CN103624490B - A kind of processing method of bimetal composite single-weld-seam bend - Google Patents
A kind of processing method of bimetal composite single-weld-seam bend Download PDFInfo
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- CN103624490B CN103624490B CN201310589764.4A CN201310589764A CN103624490B CN 103624490 B CN103624490 B CN 103624490B CN 201310589764 A CN201310589764 A CN 201310589764A CN 103624490 B CN103624490 B CN 103624490B
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- elbow
- weld
- layer
- seam
- compacting
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- 239000002131 composite material Substances 0.000 title claims abstract description 13
- 238000003672 processing method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 19
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 12
- 239000010962 carbon steel Substances 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 3
- 239000003345 natural gas Substances 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 24
- 230000007547 defect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention relates to for natural-gas transfer pipeline equipment technical field, the processing method especially relating to a kind of bimetal composite single-weld-seam bend.Being characterized in the carbon steel outer layer of elbow and Ni-based steel plate internal layer by being compressed to elbow structure after being pressed into single compound steel pipe of weld seam again, single weld seam is arranged on inner arc central side.It adopts composite plate steel pipe pressing process, respectively through preliminary examination compacting, flattening process, process without heart compacting, end machining flat mouth, heat treatment and finishing, ensure that the erosion-resisting stability of the laminating layer of alloy, welding job moves to when making straight tube and realizes automatic welding, and production efficiency is high.
Description
Technical field
The present invention relates to for natural-gas transfer pipeline equipment technical field, the processing method especially relating to a kind of bimetal composite single-weld-seam bend.
Background technology
Substantial amounts of hydrogen sulfide is contained in the domestic portion of natural gas gas field being developed, conveyance conduit when its artesian well station to Gas Purification Factory is carried is one of the most dangerous gathering line, is generally adopted monolayer nickel-base material and is fabricated by, and its structure is single, expensive, corrosion-resistant.Being generally adopted overlaying method in prior art and make pipe fitting, production efficiency is low, and welding job amount is big, and Ni-based laminating layer quality is unstable.Product built-up welding can cause the alloy material of binder course to dilute, and the instability of alloying element composition causes anti-corrosion effects to reduce, and product quality is unreliable.Production efficiency is low simultaneously, and manufacturing cost is higher.
Summary of the invention
It is an object of the invention to avoid the prior art course of processing complicated, the processing method that the defect that productivity ratio is low provides a kind of bimetal composite single-weld-seam bend.Thus effectively solving the defect existed in prior art.
For achieving the above object, the technical scheme that the present invention takes is: the processing method of described bimetal composite single-weld-seam bend, and the elbow being characterized in described includes carbon steel outer layer and Ni-based steel plate internal layer, also includes following procedure of processing:
1) initially compacting: adopt elbow tube pressed mould to carry out first time compacting, weld seam should be placed in inner arc side, during lifting, suspender and the frock with inner layer contacts will weld one layer of stainless steel layer on surface in the way of argon arc welding, elbow inner support inner core and key, end adopts disk to support, and is pressed into pipe fitting；
2) flattening process: the pipe fitting initially suppressed is flattened, it is ensured that big 5 millimeters of width ratio pipe fitting final finished external diameter after flattening, and consistent with tube pressed mould internal diameter, leave surplus for reducing；
3) suppress without inner core: utilizing forming mould to carry out in a heated state suppressing without inner core, after compacting, formed product is better, and each position Reducing thickness is little, it is ensured that the inner arc of elbow and outer arc minimum wall thickness (MINI W.)；
4) line: the end surplus of elbow is cut, controls cutting surplus less than or equal to 10 millimeters；
5) end machining flat mouth: utilizing lathe that end is carried out flat mouth process, after processing, surplus is 3-5 millimeter；
6) heat treatment: adopt Quenching Treatment, adopts the steel plate of the 3 millimeters two ends solder up to elbow before quenching, it is ensured that carbon steel outer layer and Ni-based steel plate internal layer corrosion resistance；
7) end finishing: inner end diameter adds normal disc, with round mouth tire, end is compressed, makes internal diameter ensure the tolerance of 0.5 millimeter；
8) end retaining wall on slope: elbow ends is carried out beveling machine processing and by internal diameter centering and machine bevel for welding；
9) surface finish processes: with fabric disc, inner surface of pipe fitting is processed by shot blasting, outer surface grinder buffing.
The carbon steel outer layer of described elbow and Ni-based steel plate internal layer are by being compressed to elbow structure after being compressed to single compound steel pipe of weld seam, single weld seam is arranged on inner arc central side.
The invention has the beneficial effects as follows: the processing method of described bimetal composite single-weld-seam bend, it is composite structured by employing carbon steel outer layer and Ni-based steel plate internal layer and adopts composite plate steel pipe pressing process, respectively through preliminary examination compacting, flattening process, process without heart compacting, end machining flat mouth, heat treatment and finishing, ensure that the erosion-resisting stability of the laminating layer of alloy, welding job moves to when making straight tube and realizes automatic welding, and production efficiency is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is present configuration principle schematic；
Fig. 2 is the left view structural representation of Fig. 1 of the present invention.
In figure: 1. carbon steel outer layer；2. Ni-based steel plate internal layer；3. single weld seam.
Detailed description of the invention
Below in conjunction with accompanying drawing, principles of the invention and feature being described, example is served only for explaining the present invention, is not intended to limit the scope of the present invention.
As illustrated in fig. 1 and 2, the processing method of described bimetal composite single-weld-seam bend, the elbow being characterized in described includes carbon steel outer layer and Ni-based steel plate internal layer, also includes following procedure of processing:
1) initially compacting: adopt elbow tube pressed mould to carry out first time compacting, weld seam should be placed in inner arc side, during lifting, suspender and the frock with inner layer contacts will weld one layer of stainless steel layer on surface in the way of argon arc welding, elbow inner support inner core and key, end adopts disk to support, and is pressed into pipe fitting；
2) flattening process: the pipe fitting initially suppressed is flattened, it is ensured that big 5 millimeters of width ratio pipe fitting final finished external diameter after flattening, and consistent with tube pressed mould internal diameter, leave surplus for reducing；
3) suppress without inner core: utilizing forming mould to carry out in a heated state suppressing without inner core, after compacting, formed product is better, and each position Reducing thickness is little, it is ensured that the inner arc of elbow and outer arc minimum wall thickness (MINI W.)；
4) line: the end surplus of elbow is cut, controls cutting surplus less than or equal to 10 millimeters；
5) end machining flat mouth: utilizing lathe that end is carried out flat mouth process, after processing, surplus is 3-5 millimeter；
6) heat treatment: adopt Quenching Treatment, adopts the steel plate of the 3 millimeters two ends solder up to elbow before quenching, it is ensured that carbon steel outer layer and Ni-based steel plate internal layer corrosion resistance；
7) end finishing: inner end diameter adds normal disc, with round mouth tire, end is compressed, makes internal diameter ensure the tolerance of 0.5 millimeter；
8) end retaining wall on slope: elbow ends is carried out beveling machine processing and by internal diameter centering and machine bevel for welding；
9) surface finish processes: with fabric disc, inner surface of pipe fitting is processed by shot blasting, outer surface grinder buffing.
Further, the carbon steel outer layer 1 of described elbow and Ni-based steel plate internal layer 2 are by being compressed to elbow structure after being compressed to single compound steel pipe of weld seam, single weld seam 3 is arranged on inner arc central side.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (2)
1. a processing method for bimetal composite single-weld-seam bend, is characterized in that described elbow includes carbon steel outer layer and Ni-based steel plate internal layer, also includes following procedure of processing:
1) initially compacting: adopt elbow tube pressed mould to carry out first time compacting, weld seam should be placed in inner arc side, during lifting, suspender and the frock with inner layer contacts will weld one layer of stainless steel layer on surface in the way of argon arc welding, elbow inner support inner core and key, end adopts disk to support, and is pressed into pipe fitting；
2) flattening process: the pipe fitting initially suppressed is flattened, it is ensured that big 5 millimeters of width ratio pipe fitting final finished external diameter after flattening, and consistent with tube pressed mould internal diameter, leave surplus for reducing；
3) suppress without inner core: utilizing forming mould to carry out in a heated state suppressing without inner core, after compacting, formed product is better, and each position Reducing thickness is little, it is ensured that the inner arc of elbow and outer arc minimum wall thickness (MINI W.)；
4) line: the end surplus of elbow is cut, controls cutting surplus less than or equal to 10 millimeters；
5) end machining flat mouth: utilizing lathe that end is carried out flat mouth process, after processing, surplus is 3-5 millimeter；
6) heat treatment: adopt Quenching Treatment, adopts the steel plate of the 3 millimeters two ends solder up to elbow before quenching, it is ensured that carbon steel outer layer and Ni-based steel plate internal layer corrosion resistance；
7) end finishing: inner end diameter adds normal disc, with round mouth tire, end is compressed, makes internal diameter ensure the tolerance of 0.5 millimeter；
8) end retaining wall on slope: elbow ends is carried out beveling machine processing and by internal diameter centering and machine bevel for welding；
9) surface finish processes: with fabric disc, inner surface of pipe fitting is processed by shot blasting, outer surface grinder buffing.
2. the processing method of a kind of bimetal composite single-weld-seam bend as claimed in claim 1, it is characterized in that: the carbon steel outer layer of described elbow and Ni-based steel plate internal layer are by being compressed to elbow structure after being compressed to single compound steel pipe of weld seam, single weld seam is arranged on inner arc central side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589764.4A CN103624490B (en) | 2013-11-22 | 2013-11-22 | A kind of processing method of bimetal composite single-weld-seam bend |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589764.4A CN103624490B (en) | 2013-11-22 | 2013-11-22 | A kind of processing method of bimetal composite single-weld-seam bend |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103624490A CN103624490A (en) | 2014-03-12 |
| CN103624490B true CN103624490B (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310589764.4A Active CN103624490B (en) | 2013-11-22 | 2013-11-22 | A kind of processing method of bimetal composite single-weld-seam bend |
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| CN (1) | CN103624490B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398669B (en) * | 2017-08-30 | 2023-08-25 | 福龙马集团股份有限公司 | Welding tool for rear framework of dustbin |
| CN111375990A (en) * | 2018-12-29 | 2020-07-07 | 上海新闵重型锻造有限公司 | Manufacturing method of S-shaped elbow |
| CN110509002B (en) * | 2019-05-31 | 2021-03-26 | 东方电气集团东方锅炉股份有限公司 | Machining process of upper pipe joint of circular bent pipe |
| CN111088419B (en) * | 2019-12-09 | 2022-04-12 | 河北亚都管道装备集团有限公司 | Manufacturing method of large-caliber thick-wall seamless hot-pressing elbow of 630 ℃ ultra-supercritical unit G115 and elbow |
| CN110788581A (en) * | 2019-12-10 | 2020-02-14 | 昆山新莱洁净应用材料股份有限公司 | Manufacturing method of elbow |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1038404A (en) * | 1962-06-19 | 1966-08-10 | Plessey Co Ltd | Improvements in or relating to the manufacture of curved tube members |
| DE2914725C2 (en) * | 1979-04-11 | 1987-09-03 | Interatom Gmbh, 5060 Bergisch Gladbach, De | |
| US5491883A (en) * | 1994-12-19 | 1996-02-20 | Ap Parts Manufacturing Co. | Method of manufacturing a non-linear composite tube |
| CN101344204A (en) * | 2008-06-17 | 2009-01-14 | 杨文俊 | Jib composite abrasion-proof elbow of concrete pump vehicle |
| CN102563226A (en) * | 2012-01-11 | 2012-07-11 | 中联重科股份有限公司 | Three-layer composite structure S valve and manufacturing method of three-layer composite structure S valve |
| CN102794601A (en) * | 2011-05-23 | 2012-11-28 | 周照耀 | Method for manufacturing wear-resistant, corrosion-resistant and impact-resistant double-metal composite bend pipe |
-
2013
- 2013-11-22 CN CN201310589764.4A patent/CN103624490B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1038404A (en) * | 1962-06-19 | 1966-08-10 | Plessey Co Ltd | Improvements in or relating to the manufacture of curved tube members |
| DE2914725C2 (en) * | 1979-04-11 | 1987-09-03 | Interatom Gmbh, 5060 Bergisch Gladbach, De | |
| US5491883A (en) * | 1994-12-19 | 1996-02-20 | Ap Parts Manufacturing Co. | Method of manufacturing a non-linear composite tube |
| CN101344204A (en) * | 2008-06-17 | 2009-01-14 | 杨文俊 | Jib composite abrasion-proof elbow of concrete pump vehicle |
| CN102794601A (en) * | 2011-05-23 | 2012-11-28 | 周照耀 | Method for manufacturing wear-resistant, corrosion-resistant and impact-resistant double-metal composite bend pipe |
| CN102563226A (en) * | 2012-01-11 | 2012-07-11 | 中联重科股份有限公司 | Three-layer composite structure S valve and manufacturing method of three-layer composite structure S valve |
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| Publication number | Publication date |
|---|---|
| CN103624490A (en) | 2014-03-12 |
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A processing method of bimetal composite single-weld elbow Effective date of registration: 20230223 Granted publication date: 20160720 Pledgee: China Construction Bank Corporation Cangzhou Development Zone Sub-branch Pledgor: CANGZHOU LONGTAIDI PIPE TECHNOLOGY Co.,Ltd. Registration number: Y2023110000074 |
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Date of cancellation: 20231019 Granted publication date: 20160720 Pledgee: China Construction Bank Corporation Cangzhou Development Zone Sub-branch Pledgor: CANGZHOU LONGTAIDI PIPE TECHNOLOGY Co.,Ltd. Registration number: Y2023110000074 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A processing method for bimetallic composite single weld elbow Granted publication date: 20160720 Pledgee: China Construction Bank Corporation Cangzhou Development Zone Sub-branch Pledgor: CANGZHOU LONGTAIDI PIPE TECHNOLOGY Co.,Ltd. Registration number: Y2024110000109 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |