CN106311783A - Forming device of ultrahigh-pressure static liquid extrusion magnesium alloy pipe and forming process thereof - Google Patents
Forming device of ultrahigh-pressure static liquid extrusion magnesium alloy pipe and forming process thereof Download PDFInfo
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- CN106311783A CN106311783A CN201510337557.9A CN201510337557A CN106311783A CN 106311783 A CN106311783 A CN 106311783A CN 201510337557 A CN201510337557 A CN 201510337557A CN 106311783 A CN106311783 A CN 106311783A
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Abstract
The invention discloses a forming device of an ultrahigh-pressure static liquid extrusion magnesium alloy pipe and a forming process thereof. The forming device totally adopts a horizontal structure, and comprises a supercharging cylinder, an extruding cylinder, a first pressing medium exchange disc, a second pressing medium exchange disc, a third pressing medium exchange disc, an extruding mold, a first heating sleeve, a second heating sleeve and a high-pressure hydraulic pump with an extruding shaft. The supercharging cylinder, the extruding cylinder, the pressing medium exchange discs, the mold and the high-pressure hydraulic pump are all fixed between a movable beam and a fixed beam; and the movable beam and the fixed beam are connected through a tension column. The supercharging cylinder and the extruding cylinder are arranged in parallel, and are positioned in the same one horizontal plane. The extruding shaft is positioned in the supercharging cylinder; a blank is positioned in the extruding cylinder; the travel of the extruding cylinder and the size of the blank both can be increased; the magnesium alloy pipe with a longer length can be obtained by static liquid extrusion machining through the forming process on the forming device; and the production efficiency can be improved.
Description
Technical field
The invention belongs to technical field of metal formation, be specifically related to shaped device and the moulding process thereof of a kind of supertension hydrostatic extrusion magnesium alloy pipe.
Background technology
Magnesium alloy has high specific stiffness, specific strength, the advantage such as thermal diffusivity is good, machining property is excellent, effectiveness is good, recovery is easy, gradually shows up prominently in fields such as national defence, automobile, electronicss, and future development has a high potential.Magnesium alloy pipe is one of widest application form of magnesium alloy, and the magnesium alloy pipe that exploitation has more preferable mechanical property is significant.
The method of common processing magnesium alloy part is cutting, but machining expends raw material, and stock utilization is low；Some complex-shaped parts can use the mode of die casting to manufacture, but casting flaw in various degree easily occurs in foundry goods, and due to the restriction of casting technique, cast properties is often difficult to meet use requirement；The new technologies such as multi-pass Equal Channel Angular Pressing (ECAE), semi-solid forming can increase substantially the mechanical property of magnesium alloy parts, but it exists the deficiencies such as technology controlling and process difficulty, equipment investment is huge, production efficiency is low.
Magnesium alloy room temperature plasticity is very poor, and hydrostatic extrusion forming technique is remarkably improved the plasticity of magnesium alloy, makes magnesium alloy reach superplasticity, is the preferable mode of processing low-plasticity material.Using hydrostatic extrusion forming technique to produce magnesium alloy pipe, be possible not only to reduce raw-material consumption, and the tubing dense structure property obtained is more preferable, grain structure is more tiny, and mechanical property is more superior.At present hydrostatic extrusion moulding process it has been reported that but be mainly used in wire rod and bar, hydrostatic extrusion molding (the especially expanding and shaping of the tubing) device of the tubing of corresponding with technique easy to operate, process control, the most do not see.
Chinese Patent Application No. is the patent of invention of CN201310108301.1, discloses the mould of a kind of band core rod, can carry out the expanding extruding of magnesium alloy pipe and shrink extruding.But extrusion billet and extrusion axis are respectively positioned in recipient, the stroke of extrusion axis and charge length can be by definite limitations, and the length of plastic magnesium alloy pipe is shorter.
Summary of the invention
It is an object of the invention to provide shaped device and the moulding process thereof of a kind of supertension hydrostatic extrusion magnesium alloy pipe, solve magnesium alloy materials and be difficult to plastic forming and the shorter problem of hydrostatic extrusion molding magnesium alloy pipe length.
The technical solution realizing the object of the invention is: the shaped device of a kind of supertension hydrostatic extrusion magnesium alloy pipe, it is characterized in that: overall employing horizontal type structure, including pressurization cylinder, recipient, first pressure matchmaker's swapdisk, second pressure matchmaker's swapdisk, the 3rd pressure matchmaker's swapdisk, extrusion die, the first heating mantle, the second heating mantle and the high-pressure hydraulic pump with extrusion axis.
Described pressurization cylinder one end is connected with first pressure matchmaker's swapdisk, and the other end and second pressure matchmaker's swapdisk connect, and second pressure matchmaker's swapdisk center is provided with through hole, and extrusion axis stretches into pressurization cylinder through the central through hole of second pressure matchmaker's swapdisk；Pressurization cylinder be arranged in parallel with recipient, and is positioned in same level；Described recipient one end is connected with extrusion die, the other end and the 3rd pressure matchmaker's swapdisk connect, first pressure matchmaker's swapdisk is provided with a L-shaped through hole, the inner chamber making pressurization cylinder is in communication with the outside, 3rd pressure matchmaker's swapdisk is provided with a L-shaped through hole, the inner chamber making recipient is in communication with the outside, and is provided with steel pipe between the extraneous communications ports of two L-shaped through holes, and steel pipe two ends are connected by the extraneous communications ports of hydraulic fitting and two L-shaped through holes respectively；First heating mantle is arranged on the outer wall of extrusion die, covers recipient and is connected the end face of end with extrusion die；Second heating mantle is arranged on the outer wall of recipient, covers the end face connecting end of extrusion die and recipient.
Also including hollow steel bushing, hollow steel is set on pressurization cylinder inner chamber；The structure of recipient, size are identical with pressurization cylinder.
The extraneous communications ports of the L-shaped through hole on described first pressure matchmaker's swapdisk is relative with the extraneous communications ports opening of the L-shaped through hole on the 3rd pressure matchmaker's swapdisk so that joint steel pipe distance is the shortest.
Also include the first sealing system, the second sealing system, the 3rd sealing system and the 4th sealing system, pressurization cylinder and first pressure matchmaker's swapdisk junction are provided with the first sealing system, pressurization cylinder and second pressure matchmaker's swapdisk junction are provided with the second sealing system, recipient and the 3rd pressure matchmaker's swapdisk junction are provided with the 3rd sealing system, extrusion die and recipient junction are provided with the 4th sealing system, described sealing system is O RunddichtringO and metal triangular pad, by described sealing system, it is achieved static seal.
The extrusion axis junction stating second pressure matchmaker's swapdisk and hydraulic system is provided with sealing ring, it is achieved movable sealing.
Second pressure matchmaker's swapdisk is provided with a L-shaped through hole so that the inner chamber of pressurization cylinder is in communication with the outside, and the extraneous communications ports of described L-shaped through hole is connected with hydraulic tube by hydraulic fitting.
Described extrusion die includes upper mold, core rod, lower mold and core base；Recipient is stretched in described upper mold one end, is connected with recipient, and the other end is connected with one end of lower mold, and upper die and lower die constitute hollow cylinder；Core base one end is provided with boss, and described boss stretches into the other end of lower mold, and with its interference fits.The boss of core base is provided with groove, and core rod is arranged in above-mentioned hollow cylinder, and in the groove of the boss being fixed on described core base bottom core rod, head stretches into upper mold.Ensure that core rod and core base are coaxial.
Described first heating mantle, the second heating mantle all use armored ceramic resistor silk heating mantle, use K-type thermocouple to carry out temperature survey, and the first heating mantle, the second heating mantle are respectively adopted different heating-up temperatures.
Also including frame, frame includes first fixing beam, second fixing beam, the 3rd fix beam, walking beam and tension force post, and parallel interval arranges and first fixes beam, second fixes beam, the 3rd fixes beam and walking beam successively.First to fix beam parallel with walking beam, first pressure matchmaker's swapdisk and the 3rd pressure matchmaker's swapdisk are separately fixed at first and fix on beam, second pressure matchmaker's swapdisk is fixed on second and fixes on beam, high-pressure hydraulic pump one end is fixed on second and fixes on beam, the other end is fixed on the 3rd and fixes on beam, and the core base of extrusion die is fixed on walking beam.First fixing beam, second fix and connected by tension force post between beam, second fix beam, the 3rd fix and connected by tension force post between beam, first is fixed and is connected by tension force post between beam and walking beam.
The moulding process of a kind of supertension hydrostatic extrusion magnesium alloy pipe, step is as follows: 1. magnesium alloy blank is carried out homogenization heat treatment, according to required size of pipe and tubing, is processed magnesium alloy blank one end, and coats grease or lubricating oil on blank end face；2. when expanding extruding pipe fitting, core rod loading core base, core base loads lower mold, and upper mold loads lower mold, and ensures the axiality that core base, core rod, lower mold and upper mold are certain；3. utilize hydraulic extrusion press by step 1. described in the machined one end of magnesium alloy blank get in upper mold, make to produce certain pretightning force between the two；4. 3rd sealing system is installed at upper mold, the magnesium alloy blank other end is put in recipient；At upper die and lower die, load onto the first heating mantle the most respectively and the second heating mantle loaded onto by recipient；6. using the low pressure of hydraulic system, i.e. less than 70 MPa, oil pump, by extrusion medium, fills pressurization cylinder and recipient；7. check sealing, supercharging cylinder pressure 20MPa, 30Min, pressure stability need to be kept, fluctuate less；8. the first heating mantle electrified regulation at upper die and lower die is to design temperature 220 DEG C, is incubated 2h；The second heating mantle electrified regulation on recipient, to design temperature 200 DEG C, is incubated 2h；9. promoting extrusion axis compression extrusion medium to produce the supertension of more than 400MPa by the high-pressure hydraulic pump of hydraulic system, magnesium alloy blank is expanded extrusion, tube forming under hydrostatic pressure；10., after extruding terminates, unload hydraulic system, cylinder to be extruded and extrusion die cooling, dismantle extrusion die, it is thus achieved that magnesium alloy pipe.
Compared with prior art, its remarkable advantage is the present invention: (1) can realize the supertension hydrostatic extrusion molding of magnesium alloy pipe；(2) expanding and shaping of magnesium alloy pipe can be realized；(3) the contraction molding of magnesium alloy pipe can be realized；(4) length of plastic magnesium alloy pipe is longer；(5) the magnesium alloy pipe excellent in mechanical performance, the dimensional accuracy that manufacture are high, surface quality is good；(6) easy to operate, production process is controlled, and danger coefficient is low, and productive temp is guaranteed, and precision is high, and reliability is high.
Accompanying drawing explanation
Fig. 1 is the shaped device overall structure schematic diagram of the supertension hydrostatic extrusion magnesium alloy pipe of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail.
In conjunction with Fig. 1, a kind of shaped device of supertension hydrostatic extrusion magnesium alloy pipe, overall employing horizontal type structure, presses matchmaker's swapdisk 2, second to press matchmaker's swapdisk the 7, the 3rd to press matchmaker's swapdisk 21, extrusion die, the first heating mantle the 14, second heating mantle 18 and high-pressure hydraulic pump 10 with extrusion axis 9 including pressurization cylinder 5, recipient 22, first.
Described pressurization cylinder 5 one end is connected with first pressure matchmaker's swapdisk 2, and the other end and second pressure matchmaker's swapdisk 7 connect, and second pressure matchmaker's swapdisk 7 center is provided with through hole, and extrusion axis 9 stretches into pressurization cylinder 5 through the central through hole of second pressure matchmaker's swapdisk 7.Pressurization cylinder 5 inner chamber is provided with hollow steel bushing 4, beneficially extrusion medium 19 and is full of pressurization cylinder 5 and the inner chamber of recipient 22 quickly.Pressurization cylinder 5 be arranged in parallel with recipient 22, and is positioned in same level.Described recipient 22 one end is connected with extrusion die, the other end and the 3rd pressure matchmaker's swapdisk 21 connect, first pressure matchmaker's swapdisk 2 is provided with a L-shaped through hole, the inner chamber making pressurization cylinder 5 is in communication with the outside, 3rd pressure matchmaker's swapdisk 21 is provided with a L-shaped through hole, the inner chamber making recipient 22 is in communication with the outside, and is provided with steel pipe 24 between the extraneous communications ports of two L-shaped through holes, and steel pipe 24 two ends are connected by the extraneous communications ports of hydraulic fitting 23 and two L-shaped through holes respectively.First heating mantle 14 is arranged on the outer wall of extrusion die, and its original position is recipient 22 end face, and described end face is the end face that recipient 22 is connected end with extrusion die；Second heating mantle 18 is arranged on the outer wall of recipient 22, and the end face connecting end that its original position is extrusion die and recipient 22.
The extraneous communications ports of the L-shaped through hole on described first pressure matchmaker's swapdisk 2 is relative with the extraneous communications ports opening of the L-shaped through hole on the 3rd pressure matchmaker's swapdisk 21 so that joint steel pipe 24 is apart from the shortest.
The structure of recipient 22, size are completely the same with pressurization cylinder 5, and both have interchangeability.
Pressurization cylinder 5 and first pressure matchmaker's swapdisk 2 junction are provided with the first sealing system 3, pressurization cylinder 5 and second pressure matchmaker's swapdisk 7 junction are provided with the second sealing system 6, recipient 22 and the 3rd pressure matchmaker's swapdisk 21 junction are provided with the 3rd sealing system 16, extrusion die and recipient 22 junction are provided with the 4th sealing system 20, described sealing system is O RunddichtringO and metal triangular pad, by described sealing system, it is achieved static seal.Second pressure matchmaker's swapdisk 7 is provided with sealing ring with extrusion axis 9 junction of hydraulic system, it is achieved movable sealing.
Second pressure matchmaker's swapdisk 7 is provided with a L-shaped through hole so that the inner chamber of pressurization cylinder 5 is in communication with the outside, and the extraneous communications ports of described L-shaped through hole is connected with hydraulic tube 8 by hydraulic fitting 23.
Described extrusion die includes upper mold 15, core rod 13, lower mold 12 and core base 11；Recipient 22 is stretched in described upper mold 15 one end, is connected with recipient 22, and the other end is connected with one end of lower mold 12, and upper mold 15 and lower mold 12 constitute hollow cylinder；Core base 11 one end is provided with boss, and described boss stretches into the other end of lower mold 12, and with its interference fits.The boss of core base 11 is provided with groove, and core rod 13 is arranged in above-mentioned hollow cylinder, and in the groove of the boss being fixed on described core base 11 bottom core rod 13, head stretches into upper mold 15.Ensure that core rod 13 and core base 11 are coaxial.
First heating mantle 14 and the second heating mantle 18 all use armored ceramic resistor silk heating mantle, use K-type thermocouple to carry out temperature survey, and the first heating mantle 14 and the second heating mantle 18 are respectively adopted different heating-up temperatures.
Also including that frame 1, frame 1 include first fixing beam 1-1, second fixing beam 1-2, the 3rd fix beam 1-3, walking beam 1-4 and tension force post 1-5, parallel interval arranges and first fixes beam 1-1, second fixes beam 1-2, the 3rd fixes beam 1-3 and walking beam 1-4 successively.First to fix beam 1-1 parallel with walking beam 1-4, first pressure matchmaker's swapdisk 2 and the 3rd pressure matchmaker's swapdisk 21 are separately fixed at first and fix on beam 1-1, second pressure matchmaker's swapdisk 7 is fixed on second and fixes on beam 1-2, high-pressure hydraulic pump 10 one end is fixed on second and fixes on beam 1-2, the other end is fixed on the 3rd and fixes on beam 1-3, and the core base 11 of extrusion die is fixed on walking beam 1-4.First fix beam 1-1, second fix between beam 1-2 by tension force post 1-5 connect, second fix beam 1-2, the 3rd fix between beam 1-3 by tension force post 1-5 connect, first fix between beam 1-1 and walking beam 1-4 by tension force post 1-5 connect.
With reference to Fig. 1, the shaped device of a kind of supertension hydrostatic extrusion magnesium alloy pipe and moulding process thereof, use step includes: 1. magnesium alloy blank 17 is carried out homogenization heat treatment, according to required size of pipe and tubing, magnesium alloy blank 17 one end is processed, and on blank end face, coats grease or lubricating oil；2. when expanding extruding pipe fitting, core rod 13 loading core base 11, core base 11 loads lower mold 12, and upper mold 15 loads lower mold 12, and ensures the axiality that core base 11, core rod 13, lower mold 12 and upper mold 15 are certain；3. utilize hydraulic extrusion press by step 1. described in the machined one end of magnesium alloy blank 17 get in upper mold 15, make to produce certain pretightning force between the two；4. 3rd sealing system 16 is installed at upper mold 15, magnesium alloy blank 17 other end is put in recipient 22；At upper mold 15, lower mold 12, load onto the first heating mantle 14 the most respectively and the second heating mantle 18 loaded onto by recipient 22；6. use low pressure (less than the 70 MPa) oil pump of hydraulic system by extrusion medium 19, fill pressurization cylinder 5 and recipient 22；7. check sealing, pressure 20MPa in pressurization cylinder 5,30Min, pressure stability need to be kept, fluctuate less；8. the first heating mantle 14 electrified regulation at upper mold 15, lower mold 12 is to design temperature 220 DEG C, is incubated 2h；The second heating mantle 18 electrified regulation on recipient 22, to design temperature 200 DEG C, is incubated 2h；9. promoting extrusion axis 9 to compress extrusion medium 19 by the high-pressure hydraulic pump 10 of hydraulic system and produce the supertension of more than 400MPa, magnesium alloy blank 17 is expanded extrusion, tube forming under hydrostatic pressure；10., after extruding terminates, unload hydraulic system, cylinder 22 to be extruded and extrusion die cooling, dismantle extrusion die, it is thus achieved that magnesium alloy pipe.
Shrinking extruded if desired for magnesium alloy pipe, changing extrusion die is to shrink extrusion die, and repeat the above steps, magnesium alloy blank is retracted extrusion, tube forming.
Work process
First heating mantle 14 and the second heating mantle 18 are heated separately to preset temperature, and are incubated the regular hour.High-pressure hydraulic pump 10 is utilized to promote extrusion axis 9, extrusion axis 9 to compress extrusion medium 19 so that in pressurization cylinder 5, the extrusion medium 19 of intracavity gradually builds up high pressure.Pressurization cylinder 5 connects with the extrusion medium 19 in recipient 22, and now the pressure in recipient 22 is gradually increased.It is positioned at the magnesium alloy blank 17 of recipient 22 inner chamber under the effect of hydrostatic pressure, is extruded to the core rod 13 of extrusion die and in passage (i.e. calibrating strap) that upper mold 15 is formed, magnesium alloy pipe molding, enter in the lower mold 12 of extrusion die.Owing to the extrusion axis 9 of this device is positioned at pressurization cylinder 5, and blank is positioned in recipient 22, and the stroke of recipient and the size of blank all can increase, such that it is able to obtain the magnesium alloy pipe that length is longer.
Embodiment 1
A kind of shaped device of supertension hydrostatic extrusion magnesium alloy pipe, overall employing horizontal type structure, presses matchmaker's swapdisk 2, second to press matchmaker's swapdisk the 7, the 3rd to press matchmaker's swapdisk 21, extrusion die, the first heating mantle the 14, second heating mantle 18 and high-pressure hydraulic pump 10 with extrusion axis 9 including frame 1, pressurization cylinder 5, recipient 22, first.
Frame 1 includes first fixing beam 1-1, second fixing beam 1-2, the 3rd fix beam 1-3, walking beam 1-4 and tension force post 1-5, and parallel interval arranges and first fixes beam 1-1, second fixes beam 1-2, the 3rd fixes beam 1-3 and walking beam 1-4 successively.First to fix beam 1-1 parallel with walking beam 1-4, first pressure matchmaker's swapdisk 2 and the 3rd pressure matchmaker's swapdisk 21 are separately fixed at first and fix on beam 1-1, second pressure matchmaker's swapdisk 7 is fixed on second and fixes on beam 1-2, high-pressure hydraulic pump 10 one end is fixed on second and fixes on beam 1-2, the other end is fixed on the 3rd and fixes on beam 1-3, and extrusion die is fixed on walking beam 1-4.First fix beam 1-1, second fix between beam 1-2 by tension force post 1-5 connect, second fix beam 1-2, the 3rd fix between beam 1-3 by tension force post 1-5 connect, first fix between beam 1-1 and walking beam 1-4 by tension force post 1-5 connect.
Described pressurization cylinder 5 one end is connected with first pressure matchmaker's swapdisk 2, and the other end and second pressure matchmaker's swapdisk 7 connect, and second pressure matchmaker's swapdisk 7 center is provided with through hole, and extrusion axis 9 stretches into pressurization cylinder 5 through the central through hole of second pressure matchmaker's swapdisk 7.Pressurization cylinder 5 inner chamber is provided with hollow steel bushing 4, beneficially extrusion medium 19 and is full of pressurization cylinder 5 and the inner chamber of recipient 22 quickly.Pressurization cylinder 5 be arranged in parallel with recipient 22, and is positioned in same level.Described recipient 22 one end is connected with extrusion die, the other end and the 3rd pressure matchmaker's swapdisk 21 connect, first pressure matchmaker's swapdisk 2 is provided with a L-shaped through hole, the inner chamber making pressurization cylinder 5 is in communication with the outside, 3rd pressure matchmaker's swapdisk 21 is provided with a L-shaped through hole, the inner chamber making recipient 22 is in communication with the outside, being provided with steel pipe 24 between the extraneous communications ports of two L-shaped through holes and communications ports opening is relative, steel pipe 24 two ends are connected by the extraneous communications ports of hydraulic fitting 23 and two L-shaped through holes respectively.First heating mantle 14 is arranged on the outer wall of extrusion die, and its original position is recipient 22 end face, and described end face is the end face that recipient 22 is connected end with extrusion die；Second heating mantle 18 is arranged on the outer wall of recipient 22, and the end face connecting end that its original position is extrusion die and recipient 22.
The structure of recipient 22, size are completely the same with pressurization cylinder 5, and both have interchangeability.
Pressurization cylinder 5 and first pressure matchmaker's swapdisk 2 junction are provided with the first sealing system 3, pressurization cylinder 5 and second pressure matchmaker's swapdisk 7 junction are provided with the second sealing system 6, recipient 22 and the 3rd pressure matchmaker's swapdisk 21 junction are provided with the 3rd sealing system 16, extrusion die and recipient 22 junction are provided with the 4th sealing system 20, described sealing system is O RunddichtringO and metal triangular pad, by described sealing system, it is achieved static seal.Second pressure matchmaker's swapdisk 7 is provided with sealing ring with extrusion axis 9 junction of hydraulic system, it is achieved movable sealing.
Second pressure matchmaker's swapdisk 7 is provided with a L-shaped through hole so that the inner chamber of pressurization cylinder 5 is in communication with the outside, and the extraneous communications ports of described L-shaped through hole is connected with hydraulic tube 8 by hydraulic fitting 23.
Described extrusion die includes upper mold 15, core rod 13, lower mold 12 and core base 11；Recipient 22 is stretched in described upper mold 15 one end, is connected with recipient 22, and the other end is connected with one end of lower mold 12, and upper mold 15 and lower mold 12 constitute hollow cylinder；Core base 11 one end is provided with boss, and described boss stretches into the other end of lower mold 12, and with its interference fits.The boss of core base 11 is provided with groove, and core rod 13 is arranged in above-mentioned hollow cylinder, and in the groove of the boss being fixed on described core base 11 bottom core rod 13, head stretches into upper mold 15.Ensure that core rod 13 and core base 11 are coaxial.
First heating mantle the 14, second heating mantle 18 all uses armored ceramic resistor silk heating mantle, uses K-type thermocouple to carry out temperature survey, and first heating mantle the 14, second heating mantle 18 is respectively adopted different heating-up temperatures.
With reference to Fig. 1, the shaped device of a kind of supertension hydrostatic extrusion magnesium alloy pipe and moulding process thereof, use step includes: 1. magnesium alloy blank 17 is carried out homogenization heat treatment, according to required size of pipe and tubing, magnesium alloy blank 17 one end is processed, and on blank end face, coats grease or lubricating oil；2. when expanding extruding pipe fitting, core rod 13 loading core base 11, core base 11 loads lower mold 12, and upper mold 15 loads lower mold 12, and ensures the axiality that core base 11, core rod 13, lower mold 12 and upper mold 15 are certain；3. utilize hydraulic extrusion press by step 1. described in the machined one end of magnesium alloy blank 17 get in upper mold 15, make to produce certain pretightning force between the two；4. 3rd sealing system 16 is installed at upper mold 15, magnesium alloy blank 17 other end is put in recipient 22；At upper mold 15, lower mold 12, load onto the first heating mantle 14 the most respectively and the second heating mantle 18 loaded onto by recipient 22；6. use low pressure (less than the 70 MPa) oil pump of hydraulic system by extrusion medium 19, fill pressurization cylinder 5 and recipient 22；7. check sealing, pressure 20MPa in pressurization cylinder 5,30Min, pressure stability need to be kept, fluctuate less；8. the first heating mantle 14 electrified regulation at upper mold 15, lower mold 12 is to design temperature 220 DEG C, is incubated 2h；The second heating mantle 18 electrified regulation on recipient 22, to design temperature 200 DEG C, is incubated 2h；9. promoting extrusion axis 9 to compress extrusion medium 19 by the high-pressure hydraulic pump 10 of hydraulic system and produce the supertension of more than 400MPa, magnesium alloy blank 17 is expanded extrusion, tube forming under hydrostatic pressure；10., after extruding terminates, unload hydraulic system, cylinder 22 to be extruded and extrusion die cooling, dismantle extrusion die, it is thus achieved that magnesium alloy pipe.
Claims (10)
1. the shaped device of a supertension hydrostatic extrusion magnesium alloy pipe, it is characterized in that: overall employing horizontal type structure, including pressurization cylinder (5), recipient (22), the first pressure matchmaker's swapdisk (2), the second pressure matchmaker's swapdisk (7), the 3rd pressure matchmaker's swapdisk (21), extrusion die, the first heating mantle (14), the second heating mantle (18) and the high-pressure hydraulic pump (10) with extrusion axis (9)；
Described pressurization cylinder (5) one end is connected with the first pressure matchmaker's swapdisk (2), the other end and the second pressure matchmaker's swapdisk (7) connect, second pressure matchmaker's swapdisk (7) center is provided with through hole, and extrusion axis (9) stretches into pressurization cylinder (5) through the central through hole of the second pressure matchmaker's swapdisk (7)；Pressurization cylinder (5) be arranged in parallel with recipient (22), and is positioned in same level；Described recipient (22) one end is connected with extrusion die, the other end and the 3rd pressure matchmaker's swapdisk (21) connect, first pressure matchmaker's swapdisk (2) is provided with a L-shaped through hole, the inner chamber making pressurization cylinder (5) is in communication with the outside, 3rd pressure matchmaker's swapdisk (21) is provided with a L-shaped through hole, the inner chamber making recipient (22) is in communication with the outside, being provided with steel pipe (24) between the extraneous communications ports of two L-shaped through holes, steel pipe (24) two ends are connected by the extraneous communications ports of hydraulic fitting (23) with two L-shaped through holes respectively；First heating mantle (14) is arranged on the outer wall of extrusion die, covers recipient (22) and is connected the end face of end with extrusion die；Second heating mantle (18) is arranged on the outer wall of recipient (22), covers the end face connecting end of extrusion die and recipient (22).
The shaped device of supertension hydrostatic extrusion magnesium alloy pipe the most according to claim 1, it is characterised in that: also include that hollow steel bushing (4), hollow steel bushing (4) are arranged on pressurization cylinder (5) inner chamber；The structure of recipient (22), size are identical with pressurization cylinder (5).
The shaped device of supertension hydrostatic extrusion magnesium alloy pipe the most according to claim 1, it is characterized in that: the extraneous communications ports of the L-shaped through hole in described first pressure matchmaker's swapdisk (2) is relative with the extraneous communications ports opening of the L-shaped through hole in the 3rd pressure matchmaker's swapdisk (21) so that joint steel pipe (24) distance is the shortest.
The shaped device of supertension hydrostatic extrusion magnesium alloy pipe the most according to claim 1, it is characterized in that: also include the first sealing system (3), second sealing system (6), 3rd sealing system (16) and the 4th sealing system (20), pressurization cylinder (5) is provided with the first sealing system (3) with the first pressure matchmaker's swapdisk (2) junction, pressurization cylinder (5) is provided with the second sealing system (6) with the second pressure matchmaker's swapdisk (7) junction, recipient (22) is provided with the 3rd sealing system (16) with the 3rd pressure matchmaker's swapdisk (21) junction, extrusion die and recipient (22) junction are provided with the 4th sealing system (20), described sealing system is O RunddichtringO and metal triangular pad, by described sealing system, realize static seal.
The shaped device of supertension hydrostatic extrusion magnesium alloy pipe the most according to claim 1, it is characterised in that: described second pressure matchmaker's swapdisk (7) is provided with sealing ring with extrusion axis (9) junction of hydraulic system, it is achieved movable sealing.
The shaped device of supertension hydrostatic extrusion magnesium alloy pipe the most according to claim 1, it is characterized in that: the second pressure matchmaker's swapdisk (7) is provided with a L-shaped through hole, the inner chamber making pressurization cylinder (5) is in communication with the outside, and the extraneous communications ports of described L-shaped through hole is connected with hydraulic tube (8) by hydraulic fitting (23).
The shaped device of supertension hydrostatic extrusion magnesium alloy pipe the most according to claim 1, it is characterised in that: described extrusion die includes upper mold (15), core rod (13), lower mold (12) and core base (11)；Recipient (22) is stretched in described upper mold (15) one end, is connected with recipient (22), and the other end is connected with the one end of lower mold (12), and upper mold (15) and lower mold (12) constitute hollow cylinder；Core base (11) one end is provided with boss, and described boss stretches into the other end of lower mold (12), and with its interference fits；The boss of core base (11) is provided with groove, and core rod (13) is arranged in above-mentioned hollow cylinder, and in the groove of the boss that core rod (13) bottom is fixed on described core base (11), head stretches into upper mold (15)；Ensure that core rod (13) and core base (11) are coaxial.
The shaped device of supertension hydrostatic extrusion magnesium alloy pipe the most according to claim 1, it is characterized in that: described first heating mantle (14), the second heating mantle (18) all use armored ceramic resistor silk heating mantle, using K-type thermocouple to carry out temperature survey, the first heating mantle (14), the second heating mantle (18) are respectively adopted different heating-up temperatures.
The shaped device of supertension hydrostatic extrusion magnesium alloy pipe the most according to claim 1, it is characterized in that: also include frame 1, frame 1 includes first fixing beam (1-1), second fixing beam (1-2), the 3rd fix beam (1-3), walking beam (1-4) and tension force post (1-5), and parallel interval arranges and first fixes beam (1-1), second fixes beam (1-2), the 3rd fixes beam (1-3) and walking beam (1-4) successively；First to fix beam (1-1) parallel with walking beam (1-4), first pressure matchmaker's swapdisk (2) and the 3rd pressure matchmaker's swapdisk (21) are separately fixed at first and fix on beam (1-1), second pressure matchmaker's swapdisk (7) is fixed on second and fixes on beam (1-2), high-pressure hydraulic pump (10) one end is fixed on second and fixes on beam (1-2), the other end is fixed on the 3rd and fixes on beam (1-3), and the core base (11) of extrusion die is fixed on walking beam (1-4)；First fix beam (1-1), second fix between beam (1-2) by tension force post (1-5) connect, second fix beam (1-2), the 3rd fix between beam (1-3) by tension force post (1-5) connect, first fix between beam (1-1) and walking beam (1-4) by tension force post (1-5) connection.
10. the moulding process of a supertension hydrostatic extrusion magnesium alloy pipe, it is characterized in that, step is as follows: 1. magnesium alloy blank (17) is carried out homogenization heat treatment, according to required size of pipe and tubing, magnesium alloy blank (17) one end is processed, and on blank end face, coats grease or lubricating oil；2. when expanding extruding pipe fitting, core rod (13) is loaded core base (11), core base (11) loads lower mold (12), and upper mold (15) loads lower mold (12), and ensures the axiality that core base (11), core rod (13), lower mold (12) and upper mold (15) are certain；3. utilize hydraulic extrusion press by step 1. described in the machined one end of magnesium alloy blank (17) get in upper mold (15), make to produce certain pretightning force between the two；3rd sealing system (16) is 4. installed at upper mold (15) place, magnesium alloy blank (17) other end is put in recipient (22)；The most respectively in upper mold (15), lower mold (12) place loads onto the first heating mantle (14) and the second heating mantle (18) loaded onto by recipient (22)；6. using the low pressure of hydraulic system, i.e. less than 70 MPa, oil pump, by extrusion medium (19), fills pressurization cylinder (5) and recipient (22)；7. check sealing, pressurization cylinder (5) interior pressure 20MPa, 30Min, pressure stability need to be kept, fluctuate less；8. upper mold (15), lower mold (12) place the first heating mantle (14) electrified regulation to design temperature 220 DEG C, be incubated 2h；The second heating mantle (18) electrified regulation on recipient (22), to design temperature 200 DEG C, is incubated 2h；9. promoting extrusion axis (9) compression extrusion medium (19) to produce the supertension of more than 400MPa by the high-pressure hydraulic pump (10) of hydraulic system, magnesium alloy blank (17) is expanded extrusion, tube forming under hydrostatic pressure；10., after extruding terminates, unload hydraulic system, cylinder to be extruded (22) and extrusion die cooling, dismantle extrusion die, it is thus achieved that magnesium alloy pipe.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107838351A (en) * | 2017-10-26 | 2018-03-27 | 杨晓艳 | The processing molding method and purposes of a kind of magnesium alloy sheet |
| CN109304377A (en) * | 2018-11-21 | 2019-02-05 | 中国重型机械研究院股份公司 | A kind of metal hydrostatic extruder return device of rapid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040129053A1 (en) * | 2001-05-11 | 2004-07-08 | Klaus Siegert | Hydromechanical closing device, in particular for lateral extrusion. |
| CN202028627U (en) * | 2011-04-21 | 2011-11-09 | 湖州机床厂有限公司 | Three-way pipe extrusion molding device |
| CN202490842U (en) * | 2012-03-16 | 2012-10-17 | 上海宇擎新材料有限公司 | Magnesium alloy swaging forming device |
-
2015
- 2015-06-18 CN CN201510337557.9A patent/CN106311783B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040129053A1 (en) * | 2001-05-11 | 2004-07-08 | Klaus Siegert | Hydromechanical closing device, in particular for lateral extrusion. |
| CN202028627U (en) * | 2011-04-21 | 2011-11-09 | 湖州机床厂有限公司 | Three-way pipe extrusion molding device |
| CN202490842U (en) * | 2012-03-16 | 2012-10-17 | 上海宇擎新材料有限公司 | Magnesium alloy swaging forming device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107838351A (en) * | 2017-10-26 | 2018-03-27 | 杨晓艳 | The processing molding method and purposes of a kind of magnesium alloy sheet |
| CN109304377A (en) * | 2018-11-21 | 2019-02-05 | 中国重型机械研究院股份公司 | A kind of metal hydrostatic extruder return device of rapid |
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