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Spraying coating for aluminum-plated silicon wire sink roller and preparation method thereof

A sunken roller and coating technology, which is applied in the direction of coating, metal material coating process, melt spraying, etc., can solve the problems of surface performance and service life reduction of aluminum-silicon wire sunken rollers, and achieve good anti-sticking aluminum slag performance , High powder utilization rate, cost-saving effect

Inactive Publication Date: 2018-12-07
ANHUI MA STEEL SURFACE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The sinking roll of the continuous hot-dip galvanizing production line uses supersonic spraying WC-12Co material to enhance the wear resistance and corrosion resistance, but because the working temperature of the sinking roll of the continuous hot-dip galvanizing line is higher than that of the hot-dip galvanizing line, The use of supersonic spraying of WC-12Co can no longer meet the needs of the conditions. At present, there is no suitable spraying powder in China, so the sinking rollers of the aluminum-silicon wire have no spray coating, which makes the surface performance and service life of the final aluminum-silicon wire sinking rollers greatly reduced. reduce

Method used

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  • Spraying coating for aluminum-plated silicon wire sink roller and preparation method thereof
  • Spraying coating for aluminum-plated silicon wire sink roller and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment includes the following steps:

[0027] 1. Pretreatment before spraying of sinking roller

[0028] (1) Derust and decontaminate the surface of the sinking roller until the surface of the roller is smooth;

[0029] (2) For the sandblasting treatment on the surface of the sunken roller after the above step (1) treatment, use a direct shot sandblasting machine, carry out sandblasting and roughening treatment on the surface of the sunken roller by the mechanical hand-held sandblasting gun in the sandblasting room, and use 20 ~60 mesh white corundum sand, the surface roughness of the roller reaches Ra3~8 after sandblasting.

[0030] 2. Supersonic spraying, turn on the equipment for spraying

[0031] (1) spray gun: optional spray gun;

[0032] (2) Spraying material: WC-WB-Co-Cr 60 / 30 / 5 / 5, the composition is C: 3.5~4.5%, B: 1~2%, Co: 4~6%, Cr: 4~6% , the rest is W; powder particle size range 10 ~ 45μm.

[0033] (3) Oxygen consumption: 800 standard liters / ...

Embodiment 2

[0044] This embodiment includes the following steps:

[0045] 1. Pretreatment before spraying of sinking roller

[0046] (1) Derust and decontaminate the surface of the sinking roller until the surface of the roller is smooth;

[0047] (2) For the sandblasting treatment on the surface of the sunken roller after the above step (1) treatment, use a direct shot sandblasting machine, carry out sandblasting and roughening treatment on the surface of the sunken roller by the mechanical hand-held sandblasting gun in the sandblasting room, and use 20 ~60 mesh white corundum sand, the surface roughness of the roller reaches Ra3~8 after sandblasting.

[0048] 2. Supersonic spraying, turn on the equipment for spraying

[0049] (1) spray gun: optional spray gun;

[0050] (2) Spraying material: WC-WB-Co-Cr 60 / 30 / 5 / 5, the composition is C: 3.5~4.5%, B: 1~2%, Co: 4~6%, Cr: 4~6% , the rest is W; powder particle size range 10 ~ 45μm.

[0051] (3) Oxygen consumption: 830 standard liters / ...

Embodiment 3

[0063] This embodiment includes the following steps:

[0064] 1. Pretreatment before spraying of sinking roller

[0065] (1) Derust and decontaminate the surface of the sinking roller until the surface of the roller is smooth;

[0066] (2) For the sandblasting treatment on the surface of the sunken roller after the above step (1) treatment, use a direct shot sandblasting machine, carry out sandblasting and roughening treatment on the surface of the sunken roller by the mechanical hand-held sandblasting gun in the sandblasting room, and use 20 ~60 mesh white corundum sand, the surface roughness of the roller reaches Ra3~8 after sandblasting.

[0067] 2. Supersonic spraying, turn on the equipment for spraying

[0068] (1) spray gun: optional spray gun;

[0069] (2) Spraying material: WC-WB-Co-Cr 60 / 30 / 5 / 5, the composition is C: 3.5~4.5%, B: 1~2%, Co: 4~6%, Cr: 4~6% , the rest is W; powder particle size range 10 ~ 45μm.

[0070] (3) Oxygen consumption: 860 standard liters / ...

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Abstract

The invention discloses a spraying coating for an aluminum-plated silicon wire sink roller and a preparation method thereof. The preparation method is mainly characterized in that a layer of coating with the relatively high hardness, the good heat resistance and the good high-temperature-wear resistance is formed on the surface of a sink roller with the base roller material being SUS316L through spraying by using a supersonic spraying method. The sprayed powder is WC-WB-Co-Cr 60 / 30 / 5 / 5, the composition comprises the following components of 3.5-4.5% of C, 1-2% of B, 4-6% of Co, 4-6% of Cr, andthe balance W. Compared with the prior art, the coating and the preparation method have the following advantages that the coating uses the B, so that the coating is good in aluminum slag sticking prevention performance, the coating uses the Cr, so that the coating is good in the wear resistance, the overall coating has good thermal shock resistance, the excellent aluminum liquid corrosion resistance and the excellent high temperature resistance, can resist to the temperature reaching 700 DEG C, and has relatively high powder utilization rate, then the cost can be well saved; and the coating can be well adapted to the working condition requirements of an aluminum-plated silicon production line, so that good protection is provided for the surface of a part, and the service life is prolonged.

Description

technical field [0001] The invention relates to a material surface treatment technology, in particular to a spray coating for an aluminized silicon line sinking roll and a preparation method thereof. Background technique [0002] The working temperature of the sinking roll on the continuous aluminum-silicon coating production line is 650 ° C ~ 700 ° C. The sinking roll is corroded by the highly active molten aluminum-silicon alloy liquid to produce pits and adhere to aluminum slag, which occurs under the tension of the strip steel. Scratches and micro-cracks will affect the quality of the strip, and the loss of the sinking roller is large, which needs to be replaced frequently, which increases the production cost and affects the production efficiency. At present, there are two kinds of substrate materials for the sinking roll of the domestic aluminum-silicon coating line, one is SUS316L, and the other is heat-resistant cast steel. The wear resistance and corrosion resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/02C23C4/06C23C4/14C23C4/18C23C4/123
CPCC23C4/02C23C4/06C23C4/123C23C4/14C23C4/18
Inventor 胡小红倪振航解明祥叶文虎郭亚东刘刚强增云
Owner ANHUI MA STEEL SURFACE TECH CO LTD
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