CN1045912C - Mold-extruding, expanding and forming process for multi-way pipe and its die equipment - Google Patents
Mold-extruding, expanding and forming process for multi-way pipe and its die equipment Download PDFInfo
- Publication number
- CN1045912C CN1045912C CN95120606A CN95120606A CN1045912C CN 1045912 C CN1045912 C CN 1045912C CN 95120606 A CN95120606 A CN 95120606A CN 95120606 A CN95120606 A CN 95120606A CN 1045912 C CN1045912 C CN 1045912C
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- drift
- bulging
- polyurethane rubber
- expanding
- extruding
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Abstract
The present invention relates to a metal plasticity forming method and a die which are particularly suitable for a molding, extruding, expanding and forming process of a multi-way pipe. The method of the present invention is very high pressure one-time forming by using a polyurethane rubber as an expanding and forming medium. A die of the present invention forms a horizontal die dividing structure, and uses a plane frame type molding, extruding, expanding and forming device which is driven by hydraulic pressure, and the molding, extruding, expanding and forming process can be realized on an ordinary oil hydraulic press. The die and the integral device have simple structure, and are easy to organize and manage. The present invention is particularly suitable for small-sized joints in the production of middle and small-sized manufacturers, and can produce various multi-way pipes in a high efficiency, low cost and high quality mode.
Description
The present invention relates to a kind of metal forming method and mould, be specially adapted to moulding of many siphunculus and squeeze the bulging occasion.
The U.S. just adopts polyurethane rubber to replace oil to succeed as bulging medium since the eighties, afterwards the copper alloy pipe was carried out bulging processing, can manufacture draw ratio greater than the required pipe joint of 2 running water system, and the formulation novel water pipe head standard CAN/CSA-B137.8Mg2 of the U.S., Aprill, 1992.But its bulging pressure is very not high, can only production plasticity copper alloy midget tube joint preferably.For the general material of plasticity, as ferrous metal, or medium-sized joint, can't produce with the method, can only adopt traditional oil pressure bulging or the method production that combines with machined of casting smithwelding, exist poor product quality, metal loss greatly, productivity ratio is not high and be not easy to shortcoming such as organization and administration.
At the shortcoming that above-mentioned prior art exists, the purpose of this invention is to provide a kind of by pipe being moulded production technology and the mould thereof that squeezes the many siphunculus of expansion forming large deformation.
The present invention implements by following technical measures: (one) its manufacturing process produces the super-pressure of 200-1000MPa for being bulging medium with the polyurethane rubber behind the rubber volume pressurized in moulding crowded bulging process.The hardness of polyurethane is HS60A-95A, and the diameter of polyurethane rubber rod is than the little 10-20% of pipe internal diameter.Metal is out of shape under the compound action of extruding and bulging, promptly in squeezing the process of expanding, the compression polyurethane rubber rod 24 that squeezes drift 21 ends of expanding produces bulging pressure when drift 21 advances, the shaft shoulder 22 extrusion tube blank both ends of the surface metallic walls 23 of squeezing the drift that expands simultaneously produce extruding force, and metal is out of shape under the compound action of bulging power and extruding force.25 places apply equilibrant force F at the arm end face, and the size of F is determined according to designing and calculating, is in the hydrostatic pressure effect of superelevation and suitable deviatoric state of stress to guarantee the deformed area metal.So just can greatly improve the distortion of materials ability, obtain many siphunculus of large deformation.According to the crowded bulging process of moulding of above-mentioned many siphunculus, the mould that matches is the horizontal parting structure, last lower cavity die 5 and 11 connects with upper and lower die backing plate 4,9 respectively, be fastened on then on the upper and lower template 3,8, template 8 connects with base plate 7, and base plate 7 connects with framework 12 by screw, and 1 is guide pillar, 2 is guide pin bushing, and 6 is blank.The drift 15 that squeeze to expand connects with punch holder 16, and logical drift retainer ring 17 connects with shaft coupling 18, connects with oil cylinder again, and balance drift 13 connects with oil cylinder 14.
The invention has the advantages that: (1) utilize mould of the present invention can high efficiency, low cost, produce many siphunculus in high quality.Owing to adopted hydraulically powered plane framework formula to mould crowded bulging device, on the conventional oil press, can realize moulding crowded bulging process, mould and package unit are simple in structure, are easy to organization and management, are particularly suitable for the medium and small joint of medium and small manufacturer production.(2) mechanical performance of products is superior, and surface quality is good.Because distortion is to carry out under hyperpressure, and metal streamline distributes along contour shape after the large deformation, and complete the remaining of its shape energy also can be consistent with external applied load during use, so the quality of product is good.(3) owing to adopt pipe to carry out the time processing shaping, the following process amount is less, productivity ratio is high, energy-saving material-saving.(4) device of Shi Yonging has versatility, as long as replacing die plate insert and drift are with regard to the joint of energy production plurality of specifications.Same secondary mould is as long as do some the pipe joint that small adjustment just can be produced the different size with same outer diameter as and same axis feature in producing.As push drift shaft shoulder place increase and decrease pad and just can change product manager's length, the length of change pipe and rubber bar can change the height of product arm.
Description of drawings is as follows:
Accompanying drawing siphunculus more than 1 is moulded and is squeezed the bulging schematic diagram
Accompanying drawing siphunculus more than 2 is moulded and is squeezed the bulging device front view
Accompanying drawing siphunculus more than 3 is moulded and is squeezed the bulging device vertical view.
Claims (2)
1. one kind is that many siphunculus of bulging medium are moulded and squeezed isocyanides shape technology with the polyurethane rubber, it is characterized by:
(1) with the polyurethane rubber is bulging medium, in moulding crowded bulging process, produces 200-1000MP behind its volume pressurized.Super-pressure, the hardness of polyurethane rubber is HS60A-95A, the diameter of polyurethane rubber rod is than the little 10%-20% of pipe internal diameter;
(2) metal is out of shape under the compound action of extruding and bulging, promptly in squeezing the process of expanding, squeeze drift (21) the end compression polyurethane rubber rod (24) that expands, produce bulging pressure when advancing at drift (21), the shaft shoulder (22) the extrusion tube blank both ends of the surface metallic walls (23) of squeezing the drift that expands simultaneously produce extruding force, and metal is out of shape under the compound action of bulging power and extruding force;
(3) apply equilibrant force F at a tube end (25);
(4) the unloading standard under the super-pressure effect, that is: after being shaped, it is static that the balance drift should keep, and after the crowded drift (21) that expands withdraws from pipe, just can withdraw from die cavity.
2. according to claim 1 is the mould of moulding crowded bulging process of many siphunculus of isocyanides shape medium with the polyurethane rubber, it is characterized by described mould is the horizontal parting structure, last lower cavity die (5) and (11) are respectively with last, lower cavity die backing plate (4), (9) connection is pressed, be fastened on then, lower bolster (3), (8) on, template (8) connects with base plate (7), base plate connects with framework (12) by screw, (1) is guide pillar, (2) be guide pin bushing, (6) be blank, squeeze the drift (15) that expands and connect, and connect with shaft coupling (18) by drift retainer ring (17) with punch holder (16), connect with oil cylinder, balance drift (13) connects with oil cylinder (14) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95120606A CN1045912C (en) | 1995-12-11 | 1995-12-11 | Mold-extruding, expanding and forming process for multi-way pipe and its die equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95120606A CN1045912C (en) | 1995-12-11 | 1995-12-11 | Mold-extruding, expanding and forming process for multi-way pipe and its die equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1131588A CN1131588A (en) | 1996-09-25 |
| CN1045912C true CN1045912C (en) | 1999-10-27 |
Family
ID=5082328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95120606A Expired - Fee Related CN1045912C (en) | 1995-12-11 | 1995-12-11 | Mold-extruding, expanding and forming process for multi-way pipe and its die equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1045912C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716716B (en) * | 2009-12-15 | 2011-04-20 | 中国船舶重工集团公司第七二五研究所 | Method for expanding titanium T-shaped pipe |
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| CN1092518C (en) * | 1999-05-04 | 2002-10-16 | 万立成 | Gelding liquor for female livestocks |
| CN100348364C (en) * | 2005-01-04 | 2007-11-14 | 上海昌强电站配件有限公司 | Clamp apparatus for machining heterotypic multiple passing through fixtures, and machining technique |
| CN100450655C (en) * | 2005-08-10 | 2009-01-14 | 杭州南方特种泵业有限公司 | Stainless steel centrifugal pump shell forming method |
| CN102962309A (en) * | 2012-11-27 | 2013-03-13 | 江苏麦涛机电设备有限公司 | Forming method and device for thin-wall T-pipe |
| CN103920789B (en) * | 2014-05-06 | 2015-08-05 | 哈尔滨工业大学 | A kind of elbow three-way pipe internal high pressure forming mould and method |
| CN104209388B (en) * | 2014-09-03 | 2016-07-06 | 河南新开源石化管道有限公司 | A kind of hydraulic press for straight tube being pressed into tee pipe fitting |
| CN104438409B (en) * | 2015-01-07 | 2017-02-22 | 营口昌信管业制造有限公司 | Pipe fitting cold extruding forming machine and forming technology thereof |
| CN106270100B (en) * | 2015-06-23 | 2018-09-04 | 宝山钢铁股份有限公司 | Hydro piercing method for flanging and sectional type punching flanging device |
| CN105156783A (en) * | 2015-08-27 | 2015-12-16 | 无锡贺邦金属制品有限公司 | Pipe joint part and machining methods thereof |
| CN105598249B (en) * | 2016-03-10 | 2017-09-12 | 哈尔滨奔马科技有限公司 | A kind of method and pipe fitting for obtaining high flanging hollow pipe fitting |
| US10773286B1 (en) | 2020-01-28 | 2020-09-15 | Prince Mohammad Bin Fahd University | Equal channel angular pressing of multi size copper wire |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2941972A1 (en) * | 1979-10-17 | 1981-04-30 | Thyssen Industrie Ag, 4300 Essen | Producing shaped hollow metal rear axle - by pressurising heated tube in split form by hot gas, gas may be applied explosively and form heated |
| CN87205452U (en) * | 1987-11-21 | 1988-07-06 | 陈锡涛 | Hydraulic bidirectional self-lock sealing casing roller |
| US4928509A (en) * | 1987-07-29 | 1990-05-29 | Mitsui & Co., Ltd. | Method for manufacturing a pipe with projections |
-
1995
- 1995-12-11 CN CN95120606A patent/CN1045912C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2941972A1 (en) * | 1979-10-17 | 1981-04-30 | Thyssen Industrie Ag, 4300 Essen | Producing shaped hollow metal rear axle - by pressurising heated tube in split form by hot gas, gas may be applied explosively and form heated |
| US4928509A (en) * | 1987-07-29 | 1990-05-29 | Mitsui & Co., Ltd. | Method for manufacturing a pipe with projections |
| CN87205452U (en) * | 1987-11-21 | 1988-07-06 | 陈锡涛 | Hydraulic bidirectional self-lock sealing casing roller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716716B (en) * | 2009-12-15 | 2011-04-20 | 中国船舶重工集团公司第七二五研究所 | Method for expanding titanium T-shaped pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1131588A (en) | 1996-09-25 |
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| CF01 | Termination of patent right due to non-payment of annual fee |