CN110983185A - High-hardness and high-wear-resistance composite steel pipe - Google Patents
High-hardness and high-wear-resistance composite steel pipe Download PDFInfo
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- CN110983185A CN110983185A CN201911333512.9A CN201911333512A CN110983185A CN 110983185 A CN110983185 A CN 110983185A CN 201911333512 A CN201911333512 A CN 201911333512A CN 110983185 A CN110983185 A CN 110983185A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/14—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
Abstract
The invention provides a high-hardness and high-wear-resistance composite steel pipe, which is formed by welding composite steel plate reelpipes, wherein the weight percentage of the inner layer material of the composite steel pipe is C: 0.6% -0.7%; si: 0.2% -0.4%; mn: 2.5% -3.0%; cr: 0.7% -0.9%; ti: 0.2% -0.4%; v: 0.5% -0.7%; p is less than or equal to 0.02 percent; s is less than or equal to 0.02 percent; the outer layer of the composite steel pipe is made of low-carbon steel with higher toughness and good weldability. The production process of the composite steel pipe comprises the following steps: electric furnace steelmaking, LF refining, die casting forming, cogging annealing, heating rolling, vacuum welding, composite rolling, reel pipe welding and heat treatment. The high-wear-resistance composite steel pipe has high strength and toughness and excellent wear resistance, can meet the long-life requirement of long-distance pipeline conveying fields such as mine tailings, underground backfilling, dredging and dredging, reduces the replacement frequency of the on-site wear-resistant steel pipe, and obviously reduces the construction operation strength.
Description
Technical Field
The invention belongs to the field of wear-resistant composite steel pipes, and particularly relates to a material, a process, a forming method and performance of a high-hardness and high-wear-resistant composite steel pipe.
Background
In many departments such as metallurgy, mine, petrifaction, ship, national defense and military industry, great demands are made on wear-resistant and corrosion-resistant composite steel pipes, such as wear-resistant pipelines used in the fields of mine tailings, underground backfill and dredging. However, the steel pipe continuously conveys hard particle materials, so that the steel pipe is seriously abraded and loses effectiveness, and huge economic loss is caused. Therefore, the research on the wear-resistant steel pipe material and the application technology has important social and economic significance for prolonging service life, saving energy and reducing consumption.
The Chinese patent 201610657325.6 discloses a polymer-based composite steel pipe, which is characterized in that wear-resistant and corrosion-resistant polymer is molded on the inner wall of the steel pipe to prepare the polymer-based composite steel pipe, but because the hardness of the wear-resistant layer matrix is low, the wear resistance of the composite steel pipe is insufficient in the using process, and the service life of the composite steel pipe is influenced.
The Chinese patent 201710771905.2 is made by compounding high-chromium cast iron on the inner surface of a seamless steel tube, and although the high-chromium cast iron material has higher hardness, the material has lower impact toughness, is easy to generate fatigue spalling and fracture in the use process, and has unsatisfactory use effect.
The chinese patent 201710738635.5 discloses a new titanium-steel composite steel pipe, the outer layer of which needs expensive tungsten and molybdenum elements, etc., and the production cost is high, thus affecting its popularization and application.
The invention provides a high-hardness and high-wear-resistance composite steel pipe which is formed by welding a high-carbon alloy steel and a low-carbon steel composite rolling steel plate coiled pipe, wherein the composite steel pipe is subjected to medium-frequency induction heating and is quenched by water-based quenching liquid, the hardness of the inner layer material of the obtained composite steel pipe reaches 60-66HRC, and the prepared composite steel pipe has high strength and toughness and excellent wear resistance.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-hardness and high-wear-resistance composite steel pipe which is divided into an inner layer material and an outer layer material, wherein the weight percentage of the inner layer material is C: 0.6% -0.7%; si: 0.2% -0.4%; mn: 2.5% -3.0%; cr: 0.7% -0.9%; ti: 0.2% -0.4%; v: 0.5% -0.7%; p is less than or equal to 0.02 percent; s is less than or equal to 0.02 percent; the outer layer is made of low-carbon steel with high toughness and good weldability.
The production process of the high-hardness and high-wear-resistance composite steel pipe comprises the following steps: electric furnace steelmaking, LF refining, die casting forming, cogging annealing, heating rolling, vacuum welding, composite rolling, reel pipe welding and heat treatment.
Preferably, the middle frequency after the coil pipe welding is heated to 865-905 ℃, then quenched by water-based quenching liquid, finally tempered at 180-200 ℃, and then insulated for 10-15 hours after tempering.
Preferably, the hardness of the inner steel plate is more than 60HRC, and the wear rate of the wear-resistant steel plate is less than or equal to 7.5 multiplied by 10-6mm3/N·m。
Compared with the prior art, the invention has the beneficial effects that: the wear-resistant steel pipe has higher toughness and excellent wear resistance, can meet the requirements of the wear resistance of composite steel pipes in mines, metallurgy and the like, reduces the frequency of replacing the steel pipes on site, and reduces the labor intensity of workers.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is further described below:
example 1
The weight percentage of the inner layer material components of the high-hardness and high-wear-resistance composite steel pipe is as follows; c: 0.6% -0.7%; si: 0.2% -0.4%; mn: 2.5% -3.0%; cr: 0.7% -0.9%; ti: 0.2% -0.4%; v: 0.5% -0.7%; p is less than or equal to 0.02 percent; s is less than or equal to 0.02 percent
The production process comprises the following steps: electric furnace steelmaking, LF refining, die casting forming, cogging annealing, heating rolling, vacuum welding, composite rolling, reel pipe welding and heat treatment.
Obtaining the following components after steel making: c: 0.61%; si: 0.33 percent; mn: 2.52 percent; cr: 0.73 percent; ti: 0.32 percent; v: 0.55 percent; p: 0.013%; s: 0.015 percent
Specifically, the coiled pipe is welded and then heated to 900 ℃ in medium frequency, then quenched by water-based quenching liquid, finally tempered at 185 ℃, and kept warm for 11 hours after tempering.
The hardness of the inner layer material of the obtained composite steel pipe is 61HRC, the wear performance test is carried out on an M-2000 multifunctional wear testing machine according to the national standard GB/T12444-2006, and the wear rate of the wear-resistant steel plate is 7.29 multiplied by 10-6mm3/N·m。
Example 2
The weight percentage of the inner layer material components of the high-hardness and high-wear-resistance composite steel pipe is C: 0.6% -0.7%; si: 0.2% -0.4%; mn: 2.5% -3.0%; cr: 0.7% -0.9%; ti: 0.2% -0.4%; v: 0.5% -0.7%; p is less than or equal to 0.02 percent; the production process of the compound with S less than or equal to 0.02 percent comprises the following steps: electric furnace steelmaking, LF refining, die casting forming, cogging annealing, heating rolling, vacuum welding, composite rolling, reel pipe welding and heat treatment.
Obtaining the following components after steel making: c: 0.64 percent; si: 0.28 percent; mn: 2.65 percent; cr: 0.79 percent; ti: 0.34 percent; v: 0.66 percent; p: 0.018%; s: 0.013%
Specifically, after the reel pipe is welded, the medium frequency is heated to 880 ℃, then the reel pipe is quenched by water-based quenching liquid, finally the reel pipe is tempered at 190 ℃, and the temperature is kept for 13 hours after the tempering.
The hardness of the inner layer material of the obtained composite steel pipe is 63HRC, the wear performance test is carried out on an M-2000 multifunctional wear testing machine according to the national standard GB/T12444-2006, and the wear rate of the wear-resistant steel plate is 6.83 multiplied by 10-6mm3/N·m。
Example 3
The weight percentage of the inner layer material components of the high-hardness and high-wear-resistance composite steel pipe is C: 0.6% -0.7%; si: 0.2% -0.4%; mn: 2.5% -3.0%; cr: 0.7% -0.9%; ti: 0.6% -0.9%; v: 0.7% -0.9%; p is less than or equal to 0.02 percent; the production process of the compound with S less than or equal to 0.02 percent comprises the following steps: electric furnace steelmaking, LF refining, die casting forming, cogging annealing, heating rolling, vacuum welding, composite rolling, reel pipe welding and heat treatment.
Obtaining the following components after steel making: c: 0.66 percent; si: 0.31 percent; mn: 2.75 percent; cr: 0.80 percent; ti: 0.33 percent; v: 0.56 percent; p: 0.019%; s: 0.014%;
specifically, the coiled pipe is welded and then heated to 868 ℃ by intermediate frequency, then quenched by water-based quenching liquid, finally tempered at 200 ℃, and kept warm for 15 hours after tempering.
The hardness of the inner layer material of the obtained composite steel pipe is 65HRC, the wear performance test is carried out on an M-2000 multifunctional wear testing machine according to the national standard GB/T12444-2006, and the wear rate of the wear-resistant steel plate is 6.64 multiplied by 10-6mm3/N·m。
Example 4
The weight percentage of the inner layer material components of the high-hardness and high-wear-resistance composite steel pipe is C: 0.6% -0.7%; si: 0.2% -0.4%; mn: 2.5% -3.0%; cr: 0.7% -0.9%; ti: 0.2% -0.4%; v: 0.5% -0.7%; p is less than or equal to 0.02 percent; the production process of the compound with S less than or equal to 0.02 percent comprises the following steps: electric furnace steelmaking, LF refining, die casting forming, cogging annealing, heating rolling, vacuum welding, composite rolling, reel pipe welding and heat treatment.
Obtaining the following components after steel making: c: 0.69%; si: 0.31 percent; mn: 2.80 percent; cr: 0.85 percent; ti: 0.35 percent; v: 0.68 percent; p: 0.018%; s: 0.013%
Specifically, after the reel pipe is welded, the medium frequency is heated to 875 ℃ and then quenched by water-based quenching liquid, finally tempered at 195 ℃, and the temperature is kept for 14 hours after tempering.
The hardness of the inner layer material of the obtained composite steel pipe is 66HRC, the wear performance test is carried out on an M-2000 multifunctional wear testing machine according to the national standard GB/T12444-2006, and the wear rate of the wear-resistant steel plate is 6.15 multiplied by 10-6mm3/N·m。
An M-2000 abrasive wear tester is adopted to detect the frictional wear performance, a sliding wear test is carried out according to the national standard GB/T12444-2006, the load is 200N, and the test time is 2 h. As shown in Table 1, the invention obtains the product by the optimized design of the element componentsThe hardness of the inner layer materials of the composite steel pipes of the four examples is more than 61HRC, and the wear rate is less than 7.29 multiplied by 10-6mm3N m, example 4 has the best performance, the hardness of the inner layer material is 66HRC, and the wear rate is 6.15 x 10-6mm3/N·m。
It should be noted that, in this document, moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Table 1 comparative properties of the examples
| Examples | Hardness (HRC) | Wear rate (10)-6mm3/N.m) |
| Example 1 | 61 | 7.29 |
| Example 2 | 63 | 6.83 |
| Example 3 | 65 | 6.64 |
| Example 4 | 66 | 6.15 |
Claims (3)
1. The high-hardness and high-wear-resistance composite steel pipe is characterized in that the high-wear-resistance composite steel pipe is formed by welding composite steel plate reel pipes, wherein the weight percentage of the inner layer material of the composite steel pipe is C: 0.6% -0.7%; si: 0.2% -0.4%; mn: 2.5% -3.0%; cr: 0.7% -0.9%; ti: 0.2% -0.4%; v: 0.5% -0.7%; p is less than or equal to 0.02 percent; s is less than or equal to 0.02 percent; the outer layer of the composite steel pipe is made of low-carbon steel with higher toughness and good weldability.
The production process of the high-hardness and high-wear-resistance composite steel pipe comprises the following steps: electric furnace steelmaking, LF refining, die casting forming, cogging annealing, heating rolling, vacuum welding, composite rolling, reel pipe welding and heat treatment.
2. The high-hardness and high-wear-resistance composite steel pipe as claimed in claim 1, wherein the composite steel plate is formed by reel pipe welding, is heated to 865-905 ℃ by medium frequency induction, is quenched by water-based quenching liquid, is finally tempered at 180-200 ℃, and is kept warm for 10-15 hours after tempering.
3. The high-hardness and high-wear-resistance composite steel pipe as claimed in claim 1, wherein the hardness of the inner layer material of the composite steel pipe is greater than 60HRC, and the sliding wear rate under dry friction is less than or equal to 7.5 x 10-6mm3/N·m。
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| CN201911333512.9A CN110983185A (en) | 2019-12-23 | 2019-12-23 | High-hardness and high-wear-resistance composite steel pipe |
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| CN201911333512.9A CN110983185A (en) | 2019-12-23 | 2019-12-23 | High-hardness and high-wear-resistance composite steel pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575608A (en) * | 2020-05-31 | 2020-08-25 | 吴玉玲 | High-strength corrosion-resistant steel pipe and preparation method thereof |
| CN114395666A (en) * | 2021-12-31 | 2022-04-26 | 安徽华聚新材料有限公司 | Quenching process of bimetal composite lining plate |
| CN114425621A (en) * | 2022-01-17 | 2022-05-03 | 甘肃金泽川增材制造有限公司 | Wear-resisting pipeline of alloy vibration material disk |
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| JPH05163529A (en) * | 1991-12-11 | 1993-06-29 | Nippon Steel Corp | Manufacture of multi-layered welded steel tube superior in high temperature corrosion resistance |
| CN102182874A (en) * | 2011-05-20 | 2011-09-14 | 唐勇 | Bimetal mechanical composite wear-resistant steel tube and production method thereof |
| CN107143702A (en) * | 2017-04-28 | 2017-09-08 | 杰森能源技术有限公司 | A kind of economical bimetal coiled tubing of high performance corrosion-proof and its manufacture method |
| US20180313471A1 (en) * | 2015-10-21 | 2018-11-01 | Salzgitter Flachstahl Gmbh | Composite pipe comprised of a carrier pipe and at least one protective pipe, and method for the production thereof |
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2019
- 2019-12-23 CN CN201911333512.9A patent/CN110983185A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05163529A (en) * | 1991-12-11 | 1993-06-29 | Nippon Steel Corp | Manufacture of multi-layered welded steel tube superior in high temperature corrosion resistance |
| CN102182874A (en) * | 2011-05-20 | 2011-09-14 | 唐勇 | Bimetal mechanical composite wear-resistant steel tube and production method thereof |
| US20180313471A1 (en) * | 2015-10-21 | 2018-11-01 | Salzgitter Flachstahl Gmbh | Composite pipe comprised of a carrier pipe and at least one protective pipe, and method for the production thereof |
| CN107143702A (en) * | 2017-04-28 | 2017-09-08 | 杰森能源技术有限公司 | A kind of economical bimetal coiled tubing of high performance corrosion-proof and its manufacture method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575608A (en) * | 2020-05-31 | 2020-08-25 | 吴玉玲 | High-strength corrosion-resistant steel pipe and preparation method thereof |
| CN114395666A (en) * | 2021-12-31 | 2022-04-26 | 安徽华聚新材料有限公司 | Quenching process of bimetal composite lining plate |
| CN114425621A (en) * | 2022-01-17 | 2022-05-03 | 甘肃金泽川增材制造有限公司 | Wear-resisting pipeline of alloy vibration material disk |
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