A pipe welding rod with low stress wear resistance

A low-stress, welding rod technology, applied in the direction of welding equipment, welding medium, welding/cutting medium/material, etc., to achieve good welding processability, improved pressure bearing capacity and impact resistance, and good welding processability

Active Publication Date: 2015-08-19
KINGDREAM PLC CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for now, how to choose a more optimized electrode filler to improve and perfect the wear resistance and welding process of this type of pipe electrode still needs to be further discussed and solved.

Method used

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  • A pipe welding rod with low stress wear resistance
  • A pipe welding rod with low stress wear resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: design and manufacture a kind of pipe welding rod according to the technical scheme of the present invention, the filler of pipe welding rod is by the casting tungsten carbide particle of 15% macrocrystalline tungsten carbide particle, 65% surface carburizing treatment, 15% by weight percentage. % spherical cast tungsten carbide particles, 4% alloy powder and 1% organic binder, among which, the particle size of macrocrystalline tungsten carbide particles is 60-100 mesh, and the particle size of cast tungsten carbide particles after carburizing treatment is 80-140 mesh The particle size of spherical cast tungsten carbide particles is 80-200 mesh, and the above particle sizes are all sieved according to the American standard. The weight percentage of each component of the alloy powder in the alloy powder is 18% iron, 12% silicon, 48% manganese, 11% niobium, Nickel is 11%, and the percentage by weight of the filler in the tube electrode is 65%. The welded pip...

Embodiment 2

[0021] Embodiment 2: Design and manufacture a kind of pipe welding rod according to the technical scheme of the present invention, the filler in the pipe welding rod welded pipe is by weight percent the casting tungsten carbide particle of 15% macrocrystalline tungsten carbide particle, 15% surface carburizing treatment , 64% spherical cast tungsten carbide particles, 5% alloy powder and 1% organic binder, among which, the particle size of macrocrystalline tungsten carbide particles is 20-100 mesh, and the particle size of cast tungsten carbide particles after carburizing treatment is 40 ~100 mesh, spherical casting tungsten carbide particle size is 80 ~ 200 mesh, the above particle size is sieved according to the American standard, the weight percentage of each component of the alloy powder is iron 15%, silicon 15%, manganese 50%, niobium 10 %, nickel 10%, and the percentage by weight of the filler in the tube electrode is 73%. The welded pipe is rolled from a low-carbon stee...

Embodiment 3

[0022] Embodiment 3: design and manufacture a kind of pipe welding rod according to the technical scheme of the present invention, the filler of pipe welding rod is by the casting tungsten carbide particle of 45% macrocrystalline tungsten carbide particle, 25% surface carburizing treatment, 5% by weight percentage. % spherical cast tungsten carbide particles, 20% mechanically crushed cast tungsten carbide particles, 4% alloy powder and 1% organic binder, among which, the particle size of macrocrystalline tungsten carbide particles is 60-140 mesh, and the surface is carburized The particle size of cast tungsten carbide treated is 80-200 mesh, the particle size of spherical cast tungsten carbide particle is 40-100 mesh, and the particle size of mechanically crushed cast tungsten carbide particle is 40-100 mesh. The weight percentage of the components in the alloy powder is 18% of iron, 12% of silicon, 48% of manganese, 11% of niobium and 11% of nickel, and the weight percentage o...

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Abstract

A tube welding rod resistant to low stress abrasion comprises a welded tube and a filler filling the welded tube. Components of the filler comprise macrocrystalline tungsten carbide particles, cast tungsten carbide particles and / or spherical cast tungsten carbide particles undergone surface carburization treatment, mechanically ground cast tungsten carbide particles, alloy powder, and an organic binder. The weight percentages of the components are: the macrocrystalline tungsten carbide particles being 10-50%, the cast tungsten carbide particles and / or spherical cast tungsten carbide particles undergone surface carburization treatment being 43-85%, the mechanically ground cast tungsten carbide particles being 0-20%, the alloy powder being 2-6%, and the organic binder being 0.2-1%. The welding rod improves the abrasion resistance performance of the hard-faced layer in the low stress working condition, and is particularly suitable for surface hardening of cone rolling bits and diamond bits.

Description

technical field [0001] The invention relates to a low-stress wear-resistant pipe welding rod, which is used for welding of wear-resistant layers, and is especially suitable for use in low-stress wear conditions. It can be used for surface strengthening of geological drilling roller cone bits and diamond bits, and can also be used for Surface strengthening of other steel materials. Background technique [0002] With the advancement of geological exploration and drilling technology, oil drilling has higher and higher performance requirements for drilling tools, and the working conditions of oil drilling bits are becoming more and more complex and harsh. Wear resistance also poses increasingly higher demands. [0003] There are many areas on the drill bit that need to be improved in wear resistance. From the perspective of the working conditions of the drill bit and the requirements for wear resistance, one is that the wear resistance under low stress is required to be high, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362B23K35/22
CPCB23K35/362B23K35/0261B23K35/0244B23K2201/002B23K35/40B23K35/327B23K35/3026B23K35/24B23K2101/002
Inventor 张烈华宋全胜
Owner KINGDREAM PLC CO
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