CN109834211A - The forging forming method of special-shaped barrel - Google Patents
The forging forming method of special-shaped barrel Download PDFInfo
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- CN109834211A CN109834211A CN201711213167.6A CN201711213167A CN109834211A CN 109834211 A CN109834211 A CN 109834211A CN 201711213167 A CN201711213167 A CN 201711213167A CN 109834211 A CN109834211 A CN 109834211A
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- hole body
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- shaped barrel
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Abstract
The present invention provides a kind of forging forming method of special-shaped barrel, comprising the following steps: the first step, by steel ingot by jumping-up, pull out, cut bottom, cut and emit, form cylinder blank；Second step, by cylinder blank jumping-up again, punching；Cylinder blank with holes is formed step inner hole by internal after step core bar drawing by third step；4th step reuses step plug reaming；5th step is pulled out blank using step plug and sleeve cooperation paragraph by paragraph；6th step completes the final forming of special-shaped barrel.Method of the invention can effectively complete the forming of the larger cylinder forgings of inner hole step difference, avoid passing through straight barrel and shape the huge material of bring and working hour waste.
Description
Technical field
The present invention relates to forging field, in particular to a kind of forging forming methods of special-shaped barrel.
Background technique
With the intensification of China's process of industrialization, the basic equipment in China is also constantly towards enlarged, integrated, high-quality
The directions such as amount stride forward, and along with the continuous upgrading of the relevant industries technology such as nuclear power, chemical industry, equipment part needed for these industries
Also continuous upgrading, also higher and higher to the technical requirements of product, shape also becomes increasingly complex, accordingly to device fabrication
Quotient also proposed bigger difficulty and challenge.
Cylinder forging is seized of huge ratio in industries such as nuclear power, chemical industry, although straight barrel forging accounts for wherein
According to the ratio of the overwhelming majority, but in the development process of relevant industries, heteromorpha cylinder is also more and more.Such as interior nose end
Portion has the step cylinder of big step difference.Since common manufacturing process does not take into account that inner hole step usually in forging forming
Forming, therefore the cylinder of step is had for inner hole, generally by being forged into equal wall thickness straight barrel, eventually by having machined
At final forming.But not only the stock utilization of part is very low in this way, but also greatly expends machining period.In addition, right
In two interior stepped holes have biggish diameter difference cylinder, can not by it is common commonly reaming forging method come complete finally at
Shape.
Summary of the invention
The technical problem to be solved by the present invention is to, a kind of forging forming method of special-shaped barrel is provided, it can by this method
Effectively to complete the forming of the larger cylinder forgings of inner hole step difference, avoids passing through straight barrel and shape the huge material of bring
Material and working hour waste.
To solve this technical problem, the present invention provides a kind of forging forming method of special-shaped barrel, comprising the following steps:
The first step, by steel ingot by jumping-up, pull out, cut bottom, cut and emit, form cylinder blank；
Second step, by cylinder blank jumping-up, and punching inner hole again, diameter of bore is three points of cylinder blank diameter
One of, inner hole is expanded later；
Third step, it is described by cylinder blank with holes by formation step inner hole internal after step core bar drawing
Step inner hole has cylindrical the first hole body and the second hole body, and the diameter of first hole body is greater than the second hole body, and first
There is the hole body step surface of annular between hole body and the second hole body, and form external platform outside the corresponding cylinder of plug step surface
Terrace, the sum of hole body step surface radial width of the outer steps face and step inner hole is greater than final forming in this step
Special-shaped barrel hole body step surface radial width；
4th step, reuses step plug reaming, and when reaming first forges and presses the first hole body reaming, then expands the second hole
Body, later by the reduced width in the outer steps face in third step to 2/3rds of former width；
5th step is pulled out blank using step plug and sleeve cooperation paragraph by paragraph, the radial ringed face of the sleeve
The sum of the width of thickness and the plug step surface is greater than the width of the hole body step surface finally shaped；
6th step, completes the final forming of special-shaped barrel, and the special-shaped barrel finally shaped has cylindrical tube, internal shape
At there is a step inner hole, the step inner hole has cylindrical the first hole body and the second hole body, first hole body it is straight
Diameter is greater than the second hole body, has the hole body step surface of annular between the first hole body and the second hole body.
Preferably, in the 6th step, the second hole body axial length is less than or equal to the one third of entire barrel lenght.
Preferably, in the 6th step, the axial length of the special-shaped barrel is 3000 millimeters, the second hole body axial length
Less than or equal to 1000 millimeters.
Preferably, in the 6th step, the width of the looping pit object table terrace be greater than the first hole body diameter five/
One width.
Preferably, in the 6th step, the width of the looping pit object table terrace is 400 millimeters.
Preferably, in second step, pass through 12000 ton large-scale free forging hydraulic machine entirety jumping-up cylinder blanks to its height
It is 1600 millimeters, and is 1300 millimeters by diameter of bore punching.
Preferably, in third step, the width that outer steps face is formed outside the corresponding cylinder of plug step surface is 150 millis
The sum of hole body step surface radial width of rice, the outer steps face and step inner hole is more than or equal to 500 millimeters.
Preferably, in the 4th step, as low as 100 millimeters of the outer steps reduction of area.
Preferably, in the 5th step, the sum of the width of the thickness in the radial ringed face of the sleeve and the plug step surface
It is less than or equal to 100 millimeters with the different widths of the hole body step surface finally shaped.
Preferably, the sum of width of the thickness in the radial ringed face of the sleeve and the plug step surface is 450 millimeters.
Detailed description of the invention
Fig. 1 is the special-shaped barrel sectional view finally shaped using the forging forming method of special-shaped barrel of the invention.
Fig. 2-Fig. 6 is the product profile in each step of forging forming method of special-shaped barrel of the invention.
Description of symbols
10 special-shaped barrels finally shaped
20 step inner hole, 21 first hole body
22 second hole body, 23 hole body step surface
31 step plug, 32 plug step surface
40 sleeve, 50 outer steps face
Specific embodiment
The present invention, will by multiple open die forging processes by the cooperation of 12000 tons of free forging hydraulic machines and relevant tool
Forging and molding of the large-scale double vacuum steel ingots to the step cylinder finally for interior bore ends with big step difference.The present invention finally shapes
Special-shaped barrel 10 as shown in Figure 1, have cylindrical tube, inside is formed with step inner hole 20, the step inner hole 20
With cylindrical the first hole body 21 and the second hole body 22, the diameter of first hole body 21 is greater than the diameter of the second hole body 22,
Between first hole body 21 and the second hole body 22 have annular hole body step surface 23,22 axial length of the second hole body be less than etc.
In the one third of entire barrel lenght；The width of the looping pit object table terrace 23 is greater than the five of 21 diameter of the first hole body
/ mono- width；In the present embodiment, the axial length of the special-shaped barrel 10 is more than or equal to 3000 millimeters, second hole
22 axial length of body is less than or equal to 1000 millimeters, and the width of the looping pit object table terrace 23 is about 400 millimeters.
The forging forming method of special-shaped barrel of the invention the following steps are included:
Step 1: preparing blank, large-scale double vacuum steel ingots are improved into interior tissue by multiple jumping-up and pulling first,
Make its homogenization and detailed-oriented, to remove congenital existing defect inside steel ingot, cuts off Above The Ingot Bottom and riser, later to guarantee
The quality of stayed blank, to complete the preparation of cylinder blank.The cylinder blank in the present embodiment is as shown in Fig. 2, the circle
Cylindrical workpiece axial height is about 2300mm, and diameter is about 4460mm.
Step 2: preform, cylinder blank prepared by the above-mentioned first step is placed on platform, pass through 12000 tons
Large free forging hydraulic machine entirety jumping-up is to certain altitude, and punching inner hole, the usual diameter of bore be about after jumping-up slab it is straight
The 1/3 of diameter.Fig. 3 shows the blank in the present embodiment after jumping-up, and height is more than or equal to 1600mm, and punching diameter of bore is about
1300mm.Later, the insertion of plug when being expanded inner hole to facilitate subsequent pulling by plug.
Step 3: plug shown in Fig. 4 is put into blank shown in Fig. 3, and pull out, cylinder blank passes through step
Plug 31 is internal after pulling out to form step inner hole 20, and the step inner hole has cylindrical the first hole body 21 and the second hole
The diameter of body 22, first hole body 21 is greater than the second hole body 22, has annular between the first hole body 21 and the second hole body 22
Hole body step surface 23, and outer steps face 50 is formed outside the corresponding cylinder of plug step surface 32, it is described outer in this step
The sum of 23 radial width of hole body step surface of portion's step surface 50 and step inner hole 20 is greater than the special-shaped barrel finally shaped in Fig. 1
The radial width of 10 hole body step surface 23.In the present embodiment, the width in the outer steps face 50 is about 150mm, described outer
The sum of 23 radial width of hole body step surface of portion's step surface 50 and step inner hole 20 >=500mm.
Step 4: 31 reaming of shoulder core before blank shown in Fig. 4 is used, operates in two steps when reaming, first will
21 part reaming of the first hole body of major diameter forging and stamping, second step expands the second hole body 22 of minor diameter again, after the completion of reaming, outside cylinder
Wall retains a part of step, and the reduced width in outer steps face 50 is 2/3rds of former width at this time, is in the present embodiment
100mm, as shown in Figure 5.
Step 5: as shown in fig. 6, blank is pulled out paragraph by paragraph using step plug 31 and the cooperation of sleeve 40, the sleeve
The sum of the width of the thickness in 40 radial ringed face and the plug step surface is greater than the hole body step surface 23 finally shaped
Width, but no more than 100mm is differed, in the present embodiment, the sum of the two width is 450mm.
6th step completes the final forming of special-shaped barrel 10.
The forming that the cylinder of step in such band can be effectively completed by this method, especially for inner hole step difference
The stock utilization of biggish such cylinder, this method part is high, and dramatically saves working hour, to significantly reduce body
Cost is produced, highly significant economic and technical effect is generated.
Claims (10)
1. a kind of forging forming method of special-shaped barrel, which comprises the following steps:
The first step, by steel ingot by jumping-up, pull out, cut bottom, cut and emit, form cylinder blank；
Second step, by cylinder blank jumping-up, and punching inner hole again, diameter of bore be cylinder blank diameter three/
One, inner hole is expanded later；
Cylinder blank with holes is formed step inner hole, the step by internal after step core bar drawing by third step
Shape inner hole has cylindrical the first hole body and the second hole body, and the diameter of first hole body is greater than the second hole body, the first hole body
And second have the hole body step surface of annular between hole body, and forms outer steps outside the corresponding cylinder of plug step surface
Face, the sum of hole body step surface radial width of the outer steps face and step inner hole, which is greater than, in this step finally shapes
The radial width of the hole body step surface of special-shaped barrel；
4th step, reuses step plug reaming, and when reaming first forges and presses the first hole body reaming, then expands the second hole body, it
Afterwards by the reduced width in the outer steps face in third step to 2/3rds of former width；
5th step is pulled out blank using step plug and sleeve cooperation, the thickness in the radial ringed face of the sleeve paragraph by paragraph
It is greater than the width of the hole body step surface finally shaped with the sum of the width of the plug step surface；
6th step completes the final forming of special-shaped barrel, and the special-shaped barrel finally shaped has cylindrical tube, and inside is formed with
Step inner hole, the step inner hole have cylindrical the first hole body and the second hole body, and the diameter of first hole body is big
There is the hole body step surface of annular between the second hole body, the first hole body and the second hole body.
2. the forging forming method of special-shaped barrel as described in claim 1, which is characterized in that in the 6th step, second hole
Body axial length is less than or equal to the one third of entire barrel lenght.
3. the forging forming method of special-shaped barrel as claimed in claim 2, which is characterized in that in the 6th step, the special shape tube
The axial length of body is 3000 millimeters, and the second hole body axial length is less than or equal to 1000 millimeters.
4. the forging forming method of special-shaped barrel as described in claim 1, which is characterized in that in the 6th step, the looping pit
The width of object table terrace is greater than 1/5th width of the first hole body diameter.
5. the forging forming method of special-shaped barrel as claimed in claim 4, which is characterized in that in the 6th step, the looping pit
The width of object table terrace is 400 millimeters.
6. the forging forming method of the special-shaped barrel as described in one of claim 1-5, which is characterized in that in second step, lead to
Crossing 12000 ton large-scale free forging hydraulic machine entirety jumping-up cylinder blanks to its height is 1600 millimeters, and diameter of bore is rushed
It is made as 1300 millimeters.
7. the forging forming method of the special-shaped barrel as described in one of claim 1-5, which is characterized in that in third step,
The width that outer steps face is formed outside the corresponding cylinder of plug step surface is 150 millimeters, the outer steps face and step
The sum of hole body step surface radial width of inner hole is more than or equal to 500 millimeters.
8. the forging forming method of the special-shaped barrel as described in one of claim 1-5, which is characterized in that in the 4th step, institute
State as low as 100 millimeters of outer steps reduction of area.
9. the forging forming method of the special-shaped barrel as described in one of claim 1-5, which is characterized in that in the 5th step, institute
State the width of the sum of the thickness in the radial ringed face of sleeve and the width of the plug step surface with the hole body step surface finally shaped
Degree difference is less than or equal to 100 millimeters.
10. the forging forming method of special-shaped barrel as claimed in claim 9, which is characterized in that in the 5th step, the sleeve
The sum of width of the thickness in radial ringed face and the plug step surface is 450 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711213167.6A CN109834211B (en) | 2017-11-28 | 2017-11-28 | Forging forming method of special-shaped cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711213167.6A CN109834211B (en) | 2017-11-28 | 2017-11-28 | Forging forming method of special-shaped cylinder |
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| CN109834211A true CN109834211A (en) | 2019-06-04 |
| CN109834211B CN109834211B (en) | 2020-10-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110773690A (en) * | 2019-11-04 | 2020-02-11 | 伊莱特能源装备股份有限公司 | Profiling ring rolling forming process for arc-shaped inner platform annular forge piece |
| CN112045124A (en) * | 2020-08-28 | 2020-12-08 | 江阴南工锻造有限公司 | Special core rod for cylinder barrel inner hole concave step and forming method |
| 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 |
| CN112846018A (en) * | 2021-01-05 | 2021-05-28 | 洛阳中重铸锻有限责任公司 | Free forging forming method of hollow forging with stepped inner hole |
| CN114248342A (en) * | 2022-02-07 | 2022-03-29 | 东莞市志橙半导体材料有限公司 | Preparation method of special-shaped semiconductor tube core non-conductive protection tube |
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| JPS53125960A (en) * | 1977-04-11 | 1978-11-02 | Komatsu Mfg Co Ltd | Forming method of material with stepped through hole |
| CN102423790A (en) * | 2011-12-29 | 2012-04-25 | 通裕重工股份有限公司 | Forging die of large inclination tapered hole like forge piece and forging technology |
| CN102527897A (en) * | 2011-12-30 | 2012-07-04 | 中信重工机械股份有限公司 | Forging method for thin-walled step short sleeve type main shaft flange of water turbine |
| CN103381460A (en) * | 2013-08-02 | 2013-11-06 | 武汉重工铸锻有限责任公司 | Method for forging production of oil cylinder with stepped holes by utilizing half moulding bed of riser-free steel ingot |
| CN105414430A (en) * | 2015-12-30 | 2016-03-23 | 二重集团（德阳）重型装备股份有限公司 | Profiling forging method of large cylinder forge piece provided with internal and external steps |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53125960A (en) * | 1977-04-11 | 1978-11-02 | Komatsu Mfg Co Ltd | Forming method of material with stepped through hole |
| CN102423790A (en) * | 2011-12-29 | 2012-04-25 | 通裕重工股份有限公司 | Forging die of large inclination tapered hole like forge piece and forging technology |
| CN102527897A (en) * | 2011-12-30 | 2012-07-04 | 中信重工机械股份有限公司 | Forging method for thin-walled step short sleeve type main shaft flange of water turbine |
| CN103381460A (en) * | 2013-08-02 | 2013-11-06 | 武汉重工铸锻有限责任公司 | Method for forging production of oil cylinder with stepped holes by utilizing half moulding bed of riser-free steel ingot |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110773690A (en) * | 2019-11-04 | 2020-02-11 | 伊莱特能源装备股份有限公司 | Profiling ring rolling forming process for arc-shaped inner platform annular forge piece |
| CN112045124A (en) * | 2020-08-28 | 2020-12-08 | 江阴南工锻造有限公司 | Special core rod for cylinder barrel inner hole concave step and forming method |
| 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 |
| CN112846018A (en) * | 2021-01-05 | 2021-05-28 | 洛阳中重铸锻有限责任公司 | Free forging forming method of hollow forging with stepped inner hole |
| CN114248342A (en) * | 2022-02-07 | 2022-03-29 | 东莞市志橙半导体材料有限公司 | Preparation method of special-shaped semiconductor tube core non-conductive protection tube |
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| CN109834211B (en) | 2020-10-16 |
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