CN101574778B - Process of integrally shaping U-shaped bifurcated pipe - Google Patents
Process of integrally shaping U-shaped bifurcated pipe Download PDFInfo
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- CN101574778B CN101574778B CN2009100527803A CN200910052780A CN101574778B CN 101574778 B CN101574778 B CN 101574778B CN 2009100527803 A CN2009100527803 A CN 2009100527803A CN 200910052780 A CN200910052780 A CN 200910052780A CN 101574778 B CN101574778 B CN 101574778B
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- bifurcated pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Mechanical Engineering (AREA)
- Forging (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Table Equipment (AREA)
Abstract
The invention relates to the technical field of bifurcated pipe manufacturing, in particular to a process of integrally shaping a U-shaped bifurcated pipe. The invention is characterized by adopting the following steps of: (1) intermediate frequency heating: adopting an intermediate frequency heating furnace to heat blanked material to 850 to 1200 DEG C; (2) first-time integrally shaping: adoptinga Y-shaped forging mould to forge the material heated by the intermediate frequency furnace to a Y-shaped rod; (3) shaping by inner-hole drilling and milling: adopting a drilling device to drill a Y- shaped inner channel in the Y-shaped rod; and (4) shaping by bending: bending the V-shaped head of the Y-shaped rod to U-shape so as to obtain the U-shaped bifurcated pipe. Compared with the prior art, the process adopts technologies of die forging and extrusion to realize the integral shaping of U-shaped bifurcated pipe through die forging and extrusion. The pressure-resistance of the U-shaped bifurcated pipe manufactured by the process provided by the invention is greatly higher than that of U-shaped bifurcated pipe processed by welding and is not apt to crack; the manufacturing cost is justequal to 50 to 60 percent of that of the welding process; and the trouble of liquid penetration can be avoided due to no welding line.
Description
[technical field]
The present invention relates to the bifurcated pipe preparing technical field, relate in particular to a kind of integral forming technique of U type bifurcated pipe.
[background technology]
In the past, there is not integral fabrication technique, the domestic and international manufacturing industry of U type bifurcated pipe all adopts welding procedure, and on figure, indicate " welding is unsuitable ", because of the working environment of U type bifurcated pipe in station boiler is HTHP, temperature is greater than 400 ℃, and pressure is greater than 16Mpa, so welding procedure has the hidden danger of many qualitative factors:
One, welding stress is concentrated, and causes booster easily;
Two, be welded as manually-operated, weldquality guarantees by manual, so difficulty is quite big;
Three, make film, comment sheet difficulty height, require height, use gas shielded arc welding again with the argon arc welding bottoming, the cost height, man-hour is long, and formation is interior, and the pipe fitting through ball rate reduces by 20% at least to overlap, and through ball rate is a vital technical standard in the station boiler manufacturing; And directly use gas shielded arc welding, and because weld seam can not be welded to the tube wall bottom, the interlayer illusion is arranged so can form weld seam during film making, commented sheet to bring great difficulty.
In sum, the station boiler industry is a bottle neck in U type bifurcated pipe welding always, not only take a lot of work, time-consuming, quality is unstable, and repair rate, scrappage are very high.
[summary of the invention]
The present invention adopts the heating in medium frequency integral forming technique for overcoming the deficiencies in the prior art, prepares a kind of explosion, weldless U type bifurcated pipe of being difficult for.
For achieving the above object, the integral forming technique of a kind of U type bifurcated pipe of the present invention's design is characterized in that adopting following procedure of processing: (1) heating in medium frequency: adopt the material that it is good that the heating in medium frequency stove will fall to be heated to 850～1200 ℃; (2) global formation for the first time: adopt the die forging of Y die forging mould to become Y shape rod in the material after the heating in medium frequency; (3) interior hole drill mills moulding: adopt rig to get out Y shape internal channel Y shape rod; (4) bend moulding: the V-arrangement head with Y shape rod is bent into U-shaped again, forms U type shape bifurcated pipe.
Be 60～90s to bending the time that moulding finishes after heating in medium frequency is finished in the described procedure of processing.
The present invention compared with prior art adopts die forging, extrusion technique to make the whole die forging extrusion modling of U type bifurcated pipe, and withstand voltage properties is considerably beyond the welding bifurcated pipe, be difficult for explosion, and manufacturing cost has only the 50-60% of welding procedure, because of no weld seam, so needn't worry the sepage problem.
[Figure of description]
Fig. 1 is the structural representation of the U type bifurcated pipe of former welding procedure.
Fig. 2 is the structural representation of U type bifurcated pipe among the present invention.
Fig. 3 is the cut-away view that Y shape rod gets out the Y tube that forms behind the Y shape internal channel in the embodiment of the invention.
[specific embodiment]
The present invention will be further described below in conjunction with accompanying drawing.
Adopt die forging, squash type curving apparatus to make the whole die forging extrusion modling of U type bifurcated pipe, make Y pattern tool according to the size of U type bifurcated pipe to be processed earlier, referring to Fig. 2.
The good material that will fall adopts the heating in medium frequency stove to be heated to 850～1200 ℃, adopt the above-mentioned mould that is prepared into then, utilize the die forging of shaping mould moulding friction press to become Y shape rod, Y shape rod adopts rig to get out Y shape internal channel again, forms Y tube, and the V-arrangement head with Y tube adopts the squash type curving apparatus to be bent into U-shaped again, form U-shaped bifurcated pipe shape, referring to Fig. 1, in whole pipelining, blanking is finished after the heating in medium frequency to the time that is bent into the U-shaped pipe and is controlled in the 60-90s.
The U type bifurcated pipe that bends is gone back the available metal shot and is carried out ball blast, adopts heat treatment to carry out modified removal stress according to material then.
Through the explosion experiment confirm, withstand voltage considerably beyond the welding bifurcated pipe, and manufacturing cost has only the 50-60% of welding procedure.Die forging extrusion modling bifurcated pipe Burst Test Data is:
Claims (2)
1. the integral forming technique of a U type bifurcated pipe is characterized in that adopting following procedure of processing: (1) heating in medium frequency: adopt the material that it is good that the heating in medium frequency stove will fall to be heated to 850～1200 ℃; (2) global formation for the first time: adopt the die forging of Y die forging mould to become Y shape rod in the material after the heating in medium frequency; (3) interior hole drill mills moulding: adopt rig to get out Y shape internal channel Y shape rod; (4) bend moulding: the V-arrangement head with Y shape rod is bent into U-shaped again, forms U type bifurcated pipe.
2. the integral forming technique of U type bifurcated pipe as claimed in claim 1 is characterized in that: be 60～90s to bending the time that moulding finishes after heating in medium frequency is finished in the described procedure of processing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100527803A CN101574778B (en) | 2009-06-09 | 2009-06-09 | Process of integrally shaping U-shaped bifurcated pipe |
| PCT/CN2010/001024 WO2010142145A1 (en) | 2009-06-09 | 2010-07-09 | U-shaped bifurcated pipe integral-forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100527803A CN101574778B (en) | 2009-06-09 | 2009-06-09 | Process of integrally shaping U-shaped bifurcated pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101574778A CN101574778A (en) | 2009-11-11 |
| CN101574778B true CN101574778B (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100527803A Active CN101574778B (en) | 2009-06-09 | 2009-06-09 | Process of integrally shaping U-shaped bifurcated pipe |
Country Status (2)
| Country | Link |
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| CN (1) | CN101574778B (en) |
| WO (1) | WO2010142145A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101574778B (en) * | 2009-06-09 | 2010-08-04 | 上海昌强电站配件有限公司 | Process of integrally shaping U-shaped bifurcated pipe |
| CN104942530B (en) * | 2014-03-24 | 2017-06-06 | 亚猎士科技股份有限公司 | Integrally formed Al-alloy bicycle front fork manufacture method |
| CN103878290A (en) * | 2014-03-27 | 2014-06-25 | 昆山土山建设部件有限公司 | Step shaft machining method |
| CN105033155B (en) * | 2015-04-23 | 2017-03-01 | 山东神力索具有限公司 | A kind of electric railway processing technique of ears wedge clamp shell |
| CN106584019A (en) * | 2015-10-20 | 2017-04-26 | 良丰机械股份有限公司 | Manufacturing method of front forked arms and manufacturing method of front fork |
| CN105327970A (en) * | 2015-12-03 | 2016-02-17 | 应敏燕 | Red punching forming process for three-way pipe joint |
| CN106334775A (en) * | 2016-08-23 | 2017-01-18 | 哈尔滨汽轮机厂有限责任公司 | Forging method for three-way pipe |
| CN110899586B (en) * | 2019-11-26 | 2021-06-08 | 江阴市龙玉锻压有限公司 | All-fiber forging process for U-shaped forging piece |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60121030A (en) * | 1983-12-05 | 1985-06-28 | Toraji Mochizuki | Method of forming end of metallic tube to u-shaped articulated body |
| JP2784686B2 (en) * | 1990-09-27 | 1998-08-06 | 株式会社久保田鉄工所 | Manufacturing method of yoke member |
| US6049982A (en) * | 1998-05-22 | 2000-04-18 | Tseng; Shao-Chien | Integrated molding method for the front fork of a bicycle |
| JP2006181577A (en) * | 2004-12-24 | 2006-07-13 | Denso Corp | Method for producing piping parts for high pressure and piping parts for high pressure |
| CN100591437C (en) * | 2008-05-07 | 2010-02-24 | 四川振强模锻有限公司 | U shaped suspension clamp swaging technique |
| CN101574778B (en) * | 2009-06-09 | 2010-08-04 | 上海昌强电站配件有限公司 | Process of integrally shaping U-shaped bifurcated pipe |
-
2009
- 2009-06-09 CN CN2009100527803A patent/CN101574778B/en active Active
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2010
- 2010-07-09 WO PCT/CN2010/001024 patent/WO2010142145A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2010142145A1 (en) | 2010-12-16 |
| CN101574778A (en) | 2009-11-11 |
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Address after: Songjiang District Shanghai Yexie town 201608 Huayuan Road South Patentee after: Shanghai Chang Qiang industrial Polytron Technologies Inc Address before: Songjiang District Shanghai Yexie town 201608 Huayuan Road South Patentee before: Shanghai Changqiang Power Station Fittings Co.,Ltd. |
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