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Surface-treated metal sheets excellent in press dragging resistance and coil deformation resistance and process for producing the same

A surface treatment and deformability technology, applied in the direction of metal material coating process, coating, etc., can solve the problems of broken coil and easy sliding of steel plate surface.

Inactive Publication Date: 2006-09-27
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, by Japanese Unexamined Patent Publication (Kokai) No. 3-39485 (JP-A-3-39485), Japanese Unexamined Patent Publication (Kokai) No. 3-28380 (JP-A-3-28380) The surface of the steel plate produced by the technology disclosed in Japanese Unexamined Patent Publication (Open) No. 6-173037 (JP-A-6-173037) is easy to slide, so it is accompanied by the winding relaxation or load during the slice bundling process. Problems with folding causing rolls to shatter

Method used

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  • Surface-treated metal sheets excellent in press dragging resistance and coil deformation resistance and process for producing the same
  • Surface-treated metal sheets excellent in press dragging resistance and coil deformation resistance and process for producing the same
  • Surface-treated metal sheets excellent in press dragging resistance and coil deformation resistance and process for producing the same

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Embodiment

[0127] The present invention is explained in more detail below by examples and comparative examples, but it should be understood that the present invention is by no means limited by these examples.

[0128] First, an embodiment according to the first aspect of the present invention is explained.

[0129] (1) Reagent type

[0130] The list of reagents used is shown in Table 1. All polyolefin wax dispersions except D1 and D8 have 950-1000kg / m 2 Density (as specified in JIS K 6760), hardness (needle punch hardness) of 0.2 mm or less (as specified in JIS K 2207), crystallinity of 80% or more (measured by X-ray diffraction) and 110 -150°C melting point.

[0131] Reagent

[0132] (2) Type of metal plate

[0133] The metal plates used are shown in Table 2.

[0134] abbreviation

[0135] (3) Chromate treatment

[0136] by 10A / dm in a bath containing 50g / l chromic acid and 0.3g / l sulfuric acid 2 EG and ZN in Table 2 were subjected to electrolytic chromate tre...

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Abstract

Surface-treated metal sheets comprising 0.3-5.0 g / m<2> of a film formed from an aqueous organic / inorganic compound paint containing (1) a polyolefin wax dispersion with a molecular weight of 6000-15,000 or (2) a polyolefin wax dispersion with a molecular weight of 6000-15,000 (A) and a polyolefin wax dispersion (B) with a molecular weight of 1000-5000, with 5-35 wt% of colloidal silica in terms of solid content. Also, surface-treated metal sheets having, as a first layer, an aqueous organic / inorganic compound film containing a polyolefin wax dispersion with a molecular weight of 6000-15,000, at a dry weight of 0.05-0.3 g / m<2>, and as a second layer, an aqueous organic / inorganic compound film containing 5-35 wt% of colloidal silica in terms of solid content, at a dry weight of 0.5-5.0 g / m<2>. There are also provided an aqueous organic / inorganic compound paint and a manufacturing process, which allow manufacture of such surface-treated metal sheets.

Description

technical field [0001] The present invention relates to a surface-treated metal sheet suitable for automobiles, home appliances, building materials, etc., a manufacturing method thereof, and a water-based organic / inorganic composite coating that can be used to obtain the surface-treated metal sheet, which not only exhibits excellent Excellent performance such as corrosion resistance, adhesion and weldability, and exhibits excellent resistance to crushing scratches and curling deformation. [0002] The present invention also relates to a surface-treated metal sheet suitable for use in automobiles, home appliances, building materials, etc., a manufacturing method thereof, and a water-based organic / inorganic composite paint that can be used to obtain the surface-treated metal sheet, which not only exhibits Excellent properties such as corrosion resistance, adhesion and weldability, and exhibits excellent resistance to crush galling and continuous sliding wear. [0003] The prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C26/00C23C30/00
CPCC23C26/00C23C30/00
Inventor 吉田健吾森下敦司宫内优二郎高桥彰
Owner NIPPON STEEL CORP
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