CN106881439B - The manufacturing method of ball transition irregular barrel forging - Google Patents
The manufacturing method of ball transition irregular barrel forging Download PDFInfo
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- CN106881439B CN106881439B CN201710112574.1A CN201710112574A CN106881439B CN 106881439 B CN106881439 B CN 106881439B CN 201710112574 A CN201710112574 A CN 201710112574A CN 106881439 B CN106881439 B CN 106881439B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F2119/06—Power analysis or power optimisation
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Abstract
The present invention relates to the manufacturing method of ball transition irregular barrel forging, ball transition irregular barrel includes the ball section of connection and direct tube section, operating procedure are：Intermediate mold type is first designed, shape is conically shaped；In Finite Element Simulation Software, intermediate mold type is established, intermediate mold type is compressed axially, simulation calculates the blank shape after forging deformation；Deformation result and the shape of ball transition irregular barrel are compared, intermediate base mould shapes amendment is carried out by deformation, until the inside and outside wall size of all positions of ball transition irregular barrel is respectively positioned in the size range of deformation mold type corresponding position；Intermediate base entity is forged with above-mentioned determining shape, with forging machine jumping-up, carries out the ball transition irregular barrel forging needed after cutting finishing.Above-mentioned process for manufacturing forging can completely retain the forging flow lines of forging, greatly improve forging performance, and machining is few, reduce material and processing charges, without manufacture special tooling.
Description
Technical field
The present invention relates to forging manufacture, a kind of particularly manufacturing method of ball transition irregular barrel forging.
Background technology
Ball transition irregular barrel is the forging equipped for container, and shape is as shown in Figure 1, by linking into an integrated entity
Ball section 11 and direct tube section 12 are formed.Its direct tube section 12 is the parallel circle straight-tube shape of inside and outside wall, it will usually be welded with one section of straight tube
It connects；11 outer wall of ball section is spherical arc shape and tangent with 12 outer wall of direct tube section, it will usually be welded with dome head.Here so-called ball arc
Shape be a spherical surface by two parallel plane cuttings, the part cambered surface between two planes.11 inner wall of ball section
For spherical arc shape, and 11 wall thickness of ball section is less than or equal to 12 wall thickness of direct tube section.
Above-mentioned special-shaped forge parts realize that difficulty is very big, there are mainly two types of methods feasible at present according to free forging process：
A kind of method is that the circle straight tube part of big wall thickness is first forged according to special-shaped barrel shape, then by machining, is gone
Except excess metal obtains ball transition irregular barrel shape, this technique cutting output is big, causes waste of material serious, and significantly
Machining cost is improved, simultaneously because having cut off the metal forging streamline of ball section and direct tube section, forging performance is influenced very
Greatly.
Another method is first to forge round straight tube part, is then stretched into using special tooling in the through-hole of round straight tube part, should
Special tooling is column type, and the circumferential surface of column type is provided with protrusion, is adapted to ball section inner wall shape, and forging expansion is carried out using the tooling
Hole obtains the inner wall shape of ball transition irregular barrel, then obtains the outer wall shape of ball transition irregular barrel with machining
Shape.Using this method, the metal streamline of ball section and direct tube section destroys relatively less, but forging performance can still decline, and
And need to manufacture tooling of different shapes according to different special-shaped cylinders, manufacture cost significantly improves.
Invention content
The technical problems to be solved by the invention are：A kind of manufacturing method of ball transition irregular barrel forging is provided, it is several
The ontology forging flow lines of forging can completely be retained, improve forging performance.
The technical solution adopted by the present invention to solve the technical problems is：
The manufacturing method of ball transition irregular barrel forging, the ball transition irregular barrel include connection ball section and
Direct tube section, the ball section outer wall are spherical arc shape and tangent with direct tube section outer wall, and ball section inner wall is also spherical arc shape, and ball section
Wall thickness is less than or equal to the direct tube section wall thickness, and the end of ball section is special-shaped cylinder small end, and the end of direct tube section is that special-shaped cylinder is big
End, the axial height of ball transition irregular barrel is h；
The following steps carried out including sequence：
A, intermediate mold type is designed：The intermediate base mould shapes be conically shaped, big end end face outer diameter, the wall thickness of conically shaped
Respectively with the special-shaped cylinder big end size fit, conically shaped axial height is the sharp angle of h+a, taper drum outer wall busbar and axis
For t；
B, in Finite Element Simulation Software, the intermediate mold type is established, to the upper of intermediate mold type in simulation softward
Lower face is compressed axially, and sets axially depressed amount as a, is simulated in simulation softward and is calculated the blank shape after forging deformation
Shape, obtains deformation mold type, and the deformed part of reduced diameter section of intermediate mold type is simulation ball section, intermediate mold type it is big
The deformed part of diameter segment is simulation direct tube section；
C, the shape of comparison deformation mold type and ball transition irregular barrel, and correct intermediate base mould shapes：Work as simulation
The outer wall dimension of ball section is less than the corresponding position size of the ball section, reduces t, when the inner wall size of simulation ball section is more than
The corresponding position size of the ball section increases t, until the inside and outside wall size of ball section is located at the corresponding of simulation ball section respectively
In the range of position dimension；
When simulation direct tube section is more than with simulating the inner wall size of ball section junction or the inner wall size of simulation direct tube section
The corresponding position size of ball transition irregular barrel reduces a, when simulation direct tube section and the outer wall ruler for simulating ball section junction
Very little or simulation direct tube section outer wall dimension is less than the corresponding position size of ball transition irregular barrel, increases a；Until ball
The inside and outside wall size of all positions of transition irregular barrel is respectively positioned in the size range of deformation mold type corresponding position, is determined
Good intermediate mold molded dimension；Otherwise the step of repeating the adjustment t and adjustment a is modified；
D, intermediate base entity is forged with the intermediate mold molded dimension determined, using a determined as drafts, uses press
Jumping-up is carried out to intermediate base entity, cutting finishing is carried out to the forging redundance after jumping-up, the ball transition needed is different
Type cylinder forgings.
The manufacturing method of ball transition irregular barrel forging, the ball transition irregular barrel include connection ball section and
Direct tube section, the ball section outer wall are spherical arc shape and tangent with direct tube section outer wall, and ball section inner wall is also spherical arc shape, and ball section
Wall thickness is less than or equal to the direct tube section, and the end of ball section is special-shaped cylinder small end, and the end of direct tube section is special-shaped cylinder big end, ball
The axial height of ring transition irregular barrel is h；The direct tube section outer diameter is 4100mm, wall thickness 460mm, h=2100mm, ball
The axial length ratio of section and direct tube section is 0.7：1；
The following steps carried out including sequence：
Intermediate base entity is forged, the intermediate base physical form is conically shaped, and the big end end face outer diameter of conically shaped is
4100mm, wall thickness 465mm, conically shaped axial height are 2300mm, and conically shaped busbar and axis angle are 4 °, with press to press
Lower amount carries out jumping-up for 200mm to intermediate base entity, carries out cutting finishing to the forging redundance after jumping-up, is needed
Ball transition irregular barrel forging.
Further, the material of the intermediate base entity for 20 steel, 35 steel, 16Mn steel, 20Mn steel, 16MND5 steel,
18MND5 steel, SA508 Series Steels, 20MnMo steel, 20MnNiMo steel, 20MnMoNb steel, 2.25Cr-1Mo steel, 14Cr1Mo steel,
35CrMo steel, 15CrMo steel or 2.25Cr-1Mo-0.25V steel.
The beneficial effects of the invention are as follows：The manufacturing method of above-mentioned ball transition irregular barrel forging first designs in software
Go out intermediate mold type, intermediate mold type is taper tubular, is then simulated in Finite Element Simulation Software to intermediate base upper and lower end face
Crimp, and according to height, taper and the drafts of the intermediate mold type of deformation result amendment, until deformation result and needs
Ball transition irregular barrel shape is consistent.Intermediate base entity is then forged with finally determining intermediate mold molded dimension, with laggard
Row jumping-up is processed, the ball transition irregular barrel forging needed after cutting correct on a small quantity.Above-mentioned process for manufacturing forging is several
The ontology forging flow lines of forging can completely be retained, greatly improve forging performance, and machining is few, material can be reduced and added
Expenses of labour is used, and without manufacture special tooling, can significantly reduce manufacture cost.
Description of the drawings
Fig. 1 is the diagrammatic cross-section of ball transition irregular barrel forging；
Fig. 2 is the diagrammatic cross-section of intermediate mold type；
Fig. 3 is the deformation schematic diagram that intermediate mold type axial compression is carried out in Finite Element Simulation Software, is deformation result
One；
Fig. 4 is the deformation schematic diagram that intermediate mold type axial compression is carried out in Finite Element Simulation Software, is deformation result
Two；
Fig. 5 is the deformation schematic diagram that intermediate mold type axial compression is carried out in Finite Element Simulation Software, is deformation result
Three；
Fig. 6 is the deformation schematic diagram that intermediate mold type axial compression is carried out in Finite Element Simulation Software, is deformation result
Four；
Fig. 7 is the deformation schematic diagram that intermediate mold type axial compression is carried out in Finite Element Simulation Software, is deformation result
Five；
Reference numeral is in figure：Ball transition irregular barrel 1, ball section 11, direct tube section 12, special-shaped cylinder small end 13, abnormal shape
Cylinder big end 14, intermediate mold type 2, deformation mold type 3, simulation ball section 31, simulation direct tube section 32, pressing plate 5.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples：
The manufacturing method of ball transition irregular barrel forging, the ball transition irregular barrel 1 include the ball section of connection
11 and direct tube section 12,11 outer wall of ball section is spherical arc shape and tangent with 12 outer wall of direct tube section, and 11 inner wall of ball section is also ball
Arc, and 11 wall thickness of ball section is less than or equal to 12 wall thickness of direct tube section, the end of ball section 11 is special-shaped cylinder small end 13, directly
The end of cylinder section 12 is special-shaped cylinder big end 14, and the axial height of ball transition irregular barrel 1 is h；
The following steps carried out including sequence：
A, intermediate mold type 2 is designed：Intermediate 2 shape of mold type be conically shaped, big end end face outer diameter, the wall of conically shaped
It is thick that respectively with special-shaped 14 size fit of cylinder big end, conically shaped axial height is h+a, taper drum outer wall busbar and axis it is sharp
Angle is t；
B, in Finite Element Simulation Software, the intermediate mold type 2 is established, to intermediate mold type 2 in simulation softward
Upper and lower end face is compressed axially, and sets axially depressed amount as a, is simulated in simulation softward and is calculated the blank after forging deformation
Shape obtains deformation mold type 3, and ball section 31, intermediate mold is are simulated in the deformed part of reduced diameter section of intermediate mold type 2
The deformed part of enlarged diameter section of type 2 is simulation direct tube section 32；
C, the shape of comparison deformation mold type 3 and ball transition irregular barrel 1, and correct intermediate 2 shape of mold type：Work as mould
The outer wall dimension for intending ball section 31 is less than the corresponding position size of the ball section 11, reduces t, when the inner wall of simulation ball section 31
Size is more than the corresponding position size of the ball section 11, increases t, until 11 inside and outside wall size of ball section is located at simulation respectively
In the corresponding position size range of ball section 31；
When simulation direct tube section 32 is with simulating the inner wall size of 31 junction of ball section or simulating the inner wall ruler of direct tube section 32
The very little corresponding position size more than ball transition irregular barrel 1 reduces a, when simulation direct tube section 32 is combined with simulation ball section 31
The outer wall dimension at place or corresponding position size of the outer wall dimension less than ball transition irregular barrel 1 for simulating direct tube section 32, increase
Big a；Until the inside and outside wall size of 1 all positions of ball transition irregular barrel is respectively positioned on 3 corresponding position size model of deformation mold type
In enclosing, intermediate 2 size of mold type determined；Otherwise the step of repeating the adjustment t and adjustment a is modified；
D, intermediate base entity is forged with intermediate 2 size of mold type determined, using a determined as drafts, with pressure
Machine carries out jumping-up to intermediate base entity, carries out cutting finishing to the forging redundance after jumping-up, the ball transition needed
1 forging of irregular barrel.
The ball transition irregular barrel process for manufacturing forging of the present invention is first to design intermediate mold type, in finite element modelling
Simulation axial compression is carried out to intermediate mold type in software, according to its deformation result, intermediate base mould shapes are corrected, until deformation
As a result it is consistent with demand forging shape, then intermediate base entity, the ball needed after subsequent jumping-up, finishing is made with this size
Transition irregular barrel forging.
Specifically, the shape of ball transition irregular barrel 1 is as shown in Figure 1, ball section 11 and direct tube section 12 including connection,
The end of ball section 11 is special-shaped cylinder small end 13, and the end of direct tube section 12 is special-shaped cylinder big end 14, ball transition irregular barrel 1
Axial height is h.
To obtain the forging of above-mentioned shape, need first to design intermediate mold type 2, such as design an intermediate base in software
Model 2, as shown in Fig. 2, its shape is conically shaped, the big end end face outer diameter of conically shaped, wall thickness respectively with the special-shaped cylinder big end
14 size fits, so-called adaptation, that is, be ensured that the big end after conically shaped jumping-up than special-shaped cylinder big end 14 size range more
Forging that is big or identical, then being needed by a small amount of cutting finishing.
During due to carrying out axial jumping-up to conically shaped upper and lower end face, the geomery variation of large end face is little, therefore can
Big end end face outer diameter to be conically shaped is identical with special-shaped cylinder 14 face sizes of big end, and the big end wall thickness of conically shaped with it is described different
14 wall thickness of type tube big end is identical or bigger；Or the big end end face outer diameter of conically shaped is more bigger than special-shaped 14 face size of cylinder big end,
And the big end end face internal diameter of conically shaped is more smaller than special-shaped 14 end face internal diameter of cylinder big end.
As shown in Fig. 2, conically shaped axial height is h+a, and axially depressed amount when distance a is forging, taper drum outer wall
Busbar is t with axis sharp angle.
Then, designed intermediate mold type 2 is imported in Finite Element Simulation Software, so-called finite element modelling is soft here
Part refers to can be used in the FEM Numerical Simulation software that simulative forging squeezes stress deformation, for example, U.S. SFTC
The deform softwares of (Scientific Forming Technologies Corporation) company, ANSYS companies of the U.S.
Ansys softwares etc..
As shown in figure 3, in Finite Element Simulation Software, the pressing plate 5 of simulation carries out axis to the upper and lower end face of intermediate mold type 2
To extruding, axially depressed amount is set in software for a, and input the mechanics parameter of forging material.Intermediate mold type mechanics parameter
It is identical with the material of final intermediate base entity that is, identical with final forging entity material quality.
The material of common intermediate base entity can be 20 steel, 35 steel, 16Mn steel, 20Mn steel, 16MND5 steel, 18MND5
Steel, SA508 Series Steels, 20MnMo steel, 20MnNiMo steel, 20MnMoNb steel, 2.25Cr-1Mo steel, 14Cr1Mo steel, 35CrMo
Steel, 15CrMo steel or 2.25Cr-1Mo-0.25V steel etc..
Finite Element Simulation Software can simulate the blank shape after calculating forging deformation, the reduced diameter section of intermediate mold type 2
That is the epimere of Fig. 2 conically shapeds, deformed part are simulation ball section 31；The enlarged diameter section of intermediate mold type 2, that is, Fig. 2 conically shapeds
Hypomere, deformed part is simulation direct tube section 32, and the shape of intermediate mold type 2 is then corrected according to deformation result.
For example, it is desired to ball transition irregular barrel forging's block dimension be that 12 outer diameter of direct tube section is 4100mm, and wall thickness is
460mm, forging axial height h=2100mm, ball section 11 and the axial length ratio of direct tube section 12 are 0.7, are ball section
11 with the axial length ratio of 12 outer wall of direct tube section be 0.7:1.
The size that intermediate mold type 2 can first be designed is that the big end end face outer diameter of conically shaped is 4100mm, and wall thickness is
465mm, conically shaped axial height are 2600mm, are axially depressed amount a=500mm, and angle t is 6 °.
3 shape of deformation mold type compared after simulation deformation and 1 shape of ball transition irregular barrel needed, such as
Shown in Fig. 3.The deformation mold type 3 that solid line figure between pressing plate 5 obtains after being deformed for conically shaped, dotted line and the figure filled are
1 shape of ball transition irregular barrel needed.
Fig. 3 embodiments as it can be seen that the outer wall dimension of simulation ball section 31 is less than the corresponding position size of the ball section 11, because
This can reduce t.If the size of the intermediate mold type 2 of modification, 3 ° are reduced to by t, then software simulation is calculated such as Fig. 4, mould
The inner wall size for intending ball section 31 is more than the corresponding position size of the ball section 11, therefore can increase t.
If the size of the intermediate mold type 2 of modification, 4 ° are increased to by t, then software simulation is calculated such as Fig. 5, ball section
11 inside and outside wall sizes are located at respectively in the corresponding position size range of simulation ball section 31, then show t=4 ° as convenient angle
Otherwise degree continues to adjust intermediate 2 shape of mold type according to above-mentioned modification method.
As shown in Figure 5, it can be seen that 3 lower semisection of deformation mold type still bends, and lower inner wall has exceeded ball mistake
The size of irregular barrel 1 is crossed, is inner wall size or the simulation for meeting simulation direct tube section 32 with simulating 31 junction of ball section
The inner wall size of direct tube section 32 is more than the situation of the corresponding position size of ball transition irregular barrel 1, it should reduce a, be to subtract
Small axially depressed amount, such as the size of the intermediate mold type 2 of modification, intermediate 2 axial height of mold type is revised as 2200mm, is a
=100mm.
Then software simulation is calculated such as Fig. 6, it is seen that simulation direct tube section 32 and the outer wall ruler for simulating 31 junction of ball section
Very little or simulation direct tube section 32 outer wall dimension is less than the corresponding position size of ball transition irregular barrel 1, it should increase a.
Such as the size of the intermediate mold type 2 of modification, intermediate 2 axial height of mold type is revised as 2300mm, is a=
200mm, then software simulation are calculated such as Fig. 7.In this embodiment, the inside and outside wall ruler of 1 all positions of ball transition irregular barrel
It is very little to be respectively positioned in 3 corresponding position size range of deformation mold type.This shows that the size of intermediate mold type 2 is conically shaped big end end
Face outer diameter 4100mm, wall thickness 465mm, conically shaped axial height are 2300mm, are axially depressed amount a=200mm, outside conically shaped
It is convenient intermediate base geomery that wall busbar and axis angle t, which are 4 °, is otherwise also needed to according to aforementioned adjustment t's and a
Method is adjusted.
Intermediate base entity is then forged according to intermediate 2 size of mold type determined, forging method can be continued to use existing
Some conically shaped forging technology, such as free forging process, roll ring technique etc..Drafts a=200mm to determine again, with pressure
Machine carries out jumping-up to intermediate base entity, and the simulation deformation result of forging and Finite Element Simulation Software after jumping-up is essentially identical, most
Cutting, polishing or other modes may be used afterwards accurately to modify the forging of jumping-up, the ball transition needed is special-shaped
1 forging of cylinder.
Process for manufacturing forging using the present invention, it is few to the machining of intermediate base, it almost can completely retain ball mistake
The ontology streamline of irregular barrel forging is crossed, forging performance is greatly improved, and processing charges and fee of material can be saved, without manufacture
Special tooling can significantly reduce manufacture cost.
It is several specific embodiments that forging manufacture is carried out using this method below：
Example 1：12 outer diameter of direct tube section of ball transition irregular barrel is 3500mm, wall thickness 350mm, h=2200mm, ball
The axial length ratio of section 11 and direct tube section 12 is 0.7:1, it is determined after finite element software is simulated, intermediate base entity size is cone
The big end end face outer diameter 3500mm of shape cylinder, wall thickness 351mm, conically shaped axial height are 2400mm, and conically shaped busbar is pressed from both sides with axis
Angle is 4.2 °, carries out jumping-up to intermediate base entity using drafts as 200mm, cutting is carried out to the forging redundance after jumping-up and is repaiied
1 forging of ball transition irregular barrel that is whole, being needed.
Example 2：12 outer diameter of direct tube section of ball transition irregular barrel is 5000mm, wall thickness 520mm, h=2400mm, ball
The axial length ratio of section 11 and direct tube section 12 is 1.4:1, it is obtained through finite element software simulation, intermediate base entity size is taper
The big end end face outer diameter 5000mm of cylinder, wall thickness 525mm, conically shaped axial height are 2900mm, conically shaped busbar and axis angle
It is 10 °, jumping-up is carried out to intermediate base entity using drafts as 500mm, cutting finishing is carried out to the forging redundance after jumping-up,
1 forging of ball transition irregular barrel needed.
Example 3：12 outer diameter of direct tube section of ball transition irregular barrel is 4600mm, wall thickness 460mm, h=2400mm, ball
The axial length ratio of section 11 and direct tube section 12 is 1:1, it is obtained through finite element software simulation, intermediate base entity size is conically shaped
Big end end face outer diameter 4600mm, wall thickness 465mm, conically shaped axial height is 2900mm, and conically shaped busbar is with axis angle
6 °, jumping-up is carried out to intermediate base entity using drafts as 500mm, cutting finishing is carried out to the forging redundance after jumping-up, is obtained
To 1 forging of ball transition irregular barrel of needs.
Claims (3)
1. the manufacturing method of ball transition irregular barrel forging, the ball section of the ball transition irregular barrel (1) including connection
(11) and direct tube section (12), ball section (11) outer wall are spherical arc shape and, ball section (11) tangent with direct tube section (12) outer wall
Inner wall is also spherical arc shape, and ball section (11) wall thickness is less than or equal to the direct tube section (12) wall thickness, the end of ball section (11)
For special-shaped cylinder small end (13), the end of direct tube section (12) is special-shaped cylinder big end (14), and the axial direction of ball transition irregular barrel (1) is high
It spends for h；
It is characterised in that it includes the following steps that sequence carries out：
A, intermediate mold type (2) is designed：Intermediate mold type (2) shape be conically shaped, big end end face outer diameter, the wall of conically shaped
Thick respectively with described special-shaped cylinder big end (14) size fit, conically shaped axial height is h+a, taper drum outer wall busbar and axis
Sharp angle is t；
B, in Finite Element Simulation Software, the intermediate mold type (2) is established, to intermediate mold type (2) in simulation softward
Upper and lower end face is compressed axially, and sets axially depressed amount as a, is simulated in simulation softward and is calculated the blank after forging deformation
Shape obtains deformation mold type (3), and the deformed part of reduced diameter section of intermediate mold type (2) is simulation ball section (31), in
Between mold type (2) the deformed part of enlarged diameter section for simulation direct tube section (32)；
C, the shape of comparison deformation mold type (3) and ball transition irregular barrel (1), and correct intermediate mold type (2) shape：When
The outer wall dimension for simulating ball section (31) is less than the corresponding position size of the ball section (11), reduces t, when simulation ball section
(31) inner wall size is more than the corresponding position size of the ball section (11), increases t, until the inside and outside wall ruler of ball section (11)
It is very little to be located in the corresponding position size range of simulation ball section (31) respectively；
When simulation direct tube section (32) and the inner wall size of simulation ball section (31) junction or the inner wall of simulation direct tube section (32)
Size is more than the corresponding position size of ball transition irregular barrel (1), reduces a, when simulation direct tube section (32) and simulation ball section
(31) outer wall dimension of junction or the outer wall dimension of simulation direct tube section (32) are less than the phase of ball transition irregular barrel (1)
Position dimension is answered, increases a；Until the inside and outside wall size of ball transition irregular barrel (1) all positions is respectively positioned on deformation mold type
(3) in the size range of corresponding position, intermediate mold type (2) size that is determined；Otherwise the adjustment t and adjustment a are repeated
The step of be modified；
D, intermediate base entity is forged with intermediate mold type (2) size determined, using a determined as drafts, uses press
Jumping-up is carried out to intermediate base entity, cutting finishing is carried out to the forging redundance after jumping-up, the ball transition needed is different
Type tube body (1) forging.
2. the manufacturing method of ball transition irregular barrel forging, the ball section of the ball transition irregular barrel (1) including connection
(11) and direct tube section (12), ball section (11) outer wall are spherical arc shape and, ball section (11) tangent with direct tube section (12) outer wall
Inner wall is also spherical arc shape, and ball section (11) wall thickness is less than or equal to the direct tube section (12), and the end of ball section (11) is different
Type tube small end (13), the end of direct tube section (12) is special-shaped cylinder big end (14), and the axial height of ball transition irregular barrel (1) is
h；Direct tube section (12) outer diameter is 4100mm, wall thickness 460mm, h=2100mm, ball section (11) and the axis of direct tube section (12)
It is 0.7 to lenth ratio：1；
It is characterised in that it includes the following steps that sequence carries out：
Intermediate base entity is forged, the intermediate base physical form is conically shaped, and the big end end face outer diameter of conically shaped is 4100mm,
Wall thickness is 465mm, and conically shaped axial height is 2300mm, and conically shaped busbar is 4 ° with axis angle, with press using drafts as
200mm carries out jumping-up to intermediate base entity, carries out cutting finishing to the forging redundance after jumping-up, the ball mistake needed
Cross irregular barrel (1) forging.
3. the manufacturing method of ball transition irregular barrel forging as claimed in claim 1 or 2, which is characterized in that the centre
The material of base entity for 20 steel, 35 steel, 16Mn steel, 20Mn steel, 16MND5 steel, 18MND5 steel, SA508 Series Steels, 20MnMo steel,
20MnNiMo steel, 20MnMoNb steel, 2.25Cr-1Mo steel, 14Cr1Mo steel, 35CrMo steel, 15CrMo steel or 2.25Cr-1Mo-
0.25V steel.
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| DE102018123316B4 (en) * | 2018-09-21 | 2022-07-07 | Benteler Steel/Tube Gmbh | Tubular element for gas pressure vessels, gas pressure vessels and method for producing a tubular element |
| CN112692223A (en) * | 2020-12-09 | 2021-04-23 | 中国第一重型机械股份公司 | Reducing transition section, forming method, auxiliary tool and hydrogenation reactor |
| CN114628191A (en) * | 2020-12-14 | 2022-06-14 | 平高集团有限公司 | Shell structure and circuit breaker |
| CN112792272A (en) * | 2020-12-22 | 2021-05-14 | 西南铝业（集团）有限责任公司 | 7085 alloy high cylinder ring part forming process |
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| CN104550624A (en) * | 2013-10-22 | 2015-04-29 | 中国第一重型机械股份公司 | Near-net forming forging method of integrated bottom head of nuclear reactor pressure vessel |
| CN105382157A (en) * | 2015-12-02 | 2016-03-09 | 贵州安大航空锻造有限责任公司 | Forming method for large special-shaped structural steel multi-step ring piece |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2654959A1 (en) * | 1989-11-25 | 1991-05-31 | Honda Motor Co Ltd | Method and apparatus for shaping metal articles |
| CN101279345A (en) * | 2008-04-23 | 2008-10-08 | 贵州安大航空锻造有限责任公司 | Rolling forming method of titanium alloy special-shaped ring forging |
| CN102248101A (en) * | 2011-06-15 | 2011-11-23 | 江苏创一精锻有限公司 | Whole forging near net forming process for inner ball cage sliding sleeve |
| CN102294430A (en) * | 2011-08-10 | 2011-12-28 | 贵州航天新力铸锻有限责任公司 | Conformal forging moulding process of hemispherical head |
| CN104550624A (en) * | 2013-10-22 | 2015-04-29 | 中国第一重型机械股份公司 | Near-net forming forging method of integrated bottom head of nuclear reactor pressure vessel |
| CN105382157A (en) * | 2015-12-02 | 2016-03-09 | 贵州安大航空锻造有限责任公司 | Forming method for large special-shaped structural steel multi-step ring piece |
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