CN1059961A - T-branch used in pipe-lines and moulding process thereof - Google Patents
T-branch used in pipe-lines and moulding process thereof Download PDFInfo
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- CN1059961A CN1059961A CN 90106377 CN90106377A CN1059961A CN 1059961 A CN1059961 A CN 1059961A CN 90106377 CN90106377 CN 90106377 CN 90106377 A CN90106377 A CN 90106377A CN 1059961 A CN1059961 A CN 1059961A
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- pipe
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- pressure ram
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Abstract
T-branch used in pipe-lines and moulding process thereof, its major character are that three-way pipe is made by superplastic alloy, and moulding process is made up of following operation: the superplastic preparation of (1) pipe; (2) superplastic gas-bulging and the moulding of extruding composite force; (3) cut the termination, open groove and antirust processing.Three-way pipe provided by the present invention and moulding process, technology is simple, and the power that device therefor is few, moulding is required is little, and the three-way pipe wall thickness of acquisition is even, bears working pressure height, precision height, does not need secondary operations.
Description
The present invention relates to the accessory commonly used in the delivery line, a kind of withstand voltage three-way pipe and formation technique thereof promptly are provided.
Three-way pipe is an indispensable accessory commonly used in oil, the chemical industry delivery line.Not high pressure resistant because the three-way pipe in the heating pipeline exists sand holes, so can not be used for oil, chemical industry delivery line.Generally adopt at present both at home and abroad cold extrusion technology to produce three-way pipe in oil, the chemical industry delivery line, but the required equipment of this technology is huge, and forming pressure is also very high, and an equipment needs ten thousand yuan of 70-80, moreover, the three-way tube wall thickness ununiformity after the moulding is even.Except that above-mentioned mould-forming method, the domestic people of having adopts another method, promptly in pipe, put into threaded ball, on tube wall, open a hole, insert threaded pull bar from this hole and be threaded, then pull bar is applied pulling force and produces three-way pipe with the pipe endosphere, adopt this method shaping three-way pipe, though need not that price is the most expensive, volume is doted on big equipment, the three-way tube wall thickness ununiformity after being shaped is even, and the three-way pipe height of pulling out also is restricted.
The purpose of this invention is to provide a kind of wall thickness evenly, bear the high production technology of working pressure, device therefor is simple, power consumption is little, the three-way pipe and the formation technique thereof of the superplastic gas-bulging of little investment and the moulding of extruding composite force.
The present invention utilizes superplastic alloy to be easy to the principle of homogeneous deformation along the crystal boundary slippage at specified conditions, selecting the superplastic alloy pipe for use is blank, be placed on and limit in the mould, under the temperature of superplastic forming, make three-way pipe by the inflatable and the effect of extruding composite force, its reparation technology is made up of following operation:
1, the superplastic preparation of pipe
The pipe that machining is good is obtaining heating under the superplastic temperature, insulation, and the shrend of coming out of the stove then so is recycled to pipe and obtains till the optimum hyper-plastic energy.
2, superplastic gas-bulging and extruding composite force are shaped
To put into the mould that two lobe moulds are formed through heat treated three-way pipe blank, seal two opening ends with pressure ram by external force with electric conductivity, connect power supply, pipe and mould are electrically heated to the temperature of superplastic forming, insulation, by given pace bubbling air or nitrogen, meanwhile pressure ram to the opposite direction pusher, finishes until shaping under external force then;
3, cut the termination, open groove
The closed end of the good three-way pipe that is shaped is removed, reprocess out 45 ° of weld seam grooves of other three port, in addition, can apply resin layer from the teeth outwards according to product needed.
Be described in detail withstand voltage three-way pipe of embodiment 1-superplasticity 20 steel provided by the present invention and formation technique thereof below in conjunction with accompanying drawing
Sectional drawing when accompanying drawing 1 is the three-way pipe shaping.
The pipe that machining is good heats 890 ℃ of temperature, is incubated 15 minutes, the shrend of coming out of the stove then, and so thermal cycle is three times, and obtaining grain size is 5-7llm, and specific elongation is σ＞200%.Again with φ 45mm, wall thickness 4.0mm, the superplasticity 20 steel pipe bases 1 of long 120mm are put into the mould of being made up of two lobe moulds 2, use tapering circular boop 3 behind the matched moulds, 4 compress, pressure ram 5,6 respectively with power connection 7,8 connect, provide 12V by high current transformer 9, the power supply of 1600A power, by pressure ram pipe 1 is carried out electric heating, insert 11 pairs of pipe thermometrics of thermocouple of band magnetic tube by hole 10, scavenging action is also played in hole 10 simultaneously, when temperature is heated to 750 ℃ by pressure ram 5,6 two ends apply 20 tons of relative extruding forces to pipe, 12 send into nitrogen 100-120atm from the hole in the time of extruding.After shaping finishes, cut away the termination of three-way pipe one end, car goes out 45 ° of weld seam grooves of other three port again, applies rust proof paint at last.
By the superplasticity 20 steel three-way pipes that the present invention obtained, inside and outside any surface finish, precision height need not reprocessed.After dissecting in addition, wall thickness is even, and maximum reduction is no more than 12%, and same pieces is born the working pressure height relatively, and the three-way pipe intensity behind the superplastic forming is suitable with normality 20 hardness of steel.
Embodiment's 2 super-plastic Zn-Al alloys are withstand voltage antirust three-way pipe and formation technique
To have superplastic Zn-Al alloy pipe and put into the mould that two lobe moulds are formed, the formation technique of this Zn-Al alloy three-way pipe removes 265 ℃ of forming temperatures, extruding force is 7 tons, and the bulging atmospheric pressure is beyond the 15atm, and other operation and process conditions are all the same with embodiment 1.In addition, this three-way pipe needn't be coated with rust proof paint.
To have superplastic Ti-6Al-4V pipe and put into the mould that two lobe moulds are formed, it is 930 ℃ that this formation technique removes forming temperature, and extruding force is 30 tons, and beyond the bulging atmospheric pressure 150-170atm, other process conditions are the same with embodiment 1.In addition, needn't be coated with rust proof paint.
In sum as can be seen, withstand voltage three-way pipe provided by the present invention and formation technique thereof, its technology is simple, and device therefor is few, and the shaping required drive is little, and the three-way pipe wall thickness of acquisition is even, bears working pressure height, precision height, does not need secondary operations.
Claims (3)
1, T-branch used in pipe-lines is characterized in that it is made by superplastic alloy.
2,, it is characterized in that superplastic alloy preferably adopts 20 steel, allumen and Ti-6Al-4V according to the described three-way pipe of claim 1.
3, the technology of a kind of claim 1 that is shaped, 2 described three-way pipes is characterized in that it is made up of following operation:
(1) the superplastic preparation of pipe
The pipe that machining is good is obtaining heating under the superplastic temperature, insulation, and the shrend of coming out of the stove then so is recycled to pipe and obtains optimum hyper-plastic;
(2) superplastic gas-bulging is shaped with the extruding composite force
To put into the mould that two lobe moulds are formed through heat treated three-way pipe blank, seal two opening ends with pressure ram by external force with electric conductivity, pressure ram is connected power supply, then to mould and pipe electric heating, reach the superplastic forming temperature after, insulation, then by given pace bubbling air or nitrogen, meanwhile, pressure ram to the opposite direction pusher, finishes until shaping under external force;
(3) cut the termination, open groove
The termination of the good three-way pipe that is shaped is removed, reprocessed out 45 ° of weld seam grooves of other three port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106377 CN1023817C (en) | 1990-09-17 | 1990-09-17 | T-branch used in pipe-lines and shaping technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106377 CN1023817C (en) | 1990-09-17 | 1990-09-17 | T-branch used in pipe-lines and shaping technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1059961A true CN1059961A (en) | 1992-04-01 |
| CN1023817C CN1023817C (en) | 1994-02-16 |
Family
ID=4880018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106377 Expired - Fee Related CN1023817C (en) | 1990-09-17 | 1990-09-17 | T-branch used in pipe-lines and shaping technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023817C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537437B (en) * | 2009-04-22 | 2011-01-05 | 浙江飞挺管业有限公司 | Special pressure relief device for manufacturing three-way pipe fittings by cold extrusion forming |
| CN103920744A (en) * | 2014-05-04 | 2014-07-16 | 唐山诚达建设集团有限公司 | Integrated processing device with branch pipe fitting |
| CN104070101A (en) * | 2014-06-25 | 2014-10-01 | 郑州万达管件制造有限公司 | Cold-press forming process of thick-wall bimetallic tee |
| CN107695624A (en) * | 2017-09-29 | 2018-02-16 | 北京科勒有限公司 | The preparation method of bathroom hardware housing |
| CN109590676A (en) * | 2018-11-02 | 2019-04-09 | 陈志城 | A kind of preparation process of novel hydraulic molding trolley |
| CN115608839A (en) * | 2022-12-19 | 2023-01-17 | 沧州沧兴管道制造有限公司 | Pipe fitting gas expansion thermal forming equipment and process |
-
1990
- 1990-09-17 CN CN 90106377 patent/CN1023817C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537437B (en) * | 2009-04-22 | 2011-01-05 | 浙江飞挺管业有限公司 | Special pressure relief device for manufacturing three-way pipe fittings by cold extrusion forming |
| CN103920744A (en) * | 2014-05-04 | 2014-07-16 | 唐山诚达建设集团有限公司 | Integrated processing device with branch pipe fitting |
| CN103920744B (en) * | 2014-05-04 | 2016-01-27 | 唐山诚达建设集团有限公司 | A kind of band arm pipe fitting one process equipment |
| CN104070101A (en) * | 2014-06-25 | 2014-10-01 | 郑州万达管件制造有限公司 | Cold-press forming process of thick-wall bimetallic tee |
| CN104070101B (en) * | 2014-06-25 | 2016-03-02 | 郑州万达重工股份有限公司 | Heavy wall bimetallic three-way pipe cold pressing forming process |
| CN107695624A (en) * | 2017-09-29 | 2018-02-16 | 北京科勒有限公司 | The preparation method of bathroom hardware housing |
| CN107695624B (en) * | 2017-09-29 | 2019-07-19 | 北京科勒有限公司 | The production method of bathroom hardware shell |
| CN109590676A (en) * | 2018-11-02 | 2019-04-09 | 陈志城 | A kind of preparation process of novel hydraulic molding trolley |
| CN115608839A (en) * | 2022-12-19 | 2023-01-17 | 沧州沧兴管道制造有限公司 | Pipe fitting gas expansion thermal forming equipment and process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1023817C (en) | 1994-02-16 |
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