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A precoated metal plate

A metal plate and pre-coating technology, applied in the direction of metal layered products, layered products, chemical instruments and methods, etc., can solve problems such as inability to cope with processing, toxic and strong fluorine gas, film cracks and peeling

Inactive Publication Date: 2013-04-03
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The heat resistance temperature of polyurethane resin and epoxy resin in Patent Document 1 is only about 200°C even if it is high, and the resin starts to decompose in a higher temperature environment, and the heat resistance and heat resistance gloss are poor
[0005] In addition, although the composite film of Patent Document 2 has good heat resistance, it is prone to cracks and peeling due to processing, so it may not be able to cope with complicated processing.
Moreover, when used at high temperature for a long time, the fluororesin decomposes and may produce highly toxic fluorine gas
[0006] The film mainly composed of silicone resin in Patent Document 3 has no problems with heat resistance and safety, but the processability of the film is poor, and the film cracks and the film peels off during complex processing such as bending and drawing.

Method used

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  • A precoated metal plate
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0029] First, use figure 1 The first embodiment of the precoated metal sheet of the present invention will be described.

[0030] Such as figure 1 As shown, the precoated metal sheet 1A of the first embodiment is a precoated metal sheet in which the heat-resistant film 3 is formed on the surface of the metal sheet 2 .

[0031] As the metal plate 2, for example, a carbon steel plate, a stainless steel plate, an aluminum plate, an aluminum alloy plate, a magnesium plate, a magnesium alloy plate, a copper plate, or a copper alloy plate are used. When strength is required, carbon steel plate and stainless steel plate are recommended. In applications that require strength and lightness, aluminum, aluminum alloy, magnesium, and magnesium alloy plates are recommended. Copper plates and copper alloy plates are recommended for applications requiring high electrical conductivity. There are no particular restrictions on heat treatment and plate thickness, and can be selected accordin...

no. 2 approach

[0048] Next, refer to figure 2 , the second embodiment of the precoated metal sheet of the present invention will be described.

[0049] Such as figure 2 As shown, the precoated metal sheet 1B of the second embodiment is a precoated metal sheet on which a heat-resistant film 3 is formed. The inorganic binder of the heat-resistant film 3 contains inorganic particle colloid in an amount of 50% by mass to 95% by mass. 5.

[0050] In addition, the precoated metal sheet 1B of the second embodiment differs from the first embodiment in that the inorganic binder contained in the heat-resistant film 3 contains the inorganic particle colloid 5 . Therefore, the same reference numerals are assigned to the common configurations in the first embodiment and the second embodiment, and overlapping descriptions are omitted, and the configurations that differ therebetween will be described below.

[0051] When the inorganic binder contains the inorganic particle colloid 5 in an amount of 50...

no. 3 approach

[0056] Next, refer to image 3 , the third embodiment of the precoated metal sheet of the present invention will be described.

[0057] Such as image 3 As shown, the precoated metal sheet 1C of the third embodiment is a precoated metal sheet in which the heat-resistant film 3 further including the coloring pigment 6 is formed on the surface of the metal sheet 2 .

[0058] In addition, 1 C of precoated metal sheets of 3rd Embodiment differ from 1st Embodiment and 2nd Embodiment in the point which contains the coloring pigment 6. As shown in FIG. Therefore, the same reference numerals are assigned to the common configurations of the first embodiment, the second embodiment, and the third embodiment, and overlapping descriptions are omitted, and the configurations that are different therebetween will be described below.

[0059] By making the heat-resistant film 3 contain the coloring pigment 6 , a desired color can be imparted to the heat-resistant film 3 . The coloring pigme...

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Abstract

The invention relates to a precoated metal plate equipped with a heat-resisting film formed on the surface of the metal plate. The precoated metal plate is characterized in that the heat-resisting film comprises water-dilutable resin and inorganic bond. The inorganic bond comprises silicate compound more than 5% by weight. The thickness of the heat-resisting film is more than 0.2 [mu]m but lower than 20 [mu] m.

Description

technical field [0001] The present invention relates to a precoated metal sheet provided with a heat-resistant film on the surface of the metal sheet. Background technique [0002] When the surface treatment of metal sheets used at high temperatures, such as exhaust system components of automobiles and heat-resistant structural components of home appliances, is carried out by a pre-coating method in which a resin film is formed on the surface of the metal sheet before forming, as this A kind of precoating material, for example has the Japanese patent publication No. 8-192102 (hereinafter referred to as the patent document 1), the Japanese patent publication No. 2000-319575 (hereinafter referred to as the patent document 2), the patent No. 4046322 communique (hereinafter referred to as the patent document 3). [0003] Exhaust system components and heat-resistant structural components of automobiles may be exposed to temperatures as high as 400°C or higher during use. In a h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/08B32B15/20B32B33/00
Inventor 田中智子服部伸郎
Owner KOBE STEEL LTD