CN105033154B - Band adapter and the integrated nozzle belt solid forging method of flange - Google Patents
Band adapter and the integrated nozzle belt solid forging method of flange Download PDFInfo
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- CN105033154B CN105033154B CN201510431094.2A CN201510431094A CN105033154B CN 105033154 B CN105033154 B CN 105033154B CN 201510431094 A CN201510431094 A CN 201510431094A CN 105033154 B CN105033154 B CN 105033154B
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Abstract
The invention discloses the adapter of a kind of band and the integrated nozzle belt solid forging method of flange, the monobloc forging being suitable for nuclear reactor pressure container flange connecting pipe section shapes.On the basis of the characteristic size determining integration nozzle belt, devise blank dimension；Make three beckirons, door font tup, saddle, flange punching pin and flanging lower die simultaneously.In the forging stage, by the hollow blank with middle annulus, it is pressed on adapter annulus position with three beckirons, presses shelves in advance, complete the shaping of adapter boss, then with door font tup and saddle forging forming workblank forging；Blank forged piece roughing finally obtains flange blank, and flange adapter shapes front end ozzle and obtains the overall nozzle belt finished product of integration.This method achieves the one forging of adapter and flange, reduces labor intensity, improves production efficiency, decreases the weld seam quantity of whole pressure vessel.
Description
Technical field
The present invention relates to the manufacture skill of the band adapter integration nozzle belt of a kind of nuclear reactor pressure container
Art, refers in particular to the adapter of a kind of band and the integrated nozzle belt solid forging method of flange.
Background technology
Nuclear reactor pressure container flange connecting pipe section is most important in nuclear island primary device forging and manufactures difficulty
One of forging that degree is maximum, its position be positioned in the middle part of pressure vessel with entrance sleeve, discharge connection,
Peace note adapter is connected.Each adapter manufactures respectively with flange connecting pipe section in the fabrication process, then leads to
Crossing saddle-shaped seam and carry out assembly welding, this manufacturing process not only increases man hour of labour, simultaneously because
Weld seam is more, too increases the difficulty of nuclear reactor pressure container inservice inspection, improves nuclear power plant
Operating cost.
Owing in flange connecting pipe section, the general length of the adapter of assembly welding is longer, wall thickness is thicker, thus conventional
Local heating flange rush shape adapter technique can not meet its requirement, need for this to carry out this
The research and development of aspect.
Summary of the invention
The present invention provides the adapter of a kind of band and the integrated nozzle belt solid forging method of flange, we
Method solves the integral forging and forming problem of adapter and flange connecting pipe section, reduces labor intensity, carries
High production efficiency, it is often more important that decrease the weld seam quantity of whole pressure vessel, ensured and set
Standby safety.
For solving above-mentioned technical problem, the integrated nozzle belt entirety forging of band of the present invention adapter and flange
Make the technical scheme of method, refer to gathering stock, piercing and shaping die one hollow ingot with middle annulus
Material, is pressed into adapter boss in advance by annulus position, centre, blank two ends is processed into flange end with illegal
Lan Duan, by blank entirety reaming；And combine machining and will take over boss and be processed into circular adapter,
Circular adapter in-flanges shapes front end ozzle, the final process shaped.
Specific process comprises the steps:
1) it is first the hollow blank with middle annulus by steel ingot gathering stock punching；Middle annulus
For processing adapter；Middle annulus two ends, one end is used for processing flange end, and the other end is used for processing
Non-flange end；
2) with the two secondary three middle annulus of beckiron upper and lower symmetry pressure, extrude the recessed shelves between annulus, make
Middle annulus is divided into adapter boss；And it is spaced 60 ° between each adjacent adapter boss；
3) again with door font tup and saddle, saddle is through blank center, by door font tup
Door shape neutral gear is stuck on adapter boss, firmly pressure gate font tup and simultaneously rotary billet, reaming
Obtain the blank forged piece that hole large arm is thin；
4) blank forged piece roughing is obtained neutral gear between outer circular adapter and adapter, then butt tube
Carry out flange punching and form shape front end ozzle, after polish, complete the overall nozzle belt finished product of integration.
If hollow blank internal diameter is d8, for a length of H of forged flange end3, external diameter is D14,
Adapter ring strip length is H4, external diameter is D16, for forging a length of H of non-flange end5, external diameter
For D15；H3+H4+H5=H1, H1For finished product nozzle belt whole height；
If blank forged piece dimensional parameters includes: adapter boss is processed into outer diameter D after round tube8, adapter
Girdle height H4；Flange end height H3, internal diameter d4, outer diameter D6；Non-flange end height H5, interior
Footpath d5, outer diameter D7；
Then have, D14 2-d8 2=D6 2-d4 2, D15 2-d8 2=D7 2-d5 2, D16-D15=D8-D7；
Through local, machining obtains flange blank to blank forged piece again, eventually passes flange and rushes shape and complete
The manufacture of the integrated nozzle belt finished parts of required size.
Then having, the characteristic size of three beckirons is: height is H6, a length of L1, width be D9, use
Wedge angle angle in indentation shelves is α °, chamfering is R1, wherein, L1＞ H4, H6≥(D8-D7)/2,
α is slightly less than 60 °.
Then having, the characteristic size of door font tup is: entire length is L2, tup main body middle and lower part
If the recessed shelves of door font, width is L4, the height of recessed shelves above section is H9, tup pressure flange end one
The height of end is H7, bottom intrados radius be R2, the height pressing non-flange end one end is H8, interior
Cambered surface radius is R3；Wherein H7+(D6-d4)/2=H8+(D7-d5)/2, R2≥D6/ 2, R3≥D8/2。
Then having, the characteristic size of saddle is: be used for forging the integration non-flange end of nozzle belt and adapter
The external diameter of annulus section is D10, a length of L5, one end external diameter for forged flange end is D11, long
Degree is L6；D10-D11=d5-d4。
Owing to the integrated nozzle belt solid forging technology of band of the present invention adapter and flange have employed above-mentioned
First technical scheme, i.e. this method determine the integrated nozzle belt characteristic size ginseng of band adapter and flange
Number, devises blank forged piece and flange billet size feature according to its size characteristic, makes three simultaneously
Beckiron, door special font tup, special saddle, the instrument such as flange punching pin and flanging lower die；First
It is the hollow blank with middle annulus by steel ingot gathering stock punching；With two three beckirons in adapter
Annulus position is symmetrical above and below puts, and at interval of 1 recessed shelves of 60 ° of precompressed, completes blank forged piece adapter convex
The shaping of platform；With door special font tup, special saddle forging forming workblank forging；Finally by hair
After base forging roughing, flange adapter shapes front end ozzle, then it is overall to obtain integration after polish
Nozzle belt finished product.This method achieves band adapter and the integrated nozzle belt solid forging of flange, subtracts
Lack total weld seam quantity of nuclear reactor pressure container, also shortened the duration simultaneously, decrease production
Cost.
Accompanying drawing explanation
Accompanying drawing is only used for illustrating the purpose of specific embodiment, and is not considered as limitation of the present invention,
In whole accompanying drawing, identical reference marks represents identical parts.
Fig. 1 is nozzle belt schematic top plan view；
Fig. 2 is the A-A profile of Fig. 1；
Fig. 3 integrated nozzle belt blank forged piece schematic diagram；
Fig. 4 is the A-A profile of Fig. 3；
The schematic diagram of Fig. 5 integration nozzle belt flange blank；
Fig. 6 is the A-A profile of Fig. 5；
Fig. 7-1 is the structure schematic front view of three beckirons；
Fig. 7-2 is the structure schematic side view of three beckirons；
Fig. 8-1 is the structure schematic front view of door font tup；
Fig. 8-2 is the structure schematic side view of door font tup；
Fig. 9 is saddle structural representation；
Figure 10 is flange punch structure schematic diagram；
Figure 11-1 is the structure schematic front view of flanging lower die；
Figure 11-2 is the structure schematic side view of flanging lower die；
Figure 12 is blank structure schematic diagram after pre-upsetting；
Figure 13 is with three beckiron aluminium hydraulic pressed connecting pipes recessed shelves schematic diagram；
Figure 14 is door font tup reaming schematic diagram；
Figure 15 is that flange rushes shape integration nozzle belt adapter shaping front end ozzle schematic diagram；
Figure 16 is band adapter and the integrated nozzle belt forging forming axonometric chart of flange.
In figure, 1-integration nozzle belt body, 2-adapter annulus, the flange end of 3-integration nozzle belt,
4-tri-beckiron, 5-door font tup, 6-saddle, 7-flange punching pin, 8-flanging lower die.
Detailed description of the invention
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings: wherein, accompanying drawing
For explaining the principle of the present invention together with embodiment, but and it is that the unique of the present invention limits.
The present invention, through substantial amounts of numerical simulation, develops band adapter and the integrated nozzle belt of flange
Forging Technology.
For size design aspect:
The first step, determine band adapter and the characteristic size parameter of integrated nozzle belt of flange, as Fig. 1,
Shown in 2, these sizes include adapter internal diameter d1, outer diameter D1, adapter front end ozzle outer diameter D2；Non-
Flange end outer diameter D3, non-flange end internal diameter d3, flange end outer diameter D4, flange end internal diameter d2；Adapter
Section whole height H1, flange end height H2, take over front end ozzle height σ (note: H1、H2Mark
Note direction is different from σ, is mutually perpendicular to).
Second step, according to above-mentioned integration nozzle belt characteristic size, design integration nozzle belt
Blank forged piece and the characteristic size of flange blank.Integration nozzle belt forging is the forging of preformed blank
Part, after the flange blank that roughing obtains, carries out flange punching formation front end ozzle and makes each adapter.
As shown in Figure 3,4, blank forged piece is a cylindrical member, and described cylindrical member is for as flange connecting pipe section
Body, is externally provided with a circle adapter annulus in cylindrical member, is used for processing adapter.Blank forged piece feature chi
Very little parameter, including adapter projection width K5(K5＞ D1), flange end height H3(H3＞ H2), interior
Footpath d4(d4＜ d2), outer diameter D6(D6＞ D4)；Adapter girdle height H4(H4＞ D1), external diameter
D8；Non-flange end height H5, internal diameter d5(d5＜ d3), outer diameter D7(D7＞ D3).Wherein
H3+H4+H5=H1。
Blank forged piece is carried out roughing and obtains flange blank, as shown in Figure 5,6, will take over boss
It is processed into the front end adapter with certain thickness boss, rushes shape, front end, hole boss at adapter in-flanges
Thickness is δ, for flanging forming front end ozzle, wherein δ=2 (D2 2-d1 2)/σ.Blank chi after processing
Very little is d for adapter internal diameter1, external diameter is D1；Non-flange end external diameter is D3, flange end external diameter is D4,
Flange end internal diameter is d2, non-flange end internal diameter be d3, nozzle belt whole height is H1, flange end is high
Degree is H2.Nozzle belt blank forged piece and flange blank need to process under specific purpose tool introduced below
Complete.
For instrument preparation aspect: make three beckirons respectively according to above-mentioned size characteristic, door font is hammered into shape
Head, saddle, flange punching pin and flanging lower die.
Three beckirons such as Fig. 7-1, shown in 7-2, height is H6, a length of L1, width be D9, use
Wedge angle angle in indentation shelves is α °, and chamfering is R1.Wherein, L1＞ H4；H6≥(D8-D7)/2；
α is slightly less than 60 °.
Three beckirons use in pairs, extrude on the middle annulus prefabricated at integration nozzle belt blank
Recessed shelves between adapter, effect after pressure is as it is shown on figure 3, have 6 to connect because of reactor pressure vessel
Pipe, so can use the compacting of two or three beckiron pendulum side symmetrical above and below, as shown in figure 13 during indentation shelves.
Recessed shelves are expanded the most again, after processing as shown in Figure 5 through roughing.
Door font tup and saddle are mainly used in blank entirety reaming (expanding adapter centre bore).Door font
Hammehead structure shape such as Fig. 8-1, shown in 8-2, in terms of front view, there are recessed shelves in main body middle and lower part,
As a door；In terms of left view, bottom part body is with circular arc.A font tup is understood with reference to Figure 14
Structurally and functionally, door font tup is manufactured by integration nozzle belt forging drawing profiling, wherein door word
Shape tup entire length is L2, at crown center, a length of L is set3Type groove, type groove two ends reserve two
Individual boss is used for arranging pin hole, passes through L3Type groove and pin hole, be connected with upper anvil block with pin.
The recessed shelves of door font of main body middle and lower part, width is L4, it is used for being stuck in annulus；Door the recessed shelves of font with
The height of upper part is H9, left and right both ends of the surface respectively arrange the pattern draft of θ ° bottom recessed shelves.Door word
Shape recessed shelves two ends are respectively used to forge nozzle belt flange end and non-flange end.Tup flange end one end
It is highly H7(not including pin hole boss), bottom intrados radius are R2, non-flange end one end
Height be H8(the most not including pin hole boss), intrados radius are R3.Wherein
H7+(D6-d4)/2=H8+(D7-d5)/2, R2≥D6/ 2, R3≥D8/2。
Saddle coordinates integrated nozzle belt entirety reaming with door font tup, and saddle profile is one
Rank axle, as it is shown in figure 9, penetrate in pipe fitting.Wherein it is used for forging the integration non-flange end of nozzle belt
And the external diameter of adapter annulus section is D10, a length of L5, for one end external diameter of forged flange end be
D11, a length of L6.Saddle total length need to be slightly longer than H1, D10-D11=d5-d4。
Its effect of flange punching pin is that the endoporus of punching adapter shapes ozzle, and entire outer diameter is D12, outside drift
Footpath is D13, as shown in Figure 10.Wherein D12=d1Or according to knowhow at d1Stay on size basis
Amount；Use with flanging lower die flange to take over simultaneously, shape adapter front end ozzle.
Having shoulder hole, hole, big footpath in flanging lower die is d6, bottom, hole, big footpath diameter holes is d7, wherein
d6=D1(adapter outer diameter D1), d7≥D2(adapter front end ozzle outer diameter D2).Flanging lower die width is
L7, height is H10, such as Figure 11-1, shown in 11-2.
The concrete technology step of integration nozzle belt processing mainly includes the following:
1) it is the hollow blank with middle annulus by steel ingot gathering stock, punching, such as Figure 12 institute
Showing, blank internal diameter is d8, it is used for forging the integration a length of H of nozzle belt flange end3, external diameter is D14；
The a length of H of annulus4, external diameter is D16；For forging the integration nozzle belt a length of H of non-flange end5,
External diameter is D15.Wherein D14 2-d8 2=D6 2-d4 2, D15 2-d8 2=D7 2-d5 2, D16-D15=D8-D7。
2) with three beckiron aluminium hydraulic pressed connecting pipe annulus positions, integration nozzle belt adapter boss is forged.Such as Figure 13
Shown in, with the adapter annulus on two three beckirons pressed compact symmetrical above and below material, shape recessed shelves between adapter；
Along adapter annulus clockwise or counterclockwise every 60 ° of symmetrical pressure two recessed shelves, complete 6 sections of adapter annulus
Segmentation.Three beckirons are depressed into D14 contact surface in Figure 12.
3) the overall nozzle belt blank forged piece of integration is obtained, such as figure with door font tup and saddle forging
Shown in 14.First prefabricated adapter annulus segmentaion position is inserted in door font tup middle concave shelves,
Synchronize to insert saddle the center of hollow blank；Then with door font tup ring pressed compact material flange end and
Non-flange end, wherein shapes flange end with shorter one end, and higher end shapes non-flange end, with recessed
Shelves shape adapter boss, are flattened by boss, complete the forging of adapter boss.
Saddle forging fire time is adjustable, and during reaming, endoporus can be gradually increased, between such ozzle
Recessed shelves also can grow up therewith.Hole large arm thin pieces is obtained by reaming.
4) it is machined out blank forged piece obtaining the neutral gear between outer circular nozzle belt and adapter.
5) flange punching pin and flanging lower die will be used after integration nozzle belt blank forged piece roughing to all
Adapter ozzle carries out flange and rushes shape, as shown in figure 15.Integration is obtained through polish overall after flange
Nozzle belt finished product, as shown in figure 16.
More than need to be listed the most in the text by calculated size, unlisted a size of according to life
Depending on industry is tested, or according to field working conditions depending on, and significant dimensions needed for non-invention.
Owing to the integrated nozzle belt solid forging technology of band of the present invention adapter and flange have employed above-mentioned
First technical scheme, i.e. this method determine the characteristic size of the integrated nozzle belt of band adapter and flange
Parameter, and design integration nozzle belt blank forged piece accordingly, make triangle according to its design feature
Anvil, door font tup, saddle, flange punching pin and flanging lower die；By steel ingot gathering stock punching it is
Hollow blank with middle annulus；Put adapter annulus position is symmetrical above and below with two three beckirons,
At interval of 1 recessed shelves of 60 ° of precompressed, complete the shaping of adapter boss；With door font tup, saddle
Reaming obtains blank forged piece；Then flange adapter after blank roughing is shaped front end ozzle, then warp
The overall nozzle belt finished product of integration is obtained after polish.This method achieves band adapter and the one of flange
Body nozzle belt integral forging and forming, decreases total weld seam quantity of nuclear reactor pressure container, with
Time also shorten the duration, decrease production cost.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention
Being not limited thereto, any those familiar with the art is at the technology model that the invention discloses
In enclosing, the change that can readily occur in or replacement, all should contain within protection scope of the present invention.
Claims (5)
1. a band adapter and the integrated nozzle belt solid forging method of flange, it is characterized in that, described method refers to that first taking forging method is the hollow blank with middle annulus by steel ingot gathering stock, punching, annulus position, centre is pressed into adapter boss in advance, blank two ends are processed into flange end and non-flange end, by blank entirety saddle forging；Will take over boss then in conjunction with machining and be processed into circular adapter, shape ozzle, the final process obtaining finished product at circle adapter in-flanges；
Specific process comprises the steps:
1) it is first the hollow blank with middle annulus by steel ingot gathering stock punching；Middle annulus is used for processing adapter；Middle annulus two ends, one end is used for processing flange end, and the other end is used for processing non-flange end；
2) with the two secondary three middle annulus of beckiron upper and lower symmetry pressure, extrude the recessed shelves between annulus, make middle annulus be divided into adapter boss；And it is spaced 60 ° between each adjacent adapter boss；
3) again with door font tup and saddle, saddle being through blank center, is stuck on adapter boss by the door shape neutral gear of door font tup, firmly pressure gate font tup and simultaneously rotary billet, reaming obtains the blank forged piece that hole large arm is thin；
4) blank forged piece roughing makes adapter boss become round adapter, and obtain the neutral gear between adapter, then circle adapter is carried out flange punching formation shape front end ozzle, after polish, complete the overall nozzle belt finished product of integration.
Integration nozzle belt solid forging method the most according to claim 1, it is characterised in that during processing, if taken hollow blank dimensional parameters includes, hollow blank internal diameter d8, for length H of forged flange end3, outer diameter D14, adapter ring strip length H4, outer diameter D16, for forging length H of non-flange end5, outer diameter D15；H3+H4+H5=H1, H1For finished product nozzle belt whole height；
If blank forged piece dimensional parameters includes: adapter boss is processed into outer diameter D after round tube8, adapter girdle height H4；Flange end height H3, internal diameter d4, outer diameter D6；Non-flange end height H5, internal diameter d5, outer diameter D7；
Then have, D14 2-d8 2=D6 2-d4 2, D15 2-d8 2=D7 2-d5 2, D16-D15=D8-D7；
Through local, machining obtains flange blank to blank forged piece again, eventually passes flange and rushes the manufacture that shape completes the integrated nozzle belt finished parts of required size.
Integration nozzle belt solid forging method the most according to claim 2, it is characterised in that the characteristic size of described three beckirons is: height is H6, a length of L1, width be D9, be α ° for the wedge angle angle pressing shelves, chamfering be R1, wherein, L1＞ H4, H6≥(D8-D7)/2, α is slightly less than 60 °.
Integration nozzle belt solid forging method the most according to claim 2, it is characterised in that the characteristic size of described door font tup is: entire length is L2, tup main body middle and lower part sets the recessed shelves of a font, and width is L4, the height of recessed shelves above section is H9, the height of tup pressure flange end one end is H7, bottom intrados radius be R2, the height pressing non-flange end one end is H8, intrados radius be R3；
Wherein H7+(D6-d4)/2=H8+(D7-d5)/2, R2≥D6/ 2, R3≥D8/2。
Integration nozzle belt solid forging method the most according to claim 2, it is characterised in that the characteristic size of described saddle is: the external diameter being used for forging the integration non-flange end of nozzle belt and adapter annulus section is D10, a length of L5, one end external diameter for forged flange end is D11, a length of L6；D10-D11=d5-d4。
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| CN201510431094.2A CN105033154B (en) | 2015-07-22 | 2015-07-22 | Band adapter and the integrated nozzle belt solid forging method of flange |
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| CN106051721B (en) * | 2016-06-03 | 2017-03-29 | 上海新闵（东台）重型锻造有限公司 | Nuclear power pressure vessel integration end socket, its end sealing plate blank and method for forging and molding |
| CN108705023B (en) * | 2018-06-20 | 2020-09-01 | 二重（德阳）重型装备有限公司 | Profiling forging process for integrated pipe joint section forge piece |
| CN110090914B (en) * | 2019-04-23 | 2020-04-17 | 上海新闵（东台）重型锻造有限公司 | Integral forging forming method for flange connecting pipe section of reactor pressure vessel cylinder |
| CN113878075B (en) * | 2021-10-18 | 2023-08-25 | 二重（德阳）重型装备有限公司 | Profiling forging process for large variable-section cylinder body integrated with multiple connecting pipes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5233592B2 (en) * | 1972-09-06 | 1977-08-29 | ||
| JPS5236564A (en) * | 1975-09-18 | 1977-03-19 | Furukawa Aluminium | Method of making flanged thick pipe of large diameter |
| US4274276A (en) * | 1978-07-31 | 1981-06-23 | Etablissement Supervis | Method and apparatus for producing a workpiece by extrusion molding |
| CN102303090B (en) * | 2011-08-23 | 2013-08-21 | 江苏大学 | Device and method for compounding and forming central flange pipe joint from pipe blank in single-step and multi-directional way |
| CN102528403A (en) * | 2012-02-15 | 2012-07-04 | 德谦杭重锻造有限公司 | Free forging biconvex forming process for turbine impeller |
| CN104070129B (en) * | 2014-06-06 | 2017-04-12 | 济南中森机械制造有限公司 | Hot extrusion forging die for pipe with flange and deep blind taper hole shaft and forging technology thereof |
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