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Colored stainless steel sheet, colored stainless steel coil, and their manufacturing method

A stainless steel plate, stainless steel technology, applied in chemical instruments and methods, metal rolling, liquid chemical plating, etc., can solve problems such as low productivity

Active Publication Date: 2021-01-05
ABEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is also a problem of low productivity

Method used

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  • Colored stainless steel sheet, colored stainless steel coil, and their manufacturing method
  • Colored stainless steel sheet, colored stainless steel coil, and their manufacturing method
  • Colored stainless steel sheet, colored stainless steel coil, and their manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0092] Using steel plates of SUS304, SUS316, and SUS443J1, the chemical coloring treatment was performed under the conditions shown in Table 1A. In addition, the electrolytic coloring treatment was performed under the conditions shown in Table 1B and Table 1C. In addition, regarding the thickness of the colored film layer, the colored film thickness was adjusted by changing the coloring treatment time. The thickness of the colored film layer was measured by sputtering with a high-frequency glow discharge luminescence surface analyzer (GD-Profiler 2 manufactured by Horiba, Ltd.). For the hardness measurement, five-point average values ​​of Vickers hardness were measured on the surface of the steel plate using a hardness measuring device (FM-ARS900 manufactured by Future-Tech Co., Ltd.), and the measurement load was set at 50 g. In addition, the surface roughness was measured using a surface roughness measuring device (Handy Surf E-35A manufactured by Tokyo Seiki Co., Ltd.) to ...

experiment example 1

[0100] Coloring treatment was carried out on the 200 mm wide x 300 mm long steel plates of 0.3 mm thick SUS304 BA material and 1 / 2H material under the conditions shown in Table 1A, Table 1B, and Table 1C. Then, using a four-roll rolling small-scale calender in a laboratory, cold rolling was reversibly performed in multiple passes at room temperature so that the steel sheets each had a thickness of 0.2 mm. In addition, on the other hand, cold rolling was carried out under laboratory conditions until the thickness became 0.2 mm using 0.3 mm thick steel plates of BA material and 1 / 2H material of SUS304. Coloring was then carried out under the conditions in Table 1.

[0101] As a test evaluation method for wear resistance, a cylinder rapid deep drawing test was carried out. In this case, experiments were performed by changing the diameter of the punch to 40 mm, the traveling speed of the punch to 60 mm / min, the blank holder force to 12 kN, and changing the diameter of the blank t...

experiment example 2

[0108] Using SUS316 and SUS443J1 steel sheets of BA material with a thickness of 0.3 mm, electrolytic coloring was performed under the conditions in Table 1, and the thickness of the colored film layer was changed. Then, multiple passes of cold rolling were performed under laboratory conditions so that the steel sheet became 0.2 mm in thickness. In the final pass of cold rolling, the arithmetic mean roughness Ra of the surface of the colored film layer of the cold-rolled steel sheet of colored stainless steel is changed by using a roll whose surface is sandblasted or electroeroded to change the surface roughness to standard 8. . Press formability was evaluated using these steel sheets. As a press formability test, a cylinder rapid deep drawing test was performed to obtain the ultimate deep drawing ratio. In this case, use low-viscosity stamping oil (viscosity 25 centistokes), set the diameter of the punch to 40mm, set the travel speed of the punch to 60mm / min, and set the bl...

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Abstract

The present invention provides a colored stainless steel plate, a colored stainless steel coil, and a method for producing the same, which are excellent in wear resistance and moldability in press forming and have high molded product strength. A colored film layer (11) is formed on the surface of the stainless steel plate (10) by a chemical coloring method or an electrolytic coloring method, and then the colored stainless steel plate (1) having the colored film layer is cold-rolled to form the colored film layer (11) The thickness is adjusted to be not less than 0.05 μm and not more than 1.0 μm, and the overall plate thickness is adjusted to be not more than 0.5 mm. By cold rolling, the Vickers hardness Hv is changed to 250 or more and 550 or less to form a deformed band (5). In addition, the surface roughness is adjusted so that the arithmetic mean roughness Ra is 0.05 μm or more and 5.0 μm or less. Thereby, a colored stainless steel plate (1) and a steel coil that can secure the strength and rigidity of a thin colored stainless steel, are less likely to wear, and have excellent press formability are obtained.

Description

technical field [0001] The present invention relates to colored stainless steel plates, colored stainless steel coils, and their manufacturing methods produced by chemical coloring or electrolytic coloring (both batch processes), or roll coloring (continuous coloring). In particular, it relates to a stainless steel cold-rolled (cold-rolled) steel sheet, a cold-rolled steel coil, and a method for producing the same, which are excellent in wear resistance and moldability during press forming and have high molded product strength. Background technique [0002] First, in this specification, a steel strip refers to a long plate-shaped steel body that is longer in the longitudinal direction than in the width direction. In addition, the steel plate refers to a cut plate cut to a desired length from a steel strip. In addition, a steel coil refers to a steel coil obtained by helically winding a steel strip. [0003] like Figure 10 As shown, stainless steel (colored stainless steel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/22B21B3/02C23C22/24C25D11/34C25D11/38
CPCC23C22/24C25D11/34C25D11/38C21D7/02C21D7/04C25D11/00C25D9/06C25D9/10B21B3/02B21B1/28B21B1/22C23C22/82B32B15/04B32B15/18C23C30/00C23C18/22C23C18/1689C23C18/54C23C18/16B32B15/043C25D11/18C23C30/005Y10T428/12611Y10T428/26Y10T428/12951Y10T428/1266Y10T428/12972Y10T428/12618Y10T428/12993Y10T428/12667Y10T428/12979Y10T428/265C23C22/28
Inventor 居相英机居相浩介青木善一
Owner ABEL