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Super-thick metal anticorrosive coat and preparation technology thereof

A technology of metal anti-corrosion and preparation technology, applied in the direction of metal layered products, layered products, chemical instruments and methods, etc., can solve problems such as difficult to prepare, thick coatings, etc., and achieve the effect of strengthening the mechanical bonding force

Active Publication Date: 2013-12-11
ZHEJIANG CTB WAVEFORM STEEL WEB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the shortcomings of the metal anti-corrosion coating in the prior art, such as being difficult to prepare a very thick coating due to the limitation of adhesion and the influence of the difference in the coefficient of linear expansion of the material itself, and provides a method for coating on the surface of a metal substrate. Set the metal substrate anchor layer, the metal substrate is embedded and anchored with the anti-corrosion metal layer through the metal substrate anchor layer, and the ultra-thick metal anti-corrosion coating with a coating thickness of more than 150 μm and its preparation process

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  • Super-thick metal anticorrosive coat and preparation technology thereof

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Embodiment 1

[0024] Ultra-thick metal anti-corrosion coatings, such as figure 1 As shown, it includes a metal substrate 2, a metal substrate anchor layer 1, and an anti-corrosion metal layer 3. The surface roughness of the metal substrate 2 is 300 μm, and the surface of the metal substrate 2 is provided with a metal substrate anchor layer. 1. The anchor hook layer 1 of the metal substrate includes a flat anchor hook 11, and the metal substrate 2 is embedded and anchored with the anti-corrosion metal layer 3 through the anchor hook layer 1 of the metal substrate. The metal base material 2 is connected to the anti-corrosion metal layer 3 through the metal base anchor hook layer 1 and the anti-corrosion metal layer 3. necessary conditions.

[0025] The flat-headed anchor hook 11 has a mushroom-shaped anchor pattern 12 and a hook-shaped anchor pattern 13. The cross-section of the mushroom-shaped anchor pattern 12 is a "T" shape, and the cross-section of the hook-shaped anchor pattern 13 is a ...

Embodiment 2

[0032] The difference between this embodiment and Embodiment 1 is that the surface roughness of the metal substrate 2 is 651 μm. The metal base material 2 is connected to the anti-corrosion metal layer 3 through the metal base anchor layer 1 and the anti-corrosion metal layer 3. The mechanical bonding force between the anti-corrosion metal layer 3 and the metal base material 2 is improved, and the thickness of the anti-corrosion metal layer 3 is increased. necessary conditions.

[0033] The preparation process of the ultra-thick metal anti-corrosion coating comprises the following steps: a. preparing anchor patterns with a roughness of 651 μm on the surface of the metal substrate 2; b. applying pressure to the anchor patterns of the metal substrate 2 to form the anchor hooks of the metal substrate Layer 1; c, preparing an anti-corrosion metal layer 3 with a thickness of 1110 μm. In step b, the anchor pattern of the metal substrate 2 is pressed by rolling. In step c, the anti...

Embodiment 3

[0035] The difference between this embodiment and Embodiment 1 is that the surface roughness of the metal substrate 2 is 731 μm. Prepare a roughness of 921 μm on the surface of the metal substrate 2, and form the anchor hook layer 1 of the metal substrate by applying pressure to the anchor pattern of the metal substrate 2, so that the original surface area of ​​the metal substrate 2 is the same as the prepared roughness and the anchor hook. The ratio of the expanded area after the layer reaches 1: (1.6-4). The thickness of the anti-corrosion metal layer 3 reaches 1310 μm.

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Abstract

The invention relates to metal surface anticorrosion and long-acting heavy duty anticorrosion, and discloses a super-thick metal anticorrosive coat and a preparation technology thereof. The super-thick metal anticorrosive coat comprises a metal substrate (2), a metal surface anchor hook layer (1) and an anticorrosive metal layer (3), the toughness of the surface of the metal substrate (2) is 150-1400mum, and the metal substrate (2) has an embedded anchoring connection with the anticorrosive metal layer (3) through the metal surface anchor hook layer (1). The preparation technology comprises the following steps: 1, preparing anchor grains having a roughness of 150-1400mum on the surface of the metal substrate (2); 2, pressuring the anchor grains on the metal substrate (2) to form the metal surface anchor hook layer (1); and 3, preparing the anticorrosive metal layer (3). The arrangement of the metal surface anchor hook layer in the invention obviously reinforces a mechanical binding force between the metal surface anchor hook layer and the anticorrosive metal layer, and provides a necessary condition for the preparation of thicker coats.

Description

technical field [0001] The invention relates to metal surface anticorrosion and long-acting heavy anticorrosion, in particular to an ultra-thick metal anticorrosion coating and a preparation process. Background technique [0002] Traditional metal anti-corrosion coatings, due to the limitation of adhesion and the influence of the difference in the linear expansion coefficient of the material itself, except for the arc thermal spraying with large porosity and relatively low coating quality, very thick coatings cannot be prepared . For example, it is difficult to prepare hot-dip galvanized zinc layer with a thickness of more than 150 μm. Under the conditions of traditional technology, excessive thickness will cause defects such as delamination, cracking, and warping, which will affect the anti-corrosion effect. Regardless of the mechanism of isolated anti-corrosion or self-consumption reaction anti-corrosion, especially the self-consumption reaction anti-corrosion, the thickn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B3/26
Inventor 孙天明曾洋
Owner ZHEJIANG CTB WAVEFORM STEEL WEB
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