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Method for preparing powder-cored welding wire and cladding layer used for cladding surface of hot working die

A technology of hot work die and cladding layer, applied in welding equipment, welding equipment, arc welding equipment, etc., can solve the problem of limited life extension effect, and achieve the effect of low cost and simple operation

Inactive Publication Date: 2009-12-16
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The thickness of the strengthening layer prepared by chemical heat treatment, vapor deposition, brush plating and other technologies is generally several microns to tens of microns, and the life extension effect is limited.

Method used

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  • Method for preparing powder-cored welding wire and cladding layer used for cladding surface of hot working die
  • Method for preparing powder-cored welding wire and cladding layer used for cladding surface of hot working die
  • Method for preparing powder-cored welding wire and cladding layer used for cladding surface of hot working die

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Experimental program
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Effect test

Embodiment Construction

[0024] 1. Preparation of powder cored wire.

[0025] (1) Take the powder material according to the following proportioning: graphite carbon powder (purity 99.5%, particle size-300 mesh): 8wt.%, nickel (purity 99.5%, particle size-100 mesh): 29%, chromium (purity 99% , particle size-100 mesh): 26wt.%, molybdenum (purity 99.5%, particle size-300 mesh): 2wt.%, aluminum (purity 99%, particle size-200 mesh): 3%, titanium (purity 99.5%, particle size- 100 mesh): margin. The above powder was placed in a drying oven, dried at 110°C for 3 hours, and then the powder was ball milled in a ball mill for 4 hours to obtain a uniform and fine mixed powder.

[0026] (2) Ni foil (99% in purity, 80 μm in thickness, 32 mm in width, and 350 mm in length) was selected as the skin material for wrapping the mixed powder. The mixed powder is wrapped in the nickel foil by using the wrapping mechanical device for preparing the powder cored wire, and the weight percentage of the mixed powder in the pow...

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Abstract

The invention discloses a method for preparing a powder-cored welding wire and a cladding layer used for cladding the surface of a hot working die, and belongs to the technical field of surface engineering. The preparation process comprises the following steps: preparing the powder-cored welding wire of a ceramic-metal composite material cladding layer, selecting the hot working die with the outline size achieving the design requirement, preparing the cladding layer, and grinding the die with the prepared cladding layer. The method has the advantages that the surface of the hot working die is prepared with the ceramic-metal composite material cladding layer of which effective thickness reaches 1 to 2 millimeters so as to effectively prolong the service life of the hot working die and improve the quality of a processed product; and the method has simple operation and low cost.

Description

technical field [0001] The invention belongs to the technical field of surface engineering, and in particular provides a method for preparing a powder-cored welding wire and a cladding layer for hot-working mold surface cladding. Background technique [0002] The mold industry occupies a very important position in my country's national economy. According to relevant statistics, 75% of the rough machining and 50% of the finishing of industrial product parts are completed by mold processing, and the precision and service life of the mold are directly related to the product. quality, performance and productivity. Therefore, people have higher and higher requirements on the quality of the mold, especially the service life of the mold is required to be as long as possible. [0003] Hot work molds play a pivotal role in the manufacture of electromechanical equipment. Since hot work molds need to withstand cyclic shocks, cold and heat fatigue, and wear during service, the existing ...

Claims

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Application Information

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IPC IPC(8): B23K9/04B23K35/40B23K35/22B23K35/16B23K9/095
Inventor 刘宗德李斌田娟赵丽萍
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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