Method for preparing printer anilox roller based on thermal spraying technology

A technology for thermal spraying and printing presses, applied in printing presses, general parts of printing machinery, printing and other directions to achieve the effects of high production efficiency, high hardness and good wear resistance

Active Publication Date: 2016-08-24
苏州朋众新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the sprayed layer composed of thermal spraying is used, the composite material roller still does not solve the problem of how to form tiny concave holes or bumps on the surface

Method used

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  • Method for preparing printer anilox roller based on thermal spraying technology
  • Method for preparing printer anilox roller based on thermal spraying technology
  • Method for preparing printer anilox roller based on thermal spraying technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In this embodiment, the anilox roller coating is composed of NiCrBSi coating and Cr 2 o 3 Coating composition, the NiCrBSi coating thickness is 90μm, Cr 2 o 3 The coating thickness was 350 μm. The NiCrBSi coating is prepared by thermal spraying of commercially available 15-45μm NiCrBSi powder, Cr 2 o 3 The coating is made of commercially available 10-40μm Cr 2 o 3 The powder is prepared by thermal spraying method, and the specific preparation method of the anilox roller is as follows:

[0044] 1. Before spraying, clean the substrate, remove oil and rust, and use 20-mesh alloy sand for surface blasting pretreatment to make the roughness meet the spraying requirements;

[0045] 2. First, spray the NiCrBSi coating, adopt the supersonic flame spraying method, and control the spraying parameters of the supersonic flame spraying gun as: supporting gas O 2 , The pressure of gas propane and compressed air are 10bar, 6bar, 7bar respectively, the flow rate is 240slpm, 70s...

Embodiment 2

[0051] In this embodiment, the anilox roller coating is sequentially composed of NiAl coating and Cr coating from the surface of the substrate. 2 o 3 Coating composition, the NiAl coating thickness is 100μm, Cr 2 o 3 The coating thickness was 380 μm. The NiAl coating is prepared from commercially available NiAl powder of 15-45 μm by thermal spraying method, Cr 2 o 3 The coating is made of commercially available 10-40μm Cr 2 o 3 The powder is prepared by thermal spraying method.

[0052] The specific preparation method of the above-mentioned anilox roller coating is the same as the preparation method in Example 1, the difference is that the powders are respectively NiAl and Cr 2 o 3 Powder, to obtain anilox roller surface coating.

[0053] Carry out following performance test to the anilox roller coating that above-mentioned preparation obtains:

[0054] 1. Microhardness of coating: Cr is measured by coating microhardness test method 2 o 3 The average hardness of th...

Embodiment 3

[0057] In this embodiment, the anilox roller coating is sequentially composed of NiCrBSi coating and Al 2 o 3 Coating composition, the NiCrBSi coating thickness is 75μm, Al 2 o 3 The coating thickness is 300 μm. The NiCrBSi coating is prepared by thermal spraying of commercially available 15-45 μm NiCrBSi powder, Al 2 o 3 The coating is made of commercially available 10-40μm Al 2 o 3 The powder is prepared by thermal spraying method.

[0058] The specific preparation method of the above-mentioned anilox roller coating is the same as the preparation method in Example 1, the difference is that the powders are respectively NiCrBSi and Al 2 o 3 Powder, to obtain anilox roller surface coating.

[0059] Carry out following performance test to the anilox roller coating that above-mentioned preparation obtains:

[0060] 1. Coating microhardness: measured by the coating microhardness test method 2 o 3 The average hardness of the coating was 1175.4HV (73.7HRC).

[0061] 2. ...

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Abstract

The invention relates to a method for preparing a printer anilox roller based on the thermal spraying technology. A hollow thick-wall roller or a solid roller serves as a base body, and the base body is cleaned and subjected to oil and dust removal and surface roughening. A metal coating is prepared on the surface of the base body through a thermal spraying method. A ceramic coating is prepared on the surface of the metal coating through the thermal spraying method. A layer of cylindrical screen is tightly fixed to the surface of the ceramic coating. Ceramic powder continues to be sprayed on the surface shielded by the screen through the thermal spraying method, the screen is taken down after five to fifteen times of scanning with a spraying gun, and a plurality of protrusions arranged regularly are formed on the surface of the coating, so that the printer anilox roller is manufactured. The base body of the anilox roller treated through the method is small in deformation and shallow in heat influence area. The selection range of materials is wide, the hardness of the surface of the roller is high(>70 HRC), and the service life of the anilox roller can be effectively prolonged. Meanwhile, the method is simple in process, not only is suitable for preparing the novel anilox roller, but also can be used for repairing a waste anilox roller and plays a role in energy saving and consumption reduction.

Description

technical field [0001] The invention relates to the technical field of printing machine anilox roll surface treatment, in particular to a printing machine anilox roll preparation method based on thermal spraying technology. Background technique [0002] Flexographic printing has become the most vital printing method in packaging printing. For many years, the anilox roller has been called the "heart" of the flexographic printing process. In flexographic printing, the anilox roller controls the ink transfer of the printing machine. It not only controls the ink storage volume, but also balances the transmission volume. Ultimately control the grade and consistency of printing quality. [0003] The traditional anilox roll preparation method is as follows: [0004] Rolling method: The rolling method is similar to ordinary knurling. The surface of the hob body is cut with positive and negative spiral lines to form raised dots corresponding to the required anilox roller mesh. On ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/14C23C4/08C23C4/10B41F31/10
Inventor 袁建辉于治水李东秦优琼马春伟任江伟
Owner 苏州朋众新材料科技有限公司
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