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Wear-resistant flux-cored welding wire for oil drill pipe head and manufacturing method thereof

A technology of flux-cored welding wire and oil drill pipe, which is applied in the direction of manufacturing tools, welding equipment, welding medium, etc., can solve the problems of reducing the service life of drill pipe joints and drill pipe, and achieve the effect of improving the service life and good anti-wear effect.

Active Publication Date: 2021-05-28
江苏孚尔姆焊业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the field of drilling, it is usually necessary to fix the drill bit on the drill pipe through the drill pipe joint for drilling. However, during the drilling process, friction will occur between the drill bit, the drill pipe joint, and the drill pipe, so that the drill pipe joint and the drill pipe The service life is greatly reduced, so in order to avoid galling, it is usually necessary to increase the wear resistance of the flux cored wire

Method used

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  • Wear-resistant flux-cored welding wire for oil drill pipe head and manufacturing method thereof
  • Wear-resistant flux-cored welding wire for oil drill pipe head and manufacturing method thereof
  • Wear-resistant flux-cored welding wire for oil drill pipe head and manufacturing method thereof

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Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1: A method for manufacturing a wear-resistant flux-cored welding wire for an oil drill pipe head, comprising the following steps:

[0022] S1: 30 parts of iron powder, 8 parts of manganese metal, 6 parts of nickel powder, 5 parts of ferromolybdenum, 15 parts of atomized ferrosilicon, and 7 parts of ferroniobium are selected in parts by weight. , 5 parts of rare earth fluoride, 3 parts of sodium chloride, 2 parts of graphite, and 21 parts of tungsten carbide are raw materials, and the above raw materials are mixed and stirred to obtain the drug core powder;

[0023] S2: Select a low-carbon steel strip with a width of 20 mm and a thickness of 0.4 mm and roll it into a U shape as the outer skin, and put the core powder obtained in S1 into the outer skin for packaging to obtain a semi-finished wear-resistant flux-cored wire;

[0024] S3: drawing the wear-resistant flux-cored wire semi-finished product obtained in S2, and finally making the diameter reach 1.6 mm ...

Embodiment 2

[0025] Embodiment 2: A method for manufacturing a wear-resistant flux-cored wire for an oil drill pipe head, comprising the following steps:

[0026] S1: 20 parts of iron powder, 5 parts of manganese metal, 5 parts of nickel powder, 2 parts of ferromolybdenum, 10 parts of atomized ferrosilicon, and 5 parts of ferroniobium are selected in parts by weight. , 1 part of rare earth fluoride, 1 part of sodium chloride, 1 part of graphite, and 15 parts of tungsten carbide are raw materials, and the above raw materials are mixed and stirred to obtain the drug core powder;

[0027] S2: Select a low-carbon steel strip with a width of 18 mm and a thickness of 0.4 mm and roll it into a U shape as the outer skin, and put the core powder obtained in S1 into the outer skin for packaging to obtain a semi-finished wear-resistant flux-cored wire;

[0028] S3: drawing the wear-resistant flux-cored wire semi-finished product obtained in S2, and finally making the diameter reach 1.6 mm to obtain a...

Embodiment 3

[0029] Embodiment 3: A method for manufacturing a wear-resistant flux-cored wire for an oil drill pipe head, comprising the following steps:

[0030] S1: 30 parts of iron powder, 10 parts of manganese metal, 10 parts of nickel powder, 5 parts of ferromolybdenum, 15 parts of atomized ferrosilicon, and 10 parts of ferroniobium are selected in parts by weight. , 5 parts of rare earth fluoride, 5 parts of sodium fluoride, 5 parts of graphite, and 30 parts of tungsten carbide are raw materials, and the above raw materials are mixed and stirred to obtain the core powder;

[0031] S2: Select a low-carbon steel strip with a width of 22mm and a thickness of 0.46mm and roll it into a U shape as the outer skin, and put the core powder obtained in S1 into the outer skin for packaging to obtain a semi-finished wear-resistant flux-cored wire;

[0032] S3: drawing the wear-resistant flux-cored welding wire semi-finished product obtained in S2, and finally making it have a diameter of 1.6 mm ...

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Abstract

The invention relates to the technical field of flux-cored welding wire, in particular to a wear-resistant flux-cored welding wire for a petroleum drill pipe head and a manufacturing method thereof. The components of the drug core include iron powder, manganese metal, nickel powder, ferromolybdenum, atomized ferrosilicon, ferroniobium, rare earth fluoride, sodium fluoride, graphite, tungsten carbide and metal chromium. The main step is to stir the raw materials first The core powder is mixed to obtain the core powder, and then the core powder is put into the outer skin to package to obtain a semi-finished product, and finally the semi-finished product is drawn and drawn to obtain a wear-resistant flux-cored welding wire, and the wear-resistant core of the oil drill pipe head prepared by this method Compared with the existing welding wire, the welding wire has higher wear resistance and longer service life.

Description

technical field [0001] The invention relates to the technical field of flux-cored welding wires, in particular to a wear-resistant flux-cored welding wire for a petroleum drill pipe head and a manufacturing method thereof. Background technique [0002] In the field of drilling, it is usually necessary to fix the drill bit on the drill pipe through the drill pipe joint for drilling. However, during the drilling process, friction will occur between the drill bit, the drill pipe joint, and the drill pipe, so that the drill pipe joint and the drill pipe The service life is greatly reduced, so in order to avoid wear, it is usually necessary to increase the wear resistance of the flux cored wire. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the present invention provides a wear-resistant flux-cored wire for oil drill pipe heads and a manufacturing method thereof. The technical problem to be solved is how to improve the wear resistance of the we...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40B23K35/12
CPCB23K35/0266B23K35/3053B23K35/406
Inventor 张建忠催涛
Owner 江苏孚尔姆焊业股份有限公司