CN103624490A - Method for machining bimetal composite single-weld-seam bend - Google Patents
Method for machining bimetal composite single-weld-seam bend Download PDFInfo
- Publication number
- CN103624490A CN103624490A CN201310589764.4A CN201310589764A CN103624490A CN 103624490 A CN103624490 A CN 103624490A CN 201310589764 A CN201310589764 A CN 201310589764A CN 103624490 A CN103624490 A CN 103624490A
- Authority
- CN
- China
- Prior art keywords
- elbow
- weld seam
- processing
- steel plate
- compacting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 238000003754 machining Methods 0.000 title abstract 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 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
- 238000005260 corrosion Methods 0.000 claims abstract description 6
- 230000007797 corrosion Effects 0.000 claims abstract description 5
- 238000003672 processing method Methods 0.000 claims description 8
- 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
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000005498 polishing Methods 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
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 238000003825 pressing Methods 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 3
- 239000003345 natural gas Substances 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010030 laminating Methods 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
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Images
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
Abstract
The invention relates to the technical field of natural gas conveying pipeline equipment, in particular to a method for machining a bimetal composite single-weld-seam bend. The method is characterized in that a carbon steel outer layer and a nickel-based steel plate inner layer are pressed to form a single-weld-seam composite steel tube and then pressed into a bend structure, and a single weld seam is arranged on the center side of an inner arc. By the adoption of the composite plate steel tube pressing process, primary pressing, the flattening process, no-center pressing, end portion machining flattening, thermal processing and finishing processing are carried out, so that stability of corrosion resistance of an alloy covering layer is guaranteed, automatic welding is achieved when welding work is transferred to straight tube manufacturing, and production efficiency is high.
Description
Technical field
The present invention relates to for natural-gas transfer pipeline equipment technical field, especially relate to a kind of processing method of bimetal composite list weld seam elbow.
Background technology
A large amount of hydrogen sulfide is contained in the domestic part natural gas field being developed out, conveyance conduit when its artesian well station to Gas Purification Factory is carried is one of the most dangerous gathering line, generally adopts the manufacture of individual layer nickel-base material to form, and its structure is single, expensive, corrosion-resistant.In prior art, the general overlaying method that adopts is made pipe fitting, and production efficiency is low, and welding job amount is large, and Ni-based laminating layer quality is unstable.Product built-up welding meeting causes the alloy material dilution of binder course, and the unstable anti-corrosion effects that causes of alloying element composition reduces, and product quality is unreliable.Production efficiency is low simultaneously, and manufacturing cost is higher.
Summary of the invention
The object of the invention is to avoid prior art process complicated, the defect that productivity ratio is low provides a kind of processing method of bimetal composite list weld seam elbow.Thereby effectively solve the defect existing in prior art.
For achieving the above object, the technical scheme that the present invention takes is: the processing method of described bimetal composite list weld seam elbow, is characterized in that described elbow comprises carbon steel skin and Ni-based steel plate internal layer, also comprises following procedure of processing:
1) initially compacting: adopt elbow tube pressed mould to suppress for the first time, weld seam should be placed in inner arc side, during lifting, suspender and the frock contacting with internal layer all will be welded one deck stainless steel layer in the mode of argon arc welding on surface, elbow inner support inner core and key, end adopts disk to support, and is pressed into pipe fitting;
2) flattening process: the pipe fitting of initially compacting is flattened, large 5 millimeters than pipe fitting final finished external diameter of the width after assurance is flattened, and consistent with tube pressed mould internal diameter, for reducing leaves surplus;
3) without inner core, suppress: utilize forming mould under heated condition, to carry out without inner core compacting, after compacting, formed product is better, and each position attenuate amount is little, guarantees inner arc and the outer arc minimum wall thickness (MINI W.) of elbow;
4) line: the end surplus to elbow is cut, controls cutting surplus and is less than or equal to 10 millimeters;
5) end machined flat mouth: utilize lathe to carry out flat mouth processing to end, after processing, surplus is 3-5 millimeter;
6) heat treatment: adopt Quenching Treatment, adopt the steel plate of the 3 millimeters two ends solder up to elbow before quenching, the outer and Ni-based steel plate internal layer corrosion resistance of the carbon steel that guaranteed;
7) end finishing: inner end diameter adds normal disc, compresses end with round mouth tire, makes internal diameter guarantee the tolerance of 0.5 millimeter;
8) end groove processing: elbow ends is carried out beveling machine processing and adds bevel for welding by the parallel operation of internal diameter centering;
9) surface finish is processed: with fabric disc, inner surface of pipe fitting is carried out to polishing, outer surface grinder buffing.
Carbon steel skin and the Ni-based steel plate internal layer of described elbow are compressed to elbow structure after being compressed to the compound steel pipe of single weld seam, and 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 list weld seam elbow, by adopting, carbon steel is outer and Ni-based steel plate internal layer is composite structured and adopt composite plate steel pipe pressing process processed for it, respectively by preliminary examination compacting, flattening process, process without heart compacting, end machined flat mouth, heat treatment and finishing, guaranteed the erosion-resisting stability of the laminating layer of alloy, welding job moves to while 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 structural principle schematic diagram of the present invention;
Fig. 2 is the left TV structure schematic diagram of Fig. 1 of the present invention.
In figure: 1. carbon steel is outer; 2. Ni-based steel plate internal layer; 3. single weld seam.
The specific embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As illustrated in fig. 1 and 2, the processing method of described bimetal composite list weld seam elbow, is characterized in that described elbow comprises carbon steel skin and Ni-based steel plate internal layer, also comprises following procedure of processing:
1) initially compacting: adopt elbow tube pressed mould to suppress for the first time, weld seam should be placed in inner arc side, during lifting, suspender and the frock contacting with internal layer all will be welded one deck stainless steel layer in the mode of argon arc welding on surface, elbow inner support inner core and key, end adopts disk to support, and is pressed into pipe fitting;
2) flattening process: the pipe fitting of initially compacting is flattened, large 5 millimeters than pipe fitting final finished external diameter of the width after assurance is flattened, and consistent with tube pressed mould internal diameter, for reducing leaves surplus;
3) without inner core, suppress: utilize forming mould under heated condition, to carry out without inner core compacting, after compacting, formed product is better, and each position attenuate amount is little, guarantees inner arc and the outer arc minimum wall thickness (MINI W.) of elbow;
4) line: the end surplus to elbow is cut, controls cutting surplus and is less than or equal to 10 millimeters;
5) end machined flat mouth: utilize lathe to carry out flat mouth processing to end, after processing, surplus is 3-5 millimeter;
6) heat treatment: adopt Quenching Treatment, adopt the steel plate of the 3 millimeters two ends solder up to elbow before quenching, the outer and Ni-based steel plate internal layer corrosion resistance of the carbon steel that guaranteed;
7) end finishing: inner end diameter adds normal disc, compresses end with round mouth tire, makes internal diameter guarantee the tolerance of 0.5 millimeter;
8) end groove processing: elbow ends is carried out beveling machine processing and adds bevel for welding by the parallel operation of internal diameter centering;
9) surface finish is processed: with fabric disc, inner surface of pipe fitting is carried out to polishing, outer surface grinder buffing.
Further, the carbon steel of described elbow outer 1 and Ni-based steel plate internal layer 2 are compressed to elbow structure after being compressed to the compound steel pipe of single weld seam, and single weld seam 3 is arranged on inner arc central side.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. a processing method for bimetal composite list weld seam elbow, is characterized in that described elbow comprises the outer and Ni-based steel plate internal layer of carbon steel, also comprises following procedure of processing:
1) initially compacting: adopt elbow tube pressed mould to suppress for the first time, weld seam should be placed in inner arc side, during lifting, suspender and the frock contacting with internal layer all will be welded one deck stainless steel layer in the mode of argon arc welding on surface, elbow inner support inner core and key, end adopts disk to support, and is pressed into pipe fitting;
2) flattening process: the pipe fitting of initially compacting is flattened, large 5 millimeters than pipe fitting final finished external diameter of the width after assurance is flattened, and consistent with tube pressed mould internal diameter, for reducing leaves surplus;
3) without inner core, suppress: utilize forming mould under heated condition, to carry out without inner core compacting, after compacting, formed product is better, and each position attenuate amount is little, guarantees inner arc and the outer arc minimum wall thickness (MINI W.) of elbow;
4) line: the end surplus to elbow is cut, controls cutting surplus and is less than or equal to 10 millimeters;
5) end machined flat mouth: utilize lathe to carry out flat mouth processing to end, after processing, surplus is 3-5 millimeter;
6) heat treatment: adopt Quenching Treatment, adopt the steel plate of the 3 millimeters two ends solder up to elbow before quenching, the outer and Ni-based steel plate internal layer corrosion resistance of the carbon steel that guaranteed;
7) end finishing: inner end diameter adds normal disc, compresses end with round mouth tire, makes internal diameter guarantee the tolerance of 0.5 millimeter;
8) end groove processing: elbow ends is carried out beveling machine processing and adds bevel for welding by the parallel operation of internal diameter centering;
9) surface finish is processed: with fabric disc, inner surface of pipe fitting is carried out to polishing, outer surface grinder buffing.
2. the processing method of a kind of bimetal composite list weld seam elbow as claimed in claim 1, it is characterized in that: carbon steel skin and the Ni-based steel plate internal layer of described elbow are compressed to elbow structure after being compressed to the compound steel pipe of single weld seam, and 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 true CN103624490A (en) | 2014-03-12 |
| CN103624490B CN103624490B (en) | 2016-07-20 |
Family
ID=50206129
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103624490B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398669A (en) * | 2017-08-30 | 2017-11-28 | 福建龙马环卫装备股份有限公司 | A kind of welding tooling for dustbin back skeleton |
| CN110509002A (en) * | 2019-05-31 | 2019-11-29 | 东方电气集团东方锅炉股份有限公司 | The processing technology of pipe fitting on circular ring shape bend pipe |
| 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 |
| CN111088419A (en) * | 2019-12-09 | 2020-05-01 | 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 |
| 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 |
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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398669A (en) * | 2017-08-30 | 2017-11-28 | 福建龙马环卫装备股份有限公司 | A kind of welding tooling for dustbin back skeleton |
| 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 |
| CN110509002A (en) * | 2019-05-31 | 2019-11-29 | 东方电气集团东方锅炉股份有限公司 | The processing technology of pipe fitting on circular ring shape bend pipe |
| CN111088419A (en) * | 2019-12-09 | 2020-05-01 | 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103624490B (en) | 2016-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103624490B (en) | A kind of processing method of bimetal composite single-weld-seam bend | |
| CN102240894A (en) | Composite manufacturing method of ultra-thick steel plate | |
| CN104014997A (en) | Manufacturing method for stainless steel composite boards | |
| CN103706921A (en) | Build up welding repair method of supporting roller of hot continuous rolling finishing mill | |
| CN102756242A (en) | Method for welding carbon steel heads | |
| CN103157959A (en) | Preparation method for stainless steel clad plate | |
| CN103692166A (en) | Preparation method of super-thick alloy steel plate | |
| CN103521899A (en) | Welding method for manufacturing composite pipe through composite plate | |
| CN112475787B (en) | Preparation method of large-wall-thickness stainless steel/carbon steel laminated structure composite pipe | |
| CN109128714B (en) | Hot continuous rolling large-scale preparation method of stainless steel-carbon steel composite plate | |
| CN105033417A (en) | X80 steel pipe welding process | |
| CN205349236U (en) | Spout type laser welding diamond bit at bottom of major -minor | |
| CN106270935A (en) | A kind of repair method of centrifugal compound roll axle surface defect | |
| CN103600212A (en) | Machining method for welding gear | |
| CN102794541A (en) | Welding process of composite pipeline | |
| CN109202229A (en) | Two electrodes tandemarc method for welding pipeline | |
| CN106624614B (en) | A kind of manufacturing process of the high-strength welded tube of heavy caliber thick wall | |
| CN102152076A (en) | Process method for manufacturing hot-pressing thick-wall tee joint by performing automatic submerged arc welding on X80-grade steel plate | |
| CN102151936B (en) | Grind shoe manufacture method and tool | |
| CN104439672A (en) | High frequency prewelding technology of longitudinal submerged arc welded pipe | |
| CN104439589B (en) | A kind of junk mill frock and its manufacturing process | |
| CN103231224B (en) | The method of straight tube tube blank inner wall built-up welding aftershaping 90 ° of bend pipes | |
| CN110778804A (en) | Oil and gas conveying pipe and manufacturing method thereof | |
| CN201960303U (en) | Manufacture of tooling wear shoes | |
| CN102218648B (en) | Machining method for large caliber stainless steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| 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 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
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 |
|
| 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 |