Roller repairing layer and method for repairing roller by utilizing roller repairing layer

A technology for repairing layers and rolls, which is applied in coatings, metal material coating processes, fusion spraying, etc., can solve the problems of not being widely used, easy detachment of coatings, etc., and achieve excellent substrate bonding strength, equipment and processes Simple, thermal stress mismatch prevention effect

Inactive Publication Date: 2015-05-27
郴州市泰益表面涂层技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the process of realizing the present invention, the inventor found that thermal spraying technology has not been widely used in the field of roll repair and manufacture at home and abroad. Problems such as easy detachment of the coating during the process

Method used

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  • Roller repairing layer and method for repairing roller by utilizing roller repairing layer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In this embodiment, a repair layer is prepared on the surface of the substrate with the scrapped roll as the substrate. The repair layer is composed of NiAl coating, NiAl-Cr 2 o 3 Composite coating and Cr 2 o 3 Coating composition. In this example, the NiAl coating thickness is 100 μm, NiAl-Cr 2 o 3 Composite coating thickness is 800μm, Cr 2 o 3 The coating thickness is 200 μm.

[0045] The NiAl coating is prepared by thermal spraying of commercially available 15-45μm NiAl powder, Cr 2 o 3 The coating is made of commercially available 20~60μm Cr 2 o 3 Powder prepared by thermal spraying method, NiAl-Cr 2 o 3 Composite coating is the above NiAl and Cr 2 o 3 The powder is mixed according to the mass ratio of 15:85 and prepared by thermal spraying method.

[0046] The specific preparation method of the repair layer is as follows:

[0047] Before spraying, clean the substrate, remove oil and rust, and use 20-mesh alloy sand for surface blasting pretreatment ...

Embodiment 2

[0057] In this embodiment, a repair layer is prepared on the surface of the substrate with the scrapped roll as the substrate. The repair layer is composed of NiCrBSiFe coating, NiCrBSiFe-Cr coating from the substrate surface to the outside. 2 o 3 Composite coating and Cr 2 o 3 Coating composition. In this embodiment, the thickness of the NiCrBSiFe coating is 90 μm, and the NiCrBSiFe-Cr 2 o 3 Composite coating thickness is 850μm, Cr 2 o 3 The coating thickness is 200 μm.

[0058] The NiCrBSiFe coating is prepared by thermal spraying method of commercially available NiCrBSiFe powder of 15~45μm, Cr 2 o 3 The coating is made of commercially available 20~60μm Cr 2 o 3 Powder prepared by thermal spraying method, NiCrBSiFe-Cr 2 o 3 Composite coating is the above NiCrBSiFe and Cr 2 o 3 The powder is mixed according to the mass ratio of 20:80 and prepared by thermal spraying method.

[0059] The specific preparation method of the above repair layer is the same as the pr...

Embodiment 3

[0065] In this embodiment, a repair layer is prepared on the surface of the substrate with the scrapped roll as the substrate. The repair layer is composed of NiAl coating, NiAl-Cr 3 C 2 Composite coating and Cr 3 C 2 Coating composition. NiAl coating thickness is 110μm, NiAl-Cr 3 C 2 Composite coating thickness is 850μm, Cr 3 C 2 The coating thickness is 250 μm.

[0066] The NiAl coating is prepared by thermal spraying of commercially available 15-45μm NiAl powder, Cr 3 C 2 The coating is made of commercially available 15~45μm Cr 3 C 2 Powder prepared by thermal spraying method, NiAl-Cr 3 C 2 Composite coating is the above NiAl and Cr 3 C 2 The powder is mixed according to the mass ratio of 20:80 and prepared by thermal spraying method.

[0067] The specific preparation method of the above-mentioned repair layer is the same as the preparation method in Example 1, the difference is that the powders are respectively NiAl and Cr 3 C 2 powder to obtain a repair l...

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Abstract

The invention discloses a roller repairing layer. The roller repairing layer is prepared by the following steps: thermally spraying a metal layer, a metal-ceramic composite layer and a ceramic layer on the surface of a roller matrix sequentially, wherein the metal layer is formed by thermally spraying a metal material on the surface of the matrix, and the metal material is any one of NiCr, NiCrBSi, NiAl, NiCrAl, 316L, NiCrBSiFe and NiCrBSiMoFe; the metal-ceramic composite layer is formed by thermally spraying a mixture of a metal material and a ceramic material on the surface of the metal layer, and the mixture is formed by mixing the used metal material and the ceramic material; the ceramic layer is formed by thermally spraying the ceramic material on the surface of the metal-ceramic composite layer, and the ceramic material is any one of Cr3C2, WC, Cr2O3, Al2O3, ZeO2 and TiO2. The invention also discloses a method for repairing a roller by utilizing the roller repairing layer.

Description

Technical field [0001] The present invention involves a type of roll surface treatment technology, especially involving a roll repair layer, and a method that uses the roller repair layer to repair the roller. Background technique [0002] my country is a large country for steel production and consumption, of which rolling materials account for about 85%-90%.Rolls are a tool for plastic deformation of (rolling) metal. It is an important part of the steel rolling machine rolling mill. Usually, the pressure generated by a pair or a group of rolls is used to roll the steel.It mainly bear the effects of dynamic static loads, wear and temperature changes during rolling.Roll is an indispensable accessory for rolling machines, and it is also an important factor affecting the cost and efficiency of the production of steel rolling.The quality of the roll directly affects the consumption and production cost of the roll.As the roll is put into use, the wear is inevitable. The wear changed t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/14C23C4/08C23C4/06C23C4/10C23C4/073C23C4/129C23C4/134
CPCC23C4/14C23C4/06C23C4/08C23C4/10
Inventor 袁建辉单张飞
Owner 郴州市泰益表面涂层技术有限公司
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