CN108465762A - A kind of forging method of efficient whole uniform compaction deformation - Google Patents
A kind of forging method of efficient whole uniform compaction deformation Download PDFInfo
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- CN108465762A CN108465762A CN201810649516.7A CN201810649516A CN108465762A CN 108465762 A CN108465762 A CN 108465762A CN 201810649516 A CN201810649516 A CN 201810649516A CN 108465762 A CN108465762 A CN 108465762A
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- forging
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- deformation
- anvil
- main transformer
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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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- 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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The present invention relates to the forging methods of a kind of compacting deformation making heavy forging product and the efficient whole uniform compaction deformation of even tissue refinement, upsetting is carried out to forging using dedicated wide plate up and down, complete forging main transformer shape, finishing molding is then carried out on upper and lower anvil, utilize special wide plate solid forging, not only substantially increase forging permeability, it also overcomes when anvil forging up and down between each tup, the non-uniform problem of the forging deformations such as tup junction, ensure that forging is compacted and obtains uniform fine grained texture thoroughly inside forging, ESR ingot after jumping-up is subjected to main transformer shape on upper and lower wide plate, due to being that overall time is deformed into design size for every time in wide plate forging process, drafts is controlled 25%~40%；Overall time forges in place still between upper and lower tablet after 90 ° of overturning；Until after being deformed to and being sized, 700mm wide anvil forging moldings up and down are used instead for ease of playing angle, tup forging deformation problem of non-uniform when avoiding main transformer shape, improve forging permeability, reduce and changes anvil number, forging time nearly 1/2 is saved, forging production efficiency is improved, reduces production cost, product quality stability is high.
Description
Technical field
The invention belongs to technical field of forging, it is related to a kind of compacting deformation making heavy forging product and even tissue refinement
Efficient whole uniform compaction deformation forging method.
Background technology
The common forging method of press is to be carried out forging deformation using upper flat anvil 2, lower flat anvil 3 to blank 1, but be somebody's turn to do at present
The inside forging permeability and structural homogenity of the big specification forging of method production are poor, and production efficiency is relatively low.Traditional hydraulic press
Forging mode is：Using upper lower ram progress forging deformation, due to deforming and joining, overturning between each tup in forging process
Inhomogeneities when forging leads to the uneven of follow-up grain size and tissue, is limited simultaneously because anvil is wide, the forging inside forging is saturating
Property is poor, and such phenomenon is especially prominent in big specification forging.Traditional hydraulic press forging deformation mode is shown in Fig. 1.To ensure to forge
The compacting deformation of part inner homogeneous, improves ultrasonic flaw detection qualification rate, and obtain uniformly tiny metallographic structure, needs to overcome up and down
The non-uniform problem of forging deformation between each tup when flat anvil forging.
Invention content
A kind of upper and lower wide plate of use is provided to forging it is an object of the invention to overcome the deficiencies in the prior art
Upsetting pull forging is carried out, finishing molding is carried out on upper and lower anvil again after completing main transformer shape, not only ensures forging permeability, overcome up and down
The forging method of anvil efficient whole uniform compaction deformation of forging deformation problem of non-uniform between each tup when forging, it is ensured that forging
Inner homogeneous compacting deformation, improves ultrasonic flaw detection qualification rate, and obtain uniformly tiny metallographic structure, makes forging inside forging
It is compacted and is obtained uniform fine grained texture thoroughly, while also greatly improving forging production efficiency, reducing comprehensive production cost, is produced
Quality stability is high.
The object of the present invention is achieved like this：
A kind of forging method of efficient whole uniform compaction deformation, whole upsetting pull forging is carried out using upper and lower wide tablet to forging
It makes, anvil finishing molding up and down is recycled after completing main transformer shape.
In upper and lower wide flat board overall forging, wide tablet plate is wider than width or diameter after blank jumping-up；Using upper and lower
Wide tablet carries out jumping-up, main transformer shape, when wide slab forging every time be it is disposable it is whole be deformed to position, and non-traditional forging side
Multiple lower hammer in method could deform in place；It is to be deformed to after certain size, then by upper lower ram finishing to forging size.
When using upper and lower wide slab forging, forging directly carries out pulling forging between upper and lower wide tablet after jumping-up；Wide tablet
When forging, every time is that overall time is deformed into design size, after 90 ° of overturning, is still disposably forged between upper and lower wide tablet
It makes in place, every time deflection is 25%~40%, until completing main transformer shape forging；It avoids between tup, tup junction becomes
Shape problem of non-uniform considerably increases the forging permeability inside forging, and forging deformation is not between each tup when overcoming anvil forging up and down
Uniform problem, it is ensured that forging is compacted and obtains uniform fine grained texture thoroughly inside forging.
Between upper and lower wide tablet after main transformer shape, for ease of playing angle, it is directly changed to 700mm wide anvil forging moldings up and down.
Beneficial effects of the present invention are as follows：
The present invention is that the forging method of upsetting pull is carried out using wide tablet up and down, is avoided using upper lower ram forging deformation
When, between each tup drafts it is inconsistent and handing-over, overturning etc. due to caused by inhomogeneities, lead to follow-up grain size and group
That knits is uneven, and such phenomenon is especially prominent in big specification forging；Using wide slab forging, not only forging center portion forging permeability is big
It is big to improve, and since this method master is deformed into solid forging, forging is efficient, while being also reduced in forging process and changing anvil
Number is a kind of efficient whole uniform compaction deformation forging method.
Therefore the forging method of the efficient whole uniform compaction deformation of the present invention, avoids repeatedly changing in forging process
Anvil has been saved the production time, and production efficiency is high, reduces production cost, it is most important that this kind of forging method forges permeability and pressure
Actual effect fruit is good, while solid forging ensures the uniformity of interior tissue, and then obtains uniform fine grained texture, and product quality is big
It is big to improve, extend service life, production technology economy, science.The forging method economy, efficiently, and product quality stability
It is high.
Description of the drawings
Fig. 1 is traditional hydraulic press main transformer shape forging mode.
Fig. 2 is the hydraulic press main transformer shape forging mode of the present invention.
Fig. 3 is the forging drawing of the present invention.
Fig. 4 is the structural schematic diagram before the jumping-up of traditional forging deformation procedure chart.
Fig. 5 be traditional forging deformation procedure chart jumping-up after structural schematic diagram.
Fig. 6 is upper and lower flat anvil main transformer shape forging pre-structure schematic diagram.
Fig. 7 is structural schematic diagram in upper and lower flat anvil main transformer shape forging.
Structural schematic diagram after the molding forging of Fig. 8 or more flat anvils.
Fig. 9 is the structural schematic diagram before the jumping-up of the forging deformation procedure chart of the present invention.
Figure 10 be the present invention forging deformation procedure chart jumping-up after structural schematic diagram.
Figure 11 is the main transformer shape forging pre-structure schematic diagram of flat anvil up and down of the present invention.
Figure 12 be the present invention the main transformer shape forging of flat anvil up and down in structural schematic diagram.
Figure 13 is structural schematic diagram after the molding of flat anvil up and down of the present invention is forged.
Specific implementation mode
As shown in Fig. 2, in the hydraulic press main transformer shape forging mode of the present invention, double-head arrow indicates machine direction in figure, i.e.,
Axial direction；1 hatching position of blank indicate ingot tail end, it is illustrated below herewith.
The implementation of technical solution of the present invention essentially consists in the design to forging tools, tooling and deformation scheme.According to production
Forging's block dimension when forging, carries out jumping-up, main transformer shape to blank 1 using upper and lower wide tablet (i.e. upper flat plate 4 and lower tablet 5), deforms
Forging rear annealing, alignment, inspection, ultrasound are carried out after forging to size is forged to after certain size, then by upper lower ram finishing
The work such as wave inspection and sawing are finally machined out, modifier treatment etc..
Here slab forging size wide up and down refers to the width l or straight after the wide b ＞ blank jumping-ups of plate of upper and lower wide tablet
Diameter d, therefore when the blank after jumping-up forges between upper and lower wide tablet, solid forging can be carried out, pulled out without the handing-over of multiple tup
Long forging, differs and tup handing-over etc. the non-uniform problem of deformation this avoid deformation between each tup, and then ensures
Forging compacting thoroughly inside forging, and obtain uniform fine grained texture.
(1) example is forged：
It is analyzed so that size is the forging of 650mm × 800mm × 1300mm as an example, forging drawing is as shown in figure 3, (figure
Paper size unit is mm)：
1), conventionally employed upper and lower flat anvil forging deformation procedure chart such as Fig. 4：
As shown in Figure 4,5,14500Kg ESR ingots are selected using 2 multiple length forgings, first by blank 1 upper upset plate 6, under
Jumping-up on platform 7 as shown in Figure 6,7, main transformer shape is carried out using the upper flat anvils 8 of 900mm wide, the lower flat anvils 9 of 900mm wide later, with
Afterwards, as shown in figure 8, using lower 11 forging molding of flat anvil of the upper flat anvils 10 of 700mm wide, 700mm wide, forging deformation process such as Fig. 4-instead
Shown in 8.
To ensure forging internal soundness it can be seen from Fig. 4-8, jumping-up is carried out first, due to being relatively large in diameter after jumping-up, really
Suitable anvil width ratio is protected, selects 900mm wide anvils to carry out main transformer shape forging first, after pulling out to 800mm × 1000mm, then is used instead
700mm wide anvils carry out forging molding.Since forging is longer, in forging process, need repeatedly lower hammer that can just be deformed to a time
When each tup junction, overturning are forged, there is forging inhomogeneities, and then influence the inhomogeneities of forging interior tissue in position,
Simultaneously because converting tup in tup handing-over, forging process, forging efficiency is set to substantially reduce, the production cost increases.
2) present invention is using upper and lower wide plate forging deformation procedure chart such as Fig. 9-13：
Using 2 multiple length forgings, 14500Kg ingots are selected, by 1 jumping-up of blank, main transformer shape on upper wide plate 4, lower wide plate 5, with
After use the upper flat anvils 10 of 700mm wide, 11 forging molding of lower flat anvil instead.Its specific forging deformation process is as described and depicted in figs. 9-13.
When being forged using upper wide plate 4, lower wide plate 5 it can be seen from Fig. 9-13, after jumping-up forging directly upper wide plate 4, under
Pulling forging is carried out between wide plate 5, since for wide plate, every time in forging process is that overall time is deformed into design size,
Every time deflection 25%~40%, therefore join there is no tup and deform problem of non-uniform between the peak occurred, paddy, and carry significantly
Permeability is forged inside high forging；It after 90 ° of overturning, is still disposably forged in place between upper and lower tablet, waits for pulling to 800mm × 1000mm
Afterwards, for ease of playing angle, forging molding is carried out using 700mm wide anvils.Therefore this method is succinct, efficient, avoids in forging process
Multiple transformation tool, tooling, and when upper and lower tup pulling forging the shortcomings that inhomogeneous deformation, while this method is conducive to forging
Internal forging is compacted thoroughly, is not only ensured to obtain uniformly tiny forging interior tissue, is also substantially increased forging efficiency.
By comparing above it is found that using upper and lower wide slab forging, is conducive to the forging inside forging and is compacted thoroughly, Jin Erti
The high uniformity of interior tissue；The forging method, which reduces, simultaneously changes anvil number in forging process, forging production efficiency is also big
It is big to improve (nearly 1/2) of forging time saving, to reduce the overall cost of heavy forging product.
The technical scheme is that according to forging drawing and ingot shape size, rational tool, tooling are selected, determines that hydraulic press is forged
Make mode of texturing.Its production process route is：Electrode for remelting base → upper and lower the slab forging of electroslag remelting → hydraulic press → upper and lower
Normalizing+tempering → inspection after flat anvil forging molding → forging, detection → machine add-on type → modifier treatment → inspection, detection → packaging,
Delivery.
Forging material used is CrNiMoV steel.
Specifically forging flow is：It is put down on ESR ingot heating → 5000T hydraulic presses, lower wide tablet main transformer shape forging to 800mm
Normalizing+tempering → surface examination, Physico-chemical tests (finished product point after the upper and lower flat anvil forging molding → forgings of × 1000mm → 700mm wide
Analysis, gas content, low power, nonmetal inclusion, prior austenite grain size, ultrasonic examination), blanking.It is 5000 tons to forge device therefor
Forge press.Main transformer shape forging is carried out on 5000 tons of upper and lower tablets of hydraulic press, every time deflection 25%~40% pulls out
After length to 800mm × 1000mm, the upper and lower flat anvil finishing forging and moldings of 700mm wide are used instead, the forging journey worked out according to forging technology
Sequence determines every time forging deformation amount of hydraulic press, blank is forged to the appearance and size being pre-designed, after being forged after forging
The work such as normalizing+tempering, alignment, inspection, ultrasonic examination, blanking, final production go out the uniform tiny high quality of interior tissue
Product.
Claims (4)
1. a kind of forging method of efficient whole uniform compaction deformation, it is characterised in that：Forging is carried out using upper and lower wide tablet
Whole upsetting pull forging recycles anvil finishing molding up and down after completing main transformer shape.
2. according to a kind of forging method of efficient whole uniform compaction deformation described in claim 1, it is characterised in that：Upper
In lower width flat board overall forging, wide tablet plate is wider than width or diameter after blank jumping-up；Upsetting is carried out using upper and lower wide tablet
Slightly, main transformer shape, when wide slab forging every time be it is disposable it is whole be deformed to position, and under multiple in non-traditional forging method
Hammer could deform in place；It is to be deformed to after certain size, then by upper lower ram finishing to forging size.
3. according to a kind of forging method of efficient whole uniform compaction deformation described in claim 1, it is characterised in that：Using
Up and down when width slab forging, forging directly carries out pulling forging between upper and lower wide tablet after jumping-up；When wide slab forging, per pass
Secondary is that overall time is deformed into design size, after 90 ° of overturning, is still disposably forged in place between upper and lower wide tablet, per pass
Secondary deflection is 25%~40%, until completing main transformer shape forging；It avoids between tup, tup junction deformation problem of non-uniform,
The forging permeability inside forging is considerably increased, the non-uniform problem of forging deformation between each tup when overcoming anvil forging up and down, really
It has protected forging inside forging and has been compacted and obtains uniform fine grained texture thoroughly.
4. according to a kind of forging method of efficient whole uniform compaction deformation described in claim 1, it is characterised in that：Upper
Between lower width tablet after main transformer shape, for ease of playing angle, it is directly changed to 700mm wide anvil forging moldings up and down.
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| CN201810649516.7A CN108465762A (en) | 2018-06-21 | 2018-06-21 | A kind of forging method of efficient whole uniform compaction deformation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759531A (en) * | 2019-01-10 | 2019-05-17 | 燕山大学 | The section X based on center compacting pulls out method |
| CN111250640A (en) * | 2020-02-29 | 2020-06-09 | 河南中原特钢装备制造有限公司 | Hot working method of large-diameter refined hot work die steel forging |
| CN111390086A (en) * | 2020-04-03 | 2020-07-10 | 扬州诚德重工有限公司 | Method for producing forge piece by unstability forging of continuous casting plate blank |
| CN111390082A (en) * | 2020-03-19 | 2020-07-10 | 燕山大学 | Device and process for forging medium plate blank |
| CN111496155A (en) * | 2020-04-28 | 2020-08-07 | 河南中原特钢装备制造有限公司 | Forging method for enhancing compaction effect of 42CrMo continuous casting billet |
| CN114012008A (en) * | 2021-10-10 | 2022-02-08 | 河南中原特钢装备制造有限公司 | Production process of large-specification 022Cr23Ni5Mo3N forge piece |
| CN114012010A (en) * | 2021-10-29 | 2022-02-08 | 河南中原特钢装备制造有限公司 | Integral hot-working forming method for high-pressure gas cylinder shell |
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| JP2013046918A (en) * | 2011-08-29 | 2013-03-07 | Mitsubishi Heavy Ind Ltd | Valve element in swing valve, method for manufacturing the same, and reheat steam stop valve having the valve element |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109759531A (en) * | 2019-01-10 | 2019-05-17 | 燕山大学 | The section X based on center compacting pulls out method |
| CN111250640A (en) * | 2020-02-29 | 2020-06-09 | 河南中原特钢装备制造有限公司 | Hot working method of large-diameter refined hot work die steel forging |
| CN111390082A (en) * | 2020-03-19 | 2020-07-10 | 燕山大学 | Device and process for forging medium plate blank |
| CN111390082B (en) * | 2020-03-19 | 2021-03-16 | 燕山大学 | Device and process for forging medium plate blank |
| CN111390086A (en) * | 2020-04-03 | 2020-07-10 | 扬州诚德重工有限公司 | Method for producing forge piece by unstability forging of continuous casting plate blank |
| CN111390086B (en) * | 2020-04-03 | 2021-07-30 | 扬州诚德重工有限公司 | Method for producing forge piece by unstability forging of continuous casting plate blank |
| CN111496155A (en) * | 2020-04-28 | 2020-08-07 | 河南中原特钢装备制造有限公司 | Forging method for enhancing compaction effect of 42CrMo continuous casting billet |
| CN111496155B (en) * | 2020-04-28 | 2022-01-07 | 河南中原特钢装备制造有限公司 | Forging method for enhancing compaction effect of 42CrMo continuous casting billet |
| CN114012008A (en) * | 2021-10-10 | 2022-02-08 | 河南中原特钢装备制造有限公司 | Production process of large-specification 022Cr23Ni5Mo3N forge piece |
| CN114012008B (en) * | 2021-10-10 | 2023-08-25 | 河南中原特钢装备制造有限公司 | Production process of large-size 022Cr23Ni5Mo3N forge piece |
| CN114012010A (en) * | 2021-10-29 | 2022-02-08 | 河南中原特钢装备制造有限公司 | Integral hot-working forming method for high-pressure gas cylinder shell |
| CN114012010B (en) * | 2021-10-29 | 2023-08-18 | 河南中原特钢装备制造有限公司 | Integral thermal processing forming method for high-pressure gas cylinder shell |
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Application publication date: 20180831 |