CN201380258Y - Forming device for straight-edged tapered cylinder forging of nuclear power evaporator - Google Patents
Forming device for straight-edged tapered cylinder forging of nuclear power evaporator Download PDFInfo
- Publication number
- CN201380258Y CN201380258Y CN200920013029U CN200920013029U CN201380258Y CN 201380258 Y CN201380258 Y CN 201380258Y CN 200920013029 U CN200920013029 U CN 200920013029U CN 200920013029 U CN200920013029 U CN 200920013029U CN 201380258 Y CN201380258 Y CN 201380258Y
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- saddle
- anvil
- forging
- straight
- internal shaping
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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
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/04—Shaping in the rough solely by forging or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
Abstract
The utility model belongs to the forging field, and particularly relates to a forming device for a straight-edged tapered cylinder forging of a nuclear power evaporator, which is suitable for process design and production course of forming of a straight-edged tapered cylinder forging of a nuclear power evaporator or a hydrogenation reactor. The device comprises a trestle, a saddle and a twist correction block. The device adopts the structure that the saddle for inserting into a hole in the center of a forging blank is placed on the trestle which is matched with an upper flat anvil arranged on the outer side of the forging blank for use; the twist correction block placed on the base of the trestle is matched with the saddle for use, the twist correction block is located in the position to ensure that the axis of the forging blank and that of the saddle are always in the same plane and maintain a certain angle which is in accordance with the taper of the final part. The device has a simple structure, and solves the problem of difficult forming of the straight-edged tapered cylinder forging; and by adopting the device, the forged straight-edged tapered cylinder forging has uniform admittance and all the sizes meet the requirements of the parts.
Description
Technical field
The utility model belongs to the forging field, specifically is exactly nuclear power evaporator band straight-edge conical cylinder forging forming device, and it is applicable to the technological design and the manufacture process of nuclear power evaporator band straight-edge conical cylinder forging.
Background technology
Conical shell is one of nuclear power evaporator and the most important parts of petrochemical industry hydrogenation reactor, forging often weighs over one hundred ton, diameter is above 5 meters, because its special Service Environment, there are high requirement in tissue and performance to forging, and manufacture difficulty is very big, at present this forging overwhelming majority dependence on import of China, sometimes even spend also to can't buy, seriously restricted the development of China's nuclear power and petroleum chemical industry.
In recent years, because the raising of core voltage force container designed capacity is had higher requirement to the high temperature resistant and high-voltage resistance capability of part.Therefore, in the design of pressure vessel, reduced the quantity of weld seam as far as possible, incorporate manufacturing technology has been proposed, the shape of corresponding conical shell forging is varied to the conical shell structure that straight section is contained at two ends by original simple pyramidal structure, the shaping forging is complex-shaped, not only will satisfy the tapering requirement, and will satisfy the diameter and the length requirement of two ends straight section, giving to forge increases great difficulty.Some enterprises adopt forging are made simple conical shell, obtain the conical shell of two ends band straight flange then by the method for machining.Though so relatively insure, increased the allowance of forging, caused great waste, need bigger steel ingot simultaneously, brought difficulty for the manufacturing of hot-working upstream steel ingot.In addition, this method will be cut off the intrinsic fibre flow of forging in the process of machining, have a strong impact on the structure property of product.
The utility model content
The purpose of this utility model is to provide a kind of nuclear power evaporator band straight-edge conical cylinder forging forming device, can solve problems such as band straight-edge conical cylinder forging forming difficulty, guarantees the quality of conical shell forging.It is even to adopt this device and method of operating to forge the band straight-edge conical cylinder forging allowance that obtains, and the each several part size all can satisfy the part requirement.
The technical solution of the utility model is:
A kind of nuclear power evaporator band straight-edge conical cylinder forging forming device, this device be provided with saddle support, saddle, rectify turn round piece, the anvil of topping bar, internal shaping cover, concrete structure is as follows:
Be used to be inserted into the saddle in the hole at forge piece blank reheating center, be placed on the saddle support, saddle and the last flat anvil of being located at the forge piece blank reheating outside are used;
Be used to be placed on the strong piece of turning round on the pedestal of saddle support, be used with saddle, rectify and turn round the position that axis that piece is arranged on the axis that guarantees forge piece blank reheating and saddle is in same plane all the time and is kept at an angle, this angle is consistent with the tapering of final part;
Anvil and the internal shaping cover side profile of topping bar all has the counter structure of the preceding straight section, tapered section, back straight section and the rear that are arranged in order, and the anvil of topping bar is corresponding with the lateral surface of forge piece blank reheating, and the internal shaping cover is corresponding with the medial surface of forge piece blank reheating.
Described nuclear power evaporator band straight-edge conical cylinder forging forming device, the anvil of topping bar also has the structure of anvil block, connecting hole and pintle, and a side of the anvil of topping bar is provided with anvil block, offers connecting hole on the anvil block, and pintle is positioned at the outer end of back straight section.
Described nuclear power evaporator band straight-edge conical cylinder forging forming device, the internal shaping cover is the axially symmetric structure of hollow, overlaps the structure that an end also has baffle ring at internal shaping, baffle ring is positioned at the outer end of rear.
Described nuclear power evaporator band straight-edge conical cylinder forging forming device, saddle are inserted in the internal shaping cover, constitute the internal shaping anvil; Perhaps, be inserted into the integrative-structure that has identical appearance in the internal shaping cover, constitute the internal shaping anvil with saddle.
The beneficial effects of the utility model are:
1, the utility model adopts numerical simulation technology to determine a kind of nuclear power evaporator band straight-edge conical cylinder forging forming device and forming technology, adopt the utility model to produce the conical shell forging, can control the tapering of forging well, significantly reduce the allowance of conical shell forging, reduce follow-up cold worked difficulty, shorten the production cycle of product.
2, the utility model adopts finite element simulation to verify the validity of building mortion and forming technology, has reduced test number (TN), has reduced research expenditure.
3, the nuclear power evaporator band straight-edge conical cylinder forging forming device of the utility model foundation and forming technology are applicable to vitals such as producing million kilowatt nuclear power conical shell, large-scale hydrogenation reactor conical shell, during production new model conical shell forging, can design building mortion and Forging Technology according to the forging drawing, after the finite element modelling checking, can put into production, can significantly reduce design time, reduce development cost.
Description of drawings
Fig. 1 a-k is a conical shell forging process for fuel schematic flow sheet, wherein:
Fig. 1 a is a steel ingot form schematic diagram.
Fig. 1 b is a steel ingot pulling process schematic diagram.
Fig. 1 c is a blank upsetting process schematic diagram.
Fig. 1 d is a blank punch process schematic diagram.
Fig. 1 e-1 and Fig. 1 e-2 are for using blank in the form process schematic diagram of plug pulling for having certain taper, and Fig. 1 e-1 is a left view, and Fig. 1 e-2 is a front view.
Fig. 1 f presses wall thickness evenly the conical shell configuration process schematic diagram of wall thickness such as formation for blank is placed on the saddle.
Fig. 1 g continues the blank wall thickness ironed for using the saddle forging method.
Fig. 1 h forges into blank in the schematic diagram such as configuration process such as conical shell such as thin-walled such as wall thickness such as grade of specified size for using the saddle forging method.
Fig. 1 i is for using top bar anvil and internal shaping cover forging and pressing blank schematic diagram.
Fig. 1 j forges and presses out the straight section process schematic diagram at conical shell two ends for using top bar anvil and internal shaping cover.
Fig. 1 k is the final band straight-edge conical cylinder forging structural representation that is shaped
Fig. 2 a-b is the anvil structural representation of topping bar.Fig. 2 a is a left view, and Fig. 2 a is a front view.
Fig. 3-1 is for internal shaping cover with the structural representation after saddle is connected, and internal shaping overlaps and is the axially symmetric structure of hollow.
The internal shaping anvil structural representation that Fig. 3-2 is structure as a whole.
Fig. 4 a-d is the finite element modelling checking to designed building mortion of the utility model and forming technology.
Fig. 5 is the comparison of the conical shell forging (grid lines part) after being shaped with processing parts (shadow region).
Among the figure, the 1-steel ingot; The 2-blank; The last flat anvil of 3-; Flat anvil under the 4-; 5-jumping-up cap; 6-jumping-up dish; The 7-drain cap; The 8-punching pin; The 9-plug; The 10-V swage block; The 11-saddle support; The 12-saddle; 13-rectifys and turns round piece; The 14-anvil of topping bar; 15-internal shaping cover; The 16-anvil block; The 17-connecting hole; 18-anvil body; The 19-pintle; Straight section before the 20-; The 21-tapered section; Straight section behind the 22-; The 23-rear; The 24-baffle ring; 25 internal shaping anvils.
The specific embodiment
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
Shown in Fig. 1 a-k, Fig. 2 a-b, Fig. 3-1 and Fig. 3-2, nuclear power evaporator band straight-edge conical cylinder forging forming device, except have the last flat anvil 3 that is used to process forge piece blank reheating, down the conventional structures such as flat anvil 4, jumping-up cap 5, jumping-up dish 6, drain cap 7, punching pin 8, plug 9, V-type anvil 10, also comprise saddle support 11, saddle 12, rectify turn round piece 13, the anvil 14 of topping bar, internal shaping cover 15 etc.
Rectify and to turn round on the pedestal that piece 13 is placed on saddle support 11, be used with saddle 12, rectify and turn round the position that axis that piece 13 is arranged on the axis that guarantees forge piece blank reheating and saddle is in same plane all the time and is kept at an angle, this angle is consistent with the tapering of final part.
The strong piece 13 of turning round that uses in the utility model is rectangular structure, and its function and effect mainly comprise 2 points:
(1) guarantees that the axis of conical shell and the axis of saddle are in same plane all the time.Because big end of conical shell structure and small end girth are inconsistent, therefore the axis of conical shell will deflect when the rotation saddle, cause the spiral reaming, can't guarantee the size of forging.Turn round the deflection that piece can be corrected the conical shell axis by being provided with to rectify, guarantee that the axis of conical shell and the axis of saddle are in the same plane all the time, avoid the spiral reaming.
(2) guarantee that the axis of conical shell and the axis of saddle are kept at an angle.In the reaming process of conical shell, dynamic change will take place in the forging tapering.Turn round piece and can adjust the angle of inclination of conical shell forging in the reaming process by being provided with to rectify, the tapering of guiding forging is close to final goal, guarantees the final tapering requirement of forging.
Shown in Fig. 2 a-b and Fig. 3-1, saddle 12 is inserted in the internal shaping cover 15 and forms the internal shaping anvil, the anvil body 18 of anvil 14 1 sides of topping bar and internal shaping overlap the counter structure that 15 side profiles all have the preceding straight section 20 that is arranged in order, tapered section 21, back straight section 22 and rear 23, and the effect that top bar anvil and internal shaping cover have preceding straight section, tapered section, back straight section and a rear counter structure is blank 2 is forged into the conical shell structure of two ends band straight flange.
Shown in Fig. 3-2, described internal shaping anvil 25 can also be structure as a whole, and its profile is identical with Fig. 3-1.
Shown in Fig. 2 a, the anvil 14 of topping bar also has the structure of anvil block 16, connecting hole 17 and pintle 19, the opposite side of anvil 14 of topping bar is provided with anvil block 16, offer connecting hole 17 on the anvil block 16, pintle 19 is positioned at the outer end of back straight section 22, and the effect of pintle 19 is to prevent that blank 2 is along axially being moved in the reaming process.
Shown in Fig. 2 b, internal shaping cover 15 is the axially symmetric structure of hollow, overlaps the structure that 15 1 ends also have baffle ring 24 at internal shaping, and baffle ring 24 is positioned at the outer end of rear 23.Internal shaping overlaps the effect that an end has a baffle ring structure and is to prevent that blank 2 is along axially being moved in the reaming process.
Nuclear power evaporator band straight-edge conical cylinder forging forming technology, whole forging and pressing process is totally five fire: (1) is heated to assigned temperature with steel ingot 1 shown in accompanying drawing 1a-b, uses flat anvil 3 and following flat anvil 4 with the blank 2 of steel ingot 1 pulling as cylindrical shape then; (2) shown in accompanying drawing 1c-d, blank 2 is placed on the jumping-up dish 6, use jumping-up cap 5 that blank 2 jumping-ups are arrived specified altitude assignment, then blank 2 is placed on the drain cap 7, use hollow punching pin 8 punchings at blank 2 centers; (3) shown in accompanying drawing 1e-1 and 1e-2, plug 9 is inserted in the hole at blank 2 centers, constantly rotate plug 9, flat anvil 3 and following V-shape anvil 10 are the little frustum cone structure of the big end of an end with the blank pulling in the use, and satisfy the dimensional requirement of appointment; (4) shown in accompanying drawing 1f-1h, use saddle 12 to be inserted in the hole at blank 2 centers, be placed on the saddle support 11, rotate saddle 12 and drive the forging rotation, use flat anvil 3 forging and pressing blanks 2 in the gap that forging rotates, after finishing many revolution, make the blank wall thickness even, the conical shell structure of wall thickness such as formation will be rectified then and turn round on the pedestal that piece 13 is placed on saddle support 11, make blank 2 bottoms turn round piece 13 and contact with rectifying, so that the axis of blank 2 is in the identical plane all the time with the axis of saddle 12, and be kept at an angle, this angle is consistent with the tapering of final part, continues to use upward flat anvil 3 pressed compact material 2, and constantly rotate saddle 12, after finishing many revolution, make blank 2 wall thickness continue to reduce, diameter continues to increase, until the size that reaches appointment, the thin-walled conical shell structure of wall thickness such as formation; (5) shown in accompanying drawing 1i-k, (shown in Fig. 3-1, the internal shaping anvil is inserted into the overall structure that forms in the internal shaping cover 15 for adopting with saddle 12 with the internal shaping anvil; Perhaps, shown in Fig. 3-2, internal shaping anvil 25 is structure as a whole) be inserted in the hole at blank 2 centers, the anvil 14 of will topping bar then, blank 2, the aligned in position of internal shaping anvil, turn round on the pedestal that piece 13 is placed on saddle support 11 rectifying, make blank 2 bottoms turn round piece 13 and contact with rectifying, so that the axis of blank 2 is in the identical plane all the time with the axis of saddle 12, and be kept at an angle, this angle is consistent with the tapering of final part, constantly rotate saddle 12 and drive blank 2 rotations, the use anvil 14 of topping bar forges and presses out blank 2 straight section at conical shell two ends, up to blank 2 outside diameters, end diameter, wall thickness, highly, tapering all satisfies process requirement (end that the conical shell diameter of movement is bigger is called big end, and the less end of diameter is called small end).
In above-mentioned flow process, (1)-(3) step belongs to routine operation, and is relatively simple, can control forging ' s block dimension by experience.And for step (4) and (5), forging tapering generation dynamic change in the blank reaming process, forming dimension is difficult to control, validity for checking building mortion and forging flow process, the utility model adopts Finite Element Method that computer simulation has been carried out in the operating process of step (4) and (5), has revised the Mould design size.
In the utility model, finite element modelling is a routine techniques, sees also document [1] Zhuan Zhuo etc. and writes; ABAQUS non linear finite element analysis and example; 2005-3-1; Science Press; ISBN:7030150880.
Embodiment
The forging parts of present embodiment is the pilot scale forging of certain model nuclear power evaporator conical shell, material is SA508c1.3, the heavy 9t of forging, and blank heating temperature is 1250 ℃, whole forging process carries out on 3000 tons of hydraulic presses, during forging and pressing on the hydraulic press anvil depress speed and be about 20mm/s.The finite element modelling of reaming process the results are shown in Figure 4a-d, and Fig. 5 compares for forging (grid lines part) after being shaped and processing parts (outline line part), and the big end internal diameter of the forging after the shaping is 815mm, external diameter is 1000mm, wall thickness is 185mm, highly is 1350mm, and tapering is 11.1 °.As seen from the figure, whole forging allowance is even, and the each several part size all satisfies the part processing requirement.
Embodiment result shows, the utility model has designed nuclear power evaporator band straight-edge conical cylinder forging forming device and forming technology, and adopt finite element simulation that conical shell forging forming device and forging flow process are verified, the Mould design size is revised.Nuclear power evaporator band straight-edge conical cylinder forging forming device that the utility model is set up and forming technology are applicable to vitals such as producing million kilowatt nuclear power conical shell, large-scale hydrogenation reactor conical shell, adopt this utility model production band straight-edge conical cylinder forging, can control the appearance and size of forging well, significantly reduce the allowance of conical shell forging, reduce follow-up cold worked difficulty, shorten the production cycle of product.
Claims (4)
1, a kind of nuclear power evaporator band straight-edge conical cylinder forging forming device is characterized in that, this device is provided with saddle support, saddle, rectify turn round piece, the anvil of topping bar, internal shaping cover, concrete structure is as follows:
Be used to be inserted into the saddle in the hole at forge piece blank reheating center, be placed on the saddle support, saddle and the last flat anvil of being located at the forge piece blank reheating outside are used;
Be used to be placed on the strong piece of turning round on the pedestal of saddle support, be used with saddle, rectify and turn round the position that axis that piece is arranged on the axis that guarantees forge piece blank reheating and saddle is in same plane all the time and is kept at an angle, this angle is consistent with the tapering of final part;
Anvil and the internal shaping cover side profile of topping bar all has the counter structure of the preceding straight section, tapered section, back straight section and the rear that are arranged in order, and the anvil of topping bar is corresponding with the lateral surface of forge piece blank reheating, and the internal shaping cover is corresponding with the medial surface of forge piece blank reheating.
2, according to the described nuclear power evaporator band of claim 1 straight-edge conical cylinder forging forming device, it is characterized in that the anvil of topping bar also has the structure of anvil block, connecting hole and pintle, a side of the anvil of topping bar is provided with anvil block, offer connecting hole on the anvil block, pintle is positioned at the outer end of back straight section.
According to the described nuclear power evaporator band of claim 1 straight-edge conical cylinder forging forming device, it is characterized in that 3, the internal shaping cover is the axially symmetric structure of hollow, overlaps the structure that an end also has baffle ring at internal shaping, baffle ring is positioned at the outer end of rear.
According to the described nuclear power evaporator band of claim 1 straight-edge conical cylinder forging forming device, it is characterized in that 4, saddle is inserted in the internal shaping cover, constitutes the internal shaping anvil; Perhaps, be inserted into the integrative-structure that has identical appearance in the internal shaping cover, constitute the internal shaping anvil with saddle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920013029U CN201380258Y (en) | 2009-04-17 | 2009-04-17 | Forming device for straight-edged tapered cylinder forging of nuclear power evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920013029U CN201380258Y (en) | 2009-04-17 | 2009-04-17 | Forming device for straight-edged tapered cylinder forging of nuclear power evaporator |
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| CN201380258Y true CN201380258Y (en) | 2010-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200920013029U Expired - Lifetime CN201380258Y (en) | 2009-04-17 | 2009-04-17 | Forming device for straight-edged tapered cylinder forging of nuclear power evaporator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564750B (en) * | 2009-04-17 | 2011-02-02 | 二重集团（德阳）重型装备股份有限公司 | Process and device for forming straight-edge conical cylinder forged piece of nuclear power evaporator |
| CN103817278A (en) * | 2012-11-19 | 2014-05-28 | 上海重型机器厂有限公司 | Method for manufacturing pump shell forging of third-generation pressurized water reactor nuclear power coolant pump |
| CN104139144A (en) * | 2014-08-11 | 2014-11-12 | 贵州航天新力铸锻有限责任公司 | Device for forging forge piece with ellipsoidal shell |
| CN106238646A (en) * | 2016-08-29 | 2016-12-21 | 四川三洲川化机核能设备制造有限公司 | Pressure vessel large-scale changeover portion entirety abnormity forging method |
| CN111496154A (en) * | 2020-04-24 | 2020-08-07 | 石钢京诚装备技术有限公司 | Sleeve auxiliary tool and method for producing step hole sleeve type forge piece |
| CN112338114A (en) * | 2020-10-26 | 2021-02-09 | 伊莱特能源装备股份有限公司 | Forming process of inner hole inclined ring piece |
-
2009
- 2009-04-17 CN CN200920013029U patent/CN201380258Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564750B (en) * | 2009-04-17 | 2011-02-02 | 二重集团（德阳）重型装备股份有限公司 | Process and device for forming straight-edge conical cylinder forged piece of nuclear power evaporator |
| CN103817278A (en) * | 2012-11-19 | 2014-05-28 | 上海重型机器厂有限公司 | Method for manufacturing pump shell forging of third-generation pressurized water reactor nuclear power coolant pump |
| CN103817278B (en) * | 2012-11-19 | 2016-04-06 | 上海重型机器厂有限公司 | The manufacture method of third generation compressed water reactor nuclear power cooling medium pump pump case forging |
| CN104139144A (en) * | 2014-08-11 | 2014-11-12 | 贵州航天新力铸锻有限责任公司 | Device for forging forge piece with ellipsoidal shell |
| CN106238646A (en) * | 2016-08-29 | 2016-12-21 | 四川三洲川化机核能设备制造有限公司 | Pressure vessel large-scale changeover portion entirety abnormity forging method |
| CN111496154A (en) * | 2020-04-24 | 2020-08-07 | 石钢京诚装备技术有限公司 | Sleeve auxiliary tool and method for producing step hole sleeve type forge piece |
| CN112338114A (en) * | 2020-10-26 | 2021-02-09 | 伊莱特能源装备股份有限公司 | Forming process of inner hole inclined ring piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100113 Effective date of abandoning: 20090417 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20100113 Effective date of abandoning: 20090417 |