CN102266876A - Forming process and mould of seamless fork-shaped pipe - Google Patents
Forming process and mould of seamless fork-shaped pipe Download PDFInfo
- Publication number
- CN102266876A CN102266876A CN2011101841142A CN201110184114A CN102266876A CN 102266876 A CN102266876 A CN 102266876A CN 2011101841142 A CN2011101841142 A CN 2011101841142A CN 201110184114 A CN201110184114 A CN 201110184114A CN 102266876 A CN102266876 A CN 102266876A
- Authority
- CN
- China
- Prior art keywords
- pipe
- breeches pipe
- seamless
- mould
- fork
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses a forming process of a seamless fork-shaped pipe, comprising the following steps of: (1) bending, heating a seamless fork-shaped steel pipe via middle frequency and manufacturing an elbow in 160-200 degrees; (2) shaping the manufactured elbow and enabling the center distance of the elbow to basically accord with the size of the centre distance of the fork-shaped pipe; (3) flattening the shaped blanks and enabling the pipe diameter B of two branch pipes to be greater than or equal to the outer diameter of the branch pipe of the fork-shaped pipe by 1-2 mm; (4) extruding and forming, placing the heated pipe blanks into a forming mould for extruding and forming, enabling the outer diameter and the length of two branch pipes of the fork-shaped pipe to accord with the design demand, and forming bulges on the outer arc at the same time; and (5) turning and processing, cutting a cover protruding from the circular arc at the upper end part of the fork-shaped pipe and forming a main pipe interface. The seamless steel pipe is used as the raw material, and the mould is used for forming, thus the difficulty of forming the fork-shaped pipe is solved. The invention has the advantages of improving the forming quality and the finished product ratio of the fork-shaped pipe, effectively reducing the manufacture procedures, saving materials, and reducing the manufacture cost.
Description
Technical field
The invention belongs to the breeches pipe technical field, what relate generally to is a kind of seamless breeches pipe moulding process and mould.
Background technology
Breeches pipe also claims Y-pipe, Y-branch fitting, the threeway of Y shape, and the transition that to be used for a pipe bifurcated be two parallel pipes connects, and is the important accessory of station boiler heating part water-cooling wall.According to the service condition difference, material has carbon steel (20G), steel alloy (12Cr1MoV, 15CrMo, P22, P91) etc.
Water-cooling wall is the main heated portion of boiler, and it forms evaporating heating surface by number row steel pipe, and around the boiler furnace that is laid in, breeches pipe promptly is the accessory that connects these steel pipes.Water or the steam of its inside for flowing, the external world accepts the heat of boiler furnace flame.The effect of water-cooling wall is the radiations heat energy that absorbs thermal-flame in the burner hearth or flue gas, produces steam or hot water in pipe, and reduces temperature of furnace wall, protects furnace wall.Have in the boiler 40～50% in addition more heat absorbed by water-cooling wall.
Because breeches pipe service condition harshness, so corresponding very high to its quality requirement, its transition portion and body must not adopt the mode of welding to make.Traditional manufacturing process is to adopt the method for forging, and forges into earlier blank, and through boring, crooked, machined, about ten three process are made finished product (as shown in Figure 5) altogether again.Not only difficult forming is big, and the machined workload is big, and the manufacturing cycle is long, and stock utilization is low.Because its structure is special, very easily cause overproof in the processing and part is scrapped, yield rate is generally about 70%～80%.
Summary of the invention
The objective of the invention is to propose a kind of seamless breeches pipe moulding process and mould.It is raw material with the seamless steel pipe, adopts mould to carry out moulding, has solved a breeches pipe moulding difficult problem.Not only improve the Forming Quality and the yield rate of breeches pipe, and effectively reduced manufacturing process, saved material, reduced manufacturing cost.
The present invention realizes that the technical scheme that above-mentioned purpose is taked is: the moulding process of breeches pipe comprises
1, bending: seamless steel pipe through heating in medium frequency, is made 160-200 ° of elbow;
2, the elbow of making is carried out shaping, make the centre-to-centre spacing of elbow meet the size of breeches pipe centre-to-centre spacing substantially;
3, flatten: orthopedic blank is flattened, make the caliber B 〉=breeches pipe of two arms prop up external diameter of pipe 1～2mm;
4, extrusion modling: the pipe after will heating is put the mould extrusion modling into, and two externals diameter of pipe, length of breeches pipe are adhered to specification, and becomes bulge in outer arcuate simultaneously;
5, turning processing: be person in charge's interface after cutting the lid of breeches pipe upper end circular arc projection.
In the above-mentioned bending operation, elbow adopts intermediate frequency to pick technology and makes, 1.1～1.4 times of elbow external diameter ≈ breeches pipe arm diameter, and the wall thickness of wall thickness 〉=breeches pipe, the length of run of elbow is greater than the length of run 5～10mm of breeches pipe.
The above-mentioned seamless breeches pipe moulding process mould of a kind of realization comprises symmetrically arranged top board up and down, lower platen, upper pillar stand, lower pillar stand, cope match-plate pattern, lower bolster and upper reset spring, following back-moving spring, one end of upper pillar stand is fixedlyed connected with top board, the other end passes cope match-plate pattern fixedlys connected with the external mold of a side, one end of lower pillar stand is fixedlyed connected with lower platen, the other end passes lower bolster fixedlys connected with the external mold of opposite side, at upper pillar stand, be equipped with back-moving spring on the lower pillar stand, be connected with spud pile at cope match-plate pattern and lower bolster, on the spud pile that is positioned at core one side, fairlead be housed; Shaping mould comprises upper and lower external mold and core, and core is positioned in the middle of the upper and lower external mold, and upper and lower external mold is connected with upper pillar stand, lower pillar stand respectively, fixedlys connected with fairlead in the outside of core.
Guide plate and interior guide plate outside two outsides of described shaping mould are respectively arranged with, wherein interior guide plate is two, being symmetricly set on two outsides of shaping mould and being close to shaping mould, fixedlys connected with the upside external mold in the upper end, and the outside is close to outer guide plate and is slided up and down in the guide plate outside; Outer guide plate is two also, is symmetricly set on two outsides of interior guide plate and is close to interior guide plate, fixedlys connected with lower bolster in the lower end.
It is raw material that the present invention adopts seamless steel pipe, and the mode of utilizing mould to carry out moulding on hydraulic press has better solved the moulding difficult problem of breeches pipe, compared with prior art, has the following advantages:
1, reduced manufacturing process.Shaping mould is a split-type structural, simplifies the structure, and an extrusion modling makes arm and is responsible for moulding simultaneously;
2, greatly reduce the accessory cost.With the DN50 product is example, and the breeches pipe price of forging process production is about about 900 yuan, and the breeches pipe price that the present invention produces only is about 400 yuan, and cost reduces more than 50%;
3, product structure more becomes reasonable.Owing to adopt the seamless steel pipe manufacturing, reduced integral rigidity, reduced equipment temperature and pressure in service and changed the stress that causes and concentrate, prolonged service life of equipment;
4, improve yield rate, saved material.Stock utilization is more than 80%, and yield rate more meets the energy-saving and environmental protection requirement more than 98%.
5, reduced labour intensity.Reduce heavy forging process, alleviated the labour intensity of making greatly, correspondingly also reduced environmental pollutions such as noise, flue dust.
6, Forming Quality is good.The workpiece smooth in appearance of extrusion modling is clean and tidy, and the lines flow smoothly, and the size conforms designing requirement has avoided gauffer, crackle, pit, distortion etc. to influence the defective of product quality.
Description of drawings
Fig. 1 is a mould structure schematic diagram of the present invention.
Fig. 2 is the side cutaway view of Fig. 1
Fig. 3 is the top plan view of Fig. 1.
Fig. 4 is a shaping mould critical piece structural representation of the present invention.
Fig. 5 is the upward view of Fig. 4.
Fig. 6 is a molding procedure schematic diagram of the present invention.
Fig. 7 is the structural representation of a kind of breeches pipe of the present invention.
Fig. 8 is the structural representation of bending operation of the present invention.
Fig. 9 is the structural representation of blank after the shaping of the present invention.
Figure 10 flattens the structural representation of back blank for the present invention.
Figure 11 is the blahk structure schematic diagram after the extrusion modling of the present invention.
Among the figure: 1, top board, 2, upper pillar stand, 3, upper reset spring, 4, cope match-plate pattern, 5, breeches pipe, 6, external mold, 7, spud pile, 8, core, 9, fairlead, 10, lower bolster, 11, lower pillar stand, 12, back-moving spring down, 13, lower platen, 14, outer guide plate, 15, interior guide plate, 16, gripper shoe.State signal before A, the extrusion modling, the state signal after B, the extrusion modling, the centre-to-centre spacing of A1, elbow, the size after B1, blank flatten.
The specific embodiment
In conjunction with the accompanying drawings, it is as follows to provide embodiments of the invention:
As Fig. 1 in conjunction with shown in Fig. 2-3: the described a kind of breeches pipe mould of present embodiment comprises up and down symmetrically arranged top board 1, lower platen 13, upper pillar stand 2, lower pillar stand 11, cope match-plate pattern 4, lower bolster 10 and upper reset spring 3, following back-moving spring 12, one end of upper pillar stand 2 is fixedlyed connected with top board 1, the other end passes cope match-plate pattern 4 fixedlys connected with the external mold 6 of a side, one end of lower pillar stand 11 is fixedlyed connected with lower platen 13, the other end passes lower bolster 10 fixedlys connected with the external mold 6 of opposite side, on upper pillar stand 2, be provided with upper reset spring 3, lower pillar stand 11 is provided with down back-moving spring 12, steady stability when guaranteeing moulding, upper pillar stand 2, lower pillar stand 11 is provided with two respectively, is equipped with back-moving spring on every root post.Cope match-plate pattern 4 is fixedlyed connected by four spud piles 7 with lower bolster 10, and fairlead 9 is equipped with being positioned on two spud piles 7 of core 8 one sides in each two of both sides.Shaping mould is between cope match-plate pattern 4, lower bolster 10 and spud pile 7, this shaping mould is a split-type structural, shown in Fig. 4-5: constitute by external mold 6 and core 8, external mold 6 is two up and down, the outer shape of its shape and breeches pipe 5 matches, be connected with upper pillar stand 2, lower pillar stand 11 respectively, core 8 is positioned in the middle of the external mold 6, matches with the middle part shape of breeches pipe 5.Fixedlying connected with fairlead 9 in the outside of core 8, can move up and down at work with external mold.Guide plate 14 and interior guide plate 15 outside two outsides of shaping mould are respectively arranged with, in order to guarantee the centering uniformity of external mold 6, core 8, wherein interior guide plate 15 is two, is symmetricly set on two outsides of shaping mould, fixedly connected with external mold in top, the bottom was close in when work and shaping mould; Outer guide plate 14 is two also, be symmetrical arranged two outsides of guide plate 14 outside and be close in guide plate 15, fixedly connected with lower bolster 10 in the lower end, both sides are respectively established two gripper shoes 16 and are strengthened fixing.By inside and outside guide plate and two kinds of guiders of pilot sleeve, solve the orientation problem of external mold and internal mold, improve machining accuracy.
When the present invention uses,, flatten to breeches pipe arm diameter dimension with making 160～200 ° of elbows after the seamless steel pipe heating.Mould is placed on the hydraulic press, and centering is placed as far as possible, notes centering, checks each size.Mould will be put into after the heating of pipe blank, the operation hydraulic press pushes (as shown in Figure 6), (A partly is the signal of the state before the extrusion modling to make two arm undergauges of breeches pipe, B is the state signal after the extrusion modling), adhere to specification, a drum protruding bulge in the top of elbow circular arc cuts the bulge lid when metalworking simultaneously, leaves groove and is person in charge's interface.Note pipe distortion situation in the extrusion process, note abnormalities and to stop operation immediately, search reason, work on again after fixing a breakdown; Go up lower platen after compacting is finished and set back under action of reset spring, mould opens, and takes out workpiece while hot.The initial workpiece product of moulding should carry out size, appearance test by quality requirement, confirms can proceed after errorless to produce (dimension control should be carried out after workpiece temperature is reduced to room temperature).According to the drawing requirement, carry out i.e. as shown in Figure 7 the breeches pipe product of turning processing.
The technological process of present embodiment is as follows:
1, bending: seamless steel pipe through heating in medium frequency, is made about 160-200 ° elbow (as shown in Figure 8).Elbow adopts intermediate frequency to pick technology and makes, the elbow external diameter is equivalent to 1.1～1.4 times of breeches pipe diameter, the wall thickness of the actual requirement of wall thickness 〉=breeches pipe, the length of run of elbow (according to the characteristics of elbow length of run, emphasis is considered the length of run of inner arc) is greater than about the length of run 5～10mm of breeches pipe.Because the centre-to-centre spacing of breeches pipe is generally all smaller, push-making angle fitting is selected less bending radius for use as far as possible under the condition that technology allows.
2, shaping: owing to be subjected to the restriction of technology, the requirement that the centre-to-centre spacing of elbow " A1 " does not generally reach breeches pipe, the size (as shown in Figure 9) that its centre-to-centre spacing shaping need be required to breeches pipe.If elbow centre-to-centre spacing and breeches pipe centre-to-centre spacing differ too much, can carry out shaping at twice.
3, flatten: orthopedic blank is flattened, and B1 〉=breeches pipe diameter is for next extrusion modling is prepared (as shown in figure 10).Answer the size of strict control " B1 " during flattening, can be slightly larger than breeches pipe and prop up external diameter of pipe 1～2mm, do not allow minus tolerance.Otherwise when extruding,, cause waste product because unstability produces fold.
4, extrusion modling: with above-mentioned mould extrusion modling (shown in Fig. 1-5).This operation is the critical process of breeches pipe moulding, by extruding, two externals diameter of pipe, length of breeches pipe is adhered to specification, and the upper end has circular arc projection (as shown in figure 11).Concrete technological process is as follows:
(1) installation forming mould: mould is placed on the hydraulic press, and centering is placed as far as possible, notes centering, checks each size.Movable part should move freely, and it is lubricated to add graphite powder in case of necessity;
(2) extruding: with heating of pipe blank to 800～1100 ℃ (800～950 ℃ of carbon steels, 950～1100 ℃ of steel alloys) put mould into, the operation hydraulic press pushes, note pipe distortion situation in the extrusion process, note abnormalities and to stop operation immediately, search reason, work on again after fixing a breakdown;
(3) material returned: go up lower platen after compacting is finished and set back under action of reset spring, mould opens, and takes out workpiece while hot;
(4) first item inspection: the initial workpiece product of moulding should carry out size, appearance test by quality requirement, confirms can proceed after errorless to produce.Dimension control should be carried out after workpiece temperature is reduced to room temperature.
5, turning processing: (, should heat-treat on request before the metalworking) as the steel alloy product.Promptly form person in charge's interface after cutting breeches pipe upper end circular arc projection lid, and the whole grooves of turning by drawing.
Claims (8)
1. seamless breeches pipe moulding process, it is characterized in that: the breeches pipe moulding process may further comprise the steps:
(1), bending: seamless steel pipe through heating in medium frequency, is made 160-200 ° of elbow;
(2), the elbow of making is carried out shaping, make the centre-to-centre spacing of elbow meet the size of breeches pipe centre-to-centre spacing substantially;
(3), flatten: orthopedic blank is flattened, make the caliber B 〉=breeches pipe of two arms prop up external diameter of pipe 1～2mm;
(4), extrusion modling: the pipe after will heating is put the mould extrusion modling into, and two externals diameter of pipe, length of breeches pipe are adhered to specification, and becomes bulge in outer arcuate simultaneously;
(5), turning processing: be person in charge's interface after cutting the lid of breeches pipe upper end circular arc projection.
2. seamless breeches pipe moulding process according to claim 1, it is characterized in that: in described bending operation, elbow adopts intermediate frequency to pick technology and makes, 1.1～1.4 times of elbow external diameter ≈ breeches pipe arm diameter, the wall thickness of wall thickness 〉=breeches pipe, the length of run of elbow is greater than the length of run 5～10mm of breeches pipe.
3. seamless breeches pipe moulding process according to claim 1 is characterized in that: in the described flattening process, and the blank dimension B1 after the flattening 〉=breeches pipe diameter 1～2mm.
4. mould of realizing above-mentioned seamless breeches pipe moulding process, it is characterized in that: mould comprises symmetrically arranged top board (1) up and down, lower platen (13), upper pillar stand (2), lower pillar stand (11), cope match-plate pattern (4), lower bolster (10) and upper reset spring (3), following back-moving spring (12), one end of upper pillar stand is fixedlyed connected with top board, the other end passes cope match-plate pattern fixedlys connected with the external mold of a side, one end of lower pillar stand is fixedlyed connected with lower platen, the other end passes lower bolster fixedlys connected with the external mold of opposite side, at upper pillar stand, be equipped with back-moving spring on the lower pillar stand, be connected with spud pile (7) at cope match-plate pattern and lower bolster, fairlead (9) is housed on the spud pile that is positioned at core one side; Shaping mould comprises upper and lower external mold (6) and core (8), and core is positioned in the middle of the upper and lower external mold, and upper and lower external mold is connected with upper pillar stand, lower pillar stand respectively, fixedlys connected with fairlead in the outside of core.
5. seamless breeches pipe mould according to claim 4, it is characterized in that: guide plate (14) and interior guide plate (15) outside two outsides of described shaping mould are respectively arranged with, wherein interior guide plate is two, be symmetricly set on two outsides of shaping mould and be close to shaping mould, fixedly connected with upside external mold (6) in the upper end, the outside is close to outer guide plate and is slided up and down in the guide plate (15) outside; Outer guide plate (14) is two also, is symmetricly set on two outsides of interior guide plate (15) and is close to interior guide plate (14), fixedlys connected with lower bolster (10) in the lower end.
6. seamless breeches pipe mould according to claim 4 is characterized in that: described upper pillar stand (2), lower pillar stand (11) are provided with two respectively, are equipped with back-moving spring on every root post.
7. seamless breeches pipe mould according to claim 4 is characterized in that: described spud pile (7) is four.
8. seamless breeches pipe mould according to claim 4 is characterized in that: described outer guide plate (14) both sides are respectively established two gripper shoes (16) and are strengthened fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110184114 CN102266876B (en) | 2011-07-04 | 2011-07-04 | Forming process and mould of seamless fork-shaped pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110184114 CN102266876B (en) | 2011-07-04 | 2011-07-04 | Forming process and mould of seamless fork-shaped pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102266876A true CN102266876A (en) | 2011-12-07 |
| CN102266876B CN102266876B (en) | 2013-08-28 |
Family
ID=45049442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110184114 Active CN102266876B (en) | 2011-07-04 | 2011-07-04 | Forming process and mould of seamless fork-shaped pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102266876B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601896A (en) * | 2012-03-14 | 2012-07-25 | 厦门华盛弘精密模具有限公司 | U-shaped pipe mould device |
| 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 |
| CN103394547A (en) * | 2013-07-30 | 2013-11-20 | 西安优耐特容器制造有限公司 | Elbow forming method |
| CN104001760A (en) * | 2013-02-21 | 2014-08-27 | 中国石油化工股份有限公司 | Expansion corrugation pipe end shaping device and method |
| CN106142246A (en) * | 2016-07-29 | 2016-11-23 | 广德县灵峰竹木工艺品有限公司 | Energy-saving bent for shaping equipment |
| CN106217522A (en) * | 2016-07-29 | 2016-12-14 | 广德县灵峰竹木工艺品有限公司 | Bent for shaping device |
| CN106239653A (en) * | 2016-07-29 | 2016-12-21 | 广德县灵峰竹木工艺品有限公司 | Removable shaper |
| CN106239654A (en) * | 2016-07-29 | 2016-12-21 | 广德县灵峰竹木工艺品有限公司 | Energy-saving bending drying and shaping device |
| CN108326075A (en) * | 2018-02-09 | 2018-07-27 | 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 |
| CN110280701A (en) * | 2019-06-21 | 2019-09-27 | 无锡华光锅炉股份有限公司 | A kind of Y shape bitch device for automatically molding and processing technology |
| CN113953360A (en) * | 2021-10-21 | 2022-01-21 | 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 |
| CN114289575A (en) * | 2021-12-27 | 2022-04-08 | 徐州达一锻压设备有限公司 | Integrated front fork anti-concave forming device and front fork produced by same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB758830A (en) * | 1953-09-12 | 1956-10-10 | Edwin Stanley Freeman | A new or improved process of bending tubes |
| JPS58122129A (en) * | 1982-01-16 | 1983-07-20 | Sumitomo Metal Ind Ltd | Manufacture of bent pipe with branch |
| CN201534182U (en) * | 2009-10-26 | 2010-07-28 | 江阴海陆冶金设备制造有限公司 | Extrusion forming die of reducing trouser-shaped tee |
| CN201625680U (en) * | 2010-03-26 | 2010-11-10 | 李镇南 | Special-shaped three-way one-step molding die |
| CN202162227U (en) * | 2011-07-04 | 2012-03-14 | 偃师华科管件有限责任公司 | Seamless forked pipe forming mould |
-
2011
- 2011-07-04 CN CN 201110184114 patent/CN102266876B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB758830A (en) * | 1953-09-12 | 1956-10-10 | Edwin Stanley Freeman | A new or improved process of bending tubes |
| JPS58122129A (en) * | 1982-01-16 | 1983-07-20 | Sumitomo Metal Ind Ltd | Manufacture of bent pipe with branch |
| CN201534182U (en) * | 2009-10-26 | 2010-07-28 | 江阴海陆冶金设备制造有限公司 | Extrusion forming die of reducing trouser-shaped tee |
| CN201625680U (en) * | 2010-03-26 | 2010-11-10 | 李镇南 | Special-shaped three-way one-step molding die |
| CN202162227U (en) * | 2011-07-04 | 2012-03-14 | 偃师华科管件有限责任公司 | Seamless forked pipe forming mould |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601896A (en) * | 2012-03-14 | 2012-07-25 | 厦门华盛弘精密模具有限公司 | U-shaped pipe mould device |
| CN104001760A (en) * | 2013-02-21 | 2014-08-27 | 中国石油化工股份有限公司 | Expansion corrugation pipe end shaping device and method |
| CN104001760B (en) * | 2013-02-21 | 2016-09-21 | 中国石油化工股份有限公司 | A kind of expansion ripple pipe end apparatus for shaping and method |
| CN103394547A (en) * | 2013-07-30 | 2013-11-20 | 西安优耐特容器制造有限公司 | Elbow forming method |
| 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 |
| CN106239654A (en) * | 2016-07-29 | 2016-12-21 | 广德县灵峰竹木工艺品有限公司 | Energy-saving bending drying and shaping device |
| CN106239653A (en) * | 2016-07-29 | 2016-12-21 | 广德县灵峰竹木工艺品有限公司 | Removable shaper |
| CN106217522A (en) * | 2016-07-29 | 2016-12-14 | 广德县灵峰竹木工艺品有限公司 | Bent for shaping device |
| CN106142246A (en) * | 2016-07-29 | 2016-11-23 | 广德县灵峰竹木工艺品有限公司 | Energy-saving bent for shaping equipment |
| CN108326075A (en) * | 2018-02-09 | 2018-07-27 | 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 |
| 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 |
| CN110280701A (en) * | 2019-06-21 | 2019-09-27 | 无锡华光锅炉股份有限公司 | A kind of Y shape bitch device for automatically molding and processing technology |
| CN113953360A (en) * | 2021-10-21 | 2022-01-21 | 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 |
| 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 |
| CN114289575A (en) * | 2021-12-27 | 2022-04-08 | 徐州达一锻压设备有限公司 | Integrated front fork anti-concave forming device and front fork produced by same |
| CN114289575B (en) * | 2021-12-27 | 2022-10-11 | 徐州达一锻压设备有限公司 | Integrated front fork anti-concave forming device and front fork produced by same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102266876B (en) | 2013-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102266876B (en) | Forming process and mould of seamless fork-shaped pipe | |
| CN101695739B (en) | Forging process of large tee and large skew tee | |
| CN100564981C (en) | Hot segment of bent pipe of main pipeline of reactor and manufacture method thereof | |
| CN105107917A (en) | Storage tank hemispherical shell forming method for improving mechanical performance | |
| CN103659167A (en) | Pipe fitting machining method | |
| CN201516449U (en) | High-strength straight seam butt welding three-way die | |
| CN102974731A (en) | Forging method for integral sealing head for nuclear power | |
| CN102218642A (en) | Manufacturing method of thick wall steel pipe with small radius-thickness ratio used for building structure | |
| CN102744284A (en) | High-pressure elbow pipe billet heat-pushing temperature pressure shaping method | |
| CN104259362A (en) | Nuclear reactor integrating lower end socket integrity profiling and forging method | |
| CN102172734B (en) | Rolling blank making method for automobile transmission gear ring | |
| CN103230955A (en) | Hot extrusion forming die of light alloy horn-shaped pipe fitting | |
| CN108421839A (en) | A kind of flat-bulb steel diplopore model extrusion method | |
| CN101987343A (en) | Forging method of conical cylinder body of nuclear power equipment | |
| CN104439972A (en) | Manufacturing method for planing large converter into two segments | |
| CN101693338B (en) | Preparation method of reducing breeches tee joint | |
| CN202162227U (en) | Seamless forked pipe forming mould | |
| CN201380258Y (en) | Forming device for straight-edged tapered cylinder forging of nuclear power evaporator | |
| CN102430626B (en) | Thin-wall equant (small)-radius elbow secondary forming device and secondary forming method thereof | |
| CN110479947B (en) | Copying forging method for transition section of hydrogenation reactor | |
| CN101596572A (en) | The manufacturing technique method of axle housing stiffening ring | |
| CN101745782A (en) | Method for manufacturing hot segment of bent pipe of main pipeline of reactor | |
| CN103231224B (en) | The method of straight tube tube blank inner wall built-up welding aftershaping 90 ° of bend pipes | |
| CN104525814A (en) | Mold tooling for straight pipe forging stock for nuclear main pipe and forging method | |
| CN112775633B (en) | Machining method of spiral baffle plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 471922 Gu Xian Zhen Gu Xian Cun, Yanshi City, Luoyang City, Henan Province Patentee after: Henan Huake Heavy Industry Co.,Ltd. Address before: 471922 Gu Xian Zhen Gu Xian Cun, Yanshi City, Luoyang City, Henan Province Patentee before: YANSHI HUAKE PIPE FITTINGS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |