Wearable tubular welding rod made from tungsten carbide

A tubular electrode, tungsten carbide technology, applied in the field of wear-resistant surfacing materials, can solve the problems of poor wear resistance of bonding metal and easy to be worn, wear-resistant particles lose support, and wear-resistant performance is greatly different, etc., to achieve overall wear resistance. The effect of improving the property, lowering the melting point, and improving the weldability

Inactive Publication Date: 2005-01-12
SINOPEC OILFIELD EQUIP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter has a large difference in wear resistance between the bonding metal (nickel-based alloy) and the wear-resistant particles. Under actual working conditions, the bonding metal has poor wear resistance and is easily worn, resulting in the loss of wear-resistant particles. support and fall off

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: The filler of the tubular tungsten carbide welding rod consists of 70-80% of 16-40 mesh sintered tungsten carbide particles, 10-20% of 40-80 mesh cast tungsten carbide particles, 5-6% of alloy powder mixture, and organic resin 1-2% composition, wherein the composition and content of each alloy powder in the whole alloy powder are by weight: chromium Cr: 6-9%, silicon Si: 3-5%, boron B: 7-10%, nickel Ni: margin. The filler accounts for 63% by weight of the tubular electrode; the above filler is mixed and stirred, and then rolled together with cold-rolled low-carbon steel strip or nickel alloy strip or cobalt alloy strip and drawn and formed. The wet sand wear test results show that the wear resistance of the surfacing layer of the tubular tungsten carbide electrode is more than 30% higher than that of the existing similar electrodes at home and abroad.

Embodiment 2

[0012] Embodiment 2: The filler of the tubular tungsten carbide electrode consists of 70-80% of 16-40 mesh sintered tungsten carbide particles by weight, 10-20% of 40-80 mesh cast tungsten carbide particles, 2-4% of alloy powder mixture, and organic resin Composition of 0.5-2%, the composition and content of each alloy powder in the whole alloy powder are by weight: chromium Cr: 10-12%, silicon Si: 12-14%, boron B: 2-3%, manganese Mn : 13-15%, nickel Ni: balance. The filler accounts for 65% by weight of the tubular electrode. The wet sand wear test results show that the wear resistance of the surfacing layer of the tubular tungsten carbide electrode is more than 40% higher than that of the existing similar electrodes at home and abroad.

Embodiment 3

[0013] Embodiment 3: The filler of the tubular tungsten carbide electrode consists of 70-80% of 16-40 mesh sintered tungsten carbide particles, 10-20% of 40-80 mesh cast tungsten carbide particles, 2-4% of alloy powder mixture, and organic resin Composition of 0.5-2%, the composition and content of each alloy powder in the whole alloy powder are by weight: chromium Cr: 10-12%, silicon Si: 12-14%, boron B: 2-3%, manganese Mn : 13~15%, cerium oxide Ce 2 o 3 : 1 to 2%, nickel Ni: balance. The filler accounts for 65% by weight of the tubular electrode. The wet sand wear test results show that the wear resistance of the tubular tungsten carbide electrode is more than 40% higher than that of the existing similar electrodes at home and abroad.

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PUM

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Abstract

An antiwear tubular welding tungsten carbide electrode for strengthening the surface of steel members, such as the surface of steel roller in roller bit, is composed of the welding tube and the filler consisting of sintered tungsten carbide particles, cast tngsten carbide particles, organic adhesive and powdered alloy containing Cr, Si, B, Mn and Ni.

Description

technical field [0001] The invention relates to a wear-resistant surfacing material, which is mainly used for strengthening the tooth surface of the steel tooth cone bit and the palm tip of the cone bit, and can also be used for surface strengthening of other steel parts. Background technique [0002] In the prior art, there are two main types of wear-resistant materials used for surfacing welding of the tooth surface of the steel tooth cone bit: one is the wear-resistant composite material of iron-based alloy and tungsten carbide wear-resistant particles; the other is nickel-based Wear-resistant composite material of alloy and tungsten carbide wear-resistant particles. These wear-resistant composites are often made into tubular electrodes for ease of use. Practice shows that the wear-resistant particles are severely burned during the surfacing process of the former, which greatly reduces the wear resistance of the wear-resistant particles. The reason may be mainly due to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/12B23K35/22B23K35/362
Inventor 吴建张烈华肖岸
Owner SINOPEC OILFIELD EQUIP CORP
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