CN1850390A - Method for making steel elbow with straight tube section - Google Patents
Method for making steel elbow with straight tube section Download PDFInfo
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- CN1850390A CN1850390A CN 200610046454 CN200610046454A CN1850390A CN 1850390 A CN1850390 A CN 1850390A CN 200610046454 CN200610046454 CN 200610046454 CN 200610046454 A CN200610046454 A CN 200610046454A CN 1850390 A CN1850390 A CN 1850390A
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- elbow
- tire
- straight length
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- making
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Abstract
The present invention relates to a method for manufacturing steel elbow with straight tube portion. Said method includes the following several steps: (1), making elbow pressure forming mould; (2), defining elbow blanking angle; (3), bending, using hydraulic machine to apply pressure and forming; (4), taking out mould and mechanically-finishing to obtain finished product.
Description
(1) technical field
The present invention relates to a kind of band straight length steel elbow preparation method.
(2) background technology
Steel elbow adopts pushing technology to make usually.Production process is that good as calculated straight length is placed on the elbow push machine, and straight length to mecystasis, at the uniform velocity becomes elbow by the core the form of the foetus through electromagnetic induction heating under thrust.The elbow of making of this technology can not have straight length.
On the engineering the long straight length of 50-100mm need be arranged between flange and elbow, to satisfy the requirement of pipeline reasonable Arrangement.For this reason, when construction, need to weld straight-run of pipe at elbow one end earlier, again straight tube is welded mutually with flange.The pipeline of Zhi Zuoing like this forms the circular weld of two road close proximity between flange and elbow, not only influence the attractive in appearance of system, and increased the probability of pipe leakage.
(3) summary of the invention
The technical problem to be solved in the present invention, provide a kind of elbow that has straight length, the time need not to be connected with flange in construction, not only improve the attractive in appearance of pipeline at elbow one end welding straight-run of pipe, and a kind of band straight length steel elbow preparation method that can between flange and elbow, not leak of pipeline.
The technical scheme that adopts is:
A kind of band straight length steel elbow preparation method comprises the following steps:
1, make elbow die mould mold, its die mould mold is made up of last tire, following tire and core tire, and the last tire of made is identical with the elbow outer diameter curvature with the curvature of following tire, and the core tire is identical with making swan neck material internal diameter;
2, determining of elbow blanking angle considered to have straight length, during the elbow blanking, made angle of bend need be added 60-90 °, and its 60-90 ° allowance is as the straight section materials;
3, bend, go one jiao to make the mouth of pipe become ellipticity the end-grain cutting to be processed of elbow material pipe.Heat this pipe end to the red heat attitude,, continue that this is held to the red heat attitude with flame heat, be placed on by upper pressed tyre, press down on the elbow die mould mold that tire forms, use hydraulic press compression moulding while hot with the hand hammer equating notching edge and the tire core of packing into;
4, the tire core is taken off;
5, be machined to finished product.
Above-mentioned a kind of band straight length steel elbow preparation method can be used as other metal material band straight length elbow-making methods.
The present invention need not when construction earlier at elbow one end welding straight-run of pipe, with straight tube that has and flange welding, flange has only circular weld with between elbow, reduced the weld seam of elbow with straight tube, it is attractive in appearance to have pipe-line system, reduce to leak, when having saved the Welder and the advantage that consumes of welding material.
(4) description of drawings
Fig. 1 is an elbow die mould mold schematic diagram.
Fig. 2 is a core tire schematic diagram.
Fig. 3 is an elbow blanking angle schematic diagram.
(5) specific embodiment
Embodiment:
This example is 90 ° of elbow-making methods of band straight length 100mm steel Φ 114 * 9mm, and implementation step is as follows:
1,90 ° of elbows of Φ 114 * 9mm are determined that the blanking angle is 160 °, wherein 70 ° of allowances are as the straight section materials, following elbow material.
2,160 ° of elbow material one end-grain cutting of Φ 114 * 9mm are gone one jiao 4, its otch forms ellipticity.
3, the elbow material is whole with the hand hammer equating to the red heat attitude with flame heat elbow material cut ends.
4, beat reality by the ellipticity otch tire core 3 usefulness hand hammers of packing into.
5, continue to use flame heat elbow material cut ends 120mm scope interior, immediately elbow material to be bending is placed on the pressure tire of tire 1 and following tire 2 compositions, use hydraulic press compression moulding to the red heat attitude.
6, tire core 3 is taken off.
7, be machined to finished product.
Claims (2)
1, a kind of band straight length steel elbow preparation method, its feature comprises the following steps:
A, making elbow die mould mold, its die mould mold is made up of last tire, following tire and core tire, and the last tire of made is identical with the elbow outer diameter curvature with the curvature of following tire, and the core tire is identical with making swan neck material internal diameter;
Determining of B, elbow blanking angle considered to have straight length, during the elbow blanking, made angle of bend need be added 60-90 °, and its 60-90 ° allowance is as the straight section materials;
C, bend, go to one jiao (4) to make the mouth of pipe become ellipticity the end-grain cutting to be processed of elbow material pipe, heat this pipe end to the red heat attitude, while hot with the hand hammer equating notching edge and the tire core (3) of packing into, this is held to the red heat attitude with flame heat in continuation, be placed on by upper pressed tyre (1), press down on the elbow die mould mold that tire (2) forms, use hydraulic press compression moulding;
D, tire core (3) is taken off;
E, be machined to finished product.
2, a kind of band straight length steel elbow preparation method according to claim 1 is characterized in that described a kind of band straight length steel elbow preparation method, can be used as other metal material band straight length elbow-making methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610046454 CN1850390A (en) | 2006-04-29 | 2006-04-29 | Method for making steel elbow with straight tube section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610046454 CN1850390A (en) | 2006-04-29 | 2006-04-29 | Method for making steel elbow with straight tube section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1850390A true CN1850390A (en) | 2006-10-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610046454 Pending CN1850390A (en) | 2006-04-29 | 2006-04-29 | Method for making steel elbow with straight tube section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1850390A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240716A (en) * | 2011-06-03 | 2011-11-16 | 燕山大学 | Bending and horizontal type reshaping method of high-pressure bend |
| CN103286252A (en) * | 2012-02-27 | 2013-09-11 | 辽阳石化机械设计制造有限公司 | Compacting die for reducing elbow and forming method of reducing elbow |
| CN107363138A (en) * | 2017-08-17 | 2017-11-21 | 燕山大学 | Elbow with straight section die forming method |
-
2006
- 2006-04-29 CN CN 200610046454 patent/CN1850390A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240716A (en) * | 2011-06-03 | 2011-11-16 | 燕山大学 | Bending and horizontal type reshaping method of high-pressure bend |
| CN102240716B (en) * | 2011-06-03 | 2013-07-03 | 燕山大学 | Bending and horizontal type reshaping method of high-pressure bend |
| CN103286252A (en) * | 2012-02-27 | 2013-09-11 | 辽阳石化机械设计制造有限公司 | Compacting die for reducing elbow and forming method of reducing elbow |
| CN107363138A (en) * | 2017-08-17 | 2017-11-21 | 燕山大学 | Elbow with straight section die forming method |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |