Tin-plated steel plate and process for producing the tin-plated steel plate

A technology of tin-plated steel sheet and manufacturing method, which is applied in hot-dip plating process, coating of superimposed layers, phosphating, etc., can solve problems such as reduction of coating adhesion, failure to suppress deterioration of appearance, etc., and achieve low-cost chemical conversion Treatment, effect of suppressing deterioration of the appearance

Active Publication Date: 2011-06-08
JFE STEEL CORP
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the chemical conversion coatings described in Patent Documents 1 to 4, the deterioration of appearance or the reduction of paint adhesion due to oxidation of the tin-plated surface cannot be suppressed compared with conventional chromate coatings.

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
  • Tin-plated steel plate and process for producing the tin-plated steel plate
  • Tin-plated steel plate and process for producing the tin-plated steel plate
  • Tin-plated steel plate and process for producing the tin-plated steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] Using the following steel sheets as raw steel sheets, a commercially available tin plating bath was used to form a Sn layer according to the amount of Sn deposited on each surface shown in Table 3. After that, a reflow treatment was performed at a temperature above the melting point of Sn to form an Fe layer on the steel sheet A. - Sn-containing coating of Sn layer / Sn layer, and a Sn-containing coating of Fe-Ni layer / Fe-Ni-Sn layer / Sn layer is formed on steel plate B, wherein the above-mentioned original steel plate is steel plate A: plate thickness 0.2 mm low-carbon cold-rolled steel plate, or steel plate B: 100 mg / m per surface using a Watt bath 2 The amount of adhesion is to form a nickel coating on both surfaces of a low-carbon cold-rolled steel sheet with a thickness of 0.2 mm, and then, in 10 volume% H 2 +90vol%N 2 A steel plate that is annealed at 700°C in an atmosphere to diffuse and infiltrate the nickel coating.

[0039] Then, in order to remove the Sn oxide...

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
Adhesion amountaaaaaaaaaa
Adhesion amountaaaaaaaaaa
Login to view more

Abstract

Disclosed is a tin-plated steel plate characterized in that the tin-plated steel plate comprises a steel plate, an Sn-containing plating layer provided on at least one side of the steel plate at a coverage of 0.05 to 20 g/m2, in terms of Sn, per side of the steel plate, a first chemical converted film provided on the Sn-containing plating layer and containing P and Sn, the coverage of P being 0.3 to 10 mg/m2 per side, and a second chemically converted film provided on the first chemically converted film and containing P and Al, at a coverage of 1.2 to 10 mg/m2, per side, in terms of P and at coverage of 0.24 to 8.7 mg/m2, per side, in terms of Al. The tin-plated steel plate can realize the suppression of a deterioration in appearance and a lowering in coating material adhesion caused by oxidation of the surface of tin plating without using Cr and, at the same time, can realize chemical conversion treatment at low cost.

Description

technical field [0001] The present invention relates to a tin-plated steel sheet used for DI cans, food cans, beverage cans, etc., and more particularly to a tin-plated steel sheet having a chemical conversion treatment film not containing chromium (Cr) on the surface, and a method for producing the same. Background technique [0002] As surface-treated steel sheets for cans, tin-plated steel sheets conventionally called "tinplate" are widely used. Usually, in such a tin-plated steel sheet, a chromate coating is formed on the tin-plated surface by immersing the steel sheet in an aqueous solution containing a hexavalent chromium compound such as dichromic acid, or by chromate treatment such as electrolysis in the solution. . This is because by forming a chromate film, it prevents the oxidation of the tin-plated surface that is likely to occur during long-term storage, suppresses the deterioration (yellowing) of the appearance, and prevents the formation of tin (Sn) oxide fil...

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): C23C28/00C23C22/08C23C22/20C25D11/36
CPCC25D5/48C25D11/36C23C2/26C23C22/20C23C2/08C23C28/321C25D3/30C23C28/322C23C2/28C23C22/08C23C28/34C23C22/73C25D5/10C23C22/07C23C28/00
Inventor 铃木威中村纪彦岩佐浩树
Owner JFE STEEL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap