CN101912889A - Distributive extrusion process method and distributive extrusion mold thereof - Google Patents
Distributive extrusion process method and distributive extrusion mold thereof Download PDFInfo
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Abstract
The invention discloses a distributive extrusion process method, which comprises the following steps of: heating a refined steel ingot to the temperature of between 1,050 and 1,250 DEG C, cutting a dead head of the steel ingot, and upsetting the steel ingot; and punching a centre hole on the upset steel ingot, extruding the steel ingot downwards to thermally perforate the steel ingot along the centre hole of an upper surface of the steel ingot by using a first perforating needle, fixedly positioning the steel ingot into a prestressed extrusion cylinder, extruding metal downwards along the centre hole of the steel ingot at different angles by using an extrusion punch so as to distributively extrude the steel ingot until an upper end face of the steel ingot is flush, and finishing the steel ingot by using a finished extrusion shaft to make the wall thickness of a shell of the steel ingot uniform, wherein the upper end of the extrusion punch of which the cross sectional area is smaller than that of the extrusion shaft is fixedly arranged at the lower end of the extrusion shaft; the prestressed extrusion cylinder, the extrusion shaft and the center of the extrusion punch are collinear; and the prestressed extrusion cylinder is a barrel-shaped cylinder of which the inside diameter of an upper opening is greater than the outside diameters of the extrusion shaft and the extrusion punch. The prepared shell has the advantages of uniform wall thickness, no crack and other defects, and high reliability and strength.
Description
Technical field
The present invention relates to a kind of metal working process method and related die thereof, particularly a kind of distributive extrusion process method and distributed extrusion die thereof.
Background technology
The development of nuclear power has been brought up to first of national strategic aim and the national development ten big support tasks, the autonomy-oriented of the pressure vessel of reactor (production domesticization) has been mentioned unprecedented height in the nuclear power nuclear island, China's Qinshan and Daya Bay nuclear power plant are logical and Nippon Steel import from French avens, cost an arm and a leg.Be the development clean energy resource, reduce the CO2 discharging, China's planning increases by the nuclear power installed capacity of 8,000 ten thousand KW again at the year two thousand twenty, needs 80 of the pressure vessels of 1,000,000 KW levels approximately, and just by 400,000 KW housing calculation of price, its total price is at 400～48,000,000,000 yuan.This complex engineering of autonomous manufacturing and the technical problem of nuclear pressure housing is badly in need of solving rapidly in China.
The nuclear-power reactor pressure vessel adopts saddle ring expansion, the reaming of hollow steel ingot mandrel and the compacting of slab end socket to form through the manufacturing of girth welding technology more at present, and after Soviet Union's Chernobyl nuclear power accident, longitudinal seam welding is unallowed on the nuclear pressure shell.Present nuclear pressure housing has adopted saddle ring expansion technology, makes earlier five rings, and the circumferential weld that these rings the are become straight drum part of welding the formation housing is made end socket by thick plate stretching or compacting more then, then straight drum part and end socket is welded.The best technology yet this technology still can not be said so, clearly, no matter be that saddle forging or end socket slab are suppressed or drawn, not the shaping under the three-dimensional compressive stress state, forming process is accompanied by local tension, thereby there is hidden danger in the closed and reparation of crackle and defective.
Present this processing technology is the forming manufacturing technology of the long flow process that is formed separately of a kind of thimble body and end socket, steel ingot is made the annular element of band circular hole through special open die forging blank-making technology, could use above-mentioned saddle forging then, a plurality of heavy annulus that are shaped, to after its processing, the heat treatment more one by one weldering get up to form straight barrier part; Suppress or draw the heavy end socket of manufacturing with thick metal plate, again with low head and straight barrel welding, and carry out corresponding heat treatment and processing, make the pressure vessel body, cover again upper cover a complete reactor nuclear pressure housing, this manufacturing process is long, link is many, cycle is long, and efficient is low, and reliability is low.
Summary of the invention
In order to remedy above deficiency, the invention provides a kind of distributive extrusion process method and distributed extrusion die thereof, the wall thickness of the housing that this distributive extrusion process method forms is even, and the closure of crackle and defective is repaired thoroughly, the reliability of housing and intensity height.
The present invention for the technical scheme that solves its technical problem and adopt is: a kind of distributive extrusion process method, and its step is as follows:
A. refining steel ingot: high temperature is heated to 1050 and spends between 1250 degree;
B. excise the steel ingot rising head: whether various flame cutting methods such as available oxygen-acetylene in view of present steel-making level needs sometimes with steel ingot rising head and all excisions of steel ingot bottom, need to excise the steel ingot bottom and look the decision of the actual refining in steel ingot bottom quality;
C. jumping-up steel ingot, form adjective-centre structure at the bottom of the steel ingot simultaneously: steel ingot is positioned on the heading die, the circular-arc projection of steel ingot below just places in the centering groove of heading die, the application of force is carried out jumping-up to steel ingot above steel ingot again, its below circular-arc convexed to form adjective-centre structure at the bottom of the regular ingot when steel ingot was by jumping-up like this, and the jumping-up steel ingot can carry out open type or enclosed jumping-up to steel ingot in the mould of open type or enclosed;
D. press centre bore:,, make plane on the steel ingot form a centre bore with set depth and diameter by plane on the centre punch punching press steel ingot that has guider with adjective-centre structure location at the bottom of the steel ingot;
E. hot piercing: the steel ingot stationary positioned is placed into (adjective-centre structure down at the bottom of the steel ingot) in the prestressing force recipient, the centre bore on the plane extruding steel ingot downwards that aligns on the first pecker center and the steel ingot, with the centre bore of steel ingot upper surface deepen, enlarged diameter is to setting value;
F. the extruding steel ingot distributes: the steel ingot stationary positioned is placed into (adjective-centre structure down at the bottom of the steel ingot in the prestressing force recipient, with adjective-centre structure location at the bottom of the steel ingot), the extruding head of extrusion axis with the extruding force of ten thousand tons of 10-15 along the downward extrusion metal of steel ingot centre bore, radially mobile bottom and the while that forms housing of metal risen along the housing bus, form the straight drum part of housing, extrusion axis drives extruding head reset (backhaul) that move upward then, the extrusion axis band extruding head and is radially rotated set angle, extrusion axis is being with extruding head to repeat extrusion metal downwards along the steel ingot centre bore again, it is the extruding work step that distributes that the extrusion axis band set angle of the every rotation of extruding head, so perseveration becomes the extruded stock upper surface to be tending towards concordant until steel ingot, this process is that steel ingot is placed in the prestressing force recipient of sealing, extruding head by extrusion axis carries out the subregion to steel ingot, the extruding repeatedly that divides time domain, metal is flowed to make approximate radial away from the extruding head direction by extruding head extruding back, metal flow law of minimum resistance according to The former Russian scholar Gu Bujin proposition, the maximum position of metal distance between extruding head and steel ingot centre bore madial wall is flowed the fastest, like this when extruding head extruding steel ingot centre bore, the bus along housing turns to the top mobile in the gap of prestressing force recipient and extrusion axis thereby the metal that flows enters, make the straight tube of this place (being the very fast position of metal flow) steel ingot housing highly be higher than other position, because extruding head is to rotate extruding steel ingot centre bore in the same way continuously, and all rotate set angle behind each extruding work step that distributes, extruded stock that steel ingot becomes upper end just finally has been tending towards concordant state like this, it is more little that obvious extruding head radially rotates set angle, extruded stock that steel ingot becomes upper end difference in height is more little, several extruding work steps that distribute are formed a distribution extrusion process, and promptly a distribution extrusion process contains several extruding work steps that distributes: extruding work step number=360/ set angle distributes;
G. finishing: the finishing extrusion axis becomes the extruded stock surface of internal cavity monolithic extruded along the steel ingot center to steel ingot, steel ingot is become the leveling of extruded stock surface of internal cavity, the wall thickness extruding of steel ingot housing is even, the finishing extrusion axis of finishing procedure can be done suitable rotation after rising, remake compacting then, to eliminate the influence of finishing extrusion axis off-centre, improve the finishing precision;
H. f distribution extruding steel ingot operation and g finishing procedure hocket, till steel ingot becomes the concordant degree of extruded stock height, thickness and end face to reach setting value.
As a further improvement on the present invention, it is relevant with the steel ingot material that the extruding head of extrusion axis pushes the speed of steel ingot downwards when distributing the extruding steel ingot along the steel ingot centre bore, is specially:
Steel ingot is that ferrous metal (as high-temperature metal, contain Jin Gang etc.) the downward extrusion speed of extruding head is: 5mm/s-90mm/s;
Steel ingot is that the downward extrusion speed of non-ferrous metal (as aluminium, copper etc.) extruding head is: 20mm/s-300mm/s.
As a further improvement on the present invention, extruding head not the speed of the rising (backhaul) during contacting metal and descend (idle running is downward) be: 90mm/s-300mm/s.
As a further improvement on the present invention, when distributing the extruding steel ingot, the extrusion axis band extruding head radially the anglec of rotation be 10 degree-120 degree.
As a further improvement on the present invention, the drafts of distribution extruding steel ingot operation is between the 2-2000mm.
As a further improvement on the present invention, the pressing speed of finishing procedure, finishing extrusion axis not the speed of the rising (backhaul) during contacting metal and descend (idle running is downward) all the speed of the rising (backhaul) during contacting metal and decline (idle running is downward) is not identical with the pressing speed of the extruding steel ingot operation that distributes, extruding head, but 0.01 times to 0.5 times of the drafts that the drafts of finishing procedure is distribution pushes the steel ingot operation.
As a further improvement on the present invention, be provided with hot piercing reaming operation after the hot piercing operation: the centre bore that uses radial diameter steel ingot to be deepened along extruding steel ingot under the centre bore of steel ingot upper surface greater than second pecker of first pecker carries out reaming.
The distributed extrusion die of a kind of distributive extrusion process method of the present invention, comprise extrusion axis, extruding head and prestressing force recipient, to use direction to be benchmark, the extruding head upper end is fixedly arranged on the extrusion axis lower end, the cross-sectional area of extruding head is less than the cross-sectional area of extrusion axis, can effectively reduce extruding force like this and improve forming efficiency, the ratio of the cross-sectional area of extruding head and the cross-sectional area of extrusion axis promptly concerns with the extruding force formation function, extruding head cross section commonly used is a rectangular surfaces, make its long limit equal the diameter of extrusion axis, minor face is the ratio and the extruding force formation function relation of the width and the extrusion axis diameter of extruding head, the prestressing force recipient, extrusion axis and extruding head center conllinear, the prestressing force recipient is the tubbiness cylinder of upper end open inside diameter greater than extrusion axis and extruding head outside diameter, during use, the extrusion axis upper end detachably is fixedly arranged on the hold-down devices, prestressing force recipient lower end detachably is fixedly arranged on the forging press workbench, because extruding head, the extrusion axis band in the enclosed die cavity of prestressing force recipient, passes through huge three-dimensional compressive stress subregion, extrusion metal in batches, its formation housing bottom hemispherical portion and metal are risen along bus simultaneously form the straight drum part of housing, the housing of this extrusion modling is end socket and the cylindrical shell structure that is formed in one like this, again because its extrusion modling under the three-dimensional compressive stress effect is guaranteed the intensity of this housing.
As the further improvement of distributed extrusion die of the present invention, extrusion axis and extruding head are overall structure.
As the further improvement of distributed extrusion die of the present invention, the ratio of the cross-sectional area of extruding head and the cross-sectional area of extrusion axis is between 0.1～0.9.
As the further improvement of distributed extrusion die of the present invention, the inboard die cavity of prestressing force recipient is a kind of of circular cavity, rectangular cavity and oval chamber etc., and the extrusion axis cross section is a kind of of rectangle, polygon and ellipse etc.
As the further improvement of distributed extrusion die of the present invention, the extruding head cross section is a rectangular configuration, and its long limit equals the diameter of extrusion axis, and minor face is the width of extruding head, and the extruding head width is 0.05 to 0.95 with the ratio on long limit.
Useful technique effect of the present invention is: the present invention with the steel ingot fixed placement of high temperature heating in the prestressing force recipient of sealing, the extrusion axis band extruding head carries out subregion, branch time domain to steel ingot distribution extruding, make the radially mobile straight drum part that forms the bottom of housing and form housing along the rising of housing bus of metal, need not girth welding like this and just finish the one-shot forming of cylindrical shell and end socket, thereby technological process is short, link is few, and the cycle is short, the efficient height; Because extruding head is to carry out in the prestressing force recipient of sealing to the extruding of metal, thereby be basically at three-dimensional compressive stress state compacted under, tension in the forming process is dropped to minimum level, even there is not tension fully, thereby the wall thickness of housing is even, it is thorough that the closure of crackle and defective is repaired, the reliability of housing and intensity height;
The present invention can also be used for high pressure and super-pressure, high-reliabilities such as nuclear power evaporator, hydrogenation reactor, big volume natural gas high-pressure bottle, the shaping of the container of volume is made greatly.
Description of drawings
Fig. 1 shoulders the process schematic representation that technology is made pressure vessel for horse;
Fig. 2 is a schematic diagram of producing the pressure housing end socket with pressing process;
Fig. 3 is the schematic diagram with thick metal plate draw forming shell cover;
Fig. 4 is the nuclear pressure housing schematic diagram of prior art processing;
Fig. 5 processes steel ingot schematic diagram in first operation for the present invention;
Fig. 6 processes excision rising head schematic diagram in second operation for the present invention;
Fig. 7 processes jumping-up steel ingot schematic diagram in the 3rd operation for the present invention;
Fig. 8 presses the centre bore schematic diagram in the 4th operation for the present invention processes;
Fig. 9 processes hot piercing schematic diagram in the 5th operation for the present invention;
Figure 10 processes hot piercing reaming operation schematic diagram after the 5th operation for the present invention;
Figure 11 processes distribution extrusion process schematic diagram in the 6th operation for the present invention;
Figure 12 is the present invention's extrusion axis front view in the extrusion process that distributes;
Figure 13 is the present invention's extrusion axis left view in the extrusion process that distributes;
Figure 14 processes distribution extrusion process cutaway view in the 6th operation for the present invention;
Figure 15 processes finishing procedure schematic diagram in the 7th operation for the present invention.
The specific embodiment
Embodiment: a kind of distributive extrusion process method, its step is as follows:
A. the refining steel ingot 1: high temperature is heated to 1050 and spends between 1250 degree;
B. excise steel ingot rising head 2: whether various flame cutting methods such as available oxygen-acetylene in view of present steel-making level needs sometimes with steel ingot rising head and all excisions of steel ingot bottom, need to excise the steel ingot bottom and look the decision of the actual refining in steel ingot bottom quality;
C. jumping-up steel ingot, form adjective-centre structure 3 at the bottom of the steel ingot simultaneously: steel ingot is positioned on the heading die 4, circular-arc protruding 11 of steel ingot below just places in the centering groove 41 of heading die, the application of force is carried out jumping-up to steel ingot above steel ingot again, circular-arc protruding 11 of its below had formed adjective-centre structure 3 at the bottom of the regular steel ingot when steel ingot was by jumping-up like this, and the jumping-up steel ingot can carry out open type or enclosed jumping-up to steel ingot in the mould of open type or enclosed;
D. press centre bore:,, make plane on the steel ingot form a centre bore with set depth and diameter by plane on the centre punch 5 punching press steel ingots that have guider with adjective-centre structure at the bottom of the steel ingot 3 location;
E. hot piercing: the steel ingot stationary positioned is placed in the prestressing force recipient 6 (adjective-centre structure down at the bottom of the steel ingot), the centre bore on the plane extruding steel ingot downwards that aligns on first pecker, 7 centers and the steel ingot, with the centre bore degree of depth of steel ingot upper surface deepen, enlarged diameter is to setting value;
F. the extruding steel ingot distributes: the steel ingot stationary positioned is placed into (adjective-centre structure down at the bottom of the steel ingot in the prestressing force recipient 6, with adjective-centre structure location at the bottom of the steel ingot), the extruding head 93 of extrusion axis 92 with the extruding force P of ten thousand tons of 10-15 along the downward extrusion metal of steel ingot centre bore, make metal radially flow form the bottom of housing and rise along the housing bus simultaneously and form the straight drum part of housing, extrusion axis drives extruding head reset (backhaul) that move upward then, extrusion axis 92 is being with extruding head 93 radially to rotate set angle α, extrusion axis 92 is being with extruding head 93 to repeat extrusion metal downwards along steel ingot 1 centre bore again, it is the extruding work step that distributes that extrusion axis 92 is being with set angle α of extruding head 93 every rotations, so perseveration until steel ingot 1 become the extruded stock upper surface to be tending towards concordant, this process be with steel ingot 1 be placed on sealing in prestressing force recipient 6,93 pairs of steel ingots of extruding head 1 by extrusion axis 92 carry out the subregion, the extruding repeatedly that divides time domain, metal is flowed to make approximate radial away from extruding head 93 directions by extruding head 93 extruding backs, metal flow law of minimum resistance according to The former Russian scholar Gu Bujin proposition, the maximum position of metal distance between extruding head 93 and steel ingot 1 centre bore madial wall is flowed the fastest, like this when extruding head 93 extruding steel ingots 1 centre bore, the bus along housing turns to the top to flow in the gap of prestressing force recipient 6 and extrusion axis 92 thereby the metal that flows enters, make the straight tube of this place (being the very fast position of metal flow) steel ingot housing highly be higher than other position, because extruding head 93 is to rotate extruding steel ingot centre bore in the same way continuously, and extruding head all rotates set angle α behind each extruding steel ingot work step that distributes, just finally be tending towards concordant state on the extruded stock that steel ingot 1 becomes like this, it is more little that obvious extruding head 93 radially rotates set angle α, extruded stock that steel ingot becomes upper end difference in height is more little, several extruding work steps that distribute are formed a distribution extrusion process, and promptly a distribution extrusion process contains several extruding work steps that distributes: extruding work step number=360/ set angle α distributes;
G. finishing: finishing extrusion axis 10 becomes the extruded stock surface of internal cavity monolithic extruded along the steel ingot center to steel ingot, steel ingot is become the leveling of extruded stock surface of internal cavity, the wall thickness extruding of steel ingot housing is even, the finishing extrusion axis 10 of finishing procedure can be done suitable rotation after rising, remake compacting then, to eliminate the influence of finishing extrusion axis 10 off-centre, improve the finishing precision;
H. f distribution extruding steel ingot operation and g finishing procedure hocket, till steel ingot becomes the concordant degree of extruded stock height, thickness and end face to reach setting value.
It is relevant with the steel ingot material that the extruding head 93 of extrusion axis 92 pushes the speed of steel ingot downwards during described distribution extruding steel ingot along the steel ingot centre bore, is specially:
Steel ingot is that ferrous metal (as high-temperature metal, contain Jin Gang etc.) extruding head 93 downward extrusion speeds are 5mm/s-90mm/s;
Steel ingot is that non-ferrous metal (as aluminium, copper etc.) extruding head 93 downward extrusion speeds are 20mm/s-300mm/s.
The described extruding head 93 not speed of the rising (backhaul) during contacting metal and descend (idle running is downward) is: 90mm/s-300mm/s.
When steel ingot was extruded in described distribution, it was 10 degree-120 degree that extrusion axis 92 is being with extruding head 93 radially to rotate set angle α.
The drafts of described distribution extruding steel ingot operation is between the 2-2000mm.
The pressing speed of described finishing procedure, finishing extrusion axis not the speed of the rising (backhaul) during contacting metal and descend (idle running is downward) all the speed of the rising (backhaul) during contacting metal and decline (idle running is downward) is not identical with the pressing speed of the extruding steel ingot operation that distributes, extruding head, but 0.01 times to 0.5 times of the drafts that the drafts of finishing procedure is distribution extrudes operation.
Be provided with hot piercing reaming operation after the described hot piercing operation: the centre bore that uses radial diameter steel ingot to be deepened along extruding steel ingot under the centre bore of steel ingot upper surface greater than second pecker 8 of first pecker 7 carries out reaming.
The distributed extrusion die of described a kind of distributive extrusion process method, comprise extrusion axis 92, extruding head 93 and prestressing force recipient 6, to use direction to be benchmark, extruding head 93 upper ends are fixedly arranged on extrusion axis 92 lower ends, the cross-sectional area A 1 of extruding head is less than the cross-sectional area A 2 of extrusion axis, can effectively reduce extruding force P like this and improve forming efficiency, the cross-sectional area A 1 of extruding head and the ratio A1/A2 of the cross-sectional area A 2 of extrusion axis and extruding force P formation function relation, extruding head 93 cross sections commonly used are a rectangular surfaces, make its long limit equal the diameter D1 of extrusion axis, minor face is the width B of extruding head and ratio B/D1 and the extruding force P formation function relation of extrusion axis diameter D1, prestressing force recipient 6, extrusion axis 92 and extruding head 93 center conllinear, prestressing force recipient 6 is the tubbiness cylinder of upper end open inside diameter greater than extrusion axis 92 and extruding head 93 outside diameter, extrusion axis 92 upper ends detachably are fixedly arranged on the hold-down devices of forging press during use, prestressing force recipient 6 lower ends detachably are fixedly arranged on the forging press workbench, because extrusion axis 92 passes through huge three-dimensional compressive stress with extruding head 93 in the enclosed die cavity of prestressing force recipient 6, the subregion, extrusion metal in batches, its formation housing bottom hemispherical portion and metal are risen along bus simultaneously form the straight drum part of housing, the housing of this extrusion modling is end socket and the cylindrical shell structure that is formed in one like this, again because its extrusion modling under the three-dimensional compressive stress effect is guaranteed the intensity of this housing.
The extrusion axis 92 and the extruding head 93 of described distributed extrusion die are overall structure.
The ratio A1/A2 of the cross-sectional area A 1 of the extruding head of described distributed extrusion die and the cross-sectional area A 2 of extrusion axis is between 0.1～0.9.
The prestressing force recipient 6 inboard die cavities of described distributed extrusion die are a kind of of circular cavity, rectangular cavity and oval chamber etc., and extrusion axis 92 cross sections are a kind of of rectangle, polygon and ellipse etc.
Extruding head 93 cross sections of described distributed extrusion die are rectangular configuration, and its long limit equals the diameter D1 of extrusion axis, and minor face is the width B of extruding head, and the extruding head width is 0.05-0.95 with long limit ratio B/D1.
Claims (12)
1. distributive extrusion process method, it is characterized by: its step is as follows:
A. refining steel ingot (1): high temperature is heated to 1050 and spends between 1250 degree;
B. excise steel ingot rising head (2);
C. jumping-up steel ingot, form adjective-centre structure (3) at the bottom of the steel ingot simultaneously: steel ingot is positioned on the heading die (4), and the circular-arc projection (11) of steel ingot below just places in the centering groove (41) of heading die, and the application of force is carried out jumping-up to steel ingot above steel ingot again;
D. press centre bore:,, make plane on the steel ingot form a centre bore with set depth and diameter by plane on centre punch (5) the extruding steel ingot that has guider with adjective-centre structure at the bottom of the steel ingot (3) location;
E. hot piercing: the steel ingot stationary positioned is placed in the prestressing force recipient (6), and the centre bore on plane aligns and pushes steel ingot downwards on first pecker (7) center and the steel ingot, with the centre bore degree of depth of steel ingot upper surface deepen, enlarged diameter is to setting value;
F. the extruding steel ingot distributes: the steel ingot stationary positioned is placed in the prestressing force recipient (6), the extruding head (93) of extrusion axis (92) with the extruding force (P) of ten thousand tons of 10-15 along the downward extrusion metal of steel ingot centre bore, extrusion axis (92) drive extruding head (93) moves upward and resets then, extrusion axis (92) is being with extruding head (93) radially to rotate set angle (α), extrusion axis (92) is being with extruding head (93) to repeat extrusion metal downwards along the steel ingot centre bore again, it is the extruding work step that distributes that extrusion axis (92) is being with extruding head (a 93) set angle of every rotation (α), so perseveration becomes the extruded stock upper surface to be tending towards concordant until steel ingot, and extrusion axis (92) is being with extruding head (93) to rotate a circle and is being formed the extruding steel ingot operation that distributes;
G. finishing: finishing extrusion axis (10) becomes the extruded stock surface of internal cavity monolithic extruded along the steel ingot center to steel ingot, and steel ingot is become the leveling of extruded stock surface of internal cavity, and the wall thickness extruding of steel ingot housing is even;
H. f distribution extruding steel ingot operation and g finishing procedure hocket, till steel ingot becomes the concordant degree of extruded stock height, thickness and end face to reach setting value.
2. a kind of distributive extrusion process method as claimed in claim 1 is characterized in that: it is relevant with the steel ingot material that the extruding head of extrusion axis pushes the speed of steel ingot downwards when distributing the extruding steel ingot along the steel ingot centre bore, is specially:
Steel ingot is that the downward extrusion speed of ferrous metal extruding head is: 5mm/s-90mm/s;
Steel ingot is that the downward extrusion speed of non-ferrous metal extruding head is: 20mm/s-300mm/s.
3. a kind of distributive extrusion process method as claimed in claim 1 is characterized in that: the extruding head not rising during contacting metal and the speed of decline is: 90mm/s-300mm/s.
4. a kind of distributive extrusion process method as claimed in claim 1 is characterized in that: when distributing the extruding steel ingot, the extrusion axis band extruding head, and radially to rotate set angle (α) be 10 degree-120 degree.
5. a kind of distributive extrusion process method as claimed in claim 1 is characterized in that: the drafts of the extruding steel ingot operation that distributes is between the 2mm-2000mm.
6. as claim 1 or 5 described a kind of distributive extrusion process methods, it is characterized in that: the speed of finishing extrusion axis (10) pressing speed of finishing procedure, the not rising during contacting metal and decline is not all with the extruding steel ingot operation extruding head pressing speed that distributes, the speed of the rising during contacting metal and decline is not identical, but the drafts of finishing procedure is 0.01 times-0.5 times of drafts of extruding steel ingot operation of distributing.
7. a kind of distributive extrusion process method as claimed in claim 1 is characterized in that: be provided with hot piercing reaming operation after the hot piercing operation: the centre bore that uses radial diameter steel ingot to be deepened along extruding steel ingot under the centre bore of steel ingot upper surface greater than second pecker (8) of first pecker (7) carries out reaming.
8. distributed extrusion die of realizing the described a kind of distributive extrusion process method of claim 1, it is characterized in that: comprise extrusion axis (92), extruding head (93) and prestressing force recipient (6), to use direction to be benchmark, extruding head (93) upper end is fixedly arranged on extrusion axis (92) lower end, the cross-sectional area of extruding head (A1) is less than the cross-sectional area (A2) of extrusion axis, prestressing force recipient (6), extrusion axis (92) and extruding head (93) center conllinear, prestressing force recipient (6) are the tubbiness cylinder of upper end open inside diameter greater than extrusion axis (92) and extruding head (93) outside diameter.
9. distributed extrusion die according to claim 8 is characterized in that: extrusion axis and extruding head are overall structure.
10. distributed extrusion die according to claim 8 is characterized in that: the ratio of the cross-sectional area of extruding head and the cross-sectional area of extrusion axis is between 0.1～0.9.
11. distributed extrusion die according to claim 8 is characterized in that: the inboard die cavity of prestressing force recipient is a kind of of circular cavity, rectangular cavity and oval chamber etc., and the extrusion axis cross section is a kind of in rectangle, polygon and the ellipse etc.
12. distributed extrusion die according to claim 8 is characterized in that: the extruding head cross section is a rectangular configuration, and its long limit equals the diameter (D1) of extrusion axis, and minor face is the width (B) of extruding head, and the extruding head width is 0.05 to 0.95 with the ratio on long limit.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910032470 CN101912889B (en) | 2009-06-17 | 2009-06-17 | Distributive extrusion process method and distributive extrusion mold thereof |
| RU2012101226/02A RU2493929C1 (en) | 2009-06-17 | 2010-06-17 | Device and method of forming by zone extrusion |
| PCT/CN2010/074026 WO2010145551A1 (en) | 2009-06-17 | 2010-06-17 | Distribution extruding forming device and distribution extruding forming method |
| EP10788947A EP2444170A1 (en) | 2009-06-17 | 2010-06-17 | Distribution extruding forming device and distribution extruding forming method |
| US13/378,873 US20120090375A1 (en) | 2009-06-17 | 2010-06-17 | Zoning closed-die extruding device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910032470 CN101912889B (en) | 2009-06-17 | 2009-06-17 | Distributive extrusion process method and distributive extrusion mold thereof |
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| Publication Number | Publication Date |
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| CN101912889A true CN101912889A (en) | 2010-12-15 |
| CN101912889B CN101912889B (en) | 2013-07-31 |
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| CN 200910032470 Withdrawn - After Issue CN101912889B (en) | 2009-06-17 | 2009-06-17 | Distributive extrusion process method and distributive extrusion mold thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672171A (en) * | 2011-03-18 | 2012-09-19 | 硕恩科技股份有限公司 | Powder die-casting method and die used therefor |
| CN102699084A (en) * | 2012-06-01 | 2012-10-03 | 北京理工大学 | Cup-shaped piece prepared through reversed and torsion extrusion |
| WO2013044599A1 (en) * | 2011-09-30 | 2013-04-04 | 南京理工大学 | Method for achieving high-pressure shearing deformation in tube materials by wedge principle and apparatus therefor |
| CN108087440A (en) * | 2017-12-01 | 2018-05-29 | 上海纳铁福传动***有限公司 | The warm forging blank of three pin shaft fork fine forge piece cold-finishing |
| CN110248746A (en) * | 2017-02-13 | 2019-09-17 | 纽曼铝业有限公司 | It is a kind of for constituting the method and molded part of molded part |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074692C (en) * | 1996-12-06 | 2001-11-14 | 怀曼·戈登有限公司 | Closed forging technology and rotary step type forging press |
| CN1166469C (en) * | 2000-11-27 | 2004-09-15 | 中国第二重型机械集团公司 | Technoloyg for manufacturing thick-wall closure head with integral bearing apnn stand |
| CN1329136C (en) * | 2004-11-07 | 2007-08-01 | 洛阳轴承集团有限公司 | Method for processing roller drift punch mould cavity by utilizing cold extrusion technique |
| CN101912893A (en) * | 2009-06-17 | 2010-12-15 | 苏州昆仑先进制造技术装备有限公司 | Distributed extrusion die |
| CN201511050U (en) * | 2009-06-17 | 2010-06-23 | 苏州昆仑先进制造技术装备有限公司 | Distribution extrusion die |
-
2009
- 2009-06-17 CN CN 200910032470 patent/CN101912889B/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672171A (en) * | 2011-03-18 | 2012-09-19 | 硕恩科技股份有限公司 | Powder die-casting method and die used therefor |
| WO2013044599A1 (en) * | 2011-09-30 | 2013-04-04 | 南京理工大学 | Method for achieving high-pressure shearing deformation in tube materials by wedge principle and apparatus therefor |
| CN102699084A (en) * | 2012-06-01 | 2012-10-03 | 北京理工大学 | Cup-shaped piece prepared through reversed and torsion extrusion |
| CN110248746A (en) * | 2017-02-13 | 2019-09-17 | 纽曼铝业有限公司 | It is a kind of for constituting the method and molded part of molded part |
| CN108087440A (en) * | 2017-12-01 | 2018-05-29 | 上海纳铁福传动***有限公司 | The warm forging blank of three pin shaft fork fine forge piece cold-finishing |
| CN108087440B (en) * | 2017-12-01 | 2019-05-28 | 上海纳铁福传动***有限公司 | The warm forging blank of three pin shaft fork fine forge piece cold-finishing |
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| CN101912889B (en) | 2013-07-31 |
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