CN111425146A - Composite welding layer sleeve for rock drilling and preparation method thereof - Google Patents
Composite welding layer sleeve for rock drilling and preparation method thereof Download PDFInfo
- Publication number
- CN111425146A CN111425146A CN202010271445.9A CN202010271445A CN111425146A CN 111425146 A CN111425146 A CN 111425146A CN 202010271445 A CN202010271445 A CN 202010271445A CN 111425146 A CN111425146 A CN 111425146A
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- CN
- China
- Prior art keywords
- nickel
- rock drilling
- welding layer
- welding
- tungsten carbide
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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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
- B23K5/00—Gas flame welding
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
Abstract
The invention provides a composite welding layer sleeve for rock drilling, which consists of a base material and a welding layer compounded on the surface of the base material; the welding flux of the welding layer is composed of a nickel-based self-fluxing alloy and nickel-coated tungsten carbide, the content of the nickel-based self-fluxing alloy is 40-70 wt%, and the content of the nickel-coated tungsten carbide is 30-60 wt%. The application also provides a preparation method of the composite welding layer sleeve for rock drilling. The application provides a compound welding layer sleeve pipe has good anti erosion ability, and the extension that can be great is the life of sleeve pipe for the rock drilling, has extensive application in down-the-hole, top hammer and roller bit rock drilling field.
Description
Technical Field
The invention relates to the technical field of material and workpiece preparation, in particular to a composite welding layer sleeve for rock drilling and a preparation method thereof.
Background
Along with the promotion of air compressor machine and drilling equipment technique, the washing effort that drilling spare parts such as drilling rod, impacter outer cylinder, drill rod clamping sleeve and joint received is constantly strengthened at the drilling in-process, and the life-span constantly shortens.
In order to meet the demands of customers on high efficiency and low cost, various technologies are applied to rock drills, such as carburizing of the drill collar, case hardening of the outer cylinder, and alloying of the joint end. The use of these techniques extends the useful life of these impactor devices to some extent, but still does not meet the customer's requirements when encountering quartz sandstones which are particularly aggressive. The nickel-based self-fluxing welding powder and the welding rod are applied to many fields, but have not found relevant application in the field of rock drilling tools, and particularly, the WC powder reinforced welding layer technology has not been reported on the rock drilling tools, because: the production efficiency of the coating and welding technology is low; the traditional coating welding technology can cause the hardness of the transition part of a welding layer and a matrix to be reduced, and the toughness of the matrix can be negatively influenced.
Disclosure of Invention
The invention aims to provide a wear-resistant and corrosion-resistant composite welding layer sleeve for rock drilling.
In view of the above, the present application provides a composite welding layer sleeve for rock drilling, which is composed of a substrate and a welding layer compounded on the surface of the substrate; the welding flux of the welding layer is composed of a nickel-based self-fluxing alloy and nickel-coated tungsten carbide, the content of the nickel-based self-fluxing alloy is 40-70 wt%, and the content of the nickel-coated tungsten carbide is 30-60 wt%.
Preferably, the material of the base material is selected from 42CrMo, 40CrMnMo, 45CrNiMoV, 40SiMnCrNi2Mo or quenched and low-temperature tempered 22SiMnCrNi2 MoV.
Preferably, the nickel-based self-fluxing alloy is selected from one or more of Ni60, Ni15, Ni30, Ni35, Ni50 and NiCrBSi.
Preferably, the content of nickel in the nickel-coated tungsten carbide is 10-30 wt%.
The application also provides a preparation method of the composite welding layer sleeve for rock drilling, which comprises the following steps:
sequentially purifying and sandblasting the base material, spraying and remelting solder on the surface of the sandblasted base material, and finally tempering to obtain a composite welding layer sleeve for rock drilling;
the welding flux is composed of a nickel-based self-fluxing alloy and nickel-coated tungsten carbide, the content of the nickel-based self-fluxing alloy is 40-70 wt%, and the content of the nickel-coated tungsten carbide is 30-60 wt%.
Preferably, the spraying and remelting process parameters are as follows: the oxygen pressure is 0.4-0.5 MPa, the acetylene pressure is 0.03-0.06 MPa, the preheating temperature is 200-300 ℃, the spraying distance is 150-200 mm, and the remelting distance is 10-25 mm.
Preferably, the tempering temperature is 150-210 ℃ and the time is 2-4 h.
Preferably, the spraying and remelting tool is an oxyacetylene flame spraying and welding dual-purpose gun.
The application provides a composite welding layer sleeve for rock drilling, which consists of a base material and a welding layer compounded on the surface of the base material; the welding flux of the welding layer is composed of a nickel-based self-fluxing alloy and nickel-coated tungsten carbide, the content of the nickel-based self-fluxing alloy is 40-70 wt%, and the content of the nickel-coated tungsten carbide is 30-60 wt%. The welding flux nickel-based self-fluxing alloy of the composite welding layer sleeve for rock drilling can improve the welding strength of the welding layer, and the nickel-based tungsten carbide can be wetted with the nickel-based self-fluxing alloy to enhance the erosion resistance of the welding layer; therefore, the composite welding layer sleeve for rock drilling provided by the application has excellent wear-resisting and corrosion-resisting properties.
Drawings
Fig. 1 is a uniform bendability coating of the WC reinforced nickel-based composite weld layer casing for rock drilling according to the present invention.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
In view of the performance requirements of the rock drilling tool and the difficulty of applying a coating and welding process to the rock drilling tool, the application provides the composite welding layer casing pipe for the rock drilling, and the tool for the rock drilling uses nickel-based self-fluxing alloy and nickel-coated tungsten carbide as welding materials, so that the casing pipe has good erosion resistance, and the service life of the casing pipe for the rock drilling can be greatly prolonged. Specifically, the embodiment of the invention discloses a composite welding layer sleeve for rock drilling, which consists of a base material and a welding layer compounded on the surface of the base material; the welding flux of the welding layer is composed of a nickel-based self-fluxing alloy and nickel-coated tungsten carbide, the content of the nickel-based self-fluxing alloy is 40-70 wt%, and the content of the nickel-coated tungsten carbide is 30-60 wt%.
In the solder, the content of the nickel-based self-fluxing alloy can increase the welding strength of a welding layer, is 40-70 wt%, and when the content is further increased, the welding strength is improved, but the erosion resistance is reduced, so that the content of the nickel-based self-fluxing alloy needs to balance the welding strength and the erosion resistance. The nickel-based self-fluxing alloy is selected from one or more of Ni60, Ni15, Ni30, Ni35, Ni50 and NiCrBSi, and more particularly, the nickel-based self-fluxing alloy is selected from Ni60, NiCrBSi or Ni 35. The source of the above-mentioned nickel-based self-fluxing alloy is not particularly limited in this application. The nickel-coated tungsten carbide can be wetted with the nickel-based self-fluxing alloy, so that the erosion resistance of the welding layer is enhanced; the content of the nickel-coated tungsten carbide is 30-60 wt%, and if the content of the nickel-coated tungsten carbide is further increased, the erosion resistance of the welding layer is improved, but defects are easily formed, so that the welding layer is easy to fall off in an erosion process, and therefore, the content of the nickel-coated tungsten carbide is not determined arbitrarily, and the erosion resistance and the adhesion of the welding layer need to be balanced. The content of nickel in the nickel-coated tungsten carbide is 10-30 wt%, and the source of the nickel-coated tungsten carbide is not particularly limited.
In the composite welding sleeve for rock drilling, the matrix is quenched and tempered steel or other types of steel; more specifically, the quenched and tempered steel is selected from 42CrMo, 40CrMnMo, 45CrNiMoV or 40SiMnCrNi2Mo, and the other type of steel is selected from quenched and low-temperature tempered 22SiMnCrNi2 MoV. The composite welding sleeve for rock drilling comprises a drill rod for rock drilling, an outer cylinder of an impactor for rock drilling, a connector and a drill clamping sleeve. An example is shown in figure 1.
The application also provides a preparation method of the composite welding layer sleeve for rock drilling, which comprises the following steps:
sequentially purifying and sandblasting the base material, spraying and remelting solder on the surface of the sandblasted base material, and finally tempering to obtain a composite welding layer sleeve for rock drilling;
the welding flux is composed of a nickel-based self-fluxing alloy and nickel-coated tungsten carbide, the content of the nickel-based self-fluxing alloy is 40-70 wt%, and the content of the nickel-coated tungsten carbide is 30-60 wt%.
In the preparation process of the composite welding layer sleeve for rock drilling, the solder is explained in detail, and is not described again here; and preparing the welding flux by adopting the powder states of the nickel-based self-fluxing alloy and the nickel-coated tungsten carbide in the preparation process.
In the above-described production method, the substrate is first subjected to cleaning and blasting by a technique known to those skilled in the art, and the present application is not particularly limited.
Spraying and remelting the solder on the surface of the treated base material; in this process, the technical means of spraying and remelting are technical processes well known to those skilled in the art, and the present application is not particularly limited, but the relevant parameters are defined in the present application: the oxygen pressure is 0.4-0.5 MPa, the acetylene pressure is 0.03-0.06 MPa, the preheating temperature is 200-300 ℃, the spraying distance is 150-200 mm, and the remelting distance is 10-25 mm; the forming performance of the welding layer can be influenced due to improper adjustment of the oxygen and acetylene pressure, and the required strip-shaped folded welding layer cannot be obtained; the preheating temperature of the matrix is high, so that the obdurability of the matrix is reduced, the internal stress of a welding layer is increased, and the matrix is easy to fall off in the using process; the spraying distance determines the remelting and solidification efficiency of the welding powder; the remelting spacing determines the basic morphology of the strip-shaped folded solder layer.
The method is finally tempered to obtain the composite welding layer sleeve for rock drilling, wherein in the process, the tempering temperature is 150-210 ℃, and the time is 2-4 hours; the tempering temperature is to eliminate the internal stress at the transition between the weld layer and the substrate after the remelting welding, and should not be too high or too low.
For further understanding of the present invention, the following is a detailed description of the method for preparing a composite layer sleeve according to the present invention with reference to the following examples, and the scope of the present invention is not limited by the following examples.
Example 1
Mixing Ni60 self-fluxing powder and nickel-coated tungsten carbide powder according to the mass ratio of 55: 45 to prepare solder powder, then purifying and sand blasting the 22SiMnCrNi2MoV material by using a 5-inch drill collar prepared by quenching and low-return, and spraying and remelting by using a QH-2/h type oxyacetylene flame spraying and spray welding dual-purpose gun, wherein the specific process parameters are as follows: oxygen pressure of 0.45MPa, acetylene pressure of 0.05MPa, preheating temperature of 300 ℃, spraying distance of 200mm, remelting distance of 15mm, and finally obtaining the WC reinforced nickel-based composite welding layer drill collar.
The specific application result shows that the WC reinforced nickel-based composite welding layer drill sleeve prepared by the embodiment has more rock drilling 1500m longer than the service life of the carburized 23CrNi3MoA material drill sleeve, 2000m longer than the surface-quenched 40CrMnMo drill sleeve, and 2300m longer than the drill sleeve which is directly quenched by 22SiMnCrNi2MoV oil and has low return.
Example 2
The method comprises the following steps of mixing NiCrBSi self-fluxing powder and nickel-coated tungsten carbide powder according to the mass ratio of 40: 60 to prepare solder powder, purifying and sand blasting an 8-inch drill collar prepared from a 45CrNiMoV material by adopting a quenching and tempering process, and spraying and remelting by adopting a QH-2/h type oxyacetylene flame spraying and spray welding dual-purpose gun, wherein the specific process parameters are as follows: oxygen pressure of 0.35MPa, acetylene pressure of 0.04MPa, preheating temperature of 250 ℃, spraying distance of 160mm, remelting distance of 20mm, and finally obtaining the WC reinforced nickel-based composite welding layer drill collar.
The specific application results show that the WC reinforced nickel-based composite welding layer drill collar prepared by the embodiment has the service life of 1000m more rock drilling than that of a carburized 23CrNi3MoA material drill collar, 1300m more rock drilling than that of a surface-quenched 40CrMnMo drill collar, and 1560m more rock drilling than that of a drill collar which is directly quenched by 22SiMnCrNi2MoV oil and has low return.
Example 3
Mixing Ni35 self-fluxing powder and nickel-coated tungsten carbide powder according to the mass ratio of 65: 35 to prepare solder powder, then purifying and sandblasting a 4-inch outer cylinder prepared from a 40CrNnMo material by adopting a quenching and tempering process, spraying and remelting by adopting a QH-2/h type oxyacetylene flame spraying and welding dual-purpose gun, spraying 200mm at the end of a drill collar, wherein the specific process parameters are as follows: oxygen pressure of 0.25MPa, acetylene pressure of 0.03MPa, preheating temperature of 200 ℃, spraying distance of 180mm, remelting distance of 10mm, and finally obtaining the WC reinforced nickel-based composite welding layer outer cylinder. The specific application result shows that the outer cylinder of the WC reinforced nickel-based composite welding layer prepared by the embodiment has more rock drilling 2000m than the surface quenched 40CrMnMo outer cylinder and has more rock drilling 2680m than the quenched and tempered 45CrNiMoV outer cylinder.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A composite welding layer sleeve for rock drilling comprises a base material and a welding layer compounded on the surface of the base material; the welding flux of the welding layer is composed of a nickel-based self-fluxing alloy and nickel-coated tungsten carbide, the content of the nickel-based self-fluxing alloy is 40-70 wt%, and the content of the nickel-coated tungsten carbide is 30-60 wt%.
2. A composite weld overlay sleeve for rock drilling as claimed in claim 1, wherein the base material is selected from 42CrMo, 40CrMnMo, 45CrNiMoV, 40 simncni 2Mo or quenched + cryotempered 22 simncni 2 MoV.
3. A composite weld layer sleeve for rock drilling as claimed in claim 1, wherein the nickel based self fluxing alloy is selected from one or more of Ni60, Ni15, Ni30, Ni35, Ni50 and NiCrBSi.
4. The composite weld layer sleeve for rock drilling as claimed in claim 1, wherein the nickel-coated tungsten carbide contains nickel in an amount of 10 to 30 wt%.
5. The method of making a composite layer sleeve for rock drilling of claim 1, comprising:
sequentially purifying and sandblasting the base material, spraying and remelting solder on the surface of the sandblasted base material, and finally tempering to obtain a composite welding layer sleeve for rock drilling;
the welding flux is composed of a nickel-based self-fluxing alloy and nickel-coated tungsten carbide, the content of the nickel-based self-fluxing alloy is 40-70 wt%, and the content of the nickel-coated tungsten carbide is 30-60 wt%.
6. The preparation method of claim 5, wherein the spraying and remelting process parameters are as follows: the oxygen pressure is 0.4-0.5 MPa, the acetylene pressure is 0.03-0.06 MPa, the preheating temperature is 200-300 ℃, the spraying distance is 150-200 mm, and the remelting distance is 10-25 mm.
7. The preparation method according to claim 5, wherein the tempering temperature is 150-210 ℃ and the tempering time is 2-4 h.
8. The method for preparing the alloy material according to claim 5, wherein the tool for spraying and remelting is an oxyacetylene flame spraying and welding dual-purpose gun.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010271445.9A CN111425146A (en) | 2020-04-08 | 2020-04-08 | Composite welding layer sleeve for rock drilling and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010271445.9A CN111425146A (en) | 2020-04-08 | 2020-04-08 | Composite welding layer sleeve for rock drilling and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553560A (en) * | 2020-12-02 | 2021-03-26 | 长沙黑金刚实业有限公司 | WC-Co alloy coating casing pipe for rock drilling and preparation method thereof |
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2020
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| CN112553560A (en) * | 2020-12-02 | 2021-03-26 | 长沙黑金刚实业有限公司 | WC-Co alloy coating casing pipe for rock drilling and preparation method thereof |
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Application publication date: 20200717 |
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