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Edge cover paint and method for forming thick coating film on edge of steel material by using the paint

An edge and coating technology, applied in the field of coating, can solve the problem of not finding the formation of thick film coating film, and achieve the effect of inhibiting the formation of film, reducing the number of corrections, and realizing the process time

Inactive Publication Date: 2007-10-31
CHUGOKU MARINE PAINTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the inventions described in these patent documents are not aimed at the formation of thick-film coatings on the edges of steel materials, and there is no description showing that thick-film coatings can be formed on the edges of steel materials.

Method used

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  • Edge cover paint and method for forming thick coating film on edge of steel material by using the paint
  • Edge cover paint and method for forming thick coating film on edge of steel material by using the paint
  • Edge cover paint and method for forming thick coating film on edge of steel material by using the paint

Examples

Experimental program
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Effect test

Embodiment 1

[0072] In the paints of Examples 1 to 4, different types of resins such as solvent-based and solvent-free epoxy resins, chlorinated rubber, and acrylic resins are used, but they are all mixed with ferroferromagnetic powder, and the objects in the coating process are covered. The magnetic flux density on the coating surface is also the same (100±5mT). Examples 1 and 5-7 are all high solid content modified epoxy resin coatings, and the doping amount of ferroferromagnetic powder is different. The types of magnetic powders were different between Examples 1 and 8 to 9, and in Example 10, ferroferromagnetic powder of a different manufacturer from that of Example 1 was used. In Examples 11 and 12 and Reference Example 1, the high solid content modified epoxy resin paint (two-component type) of the present invention was used in the same manner as in Example 1, but the magnetic flux density of the object to be coated was different, especially in Reference Example 1. The coating method...

Embodiment 14

[0105] Embodiment 14: The edge of the object is ground once with a grinder (without burr treatment);

Embodiment 15

[0106] Embodiment 15: the edge of the object is ground 1 time with a grinder (through burrs);

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Abstract

This invention relates to a method for effectively forming thick coating film to improve the corrosion prevention of magnetic steel-materials edge, especially shrap edge generated by mechanical cutting. An edge cover paint which contains magnetic substance powder three to 40% of the weight in coating material solid content is used, when coating with the said paint or before paint solidifying (losing fluidity)after coating, the object to be coated such as steel is in the magnetic field, and thick film can be form in the edge using the magnetization characteristic difference of edge and adjacent plane.

Description

technical field [0001] This invention relates to the coating of steel materials etc. which have an edge. More specifically, the present invention relates to a coating material for forming a coating film having a sufficient film thickness in terms of anti-corrosion effect and the like on edges of steel materials and a thick-film coating film forming method using the coating material. Background technique [0002] In order to prevent rust, the surface of steel plates used in steel structures such as new ships is mostly coated with anti-corrosion paint. However, the edge of the steel plate, especially the sharp edge mechanically cut is sharp, and the paint is not easy to adhere to these coated parts, so rust is first generated from this part. Conventionally, in order to secure a film thickness sufficient for the anti-corrosion effect on the edge of such a steel plate, treatment (edge ​​treatment) with a grinder or the like before coating and correction (repair coating) after f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D167/00C09D123/00C09D115/02C09D133/00C09D163/00C09D175/04B05D7/14
CPCB05D3/20B05D7/14C08K3/11C08K2003/2275C09D5/23C09D7/61C09D7/65
Inventor 原田伸古本悟藤本直树
Owner CHUGOKU MARINE PAINTS
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