CN110026706B - Wear-resistant flux-cored wire for oil drill pipe head and manufacturing method thereof - Google Patents
Wear-resistant flux-cored wire for oil drill pipe head and manufacturing method thereof Download PDFInfo
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- CN110026706B CN110026706B CN201910213330.1A CN201910213330A CN110026706B CN 110026706 B CN110026706 B CN 110026706B CN 201910213330 A CN201910213330 A CN 201910213330A CN 110026706 B CN110026706 B CN 110026706B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention relates to the technical field of flux-cored wires, in particular to a wear-resistant flux-cored wire for an oil drill pipe head and a manufacturing method thereof.
Description
Technical Field
The invention relates to the technical field of flux-cored wires, in particular to a wear-resistant flux-cored wire for a petroleum drill pipe head and a manufacturing method thereof.
Background
In the field of drilling, a drill bit is usually fixed on a drill rod through a drill rod joint for drilling, but friction occurs among the drill bit, the drill rod joint and the drill rod during drilling, so that the service life of the drill rod joint and the service life of the drill rod are greatly reduced, and therefore, in order to avoid abrasion, the abrasion resistance of a flux-cored wire is usually required to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a wear-resistant flux-cored wire for a petroleum drill pipe head and a manufacturing method thereof, and aims to solve the technical problem of how to improve the wear resistance and strength of the wear-resistant flux-cored wire for the petroleum drill pipe head.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the wear-resistant flux-cored wire for the oil drill pipe head consists of a flux core and a sheath coated on the outer side of the flux core, wherein the flux core comprises the following components in parts by weight: 20-30 parts of iron powder, 5-10 parts of manganese metal, 5-10 parts of nickel powder, 2-5 parts of ferromolybdenum, 10-15 parts of atomized ferrosilicon, 5-10 parts of ferroniobium, 1-5 parts of rare earth fluoride, 1-5 parts of sodium fluoride, 1-5 parts of graphite, 15-30 parts of tungsten carbide and 1-10 parts of chromium metal.
Further, the medicine core comprises the following components in parts by weight: 30 parts of iron powder, 8 parts of manganese metal, 6 parts of nickel powder, 5 parts of ferromolybdenum, 15 parts of atomized ferrosilicon, 7 parts of ferroniobium, 5 parts of rare earth fluoride, 3 parts of sodium fluoride, 2 parts of graphite, 21 parts of tungsten carbide and 9 parts of metal chromium.
Further, the particle sizes of the selected iron powder, the metal manganese, the nickel powder, the ferromolybdenum, the atomized ferrosilicon, the ferroniobium, the rare earth fluoride, the sodium fluoride, the graphite, the tungsten carbide and the metal chromium are all 20-60 mu m.
Further, the outer skin is a low-carbon steel belt outer skin.
Furthermore, the width of the low-carbon steel strip outer skin is 18-22 mm, and the thickness of the low-carbon steel strip outer skin is 0.4-0.46 mm.
Further, the weight of the flux core accounts for 50-55% of the total weight of the whole wear-resistant flux-cored wire.
The manufacturing method of the wear-resistant flux-cored wire for the oil drill pipe head comprises the following steps:
s1: the method comprises the following steps of selecting 20-30 parts by weight of iron powder, 5-10 parts by weight of manganese metal, 5-10 parts by weight of nickel powder, 2-5 parts by weight of ferromolybdenum, 10-15 parts by weight of atomized ferrosilicon, 5-10 parts by weight of ferroniobium, 1-5 parts by weight of rare earth fluoride, 1-5 parts by weight of sodium fluoride, 1-5 parts by weight of graphite, 15-30 parts by weight of tungsten carbide and 1-10 parts by weight of chromium metal as raw materials, and mixing and stirring the raw materials to obtain the flux core powder.
The beneficial effects brought by the invention are as follows: compared with the existing welding wire, the wear-resistant flux-cored wire for the oil drill pipe head prepared by the method has a better wear-resistant effect, so that the service life of equipment is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of the steps of the manufacturing method of the wear-resistant flux-cored wire for the oil drill pipe head of the invention;
FIG. 2 is a graphical representation of the geometric parameters of an as-sampled drill collar in a wear resistance test and a welded drill collar sample of the wear resistant flux cored wire prepared in example 1;
FIG. 3 is a graph showing the results of the abrasion resistance test in comparison.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustration and explanation, and are not intended to limit the present invention.
In the wear-resistant flux-cored wire for the oil drill pipe head and the manufacturing method thereof, the wear-resistant flux-cored wire for the oil drill pipe head consists of a flux core and a sheath coated on the outer side of the flux core, wherein the flux core comprises the following components in parts by weight: 20-30 parts of iron powder, 5-10 parts of manganese metal, 5-10 parts of nickel powder, 2-5 parts of ferromolybdenum, 10-15 parts of atomized ferrosilicon, 5-10 parts of ferroniobium, 1-5 parts of rare earth fluoride, 1-5 parts of sodium fluoride, 1-5 parts of graphite, 15-30 parts of tungsten carbide and 1-10 parts of chromium metal.
The flux core comprises 50-55% of the total weight of the whole welding wire, the particle sizes of iron powder, metal manganese, nickel powder, ferromolybdenum, atomized ferrosilicon, ferroniobium, rare earth fluoride, sodium fluoride, graphite, tungsten carbide and metal chromium are all 20-60 mu m, and the outer skin is a low-carbon steel belt outer skin with the width of 18-22 mm and the thickness of 0.4-0.46 mm.
The invention will be illustrated subsequently in the following specific examples:
example 1: the manufacturing method of the wear-resistant flux-cored wire for the oil drill pipe head comprises the following steps:
s1: selecting 30 parts of iron powder with the grain diameter of 40 mu m, 8 parts of metal manganese, 6 parts of nickel powder, 5 parts of ferromolybdenum, 15 parts of atomized ferrosilicon, 7 parts of ferroniobium, 5 parts of rare earth fluoride, 3 parts of sodium chloride, 2 parts of graphite and 21 parts of tungsten carbide as raw materials in parts by weight, and mixing and stirring the raw materials to obtain flux-cored powder;
s2: selecting a low-carbon steel strip with the width of 20mm and the thickness of 0.4mm, rolling the low-carbon steel strip into a U shape to be used as a sheath, and placing the flux-cored powder obtained in the step S1 into the sheath for packaging to obtain a semi-finished product of the wear-resistant flux-cored wire;
s3: and (4) drawing the semi-finished product of the wear-resistant flux-cored wire obtained in the step (S2) to enable the diameter of the semi-finished product to reach 1.6mm to obtain the wear-resistant flux-cored wire, wherein the flux core accounts for 53.4% of the wear-resistant flux-cored wire.
Example 2: the manufacturing method of the wear-resistant flux-cored wire for the oil drill pipe head comprises the following steps:
s1: selecting 20 parts of iron powder with the grain diameter of 20 mu m, 5 parts of metal manganese, 5 parts of nickel powder, 2 parts of ferromolybdenum, 10 parts of atomized ferrosilicon, 5 parts of ferroniobium, 1 part of rare earth fluoride, 1 part of sodium chloride, 1 part of graphite and 15 parts of tungsten carbide as raw materials in parts by weight, and mixing and stirring the raw materials to obtain flux-cored powder;
s2: selecting a low-carbon steel strip with the width of 18mm and the thickness of 0.4mm, rolling the low-carbon steel strip into a U shape to be used as a sheath, and placing the flux-cored powder obtained in the step S1 into the sheath for packaging to obtain a semi-finished product of the wear-resistant flux-cored wire;
s3: and (4) drawing the semi-finished product of the wear-resistant flux-cored wire obtained in the step (S2) to enable the diameter of the semi-finished product to reach 1.6mm to obtain the wear-resistant flux-cored wire, wherein the flux core accounts for 50% of the wear-resistant flux-cored wire.
Example 3: the manufacturing method of the wear-resistant flux-cored wire for the oil drill pipe head comprises the following steps:
s1: selecting 30 parts of iron powder with the grain diameter of 60 mu m, 10 parts of metal manganese, 10 parts of nickel powder, 5 parts of ferromolybdenum, 15 parts of atomized ferrosilicon, 10 parts of ferroniobium, 5 parts of rare earth fluoride, 5 parts of sodium fluoride, 5 parts of graphite and 30 parts of tungsten carbide as raw materials in parts by weight, and mixing and stirring the raw materials to obtain flux core powder;
s2: selecting a low-carbon steel strip with the width of 22mm and the thickness of 0.46mm, rolling the low-carbon steel strip into a U shape to be used as a sheath, and placing the flux-cored powder obtained in the step S1 into the sheath for packaging to obtain a semi-finished product of the wear-resistant flux-cored wire;
s3: and (4) drawing the semi-finished product of the wear-resistant flux-cored wire obtained in the step (S2) to enable the diameter of the semi-finished product to reach 1.6mm to obtain the wear-resistant flux-cored wire, wherein the flux core accounts for 55% of the wear-resistant flux-cored wire.
The wear-resistant flux-cored wires prepared in the embodiments 1, 2 and 3 are respectively subjected to build-up welding on steel, and the measured HRC of the flux-cored wires after welding is more than 62 and less than 65, the surfaces of the flux-cored wires are free from slag, the welding bead is smooth, and the conditions such as splashing do not occur in the welding process.
And (3) wear resistance test: the original sampling drill collar and the drill collar welded by the wear-resistant flux-cored wire prepared in the embodiment 1 are respectively selected as samples, which are respectively marked as sample No. 0 and sample No. DPM-150, and the geometric parameters of the samples are shown in FIG. 2.
And (3) carrying out visual analysis on the sample No. 0 at a magnification of 5-10 times, machining an original part of a connector part of the drill rod joint on the sample DPM-150, slotting a surface layer, and then cutting the drill rod joint of the sample DPM-150 on a test bed, wherein the dimensional tolerance reaches a quality level of 7 and is not lower than the requirement of 7-level surface roughness.
Spectral analysis sampling and spectral analysis were performed on sample DPM-150, and the roughness of sample No. 0 was measured.
Abrasive material having a particle size of 16 mg was prepared, screened in a chamber and preliminarily dried so that the moisture parameter did not exceed 0.15%.
The hardness of the surface layer of sample No. 0 was analyzed, and sample No. DPM-150 was tested on a test bed according to GOST23.208-79 standard to measure the abrasion loss, and the test results are shown in FIG. 3.
In conclusion, the experiment can obtain that the wear-resistant flux-cored wire for the oil drill pipe head prepared by the invention has better technical effect compared with the prior art.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The wear-resistant flux-cored wire for the oil drill pipe head is characterized in that:
the drug core consists of a drug core and a sheath coated on the outer side of the drug core, wherein the drug core comprises the following components in parts by weight: 20-30 parts of iron powder, 5-10 parts of metal manganese, 5-10 parts of nickel powder, 2-5 parts of ferromolybdenum, 10-15 parts of atomized ferrosilicon, 5-10 parts of ferroniobium, 1-5 parts of rare earth fluoride, 1-5 parts of sodium fluoride, 1-5 parts of graphite, 15-30 parts of tungsten carbide and 1-10 parts of metal chromium, wherein the iron powder, the manganese metal, the nickel powder, the ferromolybdenum, the atomized ferrosilicon, the ferroniobium, the rare earth fluoride, the sodium fluoride, the graphite, the tungsten carbide and the metal chromium are selected, the particle size of the sheath is 20-60 mu m, the sheath is a low-carbon steel belt sheath, the width of the low-carbon steel belt sheath is 18-22 mm, the thickness is 0.4-0.46 mm, and the weight of the flux core accounts for 50-55% of the total weight of the wear-resistant flux-cored.
2. The wear-resistant flux-cored wire for the oil drill pipe head as recited in claim 1, wherein: the medicine core comprises the following components in parts by weight: 30 parts of iron powder, 8 parts of manganese metal, 6 parts of nickel powder, 5 parts of ferromolybdenum, 15 parts of atomized ferrosilicon, 7 parts of ferroniobium, 5 parts of rare earth fluoride, 3 parts of sodium fluoride, 2 parts of graphite, 21 parts of tungsten carbide and 9 parts of metal chromium.
3. The manufacturing method of the wear-resistant flux-cored wire for the oil drill pipe head as claimed in claim 1, is characterized in that:
the method comprises the following steps:
s1: selecting 20-30 parts by weight of iron powder, 5-10 parts by weight of manganese metal, 5-10 parts by weight of nickel powder, 2-5 parts by weight of ferromolybdenum, 10-15 parts by weight of atomized ferrosilicon, 5-10 parts by weight of ferroniobium, 1-5 parts by weight of rare earth fluoride, 1-5 parts by weight of sodium fluoride, 1-5 parts by weight of graphite, 15-30 parts by weight of tungsten carbide and 1-10 parts by weight of chromium metal as raw materials, and mixing and stirring the raw materials to obtain a flux core powder material;
s2: packaging the flux-cored powder obtained in the step S1 by using a sheath to obtain a semi-finished product of the wear-resistant flux-cored wire;
s3: and drawing the semi-finished product of the wear-resistant flux-cored wire obtained in the step S2 to obtain the wear-resistant flux-cored wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910213330.1A CN110026706B (en) | 2019-03-20 | 2019-03-20 | Wear-resistant flux-cored wire for oil drill pipe head and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910213330.1A CN110026706B (en) | 2019-03-20 | 2019-03-20 | Wear-resistant flux-cored wire for oil drill pipe head and manufacturing method thereof |
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| CN110026706A CN110026706A (en) | 2019-07-19 |
| CN110026706B true CN110026706B (en) | 2021-05-28 |
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| CN201910213330.1A Active CN110026706B (en) | 2019-03-20 | 2019-03-20 | Wear-resistant flux-cored wire for oil drill pipe head and manufacturing method thereof |
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| JP2019025525A (en) * | 2017-07-31 | 2019-02-21 | 新日鐵住金株式会社 | Flux-cored wire for gas-shielded arc welding, and manufacturing method of welded joint |
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2019
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| US4016399A (en) * | 1974-06-17 | 1977-04-05 | La Soudure Electrique Autogene, Procedes Arcos | Flux-cored wire for electric arc welding of soft steels or low-alloyed steels |
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| CN110026706A (en) | 2019-07-19 |
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