CN102489941A - Method for manufacturing metal elbow - Google Patents
Method for manufacturing metal elbow Download PDFInfo
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- CN102489941A CN102489941A CN2011103826147A CN201110382614A CN102489941A CN 102489941 A CN102489941 A CN 102489941A CN 2011103826147 A CN2011103826147 A CN 2011103826147A CN 201110382614 A CN201110382614 A CN 201110382614A CN 102489941 A CN102489941 A CN 102489941A
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- flitch
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- elbow
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Abstract
The invention provides a method for manufacturing a metal elbow. The method is characterized by comprising the steps of: S1, feeding: cutting a metal flitch into a circular flitch and machining a circular internal hole in the flitch; S2, initial machining: initially machining the circumferences of the flitch and the internal hole; S3, punch forming: carrying out punch forming on the initially-machined flitch to form a semi-circular groove; S4, splicing and welding of two punch-formed flitches to form a circular metal tube; and S5, cutting of the metal tube into needed elbows. The method for manufacturing the metal elbow, provided by the invention, solves the technical problem that the metal elbows made of some materials of special marks cannot be manufactured directly by tubes. The metal elbow obtained by using the manufacturing method is applied more widely and can better match with welding objects made of some special materials and has high welding intensity and good welding performance.
Description
Technical field
The present invention relates to the manufacturing technology field, especially, relate to a kind of preparation method of metal bends.
Background technology
In order to reduce " T formula " temperature of gas turbine, need weld the number of metal elbow at the exhaust section of gas turbine as induction tunnel.Part with the metal bends welding on exhaust section is particulate metal material, like 1Cr18MnNi5N.At present preparation metal bends material commonly used is: 20#, 45#, Q235-A, 1Cr18Ni9Ti, 0Cr18Ni9,1Cr13 etc., and by the metal pipe material drawing of respective material.But the metal pipe material of some special materials can't have been bought, like the metal pipe material of 1Cr18MnNi5N material, so corresponding elbow just can't prepare.And because material is different, the present metal bends and the welding portion of exhaust section are difficult to fusion, and welding performance is poor.And induction tunnel is owing to be operated in the adverse circumstances of high temperature for a long time, and less than six months, the weld ell major part will come off, and has both increased use cost greatly, has also brought inconvenience to production.
Summary of the invention
The object of the present invention is to provide a kind of any trade mark materials limitations that do not receive; Also be not limited to the preparation method that adopts metal pipe material to make metal bends; And make the preparation method of metal bends with plate, the technical problem that can't make with the elbow that solves some particulate metal materials.
Be to realize above-mentioned purpose, the invention provides a kind of preparation method of metal bends, this method comprises the steps: step S1: blanking, metal flitch cutting stock is become the flitch of a circle, and in flitch, process the endoporus of a circle.Step S2: preparatory processing, the circumferential edge of flitch and endoporus is carried out preparatory processing.Step S3: punch forming is a semicircular groove with the flitch punch forming after the preparatory processing.Step S4: with the metal tube of splicing of the flitch after two punch formings and welding formation annular.Step S5: with the elbow of cuts in metallic pipe formation needs.
Further, step S2 makes the roughness of the circumferential edge of flitch and endoporus be 6.3.
Further, the concrete steps of step S4 are following:
The semicircular groove of the flitch of the punch forming gained of two same sizes alignd each other weld behind the butt, to form the metal tube among the step S4.
Further, step S4 welds and forms two relative weld seams on the metal tube that forms, and also comprises between step S4 and the step S5 processed steps S40 is carried out on the surface of two weld seams.
Further, step S40 comprises: butt welded seam is polished, polished surface is handled, and is 6.3 with the surface roughness of the metal tube that guarantees annular.
Further, the concrete steps of step S3 are following: at first, the inner hole sleeve of flitch is located on the positioner of mould; Secondly, through mould punching press flitch to form semicircular groove.
Further, among the step S5, be two or more elbows with cuts in metallic pipe.
Further, among the step S5, it is 90 ° elbow bend that metal tube is cut into four central angles.
The present invention has following beneficial effect: a kind of preparation method of making metal bends provided by the invention; The method does not receive any trade mark materials limitations; Also be not limited to and adopt metal pipe material to be used as raw-material processing and fabricating method; Thereby well solved the elbow of some particulate metal materials, like 1Cr18MnNi5N, the technical problem that can't make.
Except top described purpose, feature and advantage, the present invention also has other purpose, feature and advantage.To do further detailed explanation to the present invention with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of preparation method of the metal bends of the preferred embodiment of the present invention;
Fig. 2 is that the central angle of the preferred embodiment of the present invention is the front view of 90 ° elbow bend;
Fig. 3 is the metal flitch sketch map after the processing of the preferred embodiment of the present invention;
Fig. 4 is the semicircular groove cutaway view of the preferred embodiment of the present invention;
Fig. 5 is the cutaway view of metal tube of the annular of the preferred embodiment of the present invention; And
Fig. 6 is that four central angles of the preferred embodiment of the present invention are 90 ° elbow bend sketch map.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
See figures.1.and.2, the preparation method of metal bends of the present invention at first is that metal ring flitch 4 is carried out punch process, to form the groove 10 of annular; The groove 10 that again two sizes is equated splices to form the metal tube 100 of annular; The last elbow that as required metal tube 100 of this annular is cut into circular arc again is to form metal bends 1.This metal bends 1 comprises the external diameter 2 of circular arc and the internal diameter 3 of circular arc.
The preparation method concrete steps of this metal bends are following:
Step S1: blanking.
In conjunction with Fig. 3, metal flitch cutting stock is become the flitch 4 of a circle, in flitch 4, process the endoporus 5 of a circle.Wherein, flitch 4 is concentric with endoporus 5, and cross straight line and the flitch 4 in the center of circle, the intersection point of endoporus 5 is followed successively by 20,30,31,21.
Step S2: preparatory processing.
Step S3: punch forming.
At first, the flitch after the preparatory processing 4 is positioned on the mould, preferably, the endoporus 5 in the flitch 4 can be set on the positioner of mould with flitch 4 location, so that to flitch 4 processing.Secondly, after flitch 4 is had good positioning, through mould punching press flitch 4, so that flitch 4 punching presses are formed a semicircular groove 10.
Fig. 4 is the cutaway view after this flitch 4 is stamped.Please combine referring to Fig. 4, the point 30 of the flitch 4 after the punch forming equals the size of this elbow internal diameter 3 to point 31 distance, and point 20 equals the size of this elbow external diameter 2 to the distances of putting 21.
Step S4: with semicircular groove 10 splicing and the welding each other of the flitch 4 of the punch forming gained of two same sizes, to form the metal tube 100 of annular.At this moment, the metal tube 100 of annular has formed two relative weld seams in 10 splicing butt welding place of two grooves.Step S4 also comprises step S40,
Step S40: two relative weld seams are polished, and polished surface is handled, and makes metal tube 100 surfacings of annular, no burr.Simultaneously, the surface roughness of the metal tube 100 of assurance annular is 6.3.
Step S5: the metal tube 100 of annular is cut the elbow that formation need.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the preparation method of a metal bends is characterized in that, comprising:
Step S1: blanking, metal flitch cutting stock is become the flitch (4) of a circle, in said flitch (4), process the endoporus (5) of a circle;
Step S2: preparatory processing, the circumferential edge of said flitch (4) and said endoporus (5) is carried out preparatory processing;
Step S3: punch forming is a semicircular groove (10) with said flitch (4) punch forming after the preparatory processing;
Step S4: with the metal tube (100) of splicing of the said flitch (4) after two punch formings and welding formation annular;
Step S5: said metal tube (100) is cut the elbow that formation needs.
2. the preparation method of metal bends according to claim 1 is characterized in that, said step S2 makes the roughness of the circumferential edge of said flitch (4) and said endoporus (5) be 6.3.
3. the preparation method of metal bends according to claim 1; It is characterized in that; The concrete steps of said step S4 are following: the semicircular groove (10) of the said flitch (4) of the punch forming gained of two same sizes is alignd each other weld behind the butt, to form the metal tube (100) among the said step S4.
4. the preparation method of metal bends according to claim 3 is characterized in that, said step S4 welds the said metal tube (100) that forms and goes up two relative weld seams of formation,
Also comprise between said step S4 and the step S5 processed steps S40 is carried out on the surface of said two weld seams.
5. the preparation method of metal bends according to claim 4 is characterized in that, said step S40 comprises: to said weld seam polish, polished surface is handled, and is 6.3 with the surface roughness that guarantees said metal tube (100).
6. the preparation method of metal bends according to claim 1 is characterized in that, the concrete steps of said step S3 are following: at first, the endoporus (5) of said flitch (4) is set on the positioner of mould; Secondly, through the said flitch of said mould punching press (4) to form said semicircular groove (10).
7. the preparation method of metal bends according to claim 1 is characterized in that, in said step S5, said metal tube (100) is cut into two or more elbows.
8. the preparation method of metal bends according to claim 1 is characterized in that, in said step S5, it is 90 ° elbow bend (1) that said metal tube (100) is cut into four central angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103826147A CN102489941A (en) | 2011-11-25 | 2011-11-25 | Method for manufacturing metal elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103826147A CN102489941A (en) | 2011-11-25 | 2011-11-25 | Method for manufacturing metal elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102489941A true CN102489941A (en) | 2012-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103826147A Pending CN102489941A (en) | 2011-11-25 | 2011-11-25 | Method for manufacturing metal elbow |
Country Status (1)
| Country | Link |
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| CN (1) | CN102489941A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624497A (en) * | 2013-11-27 | 2014-03-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for machining large-radius thin-wall semi-annular part |
| CN104001752A (en) * | 2014-04-23 | 2014-08-27 | 浙江固的管业有限公司 | Production process for steel pipe fittings |
| CN106891258A (en) * | 2015-12-18 | 2017-06-27 | 比亚迪股份有限公司 | A kind of method for processing die cast metal parts |
| CN107309610A (en) * | 2017-06-28 | 2017-11-03 | 四川石油天然气建设工程有限责任公司 | A kind of radius of curvature R 1.5D corrosion resistant alloys composite elbow tube manufacture method |
| CN108581378A (en) * | 2018-04-13 | 2018-09-28 | 中船黄埔文冲船舶有限公司 | A kind of production method of hull elbow connection pipe |
| CN108994548A (en) * | 2018-09-19 | 2018-12-14 | 张化机（苏州）重装有限公司 | The processing technology of 90 degree of elbows |
| CN112570983A (en) * | 2019-09-27 | 2021-03-30 | 吴宗权 | Method for manufacturing stainless steel tiger feet |
Citations (5)
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| BR7902598A (en) * | 1979-04-27 | 1980-11-04 | Dana Corp | METAL GASKET PRODUCTION PROCESS |
| CN101085501A (en) * | 2007-06-20 | 2007-12-12 | 洪信章 | Method for processing thin wall metal elbow |
| CN101961733A (en) * | 2010-09-16 | 2011-02-02 | 浙江天兴管业有限公司 | Metal elbow cold extrusion molding method |
| CN101972795A (en) * | 2010-09-13 | 2011-02-16 | 浙江天兴管业有限公司 | Machining process of metal elbow |
| CN102161146A (en) * | 2010-12-24 | 2011-08-24 | 湖北汽车工业学院 | Manufacturing method of elbow |
-
2011
- 2011-11-25 CN CN2011103826147A patent/CN102489941A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR7902598A (en) * | 1979-04-27 | 1980-11-04 | Dana Corp | METAL GASKET PRODUCTION PROCESS |
| CN101085501A (en) * | 2007-06-20 | 2007-12-12 | 洪信章 | Method for processing thin wall metal elbow |
| CN101972795A (en) * | 2010-09-13 | 2011-02-16 | 浙江天兴管业有限公司 | Machining process of metal elbow |
| CN101961733A (en) * | 2010-09-16 | 2011-02-02 | 浙江天兴管业有限公司 | Metal elbow cold extrusion molding method |
| CN102161146A (en) * | 2010-12-24 | 2011-08-24 | 湖北汽车工业学院 | Manufacturing method of elbow |
Non-Patent Citations (1)
| Title |
|---|
| 刘又生: "用板料压制小半径弯头", 《锻压机械》, 30 June 1974 (1974-06-30) * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624497A (en) * | 2013-11-27 | 2014-03-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for machining large-radius thin-wall semi-annular part |
| CN103624497B (en) * | 2013-11-27 | 2016-01-06 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of processing method of large radius thin-walled semi-annular part |
| CN104001752A (en) * | 2014-04-23 | 2014-08-27 | 浙江固的管业有限公司 | Production process for steel pipe fittings |
| CN104001752B (en) * | 2014-04-23 | 2015-12-30 | 浙江固的管业有限公司 | A kind of steel pipe fittings production technology |
| CN106891258A (en) * | 2015-12-18 | 2017-06-27 | 比亚迪股份有限公司 | A kind of method for processing die cast metal parts |
| CN107309610A (en) * | 2017-06-28 | 2017-11-03 | 四川石油天然气建设工程有限责任公司 | A kind of radius of curvature R 1.5D corrosion resistant alloys composite elbow tube manufacture method |
| CN108581378A (en) * | 2018-04-13 | 2018-09-28 | 中船黄埔文冲船舶有限公司 | A kind of production method of hull elbow connection pipe |
| CN108994548A (en) * | 2018-09-19 | 2018-12-14 | 张化机（苏州）重装有限公司 | The processing technology of 90 degree of elbows |
| CN112570983A (en) * | 2019-09-27 | 2021-03-30 | 吴宗权 | Method for manufacturing stainless steel tiger feet |
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Application publication date: 20120613 |