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Hot-galvanizing sink roller and preparation method thereof

A sunken roll, hot-dip galvanizing technology, applied in hot-dip plating process, melt spraying, coating and other directions, can solve the problems of poor adhesion between coating and substrate, inevitable porosity, easy to fall off, etc., and achieve low production Cost, high surface hardness, effect of improving surface hardness

Inactive Publication Date: 2012-07-25
江苏泽金激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, the thermal spraying method also has its shortcomings. The biggest disadvantage is that the thermal sprayed coating inevitably has a certain porosity. The existence of these pores provides a diffusion channel for the diffusion of zinc, and the bonding force between the coating and the substrate poor, easy to fall off

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A hot-dip galvanized sinking roll has a substrate, and the surface of the substrate has a protective coating, the protective coating is prepared by an electric spark deposition process, and the material of the protective coating is ZrB 2 Ceramic composites doped with graphite, ZrB 2 The ceramic composite material doped with graphite includes 5wt% graphite and 95wt% ZrB 2 ; The thickness of the protective coating is 50 μm.

[0023] The preparation method of the protective coating of the above-mentioned hot-dip galvanized sinking roll has the following process steps:

[0024] 1) Surface pretreatment of stainless steel rollers: Grind the cut stainless steel sink rollers step by step with 400#, 600#, 1000# sandpaper, put the sample in acetone solution for ultrasonic assisted degreasing and cleaning for 3~5min, and then use Rinse with deionized water and dry for later use.

[0025] 2) EDM deposition: the anode, that is, the deposition electrode is ZrB 2 A ceramic composi...

Embodiment 2

[0027] A hot-dip galvanized sinking roll has a substrate, and the surface of the substrate has a protective coating, the protective coating is prepared by an electric spark deposition process, and the material of the protective coating is ZrB 2 Ceramic composites doped with graphite, ZrB 2 The ceramic composite material doped with graphite includes 10wt% graphite and 90wt% ZrB 2 ; The thickness of the protective coating is 40 μm.

[0028] The preparation method of the protective coating of the above-mentioned hot-dip galvanized sinking roll has the following process steps:

[0029] 1) Pretreatment of sinking rollers: Grind the cut stainless steel sinking rollers step by step with 400#, 600#, and 1000# sandpaper, put the sample in acetone solution for ultrasonic assisted degreasing and cleaning for 3~5min, and then use Rinse with deionized water and dry for later use.

[0030] 2) EDM deposition: the anode, that is, the deposition electrode is ZrB 2A ceramic composite materi...

Embodiment 3

[0032] A hot-dip galvanized sinking roll has a substrate, and the surface of the substrate has a protective coating, the protective coating is prepared by an electric spark deposition process, and the material of the protective coating is ZrB 2 Ceramic composites doped with graphite, ZrB 2 The ceramic composite material doped with graphite includes 15wt% graphite and 85wt% ZrB 2 ; The thickness of the protective coating is 30 μm.

[0033] The preparation method of the protective coating of the above-mentioned hot-dip galvanized sinking roll has the following process steps:

[0034] 1) Pretreatment of sinking rollers: Grind the cut stainless steel sinking rollers step by step with 400#, 600#, and 1000# sandpaper, put the sample in acetone solution for ultrasonic assisted degreasing and cleaning for 3~5min, and then use Rinse with deionized water and dry for later use.

[0035] 2) EDM deposition: the anode, that is, the deposition electrode is ZrB 2 A ceramic composite mater...

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Abstract

The invention relates to a hot-galvanizing sink roller and a preparation method thereof. The hot-galvanizing sink roller is provided with a base body, wherein the surface of the base body is provided with a protection coating; the protection coating is prepared by an electric spark depositing process; and the material of the protection coating is a ceramic composite material obtained by doping graphite into ZrB2. The preparation method of the protection coating of the hot-galvanizing sink roller comprises the following process steps of: 1) carrying out heat treatment on a stainless steel roller; and 2) depositing electric sparks. According to the hot-galvanizing sink roller and the preparation method thereof, disclosed by the invention, the surface hardness, the wear resistance performance, the fused zinc liquid corrosion resistance performance and the heat oxidization performance of the surface protection coating of the hot-galvanizing sink roller are improved by a lower production cost, and the protection coating is combined with an interface of the stainless steel base body in a metallurgy manner.

Description

technical field [0001] The invention relates to a hot-dip galvanized sinking roll and a preparation method thereof. Background technique [0002] Hot-dip galvanizing, also known as hot-dip galvanizing, is the most economical and effective way to prevent steel materials from corroding in the natural environment by immersing steel components in molten zinc solution to obtain a metal coating. Steel components treated by hot-dip galvanizing have excellent corrosion resistance in corrosive environments such as air, seawater, and soil. In recent years, with the rapid development of high-voltage power transmission, transportation, and communication, the requirements for the protection of steel parts are getting higher and higher, and the demand for hot-dip galvanizing is also increasing. [0003] Sinking rolls are key components of hot-dip galvanizing equipment. The traditional sinking roll is mainly made of iron and steel, but because iron will form porous and loose low melting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C23C4/12C23C4/10C23C26/02
Inventor 冯宗建
Owner 江苏泽金激光科技有限公司
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