CN1072627A - The manufacture method of the steel elbow of band straight length and mould and products thereof - Google Patents
The manufacture method of the steel elbow of band straight length and mould and products thereof Download PDFInfo
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- CN1072627A CN1072627A CN 91111310 CN91111310A CN1072627A CN 1072627 A CN1072627 A CN 1072627A CN 91111310 CN91111310 CN 91111310 CN 91111310 A CN91111310 A CN 91111310A CN 1072627 A CN1072627 A CN 1072627A
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Abstract
A kind of manufacture method of steel elbow of the band straight length that is used for pipe-line system and the particular manufacturing craft in this method and with the steel elbow of the band straight length of this method production.The upper and lower nib of its particular manufacturing craft is except that comprising sweep, and a straight length also is being with at two ends respectively, and core is divided into five, struts by drift simultaneously external diameter and elbow aperture are coincide, and is convenient to dress and gets core.Manufacture method also comprises the technology of repairing mouth, crossing ball except that blanking, heating, particular manufacturing craft moulding, guaranteed the unanimity in aperture.The elbow of being produced has straight length, can improve and the welding quality of taking over.
Description
The present invention relates to a kind of band straight length that is used for pipe-line system the steel elbow manufacture method and be used for the particular manufacturing craft of this method and with the steel elbow of the band straight length of this method production.
So far, the elbow in the commercially available pipe-line system all is not with straight length, and this is owing to there is not suitable process, does not particularly design shaping dies cleverly, so that after the elbow shaping, due to core is difficult to take out.And this not with the elbow of straight length, the welding of butt tube is very disadvantageous.
Task of the present invention provides a kind of method of steel elbow of making the band straight length, is used for the particular manufacturing craft of this method and with the steel elbow of the band straight length of this method manufacturing.
The method of making the steel elbow of band straight length is:
1, blanking: cutting length is that elbow expansion length deducts 1.5～2.5 millimeters;
2, heating: blank heating to 600～700 that will descend ℃;
3, press molding: place particular manufacturing craft to be shaped in 2～3 minutes hot blank with the forcing press pressurization;
4, Xiu Kou: the elbow after will being shaped takes out from particular manufacturing craft, and the mouth of pipe at elbow two ends is repaired;
5, cross ball: steel ball and several external diameters of an external diameter being equaled the elbow aperture are progressively put into elbow hole one end less than the steel ball in elbow aperture, and pressurization makes steel ball roll out from the other end then, thereby reach the purpose in finishing elbow aperture;
6,, and be finished product after being coated with antirust paint for the elbow outer surface with elbow two ends car bevel for welding.
Further specify the structure of the particular manufacturing craft that is used for said method and the product of producing with this method below by accompanying drawing.
Fig. 1 is the vertical profile schematic diagram of particular manufacturing craft compacting elbow.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is the product structure schematic diagram of band straight length elbow.
Referring to Fig. 1, Fig. 2.This particular manufacturing craft comprises the core (3) in a patrix (1), counterdie (4) and the pore of packing into.Wherein the vertical section of patrix (1) comprises that a bending radius equals the dome camber line of curved radius in the elbow; The vertical section of counterdie (4) comprises that a bending radius equals the concave arc line of elbow excurvation radius; Cross section after upper and lower mould closes up comprises that a diameter equals the hole of bend pipe external diameter.In addition, this mould place unlike the prior art is:
1, the two ends of the concave, convex circular arc line in the vertical section of patrix (1) and counterdie (4) also connect with the tangent straightway of circular arc line respectively, during this straightway compacting, can form the straight length of elbow;
2, the design of core (3) is relatively unique, and its structure is:
Its cross section is the circle that a diameter equals the bend pipe aperture, and the top in its vertical section is the circular arc that bending radius equals curved radius in the elbow hole, and the bottom is the circular arc that bending radius equals elbow hole excurvation radius, and its length overall equals the length overall of elbow sweep; And core crosscut along its length is three sections, i.e. left side section (31), stage casing (32) and right section (33).Left section and right section is cut to two respectively again along the vertical section, be movably hinged in the bottom by loose pin (6) between two, in case the dislocation between two processes one section as tool holding plane partly in the outer end of each sheet, uses during for taking-up.Be that core constitutes by five, being divided into five is to take out core in order to be convenient to block-by-block after being shaped.After five of core close up, also comprise a wedged hole on top, after drift (5) is seated wedged hole, can with left and right section separately two strut with the elbow endoporus and match.After shaping finishes, drift is pounded out, get final product burst, piecemeal takes out core in bend pipe.
Referring to Fig. 3, the elbow (2) that adopts said method to make has the sweep (21) except that the same with general elbow, and its two ends have straight length (22) respectively, and its aperture uniformity.The straight flange segment length generally equals the nominal diameter D of bend pipe, also can create the straight length elbow of 1.25D or 1.5D certainly.
Advantage of the present invention and good effect are:
1, manufacturing is simple, easy to implement with the method technology of bends for straight pipes;
2, particular manufacturing craft is reasonable in design ingenious, conveniently gets core, through the practice test, both can guarantee product quality, again convenient batch production.
3, the band bends for straight pipes that provides for society has improved the quality that welding is taken over.
Claims (3)
1, a kind of manufacture method that is used for pipe-line system band straight length steel elbow, comprise blanking, heating, place the particular manufacturing craft press molding again, it is characterized in that behind press molding, through the mouth of pipe at finishing elbow two ends, steel ball and several external diameters that pressurization at last makes an external diameter equal the elbow aperture carry out the shaping in hole by the elbow hole less than the steel ball in elbow aperture.
2, a kind of particular manufacturing craft that is used for the described manufacturing band of claim 1 straight length steel elbow method, comprise the core in upper die and lower die and the pore of packing into, wherein the patrix vertical section comprises that a bending radius equals the dome camber line of curved radius in the elbow, the counterdie vertical section comprises that a bending radius equals the concave arc line of elbow excurvation radius, cross section after upper and lower mould closes up comprises that a diameter equals the hole of bend pipe external diameter, is characterized in that:
The two ends of protruding, the concave arc line in the vertical section of a, said patrix (1) and counterdie (4) also connect with the tangent straightway of circular arc line with one respectively,
B, the cross section of said core (3) is the circle that diameter equals the bend pipe aperture, the top in its vertical section is the circular arc that bending radius equals curved radius in the elbow hole, the bottom is that bending radius equals the circular arc of elbow hole excurvation radius and the length overall that length overall equals the elbow sweep, and core (3) crosscut along its length is three sections, i.e. a left side section (31), stage casing (32) and right section (33), left side section and right section are cut to two respectively again along the vertical section, be movably hinged in the bottom by loose pin (6) between two, the outer end of each sheet processes one section plane as the tool holding part, simultaneously, after five of core close up, also comprise a wedged hole on top, after drift (5) is seated wedged hole, with left side section, two of right section strut with the elbow endoporus and match.
3, the elbow of the described method manufacturing of a kind of claim 1 is characterized in that having the straight-run of pipe part respectively at the two ends of elbow sweep.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91111310 CN1072627A (en) | 1991-11-28 | 1991-11-28 | The manufacture method of the steel elbow of band straight length and mould and products thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91111310 CN1072627A (en) | 1991-11-28 | 1991-11-28 | The manufacture method of the steel elbow of band straight length and mould and products thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1072627A true CN1072627A (en) | 1993-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91111310 Pending CN1072627A (en) | 1991-11-28 | 1991-11-28 | The manufacture method of the steel elbow of band straight length and mould and products thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN1072627A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050558C (en) * | 1993-12-17 | 2000-03-22 | 沈阳市煤气工程公司机械设备厂 | Technology for producing guage bent tube |
| CN100564981C (en) * | 2008-03-27 | 2009-12-02 | 二重集团（德阳）重型装备股份有限公司 | Hot segment of bent pipe of main pipeline of reactor and manufacture method thereof |
| CN100563865C (en) * | 2008-03-27 | 2009-12-02 | 二重集团（德阳）重型装备股份有限公司 | Combined shaping mold |
| CN102161146A (en) * | 2010-12-24 | 2011-08-24 | 湖北汽车工业学院 | Manufacturing method of elbow |
| CN102430626A (en) * | 2011-11-23 | 2012-05-02 | 吉林昊宇电气股份有限公司 | Thin-wall equant (small)-radius elbow secondary forming device and secondary forming method thereof |
| CN102489567A (en) * | 2011-12-27 | 2012-06-13 | 江阴中南重工股份有限公司 | Core head for producing 90-degree hot push elbow |
| CN103658273A (en) * | 2012-09-11 | 2014-03-26 | 北京首宏钢重型装备技术有限公司 | Combined core mould and pipe fitting bending mould |
| CN103658274A (en) * | 2012-09-11 | 2014-03-26 | 北京首宏钢重型装备技术有限公司 | Pipe fitting forming device |
| CN103659167A (en) * | 2012-09-11 | 2014-03-26 | 北京首宏钢重型装备技术有限公司 | Pipe fitting machining method |
| CN104620037A (en) * | 2012-09-18 | 2015-05-13 | 株式会社利富高 | Curved tube structure and die for forming curved tube |
| CN105195622A (en) * | 2015-10-26 | 2015-12-30 | 浙江志达管业有限公司 | Pipe bend punch-forming die |
| CN107363138A (en) * | 2017-08-17 | 2017-11-21 | 燕山大学 | Elbow with straight section die forming method |
| CN109622692A (en) * | 2018-12-17 | 2019-04-16 | 渤海造船厂集团有限公司 | Bend Stainless Steel U pipe internal support device |
| CN109807567A (en) * | 2019-03-19 | 2019-05-28 | 南昌航空大学 | A method of improving 1D and following small-bend radius pipe bend straight end length |
| CN110260077A (en) * | 2019-06-15 | 2019-09-20 | 江阴市南方管件制造有限公司 | A kind of butt welding eccentric reducing elbow and its production technology used in industrial pipeline turning |
| CN110735970A (en) * | 2019-09-12 | 2020-01-31 | 中国二冶集团有限公司 | Construction method for installing multiple continuous cold bent pipes of long-distance pipeline |
| CN110756632A (en) * | 2018-07-25 | 2020-02-07 | 丛华 | Straight pipe elbow cold forming equipment with combined mold core structure |
| CN114309127A (en) * | 2020-09-29 | 2022-04-12 | 郑州万达重工股份有限公司 | Inner wall surfacing small-bending-radius bent pipe and forming method thereof |
-
1991
- 1991-11-28 CN CN 91111310 patent/CN1072627A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050558C (en) * | 1993-12-17 | 2000-03-22 | 沈阳市煤气工程公司机械设备厂 | Technology for producing guage bent tube |
| CN100564981C (en) * | 2008-03-27 | 2009-12-02 | 二重集团（德阳）重型装备股份有限公司 | Hot segment of bent pipe of main pipeline of reactor and manufacture method thereof |
| CN100563865C (en) * | 2008-03-27 | 2009-12-02 | 二重集团（德阳）重型装备股份有限公司 | Combined shaping mold |
| CN102161146A (en) * | 2010-12-24 | 2011-08-24 | 湖北汽车工业学院 | Manufacturing method of elbow |
| CN102430626A (en) * | 2011-11-23 | 2012-05-02 | 吉林昊宇电气股份有限公司 | Thin-wall equant (small)-radius elbow secondary forming device and secondary forming method thereof |
| CN102430626B (en) * | 2011-11-23 | 2013-10-02 | 吉林昊宇电气股份有限公司 | Thin-wall equant (small)-radius elbow secondary forming device and secondary forming method thereof |
| CN102489567A (en) * | 2011-12-27 | 2012-06-13 | 江阴中南重工股份有限公司 | Core head for producing 90-degree hot push elbow |
| CN103658273A (en) * | 2012-09-11 | 2014-03-26 | 北京首宏钢重型装备技术有限公司 | Combined core mould and pipe fitting bending mould |
| CN103658274A (en) * | 2012-09-11 | 2014-03-26 | 北京首宏钢重型装备技术有限公司 | Pipe fitting forming device |
| CN103659167A (en) * | 2012-09-11 | 2014-03-26 | 北京首宏钢重型装备技术有限公司 | Pipe fitting machining method |
| CN104620037A (en) * | 2012-09-18 | 2015-05-13 | 株式会社利富高 | Curved tube structure and die for forming curved tube |
| US10253913B2 (en) | 2012-09-18 | 2019-04-09 | Nifco Inc. | Curved tube structure and die for forming curved tube |
| CN105195622A (en) * | 2015-10-26 | 2015-12-30 | 浙江志达管业有限公司 | Pipe bend punch-forming die |
| CN107363138A (en) * | 2017-08-17 | 2017-11-21 | 燕山大学 | Elbow with straight section die forming method |
| CN110756632A (en) * | 2018-07-25 | 2020-02-07 | 丛华 | Straight pipe elbow cold forming equipment with combined mold core structure |
| CN110756632B (en) * | 2018-07-25 | 2024-04-12 | 丛华 | Cold forming equipment with combined mold core structure and straight pipe elbow |
| CN109622692A (en) * | 2018-12-17 | 2019-04-16 | 渤海造船厂集团有限公司 | Bend Stainless Steel U pipe internal support device |
| CN109807567A (en) * | 2019-03-19 | 2019-05-28 | 南昌航空大学 | A method of improving 1D and following small-bend radius pipe bend straight end length |
| CN110260077A (en) * | 2019-06-15 | 2019-09-20 | 江阴市南方管件制造有限公司 | A kind of butt welding eccentric reducing elbow and its production technology used in industrial pipeline turning |
| CN110735970A (en) * | 2019-09-12 | 2020-01-31 | 中国二冶集团有限公司 | Construction method for installing multiple continuous cold bent pipes of long-distance pipeline |
| CN114309127A (en) * | 2020-09-29 | 2022-04-12 | 郑州万达重工股份有限公司 | Inner wall surfacing small-bending-radius bent pipe and forming method thereof |
| CN114309127B (en) * | 2020-09-29 | 2023-09-26 | 郑州万达重工股份有限公司 | Inner wall surfacing small bending radius bent pipe and forming method thereof |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |