CN102773307B - Forming process of parallel three-way connector - Google Patents
Forming process of parallel three-way connector Download PDFInfo
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- CN102773307B CN102773307B CN201210293937.3A CN201210293937A CN102773307B CN 102773307 B CN102773307 B CN 102773307B CN 201210293937 A CN201210293937 A CN 201210293937A CN 102773307 B CN102773307 B CN 102773307B
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Abstract
The invention discloses a forming process of a parallel three-way connector. The central axes of three interfaces of the parallel three-way connector are parallel, wherein the two interfaces are respectively placed at the two ends of an elbow; another interface is placed at the middle part of the elbow; the toward direction of the interface is inverse with the interfaces of the elbow two ends. The forming method comprises the following steps of: thermally treating a bend made of a steel tube, after flattening and heating the bend, putting the bend between two pressed half molds, pressing the pipe orifices of the two ends of the bend to extrude the bend towards the direction of an extruding tank when the two half pressed half molds are assembled, so as to form a convex closure; after heating, reshaping a reshaping mold; using an broaching core to expand the hole in the convex closure to the aperture of the three-way interface; and obtaining the parallel three-way connector after finishing, thermally heating and machining. Via the way of firstly manufacturing the elbow and secondly processing branch pipes, the damages of the branch pipes are avoided, and the elbow with very small bending radius can be manufactured; according to the forming way, a trimming die is not needed, so that the inconvenience caused by the trimming die used in the elbow is avoided, the forming process is simple and the efficiency is high.
Description
Technical field
The present invention designs a kind of moulding process of three-way connection, specifically a kind of moulding process of parallel tee joint.
Background technology
Common three-way connection is divided into T-shaped threeway and skew T, and T-shaped threeway is normally put into shaping mould by a straight tube pipe, packs the punch die of stretching arm in pipe into, to punch die, presses on stretched arm on pipe wall.And skew T normally processes after the shape of T-shaped threeway, then its bending machining is made.No matter be T-shaped threeway or skew T, 3 interfaces are all to distribute radially, and connecting pipe takes up space larger.For boiler etc., need to connect the equipment of a large amount of pipelines, in limited space, how to greatest extent pipe laying becomes and needs a problem solving.Research is found, if three pipelines that can make to be connected in threeway are parallel to each other, and reduces the spacing of pipeline as far as possible, just can significantly improve the magnitude setting of pipeline.But according to the processing method of common skew T, this threeway is difficult to machine-shaping.First, make the pipeline of connection parallel, the axis at three-way interface place must be parallel to each other, and can be referred to as parallel tee joint.Such three-way connection angle of bend is very large, need to reach 180 °, and during according to the processing method crooked pipeline of skew T, bending radius is larger, and can destroy stretched arm in advance.If adopt the mode of casting, exist cast member profile large, hidden danger of quality is many, the large problem of welding difficulty.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of moulding process of parallel tee joint, can process the parallel tee joint that the axis of three interfaces is parallel to each other, and moulding process is simple, efficiency is high, and crudy is good.
The present invention solves the problems of the technologies described above adopted technical scheme to be: the moulding process of parallel tee joint, the axis of three interfaces of described parallel tee joint is parallel to each other, parallel tee adapter body is partly that an angle of bend is the bend pipe of 180 °, wherein two interfaces of three-way connection lay respectively at the two ends of bend pipe, another interface is positioned at the middle part of bend pipe, and this interface towards towards the opposite with the interface at bend pipe two ends; Its forming method comprises the steps:
Step 1, adopt seamless steel pipe as the making material of three-way connection, the diameter of selected steel pipe is greater than the diameter of parallel tee adapter body part bend pipe.
Step 2, to adopt elbow pushing equipment that selected steel pipe pushing is become to angle of bend be the elbow of 180 °, and the plug preheat temperature of pushing equipment is 750-800 ℃, and elbow pushing temperature is 1000 ℃-1100 ℃.
Step 7, the elbow that is formed with convex closure is put into heating furnace be heated to 1000 ℃-1050 ℃, and constant temperature at least 30 minutes, take out and use shaping mould shaping afterwards, described shaping mould consists of two half modules, two relative faces of half module are provided with the shaping groove identical with parallel tee joint geometry, the elbow with convex closure after heating is placed in shaping groove, exerts pressure, to elbow squeezing shaping to two half modules.
A hole is opened on convex closure top on step 8, the elbow after shaping, then puts into heating furnace and is heated to 1000 ℃-1050 ℃, and use reaming fuse is the bore to three-way interface by the bore expansion on convex closure, forms parallel tee joint blank.
Step 9, parallel tee joint blank is repaired, polished, excision redundance also stays allowance.
Step 10, the parallel tee joint blank that trims is first carried out to normalized treatment with the temperature of 1040 ℃-1058 ℃, then carry out temper with the temperature of 680 ℃-730 ℃.
Step 11, the parallel tee joint blank of step 10 being handled well according to design size carry out the processing of end face, beveling machine, carry out afterwards Non-Destructive Testing, make parallel tee joint after qualified.
In selected seamless steel pipe, contain C 0.08-0.12%, Si 0.20-0.50%, Mn 0.30-0.60%, P≤0.020%, S≤0.010%, Cr 8.00-9.50%.
In step 2, first at the inwall of seamless steel pipe, evenly smear lubricant, and then seamless steel pipe is enclosed within on the plug of pushing equipment.
In step 2, during pushing shaped, adopt the mode of heating in medium frequency to carry out local heat to running to the steel pipe of core rod forming head, the temperature while making steel pipe by core rod forming head reaches 1000 ℃-1100 ℃.
In step 6, during compacting convex closure, the final pressure temperature of elbow is 800 ℃.
In step 7, during to elbow compacting shaping, final pressure temperature is 800 ℃.
The invention has the beneficial effects as follows: adopt first bend pipe processed, after on bend pipe, process arm mode, avoided damage arm, and can make the bend pipe that bending radius is very little.In two compacting half module matched moulds, to elbow two ends, exert pressure, can in extruding groove, extrude a convex closure, thereby process arm.Therefore, this molding mode needn't adopt punch die, has avoided using in bend pipe the inconvenience of punch die, and moulding process is simple, and efficiency is high.The parallel tee joint of making is formed in one, and tightness is good.The pipeline connecting is parallel to each other, and the I of spacing reaches 8mm, takes up room very little, can solve the cooling high density comb of boiler component or chemical industry and connect a difficult problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of parallel tee joint of the present invention.
Fig. 2 is the elbow schematic diagram that steel pipe pushing becomes.
Fig. 3 is the elbow schematic diagram that is formed with convex closure.
Fig. 4 is the schematic diagram of parallel tee joint blank.
Fig. 5 is the schematic diagram of compacting half module.
Fig. 6 is the pressing mode schematic diagram of convex closure on elbow.
Fig. 7 is the half module schematic diagram that forms shaping mould.
Mark in figure: 1, bend pipe, 2, interface, 3, elbow, 4, compacting half module, 401, forming tank, 402, extruding groove, 5, convex closure, 6, shaping mould, 601, shaping groove.
The specific embodiment
Illustrate by reference to the accompanying drawings embodiments of the present invention.
Parallel tee joint of the present invention as shown in Figure 1, the axis at its three interface 2 places is parallel to each other, parallel tee adapter body is partly that an angle of bend is the bend pipe 1 of 180 °, wherein two interfaces of three-way connection lay respectively at the two ends of bend pipe 1, another interface is positioned at the middle part of bend pipe 1, and this interface towards towards the opposite with the interface at bend pipe 1 two ends.
The moulding process of parallel tee joint, comprises the steps:
Step 1, adopt seamless steel pipe as the making material of three-way connection, the diameter of selected steel pipe is greater than the diameter of parallel tee adapter body part bend pipe 1, is generally 1.2-1.4 times of bend pipe 1 diameter.
Step 2, to adopt elbow pushing equipment that selected steel pipe pushing is become to angle of bend be as shown in Figure 2 the elbow 3 of 180 °, and the plug preheat temperature of pushing equipment is 750-800 ℃, and elbow pushing temperature is 1000 ℃-1100 ℃.During pushing shaped, adopt the mode of heating in medium frequency to carry out local heat to running to the steel pipe of core rod forming head, the temperature while making steel pipe by core rod forming head reaches 1000 ℃-1100 ℃.Adopt the mode of local heat can prevent that pushing from being other position compressive deformation of steel pipe, thereby improve the quality of products, and reached energy-conservation effect.
Step 7, the elbow 3 that is formed with convex closure 5 is put into heating furnace be heated to 1000 ℃-1050 ℃, and constant temperature at least 30 minutes, take out afterwards with shaping mould 6 shapings, described shaping mould 6 consists of two half modules, two relative faces of half module are provided with the shaping groove 601 identical with parallel tee joint geometry, and the elbow 3 with convex closure 5 after heating is placed in shaping groove 601, to two half modules, exerts pressure, to elbow squeezing shaping, final pressure temperature during compacting will be controlled at more than 800 ℃ equally.
A hole is opened on convex closure 5 tops on step 8, the elbow after shaping 3, can adopt the mode of boring or cutting, hold successfully and put into heating furnace behind hole and be heated to 1000 ℃-1050 ℃, with reaming fuse by the bore expansion on convex closure 5 bore to three-way interface, form parallel tee joint blank as shown in Figure 4; Reaming fuse can adopt the little version in large one end, one end, convenient operation, and raise the efficiency.
Step 9, parallel tee joint blank is repaired, polished, excision redundance also stays allowance.
Step 10, the parallel tee joint blank that trims is first carried out to normalized treatment with the temperature of 1040 ℃-1058 ℃, then carry out temper with the temperature of 680 ℃-730 ℃; When normalizing and tempering is processed, programming rate is less than 200 ℃/h, and the processing time is determined according to elbow wall thickness.
Step 11, the parallel tee joint blank of step 10 being handled well according to design size carry out the processing of end face, beveling machine, and processing mode carries out according to processing technology and the requirement of common pipe fitting, carries out afterwards Non-Destructive Testing, make parallel tee joint after qualified.
In selected seamless steel pipe, contain C 0.08-0.12%, Si 0.20-0.50%, Mn 0.30-0.60%, P≤0.020%, S≤0.010%, Cr 8.00-9.50%, the three-way connection intensity that this material is made is high, high temperature resistant, high pressure resistant, serviceability is good.
In step 2, first at the inwall of seamless steel pipe, evenly smear lubricant, and then seamless steel pipe is enclosed within on the plug of pushing equipment, can improve quality and the pushing efficiency of pushing bend pipe.
Claims (6)
1. the moulding process of parallel tee joint, it is characterized in that: the axis that three interfaces of described parallel tee joint (2) are located is parallel to each other, parallel tee adapter body is partly that an angle of bend is the bend pipe (1) of 180 °, wherein two interfaces of three-way connection lay respectively at the two ends of bend pipe (1), another interface is positioned at the middle part of bend pipe (1), and this interface towards towards the opposite with the interface at bend pipe (1) two ends; Its forming method comprises the steps:
Step 1, adopt seamless steel pipe as the making material of three-way connection, the diameter of selected steel pipe is greater than the diameter of parallel tee adapter body part bend pipe (1);
Step 2, to adopt elbow pushing equipment that selected steel pipe pushing is become to angle of bend be the elbow (3) of 180 °, and the plug preheat temperature of pushing equipment is 750-800 ℃, and elbow pushing temperature is 1000 ℃-1100 ℃;
Step 3, the good elbow of pushing (3) is first carried out to normalized treatment with the temperature of 1040 ℃-1058 ℃, then carry out temper with the temperature of 680 ℃-730 ℃;
Step 4, the elbow (3) that step 3 is handled well are put into heating furnace and are heated to 1000 ℃-1050 ℃, and constant temperature is more than 30 minutes, after taking-up, elbow (3) is flattened to 70-80% of original diameter along its bending radius direction;
Step 5, the elbow (3) after flattening is heated to 1000 ℃-1050 ℃, then be placed between two the compacting half modules (4) that make in advance, on the relative face of two compacting half modules (4), be provided with U-shaped forming tank (401), the degree of depth of forming tank (401) is half of finished product parallel tee adapter body part bend pipe (1) diameter, is provided with the extruding groove (402) corresponding with elbow (3) middle part body in one end of forming tank (401);
Step 6, to two compacting half modules (4) exert pressure, in two compacting half module (4) matched moulds, by the pressure-acting of press device in the mouth of pipe at elbow (3) two ends, to the extruding of extruding groove direction, make the body at elbow (3) middle part in extruding groove (402), form a convex closure (5) at elbow (3);
Step 7, the elbow (3) that is formed with convex closure (5) is put into heating furnace be heated to 1000 ℃-1050 ℃, and constant temperature at least 30 minutes, take out afterwards with shaping mould (6) shaping, described shaping mould (6) consists of two half modules, two relative faces of half module are provided with the shaping groove (601) identical with parallel tee joint geometry, the elbow with convex closure (5) after heating (3) is placed in shaping groove (601), exerts pressure, to elbow squeezing shaping to two half modules;
A hole is opened on convex closure (5) top on step 8, the elbow after shaping (3), then puts into heating furnace and is heated to 1000 ℃-1050 ℃, and use reaming fuse is the bore to three-way interface by the bore expansion on convex closure (5), forms parallel tee joint blank;
Step 9, parallel tee joint blank is repaired, polished, excision redundance also stays allowance;
Step 10, the parallel tee joint blank that trims is first carried out to normalized treatment with the temperature of 1040 ℃-1058 ℃, then carry out temper with the temperature of 680 ℃-730 ℃;
Step 11, the parallel tee joint blank of step 10 being handled well according to design size carry out the processing of end face, beveling machine, carry out afterwards Non-Destructive Testing, make parallel tee joint after qualified.
2. the moulding process of parallel tee joint as claimed in claim 1, is characterized in that: in selected seamless steel pipe, contain C 0.08-0.12%, Si 0.20-0.50%, Mn 0.30-0.60%, P≤0.020%, S≤0.010%, Cr 8.00-9.50%.
3. the moulding process of parallel tee joint as claimed in claim 1, is characterized in that: in step 2, first at the inwall of seamless steel pipe, evenly smear lubricant, and then seamless steel pipe is enclosed within on the plug of pushing equipment.
4. the moulding process of parallel tee joint as claimed in claim 1, it is characterized in that: in step 2, during pushing shaped, adopt the mode of heating in medium frequency to carry out local heat to running to the steel pipe of core rod forming head, the temperature while making steel pipe by core rod forming head reaches 1000 ℃-1100 ℃.
5. the moulding process of parallel tee joint as claimed in claim 1, is characterized in that: in step 6, during compacting convex closure, the final pressure temperature of elbow is 800 ℃.
6. the moulding process of parallel tee joint as claimed in claim 1, is characterized in that: in step 7, during to elbow compacting shaping, final pressure temperature is 800 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210293937.3A CN102773307B (en) | 2012-08-17 | 2012-08-17 | Forming process of parallel three-way connector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210293937.3A CN102773307B (en) | 2012-08-17 | 2012-08-17 | Forming process of parallel three-way connector |
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| CN102773307A CN102773307A (en) | 2012-11-14 |
| CN102773307B true CN102773307B (en) | 2014-04-02 |
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| CN201210293937.3A Active CN102773307B (en) | 2012-08-17 | 2012-08-17 | Forming process of parallel three-way connector |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394547B (en) * | 2013-07-30 | 2015-08-19 | 西安优耐特容器制造有限公司 | A kind of bend forming method |
| CN104942135B (en) * | 2015-06-19 | 2017-09-26 | 沧州隆泰迪管道科技有限公司 | Y type seam-less T-joint pressing process |
| CN104942041A (en) * | 2015-06-19 | 2015-09-30 | 沧州隆泰迪管道科技有限公司 | T-shaped large-diameter composite tee joint technology |
| CN108326075B (en) * | 2018-02-09 | 2019-09-24 | 岳阳筑盛阀门管道有限责任公司 | The cold forming process of nuclear power fast reactor pressure pipe threeway |
| CN111375990A (en) * | 2018-12-29 | 2020-07-07 | 上海新闵重型锻造有限公司 | Manufacturing method of S-shaped elbow |
| CN113953360B (en) * | 2021-10-21 | 2023-11-28 | 河北海航管道制造有限公司 | Manufacturing process and die for cold extrusion steel seamless Y-shaped tee joint |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB751571A (en) * | 1950-10-02 | 1956-06-27 | Andre Huet | An improved process for the manufacture of tubes with branch connections |
| GB1173031A (en) * | 1966-01-08 | 1969-12-03 | Steinmueller Gmbh L & C | A Method of Producing Tube Bifurcations |
| CN2174677Y (en) * | 1993-09-19 | 1994-08-17 | 肖恺伯 | Side-water coll wall seamless steel bifurcated pipe for boiler |
| CN1318439A (en) * | 2000-04-14 | 2001-10-24 | 阜新市压力容器管道公司 | Manufacture of Y-type seam-less T-joint |
| CN101693338A (en) * | 2009-10-26 | 2010-04-14 | 江阴海陆冶金设备制造有限公司 | Preparation method of reducing breeches tee joint |
-
2012
- 2012-08-17 CN CN201210293937.3A patent/CN102773307B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB751571A (en) * | 1950-10-02 | 1956-06-27 | Andre Huet | An improved process for the manufacture of tubes with branch connections |
| GB1173031A (en) * | 1966-01-08 | 1969-12-03 | Steinmueller Gmbh L & C | A Method of Producing Tube Bifurcations |
| CN2174677Y (en) * | 1993-09-19 | 1994-08-17 | 肖恺伯 | Side-water coll wall seamless steel bifurcated pipe for boiler |
| CN1318439A (en) * | 2000-04-14 | 2001-10-24 | 阜新市压力容器管道公司 | Manufacture of Y-type seam-less T-joint |
| CN101693338A (en) * | 2009-10-26 | 2010-04-14 | 江阴海陆冶金设备制造有限公司 | Preparation method of reducing breeches tee joint |
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| CN102773307A (en) | 2012-11-14 |
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