CN1058737A - The manufacture method of high-pressure three-way pipe joint - Google Patents
The manufacture method of high-pressure three-way pipe joint Download PDFInfo
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- CN1058737A CN1058737A CN 90106781 CN90106781A CN1058737A CN 1058737 A CN1058737 A CN 1058737A CN 90106781 CN90106781 CN 90106781 CN 90106781 A CN90106781 A CN 90106781A CN 1058737 A CN1058737 A CN 1058737A
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Abstract
The present invention relates to a kind of manufacture method of high-pressure three-way pipe joint, in order to produce the high-pressure three-way pipe joint than good quality of plurality of specifications with less power-equipment.The inventive method be pipe is made torpedo-shaped and open an aperture in the middle, heating of pipe blank is placed on a patrix to the forging temperature and have in the middle of the counterdie of curved surface, when patrix is radially exerted pressure to pipe, make it moulding with the pulling block that is contained in the inboard, hole along axially stretching of aperture with given pace.
Description
The present invention relates to a kind of manufacture method of high-pressure three-way pipe joint, it comprises following step, makes pipe by certain-length, and heating of pipe blank to forging temperature, is placed in the mould situation compacted under in reinforcing to pipe.
The manufacture method of known high-pressure three-way pipe joint has multiple: as: Fuxin pipe fitting factory is that seamless steel pipe is cut into the length that needs, in heating furnace, be heated to forging temperature after, be placed on and compress axially moulding on the forcing press, the system arm is dialled in perforate then.The shortcoming of this manufacture method is to need heavy extrusion equipment, and increases unnecessary wall thickness widely, the tee pipe coupling of centering minitype high voltage, and particularly the thin-walled high-pressure three-way pipe joint can't be made; Yanshi, Luoyang pipe fitting factory adopts totally-enclosed forging die, and the heated seamless tube base is added the inner core forging.Also need large pressing machine overcoming the shaping resistance of totally-enclosed forging die, and loose tool structure and manufacturing process are all very complicated.
The objective of the invention is to overcome the deficiency of above-mentioned known technology, a kind of method of making high-pressure three-way pipe joint is provided, make it with the high-pressure three-way pipe joint of less power-equipment manufacturing than the plurality of specifications of good quality.
The present invention can realize by following measure:
Tubular material is made the torpedo-shaped pipe, the middle warp-wise of torpedo-shaped pipe is opened a hole of propping up bore less than tee pipe coupling, again the pipe that is heated to forging temperature is placed in the middle of the counterdie that a patrix and has curved surface, when patrix is exerted pressure to pipe, dial along axially drawing of hole with certain speed with the pulling block that is contained in the inboard, hole.
The present invention can also realize by following measure:
Can flatten the torpedo-shaped pipe, make the minor axis and the ratio of major axis be not less than 2/3, so that further guarantee the height of arm; Can also make hyperbolic screw thread wire to the contact-making surface of counterdie and pipe; In above-mentioned manufacture method, behind pulling block pull-out-hole 2, can push in the hole with identical velocity reversal again, until breaking away from, to reach shaping to arm with the hole.
The inventive method has following advantage:
Since pipe make torpedo-shaped, under the effect of upper and lower mould and pulling block, can make the metal of pipe in flow process, increase the thickness of shoulder (because high-pressure three-way pipe joint is under the high pressure effect, its shoulder stress is concentrated maximum), can make the wall thickness of three oral areas approximate mutually again, to guarantee external connection.High pressure resistant strength test of the high-pressure three-way pipe joint of manufacturing and burst strength result of the test have reached the calculating strength that allows about 1.5 times.
2. the present invention has reduced the manufacturing expense of mould owing to take open die that its structure is greatly simplified than whole full enclosed die;
3. because the inventive method meets the metal flow rule, plant capacity is significantly reduced, has saved equipment investment, as same manufacturing 4 " high-pressure three-way pipe joint; need 200～300 tons forcing press with axial compression method of forming manufacturing, need 50 tons drawbench with the inventive method;
4. the present invention adopts open die simple in structure and uses plant capacity little, therefore can be easy to make the high-pressure three-way pipe joint of all size;
5. when counterdie adopts the double curved helix profile, because it is from large to small continuous that this curve belongs to open (as shown in Figure 2) its radius of curvature, therefore when moulding, both be fit to the undergauge that the outer end is responsible for, can be the deformability turnover again sharp to satisfy the needs of arm turned welt sizing, this curve form draws when dialling distortion pipe simultaneously, and the suffered deformation force of workpiece mainly is a bending force, so moulding is more reasonable;
6. owing to be separately upper and lower mould structure, and make between the upper and lower mould and maintain a certain distance, therefore in the patrix pressurization, pipe is made a concession laterally, pipe deformation instability when having prevented moulding;
7. oppositely push the hole again up to breaking away from the hole behind the pulling block pull-out-hole, the counter motion of this pulling block makes a tube exterior and endoporus obtain shaping.
Description of drawings is as follows:
Fig. 1 is the cutaway view of torpedo-shaped pipe;
Fig. 2 is the hyperbolic spiral line chart;
Fig. 3 be the torpedo-shaped pipe just in mould by the schematic diagram of moulding.
Be described in further detail below in conjunction with accompanying drawing:
1. seamless steel pipe is processed into torpedo-shaped pipe 1;
2. pipe is pressed into ellipse, the ratio that makes its minor axis and major axis is less than 2/3;
3. hole 2 of ground auger radially at major axis place, the middle part of oval torpedo-shaped pipe 1 less than the high-pressure three-way pipe joint arm mouth diameters of manufacturing;
4. after pipe 1 being heated to forging temperature, putting into one of drawbench and have curved surface, the open die formed of the counterdie 4 of hyperbolic spiral wire preferably by patrix 3 and one;
5. the biconial pulling block 5 that will be slightly smaller than the arm mouth diameters is put into 2 places, hole of pipe 1 inboard;
6. in patrix 3 pressurization, pulling block 5 through the hole 2 axially draw the outside of dialling until pull-out-hole 2 with certain speed;
7. pulling block 5 is upwards pushed in the hole 2 until breaking away from hole 2 with same speed;
8. the patrix pressure relief also upwards promotes a segment distance;
9. take out in type high-pressure three-way pipe joint;
10. use of three the oral area shapings of the way of machining to high-pressure three-way pipe joint.
Claims (5)
1, a kind of manufacture method of high-pressure three-way pipe joint is to be placed on the pipe that is heated to forging temperature in the mould at the situation compacted under of reinforcing, it is characterized in that:
A, tubular material is made torpedo-shaped pipe 1;
B, open a hole 2 of propping up bore less than tee pipe coupling at the middle part of torpedo-shaped pipe 1;
C, the pipe 1 that will be heated to forging temperature are placed in the middle of the counterdie 4 that a patrix 3 and has curved surface;
D, when 3 pairs of pipe 1 warp-wises of patrix are exerted pressure, with the pulling block 5 that is contained in 2 inboards, hole along the hole 2 axially draw and dial with certain speed.
2, the manufacture method of high-pressure three-way pipe joint according to claim 1, it is characterized in that: torpedo-shaped pipe 1 is flattened, make the minor axis and the ratio of major axis be not less than 2/3, open a hole 2 of propping up bore less than tee pipe coupling then at major axis place, the middle part of pipe 1.
3, the manufacture method of high-pressure three-way pipe joint according to claim 1 is characterized in that: counterdie 4 is the hyperbolic spiral wire with the contact-making surface of pipe 1.
4, the manufacture method of high-pressure three-way pipe joint according to claim 2 is characterized in that: counterdie 4 can face be the hyperbolic spiral wire with connecing of pipe 1.
5, according to the manufacture method of claim 1 or 2 or 3 or 4 described high-pressure three-way pipe joints, it is characterized in that: behind pulling block 5 pull-out-holes 2, push hole 2 with identical velocity reversal again, until breaking away from hole 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106781 CN1058737A (en) | 1990-08-05 | 1990-08-05 | The manufacture method of high-pressure three-way pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106781 CN1058737A (en) | 1990-08-05 | 1990-08-05 | The manufacture method of high-pressure three-way pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1058737A true CN1058737A (en) | 1992-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106781 Pending CN1058737A (en) | 1990-08-05 | 1990-08-05 | The manufacture method of high-pressure three-way pipe joint |
Country Status (1)
| Country | Link |
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| CN (1) | CN1058737A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100445627C (en) * | 2006-03-29 | 2008-12-24 | 河北宏润重工集团有限公司 | Preparation method of Y-shaped hot-pressed three-way pipe fitting |
| CN102039345B (en) * | 2009-10-19 | 2013-07-31 | 中国石油天然气集团公司 | Extrusion forming die for thick-wall butt welding tee joint and process for manufacturing tee joint |
| CN103394881A (en) * | 2013-08-15 | 2013-11-20 | 北京隆盛泰科石油管科技有限公司 | Novel hot extrusion tee joint forming process |
| CN104190798A (en) * | 2014-08-13 | 2014-12-10 | 中国石油天然气集团公司 | Tee joint compound forming die and technological manufacturing method of large-diameter tee joint |
| CN110355323A (en) * | 2019-07-05 | 2019-10-22 | 河北沧海核装备科技股份有限公司 | A kind of processing technology of threeway or header disposal molding |
-
1990
- 1990-08-05 CN CN 90106781 patent/CN1058737A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100445627C (en) * | 2006-03-29 | 2008-12-24 | 河北宏润重工集团有限公司 | Preparation method of Y-shaped hot-pressed three-way pipe fitting |
| CN102039345B (en) * | 2009-10-19 | 2013-07-31 | 中国石油天然气集团公司 | Extrusion forming die for thick-wall butt welding tee joint and process for manufacturing tee joint |
| CN103394881A (en) * | 2013-08-15 | 2013-11-20 | 北京隆盛泰科石油管科技有限公司 | Novel hot extrusion tee joint forming process |
| CN103394881B (en) * | 2013-08-15 | 2016-12-28 | 北京隆盛泰科石油管科技有限公司 | A kind of hot extrusion three-way forming technique |
| CN104190798A (en) * | 2014-08-13 | 2014-12-10 | 中国石油天然气集团公司 | Tee joint compound forming die and technological manufacturing method of large-diameter tee joint |
| CN110355323A (en) * | 2019-07-05 | 2019-10-22 | 河北沧海核装备科技股份有限公司 | A kind of processing technology of threeway or header disposal molding |
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