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Hot-dip plating silicon-containing Galfan alloy plating layer, and hot-dip plating method

A technology of alloy coating and hot-dip coating, which is applied in the field of Galfan alloy coating with added silicon element and its hot-dip coating, which can solve the problems of affecting the corrosion resistance of the coating, affecting the service life of the product, and cracking of the coating

Inactive Publication Date: 2015-08-05
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, Galfan coating products are usually bent and knotted in practical applications, and the cracking of the coating caused by this will seriously affect the corrosion resistance of the coating, thus affecting the service life of the product

Method used

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  • Hot-dip plating silicon-containing Galfan alloy plating layer, and hot-dip plating method
  • Hot-dip plating silicon-containing Galfan alloy plating layer, and hot-dip plating method
  • Hot-dip plating silicon-containing Galfan alloy plating layer, and hot-dip plating method

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Embodiment Construction

[0027] Specific embodiments of the present invention are:

[0028] first step:

[0029] The silicon-containing Galfan alloy is proportioned according to Zn-(4.5~5.5)%Al-(0.01%~0.1%)RE-(0.01%~0.1)Si, covered by the above mixed covering agent in the medium frequency induction galvanizing furnace Melting; when smelting alloys, Si is added to the molten alloy liquid in the form of Al-30Si master alloy. When adding, the furnace temperature is set to 700°C, and then fully stirred to fully dissolve the silicon element and avoid silicon element segregation; After the alloy is fully melted, wrap the rare earth with aluminum foil and add it to the bottom of the molten pool to reduce the burning loss and oxidation of the rare earth; after the rare earth is evenly melted, lower the medium frequency induction galvanizing furnace to 480°C~500°C.

[0030] Step two:

[0031] The iron and steel materials are pre-treated for plating. In order to ensure the accuracy of the experiment, the iron...

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Abstract

The present invention relates to the technical field of hot-dip plating, particularly to a Galfan alloy plating layer added with a silicon element, and a hot-dip plating method thereof. The hot-dip plating Galfan alloy plating layer contains 0.01-0.1% by mass of silicon. The hot-dip plating method comprises: smelting a silicon-containing hot-dip plating Galfan alloy plating layer, carrying out a pre-plating treatment on the iron and steel material, and carrying out hot-dip plating, and is characterized in that the hot-dip plating temperature is controlled at 480-500 DEG C, and the hot-dip plating time is 30-180 s. According to the present invention, the synergy effect between the silicon element and the rare earth element is utilized so as to effectively improve the cracking resistance of the plating layer and effectively improve the corrosion resistance of the Galfan alloy.

Description

technical field [0001] The invention relates to the technical field of hot-dip plating, in particular to a Galfan alloy coating layer added with silicon element and a hot-dip plating method thereof. Background technique [0002] The development of modern industry and science and technology has put forward higher and higher requirements on the surface properties of materials. Material surface treatment is an important means to improve the surface properties of materials; the most widely used steel materials in industry will Corrosion of different degrees, in order to ensure the corrosion resistance of steel products and prolong the service life, it is necessary to seek economical and effective steel protection methods. [0003] As an effective steel surface protection process, hot-dip galvanizing is widely used in the protection of steel components. Hot-dip galvanizing is to immerse the cleaned and activated steel in liquid zinc, through the reaction between iron and zinc. D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C22C18/04
Inventor 王建华李凯良苏旭平涂浩彭浩平
Owner CHANGZHOU UNIV