CN106881439A - The manufacture method of ball transition irregular barrel forging - Google Patents
The manufacture method of ball transition irregular barrel forging Download PDFInfo
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- CN106881439A CN106881439A CN201710112574.1A CN201710112574A CN106881439A CN 106881439 A CN106881439 A CN 106881439A CN 201710112574 A CN201710112574 A CN 201710112574A CN 106881439 A CN106881439 A CN 106881439A
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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
- G06—COMPUTING; CALCULATING OR COUNTING
- 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
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
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Abstract
The present invention relates to the manufacture method of ball transition irregular barrel forging, ball transition irregular barrel includes the ball section of connection and direct tube section, and its operating procedure is：Middle mold type is first designed, conically shaped is shaped as；In Finite Element Simulation Software, middle mold type is set up, middle mold type is compressed axially, simulation calculates the blank shape after forging deformation；The shape of contrast deformation result and ball transition irregular barrel, middle 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 relevant position；Middle base entity is forged with above-mentioned determination shape, forging machine jumping-up is used, the ball transition irregular barrel forging needed after cutting finishing is carried out.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
Manufactured the present invention relates to forging, particularly a kind of manufacture method of ball transition irregular barrel forging.
Background technology
Ball transition irregular barrel is the forging for container equipment, and its 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 round straight-tube shape of inside and outside wall, it will usually welded with one section of straight tube
Connect；Ball 11 outer walls of section are spherical arc shape and tangent with the outer wall of direct tube section 12, it will usually welded with dome head.Here so-called ball arc
Shape is a sphere by two parallel plane cuttings, the part cambered surface between two planes.Ball 11 inwalls of section
It is spherical arc shape, and ball 11 wall thickness of section are less than or equal to the wall thickness of the direct tube section 12.
Above-mentioned special-shaped forge parts realize that difficulty is very big according to free forging process, and method feasible at present mainly has two kinds：
A kind of method is the round straight tube part that 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 the metal forging streamline of ball section and direct tube section has been cut off, on forging performance influence 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 side face of column type is provided with projection, is adapted to ball section inner wall shape, and forging expansion is carried out using the frock
Hole, obtains the inner wall shape of ball transition irregular barrel, and the outer wall shape of ball transition irregular barrel is then obtained with machining
Shape.Using this method, ball section is relative with the metal streamline destruction of direct tube section less, but forging performance can still decline, and
And need to manufacture frock of different shapes according to different special-shaped cylinders, manufacturing cost is significantly improved.
The content of the invention
The technical problems to be solved by the invention are：A kind of manufacture method of ball transition irregular barrel forging is provided, it is several
The body forging flow lines of forging can completely be retained, forging performance is improved.
The technical solution adopted for the present invention to solve the technical problems is：
The manufacture method of ball transition irregular barrel forging, the ball transition irregular barrel include connection ball section and
Direct tube section, ball section outer wall is spherical arc shape and tangent with direct tube section outer wall, and ball section inwall 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；
Including the following steps that order is carried out：
Mold type in the middle of A, design：The middle mold type is shaped as conically shaped, the big end end face external diameter of conically shaped, wall thickness
Hold size fit greatly with the special-shaped cylinder respectively, conically shaped axial height is the sharp angle of h+a, taper drum outer wall bus and axis
It is t；
B, in Finite Element Simulation Software, the middle mold type is set up, to the upper of middle mold type in simulation softward
Lower surface is compressed axially, and it is a to set axially depressed amount, and the blank shape after calculating forging deformation is simulated in simulation softward
Shape, obtain deform mold type, middle mold type reduced diameter section deformation after part for simulation ball section, middle mold type it is big
Part after diameter segment deformation is simulation direct tube section；
The shape of C, contrast deformation mold type and ball transition irregular barrel, and correct middle base mould shapes：Work as simulation
The relevant position size of the outer wall dimension less than ball section of ball section, reduces t, when the inner wall size of simulation ball section is more than
The relevant 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 the inner wall size of simulation ball section junction, or the inner wall size of simulation direct tube section
The relevant position size of ball transition irregular barrel, reduces a, when simulation direct tube section and the outer wall chi of simulation ball section junction
It is very little, or simulation direct tube section outer wall dimension less than ball transition irregular barrel relevant position size, increase 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 relevant position, is determined
Good middle mold molded dimension；The step of otherwise repeating the adjustment t and adjustment a is modified；
D, middle base entity is forged with the middle mold molded dimension for determining, be drafts with a for determining, use press
Jumping-up is carried out to middle base entity, cutting finishing is carried out to the forging redundance after jumping-up, the ball transition for being needed is different
Type cylinder forgings.
The manufacture method of ball transition irregular barrel forging, the ball transition irregular barrel include connection ball section and
Direct tube section, ball section outer wall is spherical arc shape and tangent with direct tube section outer wall, and ball section inwall 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 that special-shaped cylinder is held greatly, ball
The axial height of ring transition irregular barrel is h；The direct tube section external diameter is 4100mm, and wall thickness is 460mm, h=2100mm, ball
Section is 0.7 with the axial length ratio of direct tube section：1；
Including the following steps that order is carried out：
Middle base entity is forged, the middle base physical form is conically shaped, and the big end end face external diameter of conically shaped is
4100mm, wall thickness is 465mm, and conically shaped axial height is 2300mm, and conically shaped bus is 4 ° with axis angle, with press pressing
Lower amount carries out jumping-up for 200mm to middle base entity, and cutting finishing is carried out to the forging redundance after jumping-up, is needed
Ball transition irregular barrel forging.
Further, the material of the middle base entity 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.
The beneficial effects of the invention are as follows：The manufacture method of above-mentioned ball transition irregular barrel forging, first designs in software
Go out middle mold type, middle mold type is taper tubular, is then simulated in Finite Element Simulation Software to middle base upper and lower end face
Crimp, and according to the height of mold type, taper and drafts in the middle of deformation result amendment, until deformation result and needs
Ball transition irregular barrel shape is consistent.Middle base entity is then forged with the final middle mold molded dimension for determining, with laggard
Row jumping-up is processed, the ball transition irregular barrel forging needed after a small amount of cutting amendment.Above-mentioned process for manufacturing forging is several
The body forging flow lines of forging can completely be retained, forging performance is greatly improved, and machining is few, can reduce material and add
Expenses of labour is used, and without manufacture special tooling, can significantly reduce manufacturing cost.
Brief description of the drawings
Fig. 1 is the generalized section of ball transition irregular barrel forging；
Fig. 2 is the generalized section of middle mold type；
Fig. 3 is the deformation schematic diagram that middle mold type axial compression is carried out in Finite Element Simulation Software, is deformation result
One；
Fig. 4 is the deformation schematic diagram that middle mold type axial compression is carried out in Finite Element Simulation Software, is deformation result
Two；
Fig. 5 is the deformation schematic diagram that middle mold type axial compression is carried out in Finite Element Simulation Software, is deformation result
Three；
Fig. 6 is the deformation schematic diagram that middle mold type axial compression is carried out in Finite Element Simulation Software, is deformation result
Four；
Fig. 7 is the deformation schematic diagram that middle mold type axial compression is carried out in Finite Element Simulation Software, is deformation result
Five；
Reference is in figure：Ball transition irregular barrel 1, ball section 11, direct tube section 12, special-shaped cylinder small end 13, abnormal shape
The big end 14 of cylinder, middle 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 manufacture method of ball transition irregular barrel forging, the ball transition irregular barrel 1 includes the ball section of connection
11 and direct tube section 12,11 outer walls of the ball section are spherical arc shape and tangent with the outer wall of direct tube section 12, and 11 inwalls of ball section are also ball
Arc, and ball 11 wall thickness of section are less than or equal to the wall thickness of the direct tube section 12, the end of ball section 11 is special-shaped cylinder small end 13, directly
The end of cylinder section 12 is the special-shaped big end 14 of cylinder, and the axial height of ball transition irregular barrel 1 is h；
Including the following steps that order is carried out：
Mold type 2 in the middle of A, design：The middle mold type 2 is shaped as conically shaped, the big end end face external diameter of conically shaped, wall
It is thick respectively with the special-shaped big size fit of end 14 of cylinder, conically shaped axial height is h+a, and taper drum outer wall bus is sharp with axis
Angle is t；
B, in Finite Element Simulation Software, the middle mold type 2 is set up, to middle mold type 2 in simulation softward
Upper and lower end face is compressed axially, and it is a to set axially depressed amount, and the blank after calculating forging deformation is simulated in simulation softward
Shape, obtains deformation mold type 3, and the part after the reduced diameter section deformation of middle mold type 2 is simulation ball section 31, middle mold
Part after the enlarged diameter section deformation of type 2 is simulation direct tube section 32；
The shape of C, contrast deformation mold type 3 and ball transition irregular barrel 1, and correct the middle shape of mold type 2：Work as mould
Intend the relevant position size of the outer wall dimension less than ball section 11 of ball section 31, reduce t, when the inwall of simulation ball section 31
Size increases t more than the relevant position size of ball section 11, until ball 11 inside and outside wall sizes of section are located at simulation respectively
In the relevant position size range of ball section 31；
When simulation direct tube section 32 and the inner wall size of 31 junctions of simulation ball section, or the inwall chi for simulating direct tube section 32
The very little relevant 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 the relevant position size of the outer wall dimension less than ball transition irregular barrel 1 of direct tube section 32 is simulated, increase
Big a；Until the inside and outside wall size of all positions of ball transition irregular barrel 1 is respectively positioned on the relevant position size model of deformation mold type 3
In enclosing, the middle size of mold type 2 for being determined；The step of otherwise repeating the adjustment t and adjustment a is modified；
D, middle base entity is forged with the middle size of mold type 2 for determining, be drafts with a for determining, with pressure
Machine carries out jumping-up to middle base entity, and cutting finishing is carried out to the forging redundance after jumping-up, the ball transition for being needed
The forging of irregular barrel 1.
Ball transition irregular barrel process for manufacturing forging of the invention, is mold type in the middle of first designing, in finite element modelling
Middle mold type is simulated in software is compressed axially, according to its deformation result, base mould shapes in the middle of amendment, until deformation
Result is consistent with demand forging shape, then make middle base entity, the ball needed after subsequent jumping-up, finishing with this size
Transition irregular barrel forging.
Specifically, the shape of ball transition irregular barrel 1 is as shown in figure 1, the ball section 11 and direct tube section 12 including connecting,
The end of ball section 11 is special-shaped cylinder small end 13, and the end of direct tube section 12 is the special-shaped big end 14 of cylinder, ball transition irregular barrel 1
Axial height is h.
To obtain the forging of above-mentioned shape, it is necessary to first design middle mold type 2, for example, base in the middle of is designed in software
Model 2, as shown in Fig. 2 it is shaped as conically shaped, big end end face external diameter, the wall thickness of conically shaped are held greatly with the special-shaped cylinder respectively
14 size fits, so-called adaptation is ensured that the size range at the end 14 bigger than special-shaped cylinder of the big end after conically shaped jumping-up 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 change of its large end face is little, therefore can
It is identical with the big face size of end 14 of special-shaped cylinder with the big end end face external diameter for being conically shaped, and the big end wall of conically shaped is thick different with described
The big wall thickness of end 14 of type tube is identical or bigger；Or the big end end face external diameter of conically shaped is bigger with the big face size of end 14 of special-shaped cylinder,
And the big end end face internal diameter end face internal diameter of end 14 bigger than special-shaped cylinder of conically shaped is smaller.
As shown in Fig. 2 conically shaped axial height is h+a, axially depressed amount when apart from a being forging, taper drum outer wall
Bus is t with axis sharp angle.
Then, the middle mold type 2 that will be designed is imported in Finite Element Simulation Software, and so-called finite element modelling is soft here
Part refers to that can be used in the FEM Numerical Simulation software that simulative forging extrudes 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 upper and lower end face of mold type 2 carries out axle in the middle of the pressing plate 5 pairs of simulation
To extruding, axially depressed amount is set in software for a, and be input into the mechanics parameter of forging material.Middle mold type mechanics parameter
It is identical with the material of final middle base entity that is, identical with final forging entity material quality.
The material of common middle 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 middle mold type 2
That is the epimere of Fig. 2 conically shapeds, the part after deformation is simulation ball section 31；The enlarged diameter section of middle mold type 2 is Fig. 2 conically shapeds
Hypomere, part after deformation is simulation direct tube section 32, and the shape of middle 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 the external diameter of direct tube section 12 is 4100mm, and wall thickness is
460mm, forging axial height h=2100mm, ball section 11 are 0.7 with the axial length ratio of direct tube section 12, are ball section
11 is 0.7 with the axial length ratio of the outer wall of direct tube section 12:1.
The size of middle mold type 2 can first be designed for the big end end face external diameter of conically shaped is 4100mm, wall thickness is
465mm, conically shaped axial height is 2600mm, is axially depressed amount a=500mm, and angle t is 6 °.
After simulation deformation, the shape of deformation mold type 3 that contrast is obtained and the shape of ball transition irregular barrel 1 for needing, such as
Shown in Fig. 3.The deformation mold type 3 that solid line figure between pressing plate 5 is obtained after deforming for conically shaped, dotted line and the figure filled are
The shape of ball transition irregular barrel 1 of needs.
Fig. 3 embodiments are visible, the relevant position size of the outer wall dimension less than ball section 11 of simulation ball section 31, because
This can reduce t.If the size of mold type 2,3 ° are reduced to by t in the middle of modification, then software simulation is calculated such as Fig. 4, mould
Intend the relevant position size of the inner wall size more than ball section 11 of ball section 31, therefore t can be increased.
If the size of mold type 2,4 ° are increased to by t in the middle of modification, then software simulation is calculated such as Fig. 5, ball section
11 inside and outside wall sizes are located in the relevant position size range of simulation ball section 31 respectively, then show t=4 ° for convenient angle
Degree, otherwise continues to adjust the middle shape of mold type 2 according to above-mentioned modification method.
As shown in Figure 5, it can be seen that the lower semisection times of deformation mold type 3 so bends, and lower inner wall is beyond ball mistake
The size of irregular barrel 1 is crossed, is the inner wall size for meeting simulation direct tube section 32 and 31 junctions of simulation ball section, or simulate
Situation of the inner wall size of direct tube section 32 more than the relevant position size of ball transition irregular barrel 1, it should reduce a, be to subtract
Small axially depressed amount, for example, change the size of middle mold type 2, and the middle axial height of mold type 2 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 chi for simulating 31 junctions of ball section
It is very little, or relevant position size of the outer wall dimension less than ball transition irregular barrel 1 for simulating direct tube section 32, it should increase a.
Such as in the middle of the changing size of mold type 2, the middle axial height of mold type 2 is revised as 2300mm, is a=
200mm, then software simulation is calculated such as Fig. 7.In this embodiment, the inside and outside wall chi of all positions of ball transition irregular barrel 1
It is very little to be respectively positioned in the relevant position size range of deformation mold type 3.This shows that the size of middle mold type 2 is the big end end of conically shaped
Face external diameter 4100mm, wall thickness 465mm, conically shaped axial height are 2300mm, are axially depressed amount a=200mm, outside conically shaped
It is convenient middle base geomery that wall bus and axis angle t are 4 °, is otherwise also needed to according to foregoing adjustment t's and a
Method is adjusted.
Middle base entity is then forged according to the middle size of mold type 2 for determining, its forging method can be continued to use existing
Some conically shaped FMTs, such as free forging process, roll ring technique etc..Drafts a=200mm to determine again, with pressure
Machine carries out jumping-up to middle base entity, and the forging after jumping-up is essentially identical with the simulation deformation result of Finite Element Simulation Software, most
The forging of jumping-up can accurately be repaired using cutting, polishing or other modes afterwards, the ball transition for being needed is special-shaped
The forging of cylinder 1.
Using process for manufacturing forging of the invention, the machining to middle base is few, almost can completely retain ball mistake
The body 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 manufacturing cost.
The following is several specific embodiments that forging manufacture is carried out using this method：
Example 1：The external diameter of direct tube section 12 of ball transition irregular barrel is 3500mm, and wall thickness is 350mm, h=2200mm, ball
Section 11 is 0.7 with the axial length ratio of direct tube section 12:1, determine after being simulated through finite element software, middle base entity size is cone
The big end end face external diameter 3500mm of shape cylinder, wall thickness 351mm, conically shaped axial height are 2400mm, and conically shaped bus is pressed from both sides with axis
Angle is 4.2 °, and jumping-up is carried out to middle base entity by 200mm of drafts, and carrying out cutting to the forging redundance after jumping-up repaiies
The forging of ball transition irregular barrel 1 that is whole, being needed.
Example 2：The external diameter of direct tube section 12 of ball transition irregular barrel is 5000mm, and wall thickness is 520mm, h=2400mm, ball
Section 11 is 1.4 with the axial length ratio of direct tube section 12:1, drawn through finite element software simulation, middle base entity size is taper
The big end end face external diameter 5000mm of cylinder, wall thickness 525mm, conically shaped axial height are 2900mm, conically shaped bus and axis angle
It is 10 °, jumping-up is carried out to middle base entity by 500mm of drafts, cutting finishing is carried out to the forging redundance after jumping-up,
The forging of ball transition irregular barrel 1 for being needed.
Example 3：The external diameter of direct tube section 12 of ball transition irregular barrel is 4600mm, and wall thickness is 460mm, h=2400mm, ball
Section 11 is 1 with the axial length ratio of direct tube section 12:1, drawn through finite element software simulation, middle base entity size is conically shaped
Big end end face external diameter 4600mm, wall thickness 465mm, conically shaped axial height is 2900mm, and conically shaped bus is with axis angle
6 °, jumping-up is carried out to middle base entity by 500mm of drafts, cutting finishing is carried out to the forging redundance after jumping-up, obtained
To the forging of ball transition irregular barrel 1 for needing.
Claims (3)
1. the manufacture method of ball transition irregular barrel forging, the ball transition irregular barrel (1) includes the ball section that connects
(11) and direct tube section (12), described ball section (11) outer wall is spherical arc shape and, ball section (11) tangent with direct tube section (12) outer wall
Inwall 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)
It is special-shaped cylinder small end (13), the end of direct tube section (12) is that special-shaped cylinder is held greatly (14), the axially height of ball transition irregular barrel (1)
It is h to spend；
It is characterised in that it includes the following steps that order is carried out：
Mold type (2) in the middle of A, design：The middle mold type (2) is shaped as conically shaped, the big end end face external diameter of conically shaped, wall
Thickness holds greatly (14) size fit with the special-shaped cylinder respectively, and conically shaped axial height is h+a, taper drum outer wall bus and axis
Sharp angle is t；
B, in Finite Element Simulation Software, the middle mold type (2) is set up, to middle mold type (2) in simulation softward
Upper and lower end face is compressed axially, and it is a to set axially depressed amount, and the blank after calculating forging deformation is simulated in simulation softward
Shape, obtains deformation mold type (3), and the part after the reduced diameter section deformation of middle mold type (2) is simulation ball section (31), in
Between mold type (2) enlarged diameter section deformation after part for simulation direct tube section (32)；
The shape of C, contrast deformation mold type (3) and ball transition irregular barrel (1), and correct middle mold type (2) shape：When
The outer wall dimension of simulation ball section (31) reduces t less than the relevant position size of ball section (11), when simulation ball section
(31) inner wall size increases t more than the relevant position size of ball section (11), until ball section (11) inside and outside wall chi
It is very little to be located in the relevant 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 inwall for simulating direct tube section (32)
Size reduces a more than the relevant position size of ball transition irregular barrel (1), when simulation direct tube section (32) and simulation ball section
(31) outer wall dimension of junction, or simulate the phase of the outer wall dimension less than ball transition irregular barrel (1) of direct tube section (32)
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 relevant position, middle mold type (2) size for being determined；Otherwise repeat the adjustment t and adjustment a
The step of be modified；
D, middle base entity is forged with middle mold type (2) size for determining, be drafts with a for determining, use press
Jumping-up is carried out to middle base entity, cutting finishing is carried out to the forging redundance after jumping-up, the ball transition for being needed is different
Type tube body (1) forging.
2. the manufacture method of ball transition irregular barrel forging, the ball transition irregular barrel (1) includes the ball section that connects
(11) and direct tube section (12), described ball section (11) outer wall is spherical arc shape and, ball section (11) tangent with direct tube section (12) outer wall
Inwall 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 that special-shaped cylinder is held greatly (14), and the axial height of ball transition irregular barrel (1) is
h；Direct tube section (12) external diameter is 4100mm, and wall thickness is 460mm, h=2100mm, the axle of ball section (11) and direct tube section (12)
It is 0.7 to lenth ratio：1；
It is characterised in that it includes the following steps that order is carried out：
Middle base entity is forged, the middle base physical form is conically shaped, and the big end end face external diameter of conically shaped is 4100mm,
Wall thickness is 465mm, and conically shaped axial height is 2300mm, and conically shaped bus is 4 ° with axis angle, is with drafts with press
200mm carries out jumping-up to middle base entity, and cutting finishing is carried out to the forging redundance after jumping-up, the ball mistake for being needed
Cross irregular barrel (1) forging.
3. the manufacture method of ball transition irregular barrel forging as claimed in claim 1 or 2, it is characterised in that the centre
The material of base entity 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.
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| US5115663A (en) * | 1989-11-25 | 1992-05-26 | Honda Giken Kogyo Kabushiki Kaisha | Method for forming a crankshaft |
| CN100584482C (en) * | 2008-04-23 | 2010-01-27 | 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 |
| CN104550624B (en) * | 2013-10-22 | 2016-04-27 | 中国第一重型机械股份公司 | The near-net-shape forging method of nuclear reactor pressure container integration bottom (head) |
| 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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| CN110939794A (en) * | 2018-09-21 | 2020-03-31 | 本特勒尔钢管有限公司 | Pipe element for a gas pressure vessel, gas pressure vessel and method for manufacturing a pipe element |
| CN110939794B (en) * | 2018-09-21 | 2022-10-18 | 本特勒尔钢管有限公司 | Pipe element for a gas pressure vessel, gas pressure vessel and method for manufacturing a pipe element |
| US11873944B2 (en) | 2018-09-21 | 2024-01-16 | Benteler Steel/Tube Gmbh | Tubular element for gas pressure vessel, gas pressure vessel and method of manufacturing 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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