CN107626868A - Manufacturing process is constructed in the classification of hourglass shape metal - Google Patents
Manufacturing process is constructed in the classification of hourglass shape metal Download PDFInfo
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Abstract
The present invention discloses a kind of hourglass shape metal classification and constructs manufacturing process, it is characterised in that carries out one-level first by conventional construction method and constructs, obtains blank, blank is further forged into round platform or square table, the blank primitive constructed as next stage；Carry out N levels afterwards to construct, by two blank primitive stackings together to form hourglass shape on the whole；Two blank primitives for being stacked to hourglass shape are packaged into hourglass shape prefabricated blank；Make the interfacial weld between two blank primitives that hourglass shape prefabricated blank is made into blank by smithwelding；Blank is further forged into round platform or square table, the blank primitive constructed as N+1 levels；Above step is repeated to realize that multistage is constructed, prepares larger blank.Because hourglass shape intermediate sizes are small, upper and lower ends size is big, and the interlude of deformation process small-medium size preferentially deforms, therefore the large deformation at intermediate interface can be achieved under smaller pressure.
Description
Technical field
The present invention relates to a kind of metal material manufacture method, is specifically classified the mode of constructing by hourglass shape and realizes gold
Category or the processing method of metal_based material shaping.This method is not only applicable to the manufacture that homogenizes of homogeneous material, but also is applicable
In the composite manufacturing of dissimilar materials.
Background technology
Metal material is material most indispensable in development of human history, advantageous cheapness, tough based on its
The features such as property, durability, metal occupies leading position all the time in contemporary material industry.By thousands of years of accumulation, Ren Leiyi
A whole set of quite ripe metal material production technology, such as the production of traditional steel are grasped after smelting, casting, pressure processing
And heat treatment step, product quality is stable, cheap.The metal-base composites occurred in recent years combine metal material with
The advantages of nonmetallic materials, have the characteristics that proportion is small, specific strength is high, further widened the application of metal material.
Some key areas require higher to the bond strength of compound interface, and traditional Explosion composite mode is due in normal temperature
Lower pressure bonding, microscopic defect be present on interface, be difficult to meet to require, it is necessary to develop relatively reliable, safer new
Metal composite method.
Metal constructs manufacturing process, and being a kind of metal base smaller using polylith volume as constructing primitive is made Big Gold
Belong to the increasing material manufacturing method of base.This method by prepare multiple primitives, multiple primitives are stacked to predetermined shape, will be stacked to it is pre-
Multiple primitives of setting shape are packaged into prefabricated blank, by the interfacial weld between the multiple primitives of smithwelding so that prefabricated blank to be made
The steps such as blank realize the purpose using less strand, forging stock or strip plate manufacture large forgings.However, constructing blank manufacture
During, due to accidentalia such as interface pollution or welding seam failure cause the interface vacuum breaker between primitive and cause to scrap can
Energy property is very big.For more than 100t ultra-large type forging, the loss that the failure at single interface causes forging integrally to be scrapped is huge, urgently
It need to be avoided risk by effective method.And because blank gross weight is excessive, needs badly to reduce by effective means and pressed needed for forging
Power.
The content of the invention
It is an object of the invention to provide a kind of hourglass shape for preparing band large-scale metal material or composite material to be classified structure
Manufacturing process is built, constructing for more ingot blanks, forging stock or strip plate is carried out using conventional construction method first, blank smithwelding will be constructed
After obtain blank.Wherein smithwelding refers to during high temperature forging, interface is fully welded by the atoms permeating between different primitives
Close and realize the process of metallurgical connection.After completing routine and constructing process, by blank forging into round platform or square table, blank is obtained
Primitive.After blank primitive is carried out into Surface Machining and cleaning, two blank primitives are packaged together, it is prefabricated to turn into hourglass shape
Base, and interface internal is kept high vacuum state, then apply the forge welding process with the characteristics of jumping-up large deformation, make two blanks
Primitive is combined together into blank.Blank can be again forged into round platform or square table blank primitive, be repeated several times two
Part round platform or square table blank primitive smithwelding construct referred to as one-level each time into the process of a bigger blank.Carry out multistage
After constructing, it is possible to achieve the manufacture of ultra-large type forging.
Manufacturing process is constructed in a kind of hourglass shape metal classification of the present invention, it is characterised in that including：
One-level is constructed constructs with N levels, wherein N >=2,
The one-level, which is constructed, to be comprised the following steps：
Prepare multiple primitives；
Multiple primitives are stacked to cylinder or cuboid；
The multiple primitives for being stacked to cylinder or cuboid are packaged into prefabricated blank；
It is by the interfacial weld between the multiple blank primitives of smithwelding so that prefabricated blank is made into blank, blank is further
Round platform or square table are forged into, the blank primitive constructed as next stage, the big plane one of the blank of the round platform or square table
The cross-sectional area at end is more than the cross-sectional area of facet one end；
The N levels construct including：
The blank primitive stacking of the round platform to be formed or square table is constructed together by N-1 levels by two so that have compared with
Facet one end of small cross-sectional area contacts with each other to form hourglass shape on the whole；Two blanks of hourglass shape will be stacked to
Primitive is packaged into hourglass shape prefabricated blank；
Make the interfacial weld between two blank primitives that hourglass shape prefabricated blank is made into blank by smithwelding；
The blank that smithwelding obtains further is forged into round platform or square table, the blank primitive constructed as N+1 levels；
The step of N levels are constructed is repeated, to prepare larger blank, process is constructed in repetition until billet weight reaches
By blank forging to final forging's block dimension after target weight.
The technical scheme is that：
Manufacturing process is constructed in a kind of hourglass shape metal classification, is comprised the following steps：
Blank primitive is prepared first by conventional construction method：Polylith small dimension metal base (for strand, forging stock or can be rolled
Base) Vacuum Package is carried out after stacking, apply the forge welding process with the characteristics of jumping-up large deformation to it afterwards, make polylith small dimension golden
Category base is combined together into blank.Blank is further forged into round platform or square table, obtains blank primitive.The round platform or
The cross-sectional area of big plane one end of the blank of square table is more than the cross-sectional area of facet one end；
Then blank primitive is constructed, soldering and sealing is into prefabricated blank：Two pieces of round platforms or square table blank primitive had into smaller horizontal stroke
Facet one end of area of section contacts with each other, and big specification cuboid or cylinder hourglass shape is stacked to, using cheap metal plate
Blank overall package after constructing is into case, and to vacuumize process in case；Or using vacuum welding mode by between two primitives
Interface；Blank after encapsulation is referred to as hourglass shape prefabricated blank；
Then by the smithwelding of hourglass shape prefabricated blank into blank：Hourglass shape prefabricated blank after encapsulation is heated into assigned temperature to go out
Stove, forged on a hydraulic press, implement the measure of jumping-up large deformation, make the abundant soldering in interface, realized metallurgical connection, turn into one
The blank of body；
Blank primitive is made after blank is further forged to repeat to construct process：The blank being integrally formed after smithwelding is entered one
Step is forged into round platform or square table.Using round platform or square table blank as blank primitive, repeat above to be manufactured into blank primitive
Blank constructs process, repeats the process of constructing every time and is referred to as one-level, until blank weight reaches target weight.
Finally it is configured to device：Blank is further shaped using pressure processing modes such as forging, rollings, using machining
Mode Accurate Shaping is final specification size.
This method comprises the following steps that：
The first step, round platform or square table blank primitive are manufactured using conventional construction method；
Second step, processing, cleaning blank primitive surface；
3rd step, two pieces of blank primitives are stacked to hourglass shape；
4th step, the blank primitive after stacking is encapsulated, each contact interface is in vacuum state；
5th step, heated before implementing forging to the hourglass shape prefabricated blank after encapsulation；
6th step, jumping-up large deformation is implemented to hourglass shape prefabricated blank, obtains blank；
7th step, by blank forging into round platform or square table, blank primitive is obtained, repeats second step to the mistake of the 6th step
Journey, until blank weight reaches target weight；
8th step, blank is shaped to final specification size.
Construct in the first step of manufacturing process in the classification of hourglass shape metal, using conventional construction technology, metal base is cut
Be prepared into multiple primitives, Surface Machining cleaning, be stacked to cylinder or cuboid, be packaged into prefabricated blank, smithwelding after hair is made
Base, this process are referred to as the first order and constructed.Blank is further forged into round platform or square table, obtains blank primitive.The round platform
Or the cross-sectional area of big plane one end of the blank of square table is more than the cross-sectional area of facet one end.Round platform or fang platform side
Face is 0 °~30 ° relative to the angle of inclination of axis, and side angle of inclination can also constantly be changed with always consistent,
If round platform or fang platform side angle of inclination are to be gradually reduced by big plane one end to facet one end, and finally it is decreased to 0 °, makes
Two pieces of blank primitive facets seamlessly transit with respect to contact interface after stacking.The height and Breadth Maximum of every piece of blank primitive/
The ratio of length/diameter is no more than 1.5: 1, Upsetting convenient to carry out.
Construct in the second step of manufacturing process, ground using angle, steel brush polishing blank primitive surface in the classification of hourglass shape metal,
Scale removal, if necessary using milling machine finished surface.Then using the organic solvents such as acetone, alcohol cleaning surface, table is ensured
Face high level of cleanliness, exposes fresh metal.
Constructed in the classification of hourglass shape metal in the 3rd step of manufacturing process, two pieces of round platforms or square table blank primitive are had
Facet one end of smaller cross-sectional area area contacts with each other, and is stacked to big specification cuboid or cylinder hourglass shape, makes edge pair
Together, the ratio of total height and Breadth Maximum/length/diameter is no more than 3: 1 after stacking.
Constructed in the classification of hourglass shape metal in the 4th step of manufacturing process, using cheap metal plate by the blank base after stacking
First overall package is into case, and casing is reserved to vacuumize interface, to blocking interface again after vacuumize process in case；Or by the hair after stacking
Base primitive is integrally put into vacuum chamber, then using vacuum welding mode by the interface between two primitives, the welding of package interface
Depth is 10~50mm.Hourglass shape prefabricated blank is obtained after the completion of encapsulation.
Constructed in the classification of hourglass shape metal in the 5th step of manufacturing process, the prefabricated blank for welding completion is sent into heating furnace adds
Heat, heating-up temperature are 0.8 to 0.9Tm, and Tm is the fusing point of material, and unit is DEG C.Preferable temperature is 0.85Tm.
Constructed in the classification of hourglass shape metal in the 6th step of manufacturing process, the hourglass shape prefabricated blank after heating is horizontal positioned
In on forging press operating platform, jumping-up is carried out along short transverse (i.e. perpendicular to interface direction) to blank using upset plate；Pressure
The 10-50% of blank total height, this process are referred to as smithwelding, and smithwelding obtains blank after terminating, and this process is referred to as the second level and constructed.
In forging process, if the interface between two blank primitives could not reach complete soldering, two blank primitives are separated and forged
The size for returning to blank primitive in the first step is made, is constructed with re-starting the second level.
Constructed in the classification of hourglass shape metal in the 7th step of manufacturing process, the blank that the 6th step obtains further is forged into
Round platform or square table, obtain blank primitive.By the blank primitive of two pieces of identical sizes carry out again Surface Machining, cleaning, stacking,
Encapsulation, smithwelding, that is, repeat second step to the process of the 6th step, this process is referred to as the third level and constructed.This process can be repeated several times, often
It is secondary to repeat to construct referred to as one-level.Construct blank primitive weight before rear blank weight is constructed for this time every time 2 times, are carried out more
Level is constructed untill blank weight reaches target weight.
Constructed in the classification of hourglass shape metal in the 8th step of manufacturing process, the blank after multistage is constructed is by forging, rolling
The pressure processing modes such as system further shape, and use machining mode Accurate Shaping as final specification size.
The present invention breaches the Traditional Thinking that the mother metal of metal device can only be larger than, using quality is more excellent, cost more
Low micro metal base constructs shaping, has the following advantages and advantages：
1st, the manufacture that homogenizes of large scale metal device is realized.It is used as using the smaller metal base of polylith volume and constructs base
Member, because setting rate is fast, therefore its homogeneity of ingredients is far better than the band large-scale metal base of traditional monoblock cast, on this basis
Significant gross segregation is not present in the large scale metal device constructed.
2nd, the densification manufacture of large scale metal device is realized.It is used as using the smaller metal base of polylith volume and constructs base
Member, because setting rate is fast, can almost realize while solidify, thus blank it is inner integrated shrinkage cavity it is loose few.Soldering interface
Through deform, be incubated and multiway forging after, compactness is higher than forging made of the overall strand of tradition.
3rd, the sublimate manufacture of large scale metal device is realized.It is used as using the smaller metal base of polylith volume and constructs base
Member, it is low due to preparing cost, difficulty, therefore the sublimate of primitive can be realized using various flexible method of refining, it is basic herein
On the large scale metal device high purity constructed in forging made of the overall strand of tradition.
4th, the low cost manufacture of large scale metal device is realized.Because the metal base for preparing small volume can use continuous casting etc.
The big means of production, the molding means that its manufacturing cost metal base larger far below preparation volume must use, therefore can be significantly
Reduce manufacturing cost.In addition, using continuous casting billet as primitive is constructed, rising head, mouth of a river loss without traditional steel ingot, material can be lifted
Expect utilization rate more than 15%.
5th, cleaning, stabilizing manufacture for large scale metal device is realized.Conventional die castings method prepares metal base and needed manually
Prepare mould, running channel, insulation material, while riser compound and coverture have larger environmental pollution after cast.Using sand
Manufacturing process is constructed in the metal classification of leakage shape, and process can realize full automation, can not only improve work situation, and reduce
Human factor influences, and product quality will more be stablized.
6th, the high reliability graded m anufacturing of super-large component is realized.Traditional construction method is directly to enter polylith metal base
Row is constructed, in blank manufacturing process is constructed, because accidentalia such as interface pollution or welding seam failure cause interface vacuum breaker
Cause the possibility scrapped very big.For example, for more than 100t ultra-large type forging, continuous casting billet is used using traditional construction method
Constructed, the number of plies of continuous casting billet stacking more than 10 layers, between any two layers the failure at single interface forging will be caused integrally to report
Useless, loss is huge.By classification construct manufacturing process can realize it is progressively big with small system, only the first order construct during blank
In multiple interfaces be present, follow-up multistage only exists an interface every time during constructing, can effectively reduce interface vacuum breaker
Cause the risk that forging is integrally scrapped.
7th, the small pressure manufacture of super-large component is realized.Traditional construction method is that polylith metal base is directly carried out into structure
Build, it is cylinder or cuboid to construct rear prefabricated blank, and press pressure needed for deformation is larger.Constructed using the classification of hourglass shape metal
Method, because hourglass shape intermediate sizes are small, upper and lower ends size is big, and the interlude of deformation process small-medium size preferentially deforms, because
The large deformation at intermediate interface can be achieved in this under smaller pressure, and so as to realize, metallurgical interface combines between metal elements, drop
Low super-large component constructs the pressure needed for shaping.
Brief description of the drawings
Fig. 1 a to Fig. 1 h are present invention process flow chart, wherein, Fig. 1 a displays are obtained prefabricated using conventional construction technology
Base；Prefabricated blank smithwelding into blank, and is further forged into round platform or square table by Fig. 1 b, obtains blank primitive；Fig. 1 c displays will
Blank primitive Surface Machining is smooth, exposes fresh metal, and cleaned；Fig. 1 d be shown under vacuum bad border to blank primitive it
Between interface surrounding carry out soldering and sealing, to obtain hourglass shape prefabricated blank；Fig. 1 e, which show hourglass shape prefabricated blank being put into high temperature furnace, to be added
Heat；Fig. 1 f, which are shown on forging press, uses short transverse jumping-up of the upset plate along hourglass shape prefabricated blank；Fig. 1 g show Upsetting
In place, the abundant soldering of defect is made to obtain blank；Fig. 1 h, which are shown, further to be forged blank, is processed into final part shape and chi
It is very little.
Fig. 2 is the construction technology schematic diagram of the embodiment of the present invention 1, and the first order is constructed prepares second using conventional construction technology
Level constructs the square table blank primitive used, and the two pieces side that the first order is constructed to acquisition using the method for the present invention is constructed in the second level
Platform shape blank primitive is made as the third level and constructs the square table blank primitive used, and the third level constructs the method using the present invention
The two pieces square table blank primitive that the second level is constructed to acquisition is prepared into larger blank.
Fig. 3 is the construction technology schematic diagram of the embodiment of the present invention 2, and the first order is constructed prepares second using conventional construction technology
Level constructs the truncated cone-shaped blank primitive used, and the two pieces circle that the first order is constructed to acquisition using the method for the present invention is constructed in the second level
Platform shape blank primitive is made as the third level and constructs the truncated cone-shaped blank primitive used, and the third level constructs the method using the present invention
The two pieces truncated cone-shaped blank primitive that the second level is constructed to acquisition is prepared into larger blank.
Embodiment
Fig. 1 a to Fig. 1 h are present invention process flow chart, wherein, Fig. 1 a displays are obtained prefabricated using conventional construction technology
Base；Prefabricated blank smithwelding into blank, and is further forged into round platform or square table by Fig. 1 b, obtains blank primitive；Fig. 1 c displays will
Blank primitive Surface Machining is smooth, exposes fresh metal, and cleaned；Fig. 1 d be shown under vacuum bad border to blank primitive it
Between interface surrounding carry out soldering and sealing, to obtain hourglass shape prefabricated blank；Fig. 1 e, which show hourglass shape prefabricated blank being put into high temperature furnace, to be added
Heat；Fig. 1 f, which are shown on forging press, uses short transverse jumping-up of the upset plate along hourglass shape prefabricated blank；Fig. 1 g show Upsetting
In place, the abundant soldering of defect is made to obtain blank；Fig. 1 h, which are shown, further to be forged blank, is processed into final part shape and chi
It is very little.
Fig. 2 is the construction technology schematic diagram of the embodiment of the present invention 1, and the first order is constructed prepares second using conventional construction technology
Level constructs the square table blank primitive used, and the two pieces side that the first order is constructed to acquisition using the method for the present invention is constructed in the second level
Platform shape blank primitive is made as the third level and constructs the square table blank primitive used, and the third level constructs the method using the present invention
The two pieces square table blank primitive that the second level is constructed to acquisition is prepared into larger blank.
Embodiment 1
The target product of the present embodiment is 316 stainless steel annular elements.Use continuous casting mode first, cast width 1000mm,
Thickness 300mm continuous casting steel billet, its steel grade are 316H.Then the continuous casting billet primitive that length is 1000mm is cut, after processing, cleaning
Soldering and sealing is into prefabricated blank in vacuum chamber.10t level blank primitives are obtained after prefabricated blank is carried out into smithwelding and further forging.By 4
10t level blanks primitive obtains 2 20t level blank bases after carrying out Surface Machining, cleaning, stacking, encapsulation, smithwelding and further forging
Member.1 40t level blank is obtained after 2 20t level blanks primitives are carried out into Surface Machining, cleaning, stacking, encapsulation, smithwelding.Finally
Blank forging is circularized into part.Comprise the following steps that：
The first step, blank primitive is manufactured using conventional construction method.It is 1000 × 1000 × 300mm continuous casting billets to cut specification
16 pieces, continuous casting billet is processed, after cleaning in vacuum chamber prefabricated blank of every 4 pieces of stacking soldering and sealing into 1000 × 1000 × 1200mm.
Will prefabricated blank carry out smithwelding after obtain 10t level blanks, be that big plane is 1240 × 1240mm by blank forging, facet 870
× 870mm, it is highly 1050mm, the constant square table in side angle of inclination, the blank is 10t level blank primitives.4 are obtained altogether
Block 10t level blank primitives.
Second step, process, clean surface to be welded.Using planer-type milling machine processing 10t level blank primitives surface, then use
Acetone cleans, and ensures apparent height cleaning, exposes fresh metal.
3rd step, stacking is carried out to 10t level blanks primitive.Two pieces of 10t level blanks primitives are subjected to stacking, turned into after stacking
1240 × 1240mm of top surface and bottom surface, 870 × g70mm of middle most thin portion point, height 2100mm hourglass shape, weight is about 20t.
4th step, vacuum electron beam welding is carried out to 10t level blanks primitive.By the 10t level blank primitive surroundings after stacking
Vacuum electron beam welding is carried out, depth of weld 50mm, 20t level prefabricated blanks are obtained after the completion of welding.
5th step, heated before implementing forging to 20t levels prefabricated blank.The prefabricated blank feeding heating stove heat completed will be welded, added
Hot temperature is 1200 DEG C.
6th step, jumping-up is implemented to 20t levels prefabricated blank.It is flat that 20t level prefabricated blanks after heating are positioned over forging press operation
On platform, make 20t level prefabricated blanks short transverse vertically.Jumping-up, pressure are carried out to prefabricated blank along short transverse using upset plate
The 50% of lower prefabricated blank total height.20t level blanks are obtained after the completion of deformation.By blank forging to big plane be 1550 ×
1550mm, facet are 1085 × 1085mm, the highly square table for 1320mm, turn into 20t level blank primitives.2 pieces are obtained altogether
20t level blank primitives.
7th step, carry out the manufacture of 40t level blanks.By 2 pieces of 20t level blanks primitives carry out Surface Machinings, cleaning, stacking,
40t level prefabricated blanks are obtained after encapsulation.40t level blanks will be turned into after prefabricated blank smithwelding, that is, repeat second step to the process of the 6th step.
8th step, 40t level blank forgings are shaped to final forging's block dimension, forging is annular, internal diameter 1030mm, external diameter
It is highly 1000mm for 2630mm.
Fig. 3 is the construction technology schematic diagram of the embodiment of the present invention 2, and the first order is constructed prepares second using conventional construction technology
Level constructs the truncated cone-shaped blank primitive used, and the two pieces circle that the first order is constructed to acquisition using the method for the present invention is constructed in the second level
Platform shape blank primitive is made as the third level and constructs the truncated cone-shaped blank primitive used, and the third level constructs the method using the present invention
The two pieces truncated cone-shaped blank primitive that the second level is constructed to acquisition is prepared into larger blank.
Embodiment 2
The target product of the present embodiment is rotor forging.Continuous casting mode, cast width 1600mm, thickness are used first
300mm continuous casting steel billet, its steel grade are 16Mn.Then the continuous casting billet primitive that length is 1600mm is cut, true after processing, cleaning
Soldering and sealing is into prefabricated blank in empty room.40t level blank primitives are obtained after prefabricated blank is carried out into smithwelding and further forging.By 4 40t levels
Blank primitive obtains 2 80t level blank primitives after carrying out Surface Machining, cleaning, stacking, encapsulation, smithwelding and further forging.Will
2 80t level blanks primitives obtain 1 160t level blank after carrying out Surface Machining, cleaning, stacking, encapsulation, smithwelding.Finally by hair
Base is forged into rotor.Comprise the following steps that：
The first step, blank primitive is manufactured using conventional construction method.It is 1600 × 1600 × 300mm continuous casting billets to cut specification
28 pieces, continuous casting billet is processed, after cleaning in vacuum chamber prefabricated blank of every 7 pieces of stacking soldering and sealing into 1600 × 1600 × 2100mm.
40t level blanks are obtained after prefabricated blank is carried out into smithwelding, are that big plane is φ 2250mm, facet φ by blank forging
1650mm, the highly truncated cone-shaped for 1750mm, it is arc transition in the blank side close to facet position, arc radius is
1000mm.The blank is 40t level blank primitives.4 pieces of 40t level blank primitives are obtained altogether.Second step, process, clean table to be welded
Face.Using planer-type milling machine processing 40t level blank primitives surface, then cleaned using acetone, ensure apparent height cleaning, exposed new
Fresh metal.
3rd step, stacking is carried out to 40t level blanks primitive.Two pieces of 40t level blanks primitives are subjected to stacking, turned into after stacking
Top surface and bottom surface φ 2250mm, middle most thin portion divide φ 1650mm, height 3500mm hourglass shape, and most thin portion point is deposited among hourglass
In the arc transition that radius is 1000mm, weight is about 80t.
4th, vacuum electron beam welding is carried out to 40t level blanks primitive.By the 40t level blank primitive surroundings after stacking
Vacuum electron beam welding is carried out, depth of weld 50mm, 80t level prefabricated blanks are obtained after the completion of welding.
5th step, heated before implementing forging to 80t levels prefabricated blank.The prefabricated blank feeding heating stove heat completed will be welded, added
Hot temperature is 1200 DEG C.
6th step, jumping-up is implemented to 80t levels prefabricated blank.It is flat that 80t level prefabricated blanks after heating are positioned over forging press operation
On platform, make 80t level prefabricated blanks short transverse vertically.Jumping-up, pressure are carried out to prefabricated blank along short transverse using upset plate
The 50% of lower prefabricated blank total height.80t level blanks are obtained after the completion of deformation.It is φ 2900mm by blank forging to big plane, it is small
Plane is φ 2250mm, the highly truncated cone-shaped for 2000mm, is arc transition close to facet position side, and arc radius is
1500mm, obtain 80t level blank primitives.2 pieces of 80t level blank primitives are obtained altogether.
7th step, carry out the manufacture of 160t level blanks.By 2 pieces of 80t level blanks primitives carry out Surface Machinings, cleaning, stacking,
160t level prefabricated blanks are obtained after encapsulation.160t level blanks will be turned into after prefabricated blank smithwelding, that is, repeat second step to the mistake of the 6th step
Journey.
8th step, 160t level blank forgings are shaped to final forging's block dimension, forging is rotor forging, total length
9000mm, maximum gauge 3000mm, minimum diameter 700mm.
Claims (11)
1. manufacturing process is constructed in a kind of hourglass shape metal classification, it is characterised in that including：
One-level is constructed constructs with N levels, wherein N >=2,
The one-level, which is constructed, to be comprised the following steps：
Prepare multiple primitives；
Multiple primitives are stacked to cylinder or cuboid；
The multiple primitives for being stacked to cylinder or cuboid are packaged into prefabricated blank；
By the interfacial weld between the multiple blank primitives of smithwelding so that prefabricated blank is made into blank, blank is further forged
Into round platform or square table, the blank primitive constructed as next stage, big plane one end of the blank of the round platform or square table
Cross-sectional area is more than the cross-sectional area of facet one end；
The N levels construct including：
The blank primitive stacking of the round platform to be formed or square table is constructed together by N-1 levels by two so that there is smaller horizontal stroke
Facet one end of area of section contacts with each other to form hourglass shape on the whole；
Two blank primitives for being stacked to hourglass shape are packaged into hourglass shape prefabricated blank；
Make the interfacial weld between two blank primitives that hourglass shape prefabricated blank is made into blank by smithwelding；
The blank that smithwelding obtains further is forged into round platform or square table, the blank primitive constructed as N+1 levels；
The step of N levels are constructed is repeated, to prepare larger blank, process is constructed in repetition until billet weight reaches target
By blank forging to final forging's block dimension after weight.
2. manufacturing process is constructed in hourglass shape metal classification according to claim 1, it is characterised in that round platform or square table side
Face is 0 °~30 ° relative to the angle of inclination of axis.
3. manufacturing process is constructed in hourglass shape metal classification according to claim 2, it is characterised in that round platform or square table side
Face angle of inclination is always consistent.
4. manufacturing process is constructed in hourglass shape metal classification according to claim 2, it is characterised in that round platform or square table side
Face angle of inclination is gradually reduced by big plane one end to facet one end, is finally decreased to 0 °.
5. manufacturing process is constructed in hourglass shape metal classification according to claim 1, it is characterised in that two blank primitive heaps
Pile into the height of hourglass shape be no more than 3: 1 with the ratio of Breadth Maximum/length/diameter.
6. manufacturing process is constructed in hourglass shape metal classification according to claim 1, it is characterised in that the hourglass shape is length
Cube or cylinder hourglass shape.
7. manufacturing process is constructed in hourglass shape metal classification according to claim 1, it is characterised in that makes two by smithwelding
The step of interfacial weld between blank primitive by hourglass shape prefabricated blank to be made blank includes heating preforms, heating-up temperature model
It is trapped among between 0.8-0.9Tm, Tm is the fusing point of material, and unit is DEG C, it is preferable that heating-up temperature 0.85Tm, and then will
Hourglass shape prefabricated blank after heating is positioned on forging press operating platform and forged and pressed so that hourglass shape prefabricated blank deforms.
8. manufacturing process is constructed in hourglass shape metal classification according to claim 7, it is characterised in that deflection is hourglass shape
The 10%-50% of prefabricated blank total length on deformation direction.
9. manufacturing process is constructed in hourglass shape metal classification according to claim 8, it is characterised in that deformation direction is hourglass
Shape prefabricated blank short transverse, i.e., the direction at interface between two blank primitives.
10. manufacturing process is constructed in hourglass shape metal classification according to claim 9, in forging and stamping prefabricated blank prefabricated blank is become
During shape, when the cross-sectional area of prefabricated blank is substantially identical from both ends to centre, stop deformation.
11. manufacturing process is constructed in metal classification according to claim 1, it is characterised in that constructs step performing the N levels
When rapid, if during by the interfacial weld between two blank primitives of smithwelding so that prefabricated blank is made into blank,
Interface between two blank primitives could not reach complete soldering, can separate two blank primitives and forge and return to N-1 level structures
The round platform or square table size of blank primitive at the end of building, constructed with the N levels carried out again.
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