Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for producing electroplated steel sheet and production device therefor

A manufacturing method, steel plate technology, applied in the electrolysis process, electrolysis components, cells, etc., can solve the problems of unevenness, increased dissolution, uneven appearance, etc., and achieve the effect of beautiful surface appearance and uniform plating thickness

Active Publication Date: 2019-02-05
JFE STEEL CORP
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] However, in the methods described in Patent Documents 1 to 3, even if the amount of plating in the plating tank can be made uniform, if the amount of plating solution remaining on the surface of the steel sheet in the non-plating range between the tanks is not uniform , the plating film is dissolved by the remaining plating solution, and the plating thickness becomes uneven. As a result, the final plating thickness also becomes uneven.
At the same time, the crystal orientation of the plating film also becomes non-uniform, which causes non-uniform appearance (non-uniform whiteness)
[0018] In addition, as in Patent Document 4, if the pH of the plating solution is lowered in order to further increase the current density, the amount of dissolution of the plating film due to the remaining plating solution increases in the non-plating range between cells, Unevenness in thickness and appearance of the final plating becomes more noticeable

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 producing electroplated steel sheet and production device therefor
  • Method for producing electroplated steel sheet and production device therefor
  • Method for producing electroplated steel sheet and production device therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Examples of the present invention will be described below. The technical scope of the present invention is not limited to the following examples.

[0088] will use the Figure 1~3 The example of the electroplating tank of the structure shown was electroplated as the example of this invention, and the electroplating steel plate was manufactured. The steel strip 1 is a cold-rolled steel strip with a thickness of 0.5 mm×a width of 1000 mm, and is run at a line speed of 1.83 to 5.0 m / s. The anode electrode 3 is made of titanium, has an iridium oxide film on its current-carrying surface, and has a width substantially covering the steel strip 1 . The plating solution 4 was used by keeping the temperature of 60° C. and using a solution having a different pH and having a zinc sulfate concentration of 400 g / L. For the amount of plating deposition, the lower limit of one side is set to 20g / m 2 conditions of. For the plating thickness, calculate the average value of 10 measur...

Embodiment 2

[0095] will use the Figure 4~6 The example of the electroplating tank of the structure shown was electroplated as the example of this invention, and the electroplating steel plate was manufactured. The steel strip 1 is a cold-rolled steel strip with a thickness of 0.5 mm×a width of 1000 mm, and is run at a line speed of 2.07 to 5.0 m / s. The anode electrode 3 is made of titanium, has an iridium oxide film on its current-carrying surface, and has a width substantially covering the steel strip 1 . The plating solution 4 was used by keeping the temperature of 60° C. and using a solution having a different pH and having a zinc sulfate concentration of 400 g / L. For the amount of plating deposition, the lower limit of one side is set to 20g / m 2 conditions of. As the liquid sprayed from the spray nozzle 9, sulfuric acid whose pH was properly adjusted was used.

[0096] For the plating thickness, calculate the average value of 10 measurements at three points in the width direction...

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

PropertyMeasurementUnit
current densityaaaaaaaaaa
current densityaaaaaaaaaa
current densityaaaaaaaaaa
Login to View More

Abstract

The present invention provides a method for producing an electroplated steel sheet and a production device therefor. The purpose of the present invention is to equalize the deposited amount of platingliquid remaining on a steel sheet between electroplating cells, thereby equalizing the thickness of final plating and achieving a surface appearance of fair quality. This method is for producing an electroplated steel sheet by continuously electroplating a steel sheet, and is characterized by providing, on a steel sheet-exit side of an electroplating cell, a slit gas nozzle, in the width direction of the steel sheet, having a spray port having a width longer than the width of the steel sheet, and by spraying a gas toward the steel sheet from the slit gas nozzle.

Description

technical field [0001] The present invention relates to a method of manufacturing a plated steel sheet, a method of manufacturing a plated steel sheet having a uniform plating thickness and a beautiful surface appearance, and a manufacturing device thereof. Background technique [0002] In the manufacture of plated steel sheets, a horizontal type, a vertical flow cell method, and a radial cell method are known as common methods for plating steel sheets. [0003] Such as Figure 7 As shown, the cell structure of the horizontal flow cell method is a structure in which current-carrying rollers 2 are provided on the entry side and output side of the strip steel (steel plate) 1, and anode electrodes 3 are provided on the surface and back side of the strip steel 1. The steel strip 1 is advanced in the horizontal direction (direction of the arrow), and the plating solution 4 is supplied to the gap between the steel strip 1 and the anode electrode 3. Electricity is applied to perfo...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C25D7/06C25D21/00
CPCC25D7/0628C25D7/0635C25D7/0621C25D7/0692C25D5/627C25D7/0685C25D5/003C25D7/0657
Inventor 武田玄太郎日野善道吉本宗司高桥秀行
Owner JFE STEEL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com