CN104014993B - Nuclear main pipeline manufacturing method - Google Patents
Nuclear main pipeline manufacturing method Download PDFInfo
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- CN104014993B CN104014993B CN201410234576.4A CN201410234576A CN104014993B CN 104014993 B CN104014993 B CN 104014993B CN 201410234576 A CN201410234576 A CN 201410234576A CN 104014993 B CN104014993 B CN 104014993B
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- steel pipe
- tons
- mould
- main pipeline
- steel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/29—Making branched pieces, e.g. T-pieces
- B21C37/292—Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, rods or tubes
- B21C23/085—Making tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, rods or tubes
- B21C23/12—Extruding bent tubes or rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A nuclear main pipeline manufacturing method includes the steps of conducting upsetting and axial hole punching on a billet through a blank making machine with the pressure of 16,000 tons, pulling the billet through a vertical extruding machine with the extruding force of 50,000 tons so as to increase the length of the billet and obtain a steel pipe, conducting extrusion on the steel pipe through a branch pipe extrusion forming die and the vertical extruding machine with the extruding force of 50,000 tons so as to form a branch pipe, and bending and deforming the steel pipe through a bending forming die and the vertical extruding machine with the extruding force of 50,000 tons. The included angle formed by bending the steel pipe ranges from 60 degrees to 70 degrees. By means of the manufacturing method of conducting perpendicular extrusion billet manufacturing, axial material supplementation and radial extrusion forming after upsetting and hole punching are conducted, the manufacturing cycle can be shortened to 3 months from 6.5 months, the weight of steel ingots which are used is reduced to 25 tons from 119 tons, the weight of forge pieces is reduced to 16 tons from 68 tons, the use ratio of forge piece materials is increased to 50% from 11.8%, energy consumption is greatly lowered to be one tenth of the original energy consumption, and cost reduction achieved due to energy saving and manufacturing cycle shortening is more considerable.
Description
Technical field
The invention belongs to the process for forging technical field of core main pipeline, it is related to a kind of vertical extruding base, axial direction
The core main pipeline manufacture method that feed supplement, radial compression shape.
Background technology
Ap1000 core main pipeline is the nuclear safety one-level key equipment of ap1000 nuclear power station, for guaranteeing ap1000 nuclear power station
Security reliability and nuclear power station bulk life time, US Westinghouse company proposes sternly to the design of ap1000 main pipeline and manufacturing technology
The technical requirements of lattice, the manufacturing technology of ap1000 main pipeline product is the technical barrier generally acknowledged in the world, 45 ° each other of two of which
The forging of the arm at angle controls always one of difficult point.Because the complicated shape of nuclear forging and property require, for a long time with
Carry out the limit FMT that a few countries such as only Japanese, French in the world grasp nuclear power rustless steel main pipeline and complex pipes.
Domestic only double, Bohai Sea boats and ships heavy industry develops nuclear power rustless steel main pipeline product piece, and one develops full-scale simulation again tests
Certificate.But, it is all using casting or forging two kinds of process manufactures of solid forging at present both at home and abroad, using tradition forging work
Skill molding main nuclear power pipeline solid forging:
Forging process typically requires 10 fire and just can complete, and the forging cycle is up to 36～38 days, and during machining, natural law is (from forging
Part is to finished parts) about need 5 months (lathe 30 days, deep hole 20 days, numerical control borer 100 days), i.e. total 6 first quarter moons of cycle；
Forging energy consumption (rough estimate): gas consumption 10km3/ h, solid forging consumes 9600km altogether3；
Stock utilization (finished parts weight/forge weight): ap1000 main pipeline finished parts weigh 8.2 tons, and forging weighs 68 tons
(weighing 119 tons using steel ingot), forging stock utilization is 11.8%.
It follows that traditional forging technology cycle length, high energy consumption, stock utilization be low, low production efficiency, manufacturing cost
High.
Content of the invention
The present invention, in order to overcome the defect of prior art, devises a seed nucleus main pipeline manufacture method, profit is in this way
The manufacturing cycle can be made to be shortened to 3 months by 6 first quarter moons, be reduced to 25 tons using steel ingot by 119 tons, forge weight is subtracted by 68 tons
To 16 tons, forging stock utilization brings up to 50% by 11.8%, and energy expenditure is then greatly lowered original 1/10, due to
The cost that energy saving and shortening manufacturing cycle bring reduces more considerable.
Concrete technical scheme of the present invention is: a seed nucleus main pipeline manufacture method it is important to: described method bag
Include following steps:
A, cut the rising head mouth of a river, the steel billet obtaining cylinder is standby；
B, thick, perforation: the heating steel billet being obtained step a using heating furnace, to 1000～1200 DEG C, using pressure is
1.6 ten thousand tons of blank machine steel billet is carried out slightly, along steel billet axial through bore, forging ratio is 3, and the aperture of steel billet is 300mm；
C, extruding obtain steel pipe: heating steel billet step b being obtained using heating furnace to 1000～1200 DEG C, using extruding
Power is that the length of steel billet is pulled out by 50,000 tons of vertical extruder, and forging ratio is 2, and aperture is 300mm, obtains steel pipe；
D, extruding arm: using heating furnace, the steel pipe that step c obtains is heated to 1000～1200 DEG C, using arm extruding
Mould and the vertical extruder that extruding force is 50,000 tons squeeze out arm on steel pipe, and the length of steel pipe is compressed, forging ratio
For 2, aperture is 300mm.
E, brake forming: using heating furnace, the steel pipe that step d obtains is heated to 1000～1200 DEG C, using brake forming
Mould and the vertical extruder that extruding force is 50,000 tons make tube bending deform, and the angle that tube bending is formed is 60～70 °；
F, solution heat treatment: the steel pipe that step e is obtained is heated to 1050 DEG C, are incubated 4～5h, are then put in cold water and protect
Hold 30min；
G, polishing: polished using the steel pipe surfaces externally and internally that fabric disc obtains to step f, make the thick of steel pipe surfaces externally and internally
Rugosity is less than 3.2；
H, detection, mark, warehouse-in, obtain required pipeline.
The invention has the beneficial effects as follows: arm extrusion molding dies, brake forming mould structure are simple, easy to use, with
Traditional forging solid casting is compared, and first by thick for steel billet, perforation, then utilizes arm extrusion molding dies, bending and forming die
Tool, blank machine, vertical extruder achieve vertical extruding base, axial supplement, the manufacture method of radial compression shaping, can make
Manufacturing cycle is shortened to 3 months by 6 first quarter moons, is reduced to 25 tons using steel ingot by 119 tons, and forge weight reduces to 16 by 68 tons
Ton, forging stock utilization brings up to 50% by 11.8%, and energy expenditure is then greatly lowered original 1/10, due to saving
The cost that the energy and shortening manufacturing cycle bring reduces more considerable.
Brief description
Fig. 1 is the front view of arm extrusion molding dies in the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the front view of mold in Fig. 1.
Fig. 4 is the front view of lower mould in Fig. 1.
Fig. 5 is the top view of lower mould in Fig. 1.
Fig. 6 is the front view of brake forming mould in the present invention.
Fig. 7 is to take off the front view bending mould after top board.
Fig. 8 is the structural representation of supporting plate in Fig. 6.
Fig. 9 is the left view of top board in Fig. 6.
In accompanying drawing, 1 represents fixed seat, and 2 represent mold, and 3 represent groove, and 4 represent the first limiting plate, and 5 represent the second limit
Position plate, 6 represent tap, and 7 represent first play mould, and 8 represent second play mould, and 9 represent upper hanger, hanger under 10 representatives, and 11
Represent boss, 12 represent groove, 13 represent base, 14 represent supporting plate, 15 represent rotating shaft, 16 represent connecting plate, 17 represent support,
18 represent bracket, and 19 represent top board, and 20 represent indent.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings:
One seed nucleus main pipeline manufacture method it is important to: described method comprises the following steps:
A, cut the rising head mouth of a river, the steel billet obtaining cylinder is standby；
B, thick, perforation: the heating steel billet being obtained step a using heating furnace, to 1000～1200 DEG C, using pressure is
1.6 ten thousand tons of blank machine steel billet is carried out slightly, along steel billet axial through bore, forging ratio is 3, and the aperture of steel billet is 300mm；
C, extruding obtain steel pipe: heating steel billet step b being obtained using heating furnace to 1000～1200 DEG C, using extruding
Power is that the length of steel billet is pulled out by 50,000 tons of vertical extruder, and forging ratio is 2, and aperture is 300mm, obtains steel pipe；
D, extruding arm: using heating furnace, the steel pipe that step c obtains is heated to 1000～1200 DEG C, using arm extruding
Mould and the vertical extruder that extruding force is 50,000 tons squeeze out arm on steel pipe, and the length of steel pipe is compressed, forging ratio
For 2, aperture is 300mm.
E, brake forming: using heating furnace, the steel pipe that step d obtains is heated to 1000～1200 DEG C, using brake forming
Mould and the vertical extruder that extruding force is 50,000 tons make tube bending deform, and the angle that tube bending is formed is 60～70 °；
F, solution heat treatment: the steel pipe that step e is obtained is heated to 1050 DEG C, are incubated 4～5h, are then put in cold water and protect
Hold 30min, toughness and the corrosion resistance of steel pipe can be improved, eliminate stress and softening, to continue processing；
G, polishing: polished using the steel pipe surfaces externally and internally that fabric disc obtains to step f, make the thick of steel pipe surfaces externally and internally
Rugosity is less than 3.2；
H, detection, mark, warehouse-in, obtain required pipeline.
Further comprising the steps of before described step e:
D1, machining: the surface of steel pipe step d being obtained using lathe is processed, make the smoothness of steel tube surface
Reach more than 6.3.
Described step h is that detection steel tube surface has the folder that not damaged, the length of measurement steel pipe and tube bending are formed
Angle, the error of length within ± 2mm and angle error within ± 0.2 ° be qualified products, by qualified products identify into
Storehouse, obtains required pipeline.
Arm extrusion molding dies described in step d include fixed seat 1, mold 2, lower mould, the following table of mold 2
The upper surface of face and lower mould all offers semicircular groove 3, and two grooves 3 fasten and form pipe-line tank, and lower mould both sides are divided
It is not provided with the first limiting plate 4 being fixedly connected with fixed seat 1 and the second limiting plate 5, lower mould offers tap 6, will
Steel pipe is clipped between mold 2 and lower mould, manufactures the arm of main nuclear power pipeline using axial compression forming technique, can be together
Realize the deformation of aximal deformation value in operation, molding time is short, and can be squeezed into the angle between two arms of precise control
During type, due to the clamping action of mould make the continuous modification of metal each several part and also each several part modification uniformly, this is just to grain size
Control highly beneficial, arm has continuous metal streamline, stable performance.
Described lower mould is made up of symmetrically arranged first time mould 7 and second time mould 8, first time mould 7 and
Two times mould 8 is inlaid between the first limiting plate 4 and the second limiting plate 5, can prevent first time mould 7 and in extrusion process
Two times mould 8 double swerves, the formed precision of impact arm, first time mould 7 offers the first tap, second time mould
The second tap is offered, the first tap and the second tap fasten and form tap 6, after extrusion molding, first by upper mould on 8
Tool 2 is sling, and then separates first time mould 7 and second time mould 8, you can take out steel pipe again, convenient and swift, will not be to steel
Pipe causes to wear and tear.
The both sides of described mold 2 are all fixed with hanger 9 at least two, it is possible to use lifting rope safely and fast will be upper
Mould 2 is sling, and saves manpower.
All it is fixed with at least two on the described lateral wall of first time mould 7 and on the lateral wall of second time mould 8
Hanger 10, it is possible to use first time mould 7 and second time mould 8 are rapidly sling by lifting rope, safe and reliable, saves manpower.
The upper surface of described lower mould offers trapezoidal boss 11, and the lower surface of mold 2 offers and boss 11
The groove 12 joined, mold 2 and lower mould coordinate by the clamping locking that cooperatively forms of groove 12 and boss 11, using boss 11
With the cooperation of groove 12, mold 2 and lower mould are carried out spacing, mold 2 double swerve in extrusion process can be prevented, can
To better ensure that the formed precision of arm.
Brake forming mould described in step e includes base 13, symmetrically arranged two supporting plates 14, is arranged on supporting plate 14
The rotating shaft 15 of bottom, the lower surface of supporting plate 14 is fixed with connecting plate 16, and rotating shaft 15 is fixedly connected with connecting plate 16, base 13 two ends
All it is fixed with support 17, supporting plate 14 is formed with support 17 by rotating shaft 15 and is rotatably assorted, and supporting plate 14 upper surface offers and pipeline
The bracket 18 that sidewall shape matches, during brake forming, first passing through two rotating shafts 15 of rotation makes two supporting plate 14 horizontal positioned,
Then the steel pipe of molding to be bent is put in the bracket 18 on supporting plate 14, then utilizes forcing press in two supporting plate 14 joints
Top pressure is applied to steel pipe, make the angle of bend of steel pipe reach required angle.
Described brake forming mould also includes top board 19, and top board 19 is placed on the upper of two supporting plate 14 joints
Side, the lower surface of top board 19 offers the indent 20 with pipe side wall mating shapes, and bracket 18 is fastened with indent 20 and formed
Pipe-line tank, forcing press and top board 18 directly contact, it is to avoid forcing press directly contacts the mill that steel tube surface is caused with steel pipe
Damage, the quality of steel pipe can be better ensured that.
Claims (9)
1. a seed nucleus main pipeline manufacture method it is characterised in that: described method comprises the following steps:
A, cut the rising head mouth of a river, the steel billet obtaining cylinder is standby；
B, thick, perforation: the heating steel billet to 1000～1200 DEG C being obtained step a using heating furnace, is 1.6 ten thousand using pressure
The blank machine of ton steel billet is carried out slightly, along steel billet axial through bore, forging ratio is 3, and the aperture of steel billet is 300mm；
C, extruding obtain steel pipe: the heating steel billet being obtained step b using heating furnace, to 1000～1200 DEG C, using extruding force is
The length of steel billet is pulled out by 50000 tons of vertical extruder, and forging ratio is 2, and aperture is 300mm, obtains steel pipe；
D, extruding arm: using heating furnace, the steel pipe that step c obtains is heated to 1000～1200 DEG C, using arm extrusion molding
Mould and the vertical extruder that extruding force is 50,000 tons squeeze out arm on steel pipe, and the length of steel pipe is compressed, and forging ratio is 2,
Aperture is 300mm；Described arm extrusion molding dies include fixed seat (1), mold (2), lower mould, mold (2)
The upper surface of lower surface and lower mould all offers semicircular groove (3), and two grooves (3) fasten and form pipe-line tank, lower mould
Tool both sides are respectively arranged with the first limiting plate (4) being fixedly connected with fixed seat (1) and the second limiting plate (5), and lower mould is opened
It is provided with tap (6)；
E, brake forming: using heating furnace, the steel pipe that step d obtains is heated to 1000～1200 DEG C, using brake forming mould
The vertical extruder being 50,000 tons with extruding force makes tube bending deform, and the angle that tube bending is formed is 60～70 °；
F, solution heat treatment: the steel pipe that step e is obtained is heated to 1050 DEG C, are incubated 4～5h, are then put in cold water and keep
30min；
G, polishing: polished using the steel pipe surfaces externally and internally that fabric disc obtains to step f, make the roughness of steel pipe surfaces externally and internally
Less than 3.2；
H, detection, mark, warehouse-in, obtain required pipeline.
2. a seed nucleus main pipeline manufacture method according to claim 1 it is characterised in that: also wrap before described step e
Include following steps:
D1, machining: the surface of steel pipe step d being obtained using lathe is processed, make the roughness of steel tube surface reach
6.3 more than.
3. a seed nucleus main pipeline manufacture method according to claim 1 it is characterised in that: described step h be detection steel
Pipe surface has the angle that not damaged, the length of measurement steel pipe and tube bending are formed, and the error of length and is pressed from both sides within ± 2mm
The error at angle is qualified products within ± 0.2 °, and qualified products are identified warehouse-in, obtains required pipeline.
4. a seed nucleus main pipeline manufacture method according to claim 1 it is characterised in that: described lower mould is by symmetrically setting
The first time mould (7) put and second time mould (8) composition, first time mould (7) and second time mould (8) are inlaid in the first limit
Between position plate (4) and the second limiting plate (5), first time mould (7) offers the first tap, second time mould (8) is opened
It is provided with the second tap, the first tap and the second tap fasten and form tap (6).
5. a seed nucleus main pipeline manufacture method according to claim 1 it is characterised in that: the two of described mold (2)
Side is all fixed with hanger at least two (9).
6. a seed nucleus main pipeline manufacture method according to claim 4 it is characterised in that: described first time mould (7)
Lateral wall on and second time mould (8) lateral wall on be all fixed with least two times hangers (10).
7. a seed nucleus main pipeline manufacture method according to claim 1 it is characterised in that: the upper surface of described lower mould
Offer trapezoidal boss (11), the lower surface of mold (2) offers the groove (12) joined with boss (11), mold (2)
Coordinate by the clamping locking that cooperatively forms of groove (12) and boss (11) with lower mould.
8. a seed nucleus main pipeline manufacture method according to claim 1 it is characterised in that: bending to described in step e
Pattern tool includes base (13), symmetrically arranged two supporting plates (14), is arranged on the rotating shaft (15) of supporting plate (14) bottom, supporting plate
(14) lower surface is fixed with connecting plate (16), and rotating shaft (15) is fixedly connected with connecting plate (16), and base (13) two ends are all fixing
Have support (17), supporting plate (14) forms by rotating shaft (15) and support (17) and is rotatably assorted, supporting plate (14) upper surface offer with
The bracket (18) of pipe side wall mating shapes.
9. a seed nucleus main pipeline manufacture method according to claim 8 it is characterised in that: described brake forming mould is also
Including top board (19), top board (19) is placed on the top of two supporting plate (14) joints, and the lower surface of top board (19) is opened
It is provided with the indent (20) with pipe side wall mating shapes, bracket (18) is fastened with indent (20) and forms pipe-line tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410234576.4A CN104014993B (en) | 2014-05-29 | 2014-05-29 | Nuclear main pipeline manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410234576.4A CN104014993B (en) | 2014-05-29 | 2014-05-29 | Nuclear main pipeline manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104014993A CN104014993A (en) | 2014-09-03 |
| CN104014993B true CN104014993B (en) | 2017-01-25 |
Family
ID=51432147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410234576.4A Active CN104014993B (en) | 2014-05-29 | 2014-05-29 | Nuclear main pipeline manufacturing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN104014993B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106799099B (en) * | 2017-03-21 | 2023-11-24 | 惠州新玉环保科技有限公司 | Filter tube production forming equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109520A (en) * | 1980-12-27 | 1982-07-08 | Kobe Steel Ltd | Container cleaning method for indirect extrusion press |
| JPH06246337A (en) * | 1993-02-25 | 1994-09-06 | Showa Alum Corp | Extrusion processing apparatus and extrusion processing method using the apparatus |
| CN101783191B (en) * | 2009-01-21 | 2012-05-16 | 中国核电工程有限公司 | Super pipeline for nuclear power plant as well as manufacturing method thereof |
| CN102756011B (en) * | 2012-07-10 | 2015-02-18 | 清华大学 | Manufacture method of irregular pipe |
| CN102873512B (en) * | 2012-09-29 | 2015-08-26 | 攀钢集团成都钢钒有限公司 | The manufacture method of thick-walled seamless steel pipes in used in nuclear power station heavy caliber |
| CN103272879B (en) * | 2013-05-28 | 2015-05-06 | 宁波庆泰机械有限公司 | Upset-bulge compound internal high pressure forming method and device for long and thin deformed straight pipe |
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- 2014-05-29 CN CN201410234576.4A patent/CN104014993B/en active Active
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| Publication number | Publication date |
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| CN104014993A (en) | 2014-09-03 |
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Address after: 061300 Yanshan Industrial Development Zone, Cangzhou, Hebei Applicant after: HEBEI HONGRUN NUCLEAR EQUIPMENT SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 061300 Yanshan Industrial Development Zone, Cangzhou, Hebei Applicant before: HEBEI HONGRUN HEAVY INDUSTRY GROUP CO.,LTD. |
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Effective date of registration: 20231012 Granted publication date: 20170125 |