of powder is 800 ℃, the quartz tube after sealing in step (2) is put i...

Embodiment 2

[0032] A method for improving the wettability of steel in molten zinc, comprising the steps of:

[0033] (1) Process the TWIP steel plate into a steel sheet of 10mm×18mm×1mm, carry out surface grinding, polishing pretreatment, and carry out ultrasonic cleaning with alcohol and acetone; vapor-deposit a 5nm Bi layer by a high vacuum resistance evaporation coating machine;

[0034] (2) Put the steel plate treated in step (1) into the quartz tube, and then sag the middle of the quartz tube to separate the quartz tube into two interconnected cavities, and then put the prepared Cr+Cr 2 o 3 Powder, the steel plate and the powder are separately placed in the two cavities, and then sealed and evacuated;

[0035] (3) the annealing temperature of setting steel plate is 820 ℃, and the temperature of powder is 800 ℃, the quartz tube after sealing in step (2) is put into such as figure 2 In the double-temperature tube furnace shown, the steel plate is annealed for 300s, and the steel pla...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for improving the wettability of steel in galvanizing zinc. The method comprises the following steps that firstly, a layer of Sn or Bi film is evaporated on the surface of the steel subjected to surface pretreatment in a vacuum environment, then the evaporated steel is selectively oxidized, then the active elements Sn or Bi are enriched at the grain boundary so asto prepare the wet modified steel, and the steel in the evaporation process is not heated. Compared with the prior art, the method has the technical effects that the layer of Sn or Bi film is evaporated on the surface of the steel, then the evaporated steel is annealed, the active elements Sn or Bi can be enriched at the grain boundary, and an oxygen channel is blocked; and the elemental Sn or Biis evaporated on the surface of the steel, the steel is not heated in the evaporation process, and the wettability of the galvanizing zinc and the steel is further improved on the basis of a traditional modification of the galvanizing zinc components. The method has the advantages that tedious operation does not need to be carried out, the cost is low, and the zinc plating quality is improved.

Description

technical field [0001] The invention belongs to the technical field of surface coating preparation, and in particular relates to a method for preparing a steel surface coating. Specifically, a layer of Sn or Bi film is vapor-deposited on the surface of TWIP steel, and the active element Sn or Bi is enriched at the grain boundary to hinder oxygen channels. Reduce oxides, improve the wettability of zinc liquid and steel and the mechanical properties of the coating. Background technique [0002] TWIP steel is widely used in automobile body and other fields due to its high strength, good mechanical properties and excellent formability. In order to resist environmental corrosion and improve the corrosion resistance of steel, the surface of steel is galvanized. Due to the occurrence of selective oxidation in the annealing process of steel, it often leads to missing plating and other phenomena, which reduces the quality of galvanizing steel. In order to solve the above problems, e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C23C14/16C23C14/24C23C14/58C23C30/00
CPCC23C14/16C23C14/24C23C14/5853C23C30/00
Inventor 刘亚周志华苏旭平王建华涂浩吴长军彭浩平
Owner CHANGZHOU UNIV