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A kind of vaporization coating method of low melting point metal

A low-melting-point metal and metal technology, applied in metal material coating process, sputtering plating, ion implantation plating, etc., can solve problems such as uneven coating, uneven cost, etc., achieve cost saving, and is suitable for large-scale promotion Effect

Inactive Publication Date: 2015-09-09
苏州潦河材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a gasification coating method for low-melting-point metals, which solves the current problems of uneven, uneven and high-cost coatings during electroplating of low-melting-point metals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Tin plating is performed on the surface of the steel strip.

[0019] (1) Put 100g of tin into the metal melting pool for melting, set the temperature of the metal melting pool to 800°C, tin is vaporized after boiling, and the whole gasification process is protected under the condition of argon.

[0020] (2) Pass the steel strip to be plated into the heating furnace connected with the metal melting pool, select the steel strip with a thickness of 8mm, and set the conveying roller in the heating furnace to transport the steel strip, and the conveying speed is 20m / min , the coated metal tin gas enters the heating furnace and attaches itself to the surface of the steel strip to be coated;

[0021] (3) After the electroplating is completed, the metal with the coating is passed into the cooling device for cooling, and the thickness of the tin coating is 1.5mm.

[0022] Add inert gas and reducing gas to the metal melting pool.

[0023] The reducing gas is hydrogen or helium....

Embodiment 2

[0025] Tin plating is performed on the surface of the steel strip.

[0026] (1) Put 100g of tin into the metal melting pool for melting, set the temperature of the metal melting pool to 850°C, the tin will be vaporized after boiling, and it will be protected under the condition of argon during the whole gasification process.

[0027] (2) Pass the steel strip to be plated into the heating furnace connected to the metal melting pool, select the steel strip with a thickness of 10mm, set the conveying roller in the heating furnace to transport the steel strip, and the conveying speed is 25m / min , the coated metal tin gas enters the heating furnace and attaches itself to the surface of the steel strip to be coated;

[0028] (3) After the electroplating is completed, the metal with the coating is passed into the cooling device for cooling, and the thickness of the tin coating is 1.8mm.

[0029] Add inert gas and reducing gas to the metal melting pool.

[0030] The reducing gas is ...

Embodiment 3

[0032] Tin plating is performed on the surface of the steel strip.

[0033] (1) Put 100g of tin into the metal melting pool for melting, set the temperature of the metal melting pool to 700°C, tin is vaporized after boiling, and the whole gasification process is protected under the condition of argon.

[0034] (2) Pass the steel strip to be plated into the heating furnace connected to the metal melting pool, select the steel strip with a thickness of 12mm, set the conveying roller in the heating furnace to transport the steel strip, and the conveying speed is 17m / min , the coated metal tin gas enters the heating furnace and attaches itself to the surface of the steel strip to be coated;

[0035] (3) After the electroplating is completed, the metal with the coating is passed into the cooling device for cooling, and the thickness of the tin coating is 1.9mm.

[0036] Add inert gas and reducing gas to the metal melting pool.

[0037] The reducing gas is hydrogen or helium.

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Abstract

The invention discloses a gasification coating method of low-melting-point metal. The gasification coating method comprises the following steps of: (1) putting coated low-melting-point metal in a metal melting tank for melting, and setting the temperature of the metal melting tank at 250-850 DEG C till the coated low-melting-point metal I is boiling and gasified; (2) feeding metal to be coated into a heating furnace communicated with the metal melting tank, wherein the coated metal gas enters the heating furnace filled with protective gas and is autonomously attached to the surface of the metal to coated; and (3) after coating is ended, feeding the coated metal into a cooling device filled with the protective gas for cooling. The gasification coating method combines the advantages of dip coating and vacuum plating; the coating is complete and uniform; the thickness of the coating can be adjusted; and compared with an electroplating technology, the gasification coating method has the advantages of saving lots of resources and being environment-friendly.

Description

technical field [0001] The invention relates to a gasification electroplating method for metals with a low melting point, belonging to the technical field of electroplating. Background technique [0002] When low-melting point metals are used as coating metals, the coating is required to be stable and uniform. According to this requirement, the electroplating methods of the prior art are mainly hot-dip and vacuum plating. When the hot-dip method is working, the coating metal is in a molten state, and the metal to be plated cannot reach the same temperature as the coating metal. It is impossible to make the steel strip reach the temperature of molten tin when it is tinned. Therefore, when the steel strip passes through the conveying roller and enters the reaction pool carrying the molten coating metal, there will be a phenomenon of molten metal spraying when it is cold, and the steel strip will It slowly enters the reaction pool at a certain speed, so after the electroplatin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/24C23C14/14
Inventor 谢振华
Owner 苏州潦河材料科技有限公司