CN104162948A - High-strength or low-plasticity material hollow member low pressure thermoforming apparatus and method thereof - Google Patents
High-strength or low-plasticity material hollow member low pressure thermoforming apparatus and method thereof Download PDFInfo
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- CN104162948A CN104162948A CN201410329790.8A CN201410329790A CN104162948A CN 104162948 A CN104162948 A CN 104162948A CN 201410329790 A CN201410329790 A CN 201410329790A CN 104162948 A CN104162948 A CN 104162948A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/045—Closing or sealing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/047—Mould construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
Abstract
The invention relates to a high strength or low-plasticity material hollow member low pressure thermoforming apparatus and a method thereof. The method comprises the following steps: preparing a mold, preparing an initial pipe blank, selecting the initial pipe blank with appropriate size, sealing the end part of the pipe blank by a left seal punch and a right seal punch, then moving to an assigned position together; moving a left electrode and a right electrode to the initial pipe blank for contacting, adjusting a pressure-reducing valve, closing a power switch, descending an upper mold to urge the formation of the pipe blank, controlling the internal air pressure until the mold is closed; continuously maintaining pressure to molding the pipe blank, breaking the power switch, turning on a cooling medium switch, introducing a cooling medium into the pipe blank, backing without influence of removal of a forming part, opening the mold, and removing the forming part. The apparatus and the method have the beneficial effects that when the high strength or low ductility hollow member are formed by current apparatus and technology, problems of large deformation resistance, poor uniformity of wall thickness of the forming part and low dimension precision, easy rupture generation, low efficiency and difficult heat treatment synchronization can be solved.
Description
Technical field
The present invention relates to machinery production field, particularly a kind of high strength or inductile material hollow unit low pressure thermal forming device and method.
Background technology
Due to the high composite bending modulus of hollow section member and modulus of rigidity, be considered to the light-weighted optimum structure form of implementation structure.Be widely used in the industries such as Aeronautics and Astronautics, automobile and bicycle.In fluid, pressing formation is the advanced forming technique of this class A of geometric unitA of processing.In fluid, the know-why of pressing formation is initial blank inside to be applied to high pressure medium blank perimeter of section is increased and the hollow member of the different cross section form that is shaped.The essence of its distortion is blank dilatancy.But this kind of deformation pattern has limitation, can not be higher for intensity or the shaping of the lower material of plasticity, its reason shows as following several respects:
One, for needing the material of phase transformation strengthening cannot realize heat treatment in forming process.
Two, because interior pressure is unique distortion driving force, while only having pressure to reach very high, just may order about tubing is shaped completely, therefore must be equipped with special-purpose high-power booster, be subject to superhigh pressure sealing technical limitations simultaneously, when shaping high strength or inductile material hollow unit, difficulty is very large.In addition,, for enough mold clamping forces are provided, must adopt large-tonnage equipment.The problems referred to above have hindered the engineering application of this technology greatly.
They are three years old, because pressing formation in fluid mainly produces required odd-shaped cross section by dilatancy, and dilatancy pattern belongs to two tensile stress states, for the lower material of plasticity, easily break, during therefore for aluminium, magnesium alloy there is very large defect in this technology.
Its four, generally lower for its elastic modelling quantity of Materials with High Strength, during shaping, elasticity recovers violent, in room temperature fluid, the form accuracy of pressing formation is difficult to guarantee.
There is scholar to propose hot interior pressing formation, although the method has solved the problem of forming limit, aggravated the problem of wall unevenness, and the restriction of the restriction of heated medium booster and gases at high pressure safety problem, be unsuitable for engineering application.
For these reasons, transfer being bent into main deformation pattern to, change the interior pressing formation of fluid to be expanded to the drawback of unique deformation pattern, and make full use of that high temperature lower volume expands and forming process in member section change the interior pressure causing and for being out of shape, provide driving force from the characteristic that raises, avoid under traditional handicraft the depending on unduly of booster, drip molding springback capacity is large, form accuracy is low and evenness of wall thickness is poor problem, reduce technology difficulty, widen the technique scope of application, improving forming quality is motive power of the present invention.
Summary of the invention
Object of the present invention is exactly in view of the foregoing defects the prior art has, a kind of high strength or inductile material hollow unit low pressure thermal forming device and method are provided, when it mainly solves existing apparatus and process forming high strength or inductile hollow unit, resistance of deformation is large, drip molding evenness of wall thickness is poor and dimension type precision is not high, easily break, the low problem with cannot synchronously heat-treating of efficiency.
A kind of high strength or inductile material hollow unit low pressure thermal forming device, comprise left electrode (2), left sealing punch (3), mold (15), right electrode (16), right sealing punch (17) and bed die (21), it is characterized in that: described mold (15) is connected with upper table (11), bed die (21) is connected with lower table (1); Left sealing punch (3) is connected with external refrigeration medium source (6) with cooling medium switch (4) by Filled Dielectrics passage (5), is connected by check valve (7), pressure-reducing valve (8) with air inlet switch (10) with extraneous gas medium source (9) simultaneously; Right sealing punch (17) has pressure release passage (19) and is connected with relief valve (18); Left electrode (2) is connected with power supply (14) with power switch (13) by wire (12) with right electrode (16);
By left sealing punch (3) and right sealing punch (17), to initial pipe (20) end part seal, and move on to assigned address; Left electrode (2) moves to initial pipe (20) and contacts with right electrode (16), and left electrode (2) is arranged on the right side of left sealing punch (3), and right electrode (16) is arranged on the left side of right sealing punch (17).
The section girth of above-mentioned initial pipe (20) equals 0.5-1.5 times of whole drip molding perimeter of section.
Above-mentioned power switch (13) closure, and fast the pipe integral body of sealing energising is moved in the die cavity of bed die (21), wherein, traveling time is no more than 60 seconds.
It is descending that above-mentioned mold (15) is pressed setting curve, and compression pipe occurs bending and deformation it, and pipe sectional area reduces thereupon, and internal pressure raises, and impels pipe to be shaped, and in whole process, by relief valve (18), controls air pressure inside.
A kind of high strength that the present invention mentions or the hot formed method of inductile material hollow unit low pressure, comprise the following steps:
Step 1: mould is prepared, first according to Components Shape design corresponding left electrode (2), left sealing punch (3), mold (15), right electrode (16), right sealing punch (17) and bed die (21), described mold (15) is connected with upper table (11), and bed die (21) is connected with lower table (1); Left sealing punch (3) is connected with external refrigeration medium source (6) with cooling medium switch (4) by Filled Dielectrics passage (5), is connected by check valve (7), pressure-reducing valve (8) with air inlet switch (10) with extraneous gas medium source (9) simultaneously; Right sealing punch (17) has pressure release passage (19) and is connected with relief valve (18); Left electrode (2) is connected with power supply (14) with power switch (13) by wire (12) with right electrode (16);
Step 2: initial pipe is prepared, and selects the suitable initial pipe of size, wherein, the section girth of initial pipe equals 0.5-1.5 times of whole drip molding perimeter of section, and initial pipe length is greater than part length;
Step 3: left sealing punch (3) and right sealing punch (17), to pipe end part seal, then move on to assigned address together;
Step 4: left electrode (2) moves to initial pipe and contacts with right electrode (16), wherein, left electrode is arranged on the right side of left sealing punch, and right electrode is arranged on the left side of right sealing punch;
Step 5: adjust pressure-reducing valve (8), pressure is reduced to concrete technology desired value, then open air inlet switch (10) to pipe internal ventilation body medium;
Step 6: power switch (13) closure, the pipe integral body of sealing energising is moved in the die cavity of bed die (21), and traveling time is no more than 60 seconds;
Step 7: mold (15) is descending, compression pipe occurs bending and deformation it, and pipe sectional area reduces thereupon, internal pressure further raises, impel pipe to be further shaped, in whole process, by relief valve (18), control air pressure inside, until mould is closed;
Step 8: pressurize, continues to pipe and be shaped;
Step 9: power switch (13) disconnects, and opens cooling medium switch (4), to the inner logical cooling medium of pipe, pressure increases to relief valve and opens, and gas flow and ventilation duration meet the requirement of drip molding process for cooling simultaneously;
Step 10: close cooling medium switch (4), left sealing punch (3), right sealing punch (17), left electrode (2) and right electrode (16) retreat to not affecting drip molding and take out, and open mould, take out drip molding (22).
Preferably, in above-mentioned step 5, for Materials with High Strength pressure, reduce to 0 ~ 50MPa, inductile material pressure reduces to 0 ~ 40MPa.
Preferably, above-mentioned power supply is pulse current power supply
Preferably, the assigned address in step 3 is bed die (21) or is convenient to connecting electrode region.
Preferably, above-mentioned initial pipe (20) adopts high-strength material or inductile material.
Preferably, above-mentioned cooling medium source (6) is cryogenic gas or liquid; Gas medium is room temperature air or cryogenic gas.
The invention has the beneficial effects as follows:
One, makes full use of the interior pressure that temperature own in technical process raises and change in volume causes and increases as distortion driving force, and without optional equipment booster, technique is simple, and cost is low;
Its two, adopt the cooling medium with certain pressure directly in mold cavity, member to be quenched, be conducive to guarantee the geometric accuracy of drip molding, and improve process efficiency;
Its three, because the deformation pattern of this technique be take flexural deformation as main, avoided the adverse effect that under high temperature, hardenability value reduces, drip molding evenness of wall thickness is good, technique applicability is strong;
Its four, by cooling medium, in hollow section member cavity, quench, because medium directly contacts with member, cooling velocity is fast and evenly, performance is unanimously good;
Its five, under hot forming, strain is extremely low, drip molding is almost without resilience, drip molding form accuracy easily guarantees;
Its six, by large power supply, directly to heating of pipe blank, speed is fast, thermal losses is low, has overcome in traditional hot fluid pressing formation efficiency low, can not meet the shortcoming of engineering application;
The present invention is reasonable in design, reliable operation, effect are remarkable, has stronger promotional value.
Accompanying drawing explanation
Fig. 1 is the structural representation of mould of the present invention;
Fig. 2 is the A-A structure chart of mould of the present invention;
Fig. 3 is mould matched moulds and quenching principle schematic diagram;
Fig. 4 is the B-B structure chart of Fig. 3;
In upper figure: lower table 1, left electrode 2, left sealing punch 3, cooling medium switch 4, Filled Dielectrics passage 5, cooling medium source 6, check valve 7, pressure-reducing valve 8, gas medium source 9, air inlet switch 10, upper table 11, wire 12, power switch 13, power supply 14, mold 15, right electrode 16, right sealing punch 17, relief valve 18, pressure release passage 19, initial pipe 20, bed die 21, drip molding 22.
The specific embodiment
With reference to accompanying drawing 1-2, the invention will be further described:
A kind of high strength that the present invention mentions or inductile material hollow unit low pressure thermal forming device, comprise left electrode 2, left sealing punch 3, mold 15, right electrode 16, right sealing punch 17 and bed die 21, it is characterized in that: described mold 15 is connected with upper table 11, bed die 21 is connected with lower table 1; Left sealing punch 3 is connected with external refrigeration medium source 6 with cooling medium switch 4 by Filled Dielectrics passage 5, is connected by check valve 7, pressure-reducing valve 8 with air inlet switch 10 with extraneous gas medium source 9 simultaneously; Right sealing punch 17 has pressure release passage 19 and is connected with relief valve 18; Left electrode 2 is connected with power supply 14 with power switch 13 by wire 12 with right electrode 16;
By left sealing punch 3 and 17 pairs of initial pipe 20 end part seals of right sealing punch, and move on to assigned address; Left electrode 2 moves to initial pipe 20 and contacts with right electrode 16, and left electrode 2 is arranged on the right side of left sealing punch 3, and right electrode 16 is arranged on the left side of right sealing punch 17.
The section girth of above-mentioned initial pipe 20 equals 0.5-1.5 times of whole drip molding perimeter of section.
Above-mentioned power switch 13 closures, and fast the pipe integral body of sealing energising is moved in the die cavity of bed die 21, wherein, traveling time is no more than 60 seconds.
It is descending that above-mentioned mold 15 is pressed setting curve, and compression pipe occurs bending and deformation it, and pipe sectional area reduces thereupon, and internal pressure raises, and impels pipe to be shaped, and in whole process, by relief valve 18, controls air pressure inside.
With reference to accompanying drawing 3-4, a kind of high strength that the present invention mentions or the hot formed method of inductile material hollow unit low pressure, comprise the following steps:
Step 1: mould is prepared, first, according to the corresponding left electrode 2 of Components Shape design, left sealing punch 3, mold 15, right electrode 16, right sealing punch 17 and bed die 21, above-mentioned same as the prior art, this does not repeat.Mold 15 is connected with upper table 11, and bed die 21 is connected with lower table 1.Left sealing punch 3 is connected with external refrigeration medium source 6 with cooling medium switch 4 by Filled Dielectrics passage 5, is connected by check valve 7, pressure-reducing valve 8 with air inlet switch 10 with extraneous gas medium source 9 simultaneously.Right sealing punch 17 has pressure release passage 19 and is connected with relief valve 18.Left electrode 2 is connected with power supply 14 with power switch 13 by wire 12 with right electrode 16.
Step 2: initial pipe is prepared, and selects the suitable initial pipe of size, and the section girth that its main points are initial pipe is close with the section girth of whole drip molding, the section girth of general initial pipe should equal 0.5-1.5 times of whole drip molding perimeter of section.Initial pipe length should be greater than part length, ensures enough sealing areas and electrode contact region.
Step 3: 17 pairs of pipe end part seals of left sealing punch 3 and right sealing punch, then move on to assigned address together.Sealing means is same as the prior art, and this does not repeat.
Step 4: left electrode 2 moves to pipe and contacts with right electrode 16, its main points are that left electrode should be on the right side of left sealing punch, and right electrode should, in the left side of right sealing punch, guarantee
l a be less than
l b .
Step 5: adjust pressure-reducing valve 8, pressure is reduced to concrete technology desired value, then open air inlet switch 10 to pipe internal ventilation body medium.Its main points are for generally to reduce to 0 ~ 50MPa for Materials with High Strength pressure, and inductile material pressure generally reduces to 0 ~ 40MPa.
Step 6: power switch 13 closures, and fast the pipe integral body of sealing energising is moved in the die cavity of bed die 21, its main points are that traveling time is no more than 60 seconds.Along with the carrying out of energising, pipe temperature constantly raises, and the flow stress of material declines, and percentage elongation improves, while pipe internal gas expanded by heating, and air pressure constantly raises.
Step 7: it is descending that mold 15 is pressed technique initialization curve, compression pipe occurs bending and deformation it, pipe sectional area reduces thereupon, internal pressure further raises, impel pipe to be further shaped, in whole process, by relief valve 18, control air pressure inside maximum in concrete technology claimed range, until mould is closed.
Step 8: pressurize certain hour, its main points are that pressurize continues to pipe shaping.
Step 9: power switch 13 disconnects, and opens cooling medium switch 4, to the inner logical cooling medium of pipe, and certain time, its main points are that pressure increases to relief valve unlatching also, gas flow and ventilation duration meet the requirement of drip molding process for cooling simultaneously.
Step 10: close cooling medium switch 4, left sealing punch 3, right sealing punch 17, left electrode 2 and right electrode 16 retreat to not affecting drip molding and take out, and open mould, take out drip molding 22.
Wherein, the power supply that the present invention mentions is large power supply, and large power supply is current range 0-5000000A, the power supply of voltage range 0-36V, power supply is pulse current power supply, pulse frequency 0-10000Hz, amplitude 0-100000A, the power supply of voltage range 0-100000V.
Assigned address in step 3 be bed die 21 or just with connecting electrode region; Assigned address in step 3 is the interior die cavity of bed die 21; Assigned address in step 3 is for ease of connecting electrode region;
High-strength material or inductile material that initial pipe adopts, high-strength material is high-strength steel or titanium alloy, and high-strength steel is 22MnB5, and titanium alloy is TC4; Inductile material is aluminium alloy or magnesium alloy, aluminium alloy be 2000 be, 5000 be 6000 to be or 7000 line aluminium alloys;
Cooling medium is cryogenic gas or liquid, and gas medium is room temperature air or cryogenic gas, and gas medium is cryogenic gas.
Claims (10)
1. a high strength or inductile material hollow unit low pressure thermal forming device, comprise left electrode (2), left sealing punch (3), mold (15), right electrode (16), right sealing punch (17) and bed die (21), it is characterized in that: described mold (15) is connected with upper table (11), bed die (21) is connected with lower table (1); Left sealing punch (3) is connected with external refrigeration medium source (6) with cooling medium switch (4) by Filled Dielectrics passage (5), is connected by check valve (7), pressure-reducing valve (8) with air inlet switch (10) with extraneous gas medium source (9) simultaneously; Right sealing punch (17) has pressure release passage (19) and is connected with relief valve (18); Left electrode (2) is connected with power supply (14) with power switch (13) by wire (12) with right electrode (16);
By left sealing punch (3) and right sealing punch (17), to initial pipe (20) end part seal, and move on to assigned address; Left electrode (2) moves to initial pipe (20) and contacts with right electrode (16), and left electrode (2) is arranged on the right side of left sealing punch (3), and right electrode (16) is arranged on the left side of right sealing punch (17).
2. high strength according to claim 1 or inductile material hollow unit low pressure thermal forming device, is characterized in that: the section girth of described initial pipe (20) equals 0.5-1.5 times of whole drip molding perimeter of section.
3. high strength according to claim 1 or inductile material hollow unit low pressure thermal forming device, it is characterized in that: described power switch (13) closure, and fast the pipe integral body of sealing energising is moved in the die cavity of bed die (21), wherein, traveling time is no more than 60 seconds.
4. high strength according to claim 1 or inductile material hollow unit low pressure thermal forming device, it is characterized in that: described mold (15) is descending by setting curve, compression pipe occurs bending and deformation it, pipe sectional area reduces thereupon, internal pressure raises, impel pipe to be shaped, in whole process, by relief valve (18), control air pressure inside.
5. high strength or the hot formed method of inductile material hollow unit low pressure, is characterized in that comprising the following steps:
Step 1: mould is prepared, first according to Components Shape design corresponding left electrode (2), left sealing punch (3), mold (15), right electrode (16), right sealing punch (17) and bed die (21), described mold (15) is connected with upper table (11), and bed die (21) is connected with lower table (1); Left sealing punch (3) is connected with external refrigeration medium source (6) with cooling medium switch (4) by Filled Dielectrics passage (5), is connected by check valve (7), pressure-reducing valve (8) with air inlet switch (10) with extraneous gas medium source (9) simultaneously; Right sealing punch (17) has pressure release passage (19) and is connected with relief valve (18); Left electrode (2) is connected with power supply (14) with power switch (13) by wire (12) with right electrode (16);
Step 2: initial pipe is prepared, and selects the suitable initial pipe of size, wherein, the section girth of initial pipe equals 0.5-1.5 times of whole drip molding perimeter of section, and initial pipe length is greater than part length;
Step 3: left sealing punch (3) and right sealing punch (17), to pipe end part seal, then move on to assigned address together;
Step 4: left electrode (2) moves to initial pipe and contacts with right electrode (16), wherein, left electrode is arranged on the right side of left sealing punch, and right electrode is arranged on the left side of right sealing punch;
Step 5: adjust pressure-reducing valve (8), pressure is reduced to concrete technology desired value, then open air inlet switch (10) to pipe internal ventilation body medium;
Step 6: power switch (13) closure, the pipe integral body of sealing energising is moved in the die cavity of bed die (21), and traveling time is no more than 60 seconds;
Step 7: mold (15) is descending, compression pipe occurs bending and deformation it, and pipe sectional area reduces thereupon, internal pressure further raises, impel pipe to be further shaped, in whole process, by relief valve (18), control air pressure inside, until mould is closed;
Step 8: pressurize, continues to pipe and be shaped;
Step 9: power switch (13) disconnects, and opens cooling medium switch (4), to the inner logical cooling medium of pipe, pressure increases to relief valve and opens, and gas flow and ventilation duration meet the requirement of drip molding process for cooling simultaneously;
Step 10: close cooling medium switch (4), left sealing punch (3), right sealing punch (17), left electrode (2) and right electrode (16) retreat to not affecting drip molding and take out, and open mould, take out drip molding (22).
6. high strength according to claim 5 or the hot formed method of inductile material hollow unit low pressure, is characterized in that:
In above-mentioned step 5, for Materials with High Strength pressure, reduce to 0 ~ 50MPa, inductile material pressure reduces to 0 ~ 40MPa.
7. high strength according to claim 5 or the hot formed method of inductile material hollow unit low pressure, is characterized in that: described power supply is pulse current power supply.
8. high strength according to claim 5 or the hot formed method of inductile material hollow unit low pressure, is characterized in that: the assigned address in step 3 is bed die (21) or is convenient to connecting electrode region.
9. high strength according to claim 5 or the hot formed method of inductile material hollow unit low pressure, is characterized in that: described initial pipe (20) adopts high-strength material or inductile material.
10. high strength according to claim 5 or the hot formed method of inductile material hollow unit low pressure, is characterized in that: described cooling medium source (6) is cryogenic gas or liquid.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410329790.8A CN104162948B (en) | 2014-07-11 | 2014-07-11 | A kind of high intensity or inductile material hollow unit low pressure thermal forming device and method |
| CN201610568082.9A CN106180347A (en) | 2014-07-11 | 2014-07-11 | A kind of hollow unit low pressure thermal forming device |
| CN201610549347.0A CN106180345B (en) | 2014-07-11 | 2014-07-11 | A kind of high intensity or the hot formed method of inductile material hollow unit low pressure |
| CN201610568064.0A CN106180346B (en) | 2014-07-11 | 2014-07-11 | A kind of low pressure thermal forming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410329790.8A CN104162948B (en) | 2014-07-11 | 2014-07-11 | A kind of high intensity or inductile material hollow unit low pressure thermal forming device and method |
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| CN201610568064.0A Division CN106180346B (en) | 2014-07-11 | 2014-07-11 | A kind of low pressure thermal forming device |
| CN201610549347.0A Division CN106180345B (en) | 2014-07-11 | 2014-07-11 | A kind of high intensity or the hot formed method of inductile material hollow unit low pressure |
| CN201610568082.9A Division CN106180347A (en) | 2014-07-11 | 2014-07-11 | A kind of hollow unit low pressure thermal forming device |
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| CN104162948A true CN104162948A (en) | 2014-11-26 |
| CN104162948B CN104162948B (en) | 2016-08-24 |
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| CN201610568064.0A Expired - Fee Related CN106180346B (en) | 2014-07-11 | 2014-07-11 | A kind of low pressure thermal forming device |
| CN201610549347.0A Expired - Fee Related CN106180345B (en) | 2014-07-11 | 2014-07-11 | A kind of high intensity or the hot formed method of inductile material hollow unit low pressure |
| CN201610568082.9A Pending CN106180347A (en) | 2014-07-11 | 2014-07-11 | A kind of hollow unit low pressure thermal forming device |
| CN201410329790.8A Active CN104162948B (en) | 2014-07-11 | 2014-07-11 | A kind of high intensity or inductile material hollow unit low pressure thermal forming device and method |
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| CN201610568064.0A Expired - Fee Related CN106180346B (en) | 2014-07-11 | 2014-07-11 | A kind of low pressure thermal forming device |
| CN201610549347.0A Expired - Fee Related CN106180345B (en) | 2014-07-11 | 2014-07-11 | A kind of high intensity or the hot formed method of inductile material hollow unit low pressure |
| CN201610568082.9A Pending CN106180347A (en) | 2014-07-11 | 2014-07-11 | A kind of hollow unit low pressure thermal forming device |
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| CN104525746A (en) * | 2015-01-06 | 2015-04-22 | 哈尔滨工业大学（威海） | Rapid heating and forming integrated device and method |
| CN106311857A (en) * | 2015-12-21 | 2017-01-11 | 哈尔滨工业大学（威海） | Low pressure upsetting bulge forming method for hollow component with complex section |
| CN106311857B (en) * | 2015-12-21 | 2017-11-07 | 青岛世冠装备科技有限公司 | A kind of swollen manufacturing process of complex section hollow member low pressure upsetting |
| CN106623577A (en) * | 2016-09-27 | 2017-05-10 | 贺州学院 | Wave mode hydraulic loading method |
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| CN112739472A (en) * | 2018-10-01 | 2021-04-30 | 住友重机械工业株式会社 | Expansion forming device |
| CN112739472B (en) * | 2018-10-01 | 2023-05-09 | 住友重机械工业株式会社 | Expansion forming device |
| CN113510176A (en) * | 2020-04-10 | 2021-10-19 | 初冠南 | Pressurizing heading forming device |
| CN113510176B (en) * | 2020-04-10 | 2024-01-19 | 初冠南 | Pressurizing upsetting forming device |
| CN111451351A (en) * | 2020-04-30 | 2020-07-28 | 初冠南 | Forming and integrating method for tubular part |
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| CN113020391A (en) * | 2021-03-04 | 2021-06-25 | 北京航空航天大学 | Ultrahigh-pressure forming method and device for high-temperature alloy fluid medium |
| CN113020391B (en) * | 2021-03-04 | 2022-05-03 | 北京航空航天大学 | Ultrahigh-pressure forming method and device for high-temperature alloy fluid medium |
| CN114653806A (en) * | 2022-03-01 | 2022-06-24 | 哈尔滨工业大学（威海） | Preforming method for high-strength steel variable-diameter tubular part |
| CN114653806B (en) * | 2022-03-01 | 2023-12-22 | 哈尔滨工业大学（威海） | Preforming method for high-strength steel reducing tubular part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106180347A (en) | 2016-12-07 |
| CN106180345B (en) | 2018-07-20 |
| CN104162948B (en) | 2016-08-24 |
| CN106180346A (en) | 2016-12-07 |
| CN106180345A (en) | 2016-12-07 |
| CN106180346B (en) | 2018-06-12 |
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Effective date of registration: 20170704 Address after: 266109 Shandong Province, Qingdao city Chengyang District Street projects Li Xian Zhuang community 970. Patentee after: Qingdao crown Equipment Technology Co., Ltd. Address before: 264000 No. 2, Wenhua West Road, Shandong, Weihai Patentee before: Chu Guannan |