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

Surface-treated steel plate, fuel pipe, cell can

A technology for surface treatment of steel plates and battery shells, which is applied to battery pack parts, battery boxes/coats, battery box/cover materials, etc., and can solve problems such as lack of corrosion resistance, pinhole pitting, and unsatisfactory environmental safety, etc. question

Active Publication Date: 2014-03-19
TOYO KOHAN CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the Sn-Pb alloy has no corrosion resistance to water, and the potential of the Sn-Pb alloy is higher than that of Fe, the following problems occur: pinholes (Japanese: ピンホール) are generated during hot-dip plating, Under the action of corrosive substances such as moisture inevitably contained in gasoline fuel, pitting corrosion occurs due to the pinholes
[0006] However, as a result of studies by the present inventors, it has been found that the effect of suppressing pitting corrosion of the plated steel sheet disclosed in Patent Document 1 is not necessarily sufficient.
In addition, in the above-mentioned Patent Document 1, since fluorine compound particles are used, it is not preferable from the viewpoint of environmental safety.

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
  • Surface-treated steel plate, fuel pipe, cell can
  • Surface-treated steel plate, fuel pipe, cell can

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] As a base, a steel sheet obtained by annealing a cold-rolled sheet (0.25 mm in thickness) of low-carbon aluminum-killed steel having the chemical composition shown below was prepared.

[0058] C: 0.045% by weight, Mn: 0.23% by weight, Si: 0.02% by weight, P: 0.012% by weight, S: 0.009% by weight, Al: 0.063% by weight, N: 0.0036% by weight, remainder: Fe and unavoidable Impurities

[0059] Then, the prepared steel sheet was subjected to alkaline electrolytic degreasing and acid pickling by immersion in sulfuric acid, and then nickel plating was performed under the following conditions to form a nickel plating layer with a thickness of 0.5 μm.

[0060] Bath composition: nickel sulfate 250g / L, nickel chloride 45g / L, boric acid 30g / L

[0061] pH: 3~4.8

[0062] Bath temperature: 60°C

[0063] Current density: 10A / dm 2

[0064] Next, heat-treat the steel plate with the nickel coating for two hours at a temperature of 650°C and a non-oxidizing atmosphere (vacuum annealin...

Embodiment 2

[0066] A surface-treated steel sheet was produced in the same manner as in Example 1 except that the heat treatment time was changed to 4 hours and evaluated in the same manner. The results are shown in Table 1.

Embodiment 3

[0068] A surface-treated steel sheet was produced in the same manner as in Example 2 except that the thickness of the nickel plating layer was 1 μm, and was evaluated in the same manner. The results are shown in Table 1.

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Current densityaaaaaaaaaa
Login to View More

Abstract

Provided is a surface-treated steel plate obtained by forming an iron-nickel alloy layer on the topmost surface, the surface-treated steel plate being characterized in that the Fe / Ni value obtained by Auger electron spectroscopy on the surface of the iron / nickel alloy layer is in the range of 0.3-2.0. In accordance with the present invention, there is provided a surface-treated steel plate having excellent corrosion resistance and in which the occurrence of pitting is effectively reduced when the surface-treated steel plate is exposed to various fuels such as automotive fuel oil.

Description

technical field [0001] The invention relates to a surface-treated steel plate, and a fuel pipe and a battery case made by using the surface-treated steel plate. Background technique [0002] Conventionally, as fuel pipe materials for automobiles and the like, Sn—Pb alloy-plated steel sheets, nickel-plated and Sn—Pb alloy-plated multilayer plated steel sheets have been mainly used. [0003] However, since the Sn-Pb alloy has no corrosion resistance to water, and the potential of the Sn-Pb alloy is higher than that of Fe, the following problems occur: pinholes (Japanese: ピンホール) are generated during hot-dip plating, Pitting corrosion occurs due to the pinholes under the action of corrosive substances such as water inevitably contained in gasoline fuel. [0004] On the other hand, for example, Patent Document 1 discloses a plated steel sheet obtained by electroplating on the surface of the steel sheet to form a composite coating in which fluorine compound particles are disperse...

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): C23C10/28B60K15/04C25D5/50F16L9/02F16L58/08H01M2/02H01M50/119H01M50/124H01M50/145
CPCY02E60/12F16L58/08C23C30/00C23C26/00C23C10/30H01M2/0292C25D5/50H01M2/0262C25D3/12F16L9/165F16L9/02H01M50/124H01M50/1245H01M50/145H01M50/119Y02E60/10
Inventor 友森龙夫吉冈兴
Owner TOYO KOHAN CO LTD