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A kind of preparation method of wear-resistant white iron

A white iron and high-chromium cast iron technology, applied in the field of metal welding, can solve the problems of weak welding of high-chromium cast iron and low-carbon steel plate, insufficient hardness of high-chromium cast iron, and falling off of white iron, so as to achieve smooth welding surface and improve wear resistance. The effect of sex, avoidance of waste

Active Publication Date: 2019-08-06
HEBEI HUABEI DIESEL ENGINE
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  • Application Information

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Problems solved by technology

There is no case of using this technology in China. In the process of using it abroad, the hardness of high-chromium cast iron is insufficient, and the wear resistance is poor. The welding between high-chromium cast iron and low-carbon steel plate is not firm, and the white iron falls off during work.

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  • A kind of preparation method of wear-resistant white iron

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Embodiment Construction

[0015] Below in conjunction with embodiment the present invention is described in further detail:

[0016] The invention relates to a preparation method of wear-resistant white iron. The high-chromium cast iron and the low-carbon steel plate are welded by a brazing method through brazing material, and the welding and high-chromium cast iron heat treatment processes are completed at the same time.

[0017] The present invention welds the matrix of two different materials, high chromium cast iron and low carbon steel. At the same time, the high chromium cast iron needs to be strengthened by heat treatment. Therefore, it is necessary to ensure the welding and heat treatment when selecting the brazing method, brazing material and brazing temperature. The two processes can be completed synchronously to achieve the effect of mutual promotion. Choose brazing, which has high strength and can connect parts under load; choose copper-based solder with a melting temperature of 960-1040°C ...

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Abstract

The invention discloses a preparation method of wear-resistant galvanized iron, and belongs to the field of metal welding. The preparation method comprises the step that high chromium cast iron and alow carbon steel plate are welded by conducting brazing on brazing filler metal. Through adoption of the preparation method, the two processes of welding of two shaped materials of the high chromium cast iron and low carbon steel and heat treatment strengthening of the high chromium cast iron can be completed at the same time, the wear resistance of the high chromium cast iron is improved, and firm welding between the high chromium cast iron and the low carbon steel is ensured.

Description

technical field [0001] The invention relates to the field of metal welding, in particular to a preparation method of wear-resistant white iron. Background technique [0002] Wear-resistant white iron products are made of high-chromium cast iron and low-carbon steel plates welded together at high temperature, and then welded by low-carbon steel plates to mine engineering machinery such as excavator buckets, crushers, and mixers. It is widely used in coal mines, iron mines, quarries, road infrastructure and other harsh construction environments. At present, there is no use case in China, and it is mainly exported to the United States, Canada, Australia, New Zealand, Brazil, South Africa, Italy, Sweden, Britain, the Netherlands, Chile and other countries. There is no domestic use case of this technology. In the process of using abroad, high chromium cast iron has insufficient hardness and poor wear resistance. The welding between high chromium cast iron and low carbon steel pl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 王冬雁冯涛颜书华李国洪王维民李世宇
Owner HEBEI HUABEI DIESEL ENGINE