CN203044895U - Horizontal type bi-directional flexible hydraulic compacting machine - Google Patents
Horizontal type bi-directional flexible hydraulic compacting machine Download PDFInfo
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- CN203044895U CN203044895U CN 201220729881 CN201220729881U CN203044895U CN 203044895 U CN203044895 U CN 203044895U CN 201220729881 CN201220729881 CN 201220729881 CN 201220729881 U CN201220729881 U CN 201220729881U CN 203044895 U CN203044895 U CN 203044895U
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Abstract
The utility model discloses a horizontal type bi-directional flexible hydraulic compacting machine which is composed of a machine tool bed, a forming die and a hydraulic system, wherein the forming die is installed and fixed on a working table of the machine tool bed and is connected with the hydraulic system through a left movable press plate and a right movable press plate, a left pressure dense working unit and a right pressure dense working unit of the hydraulic system are both installed and fixed on the machine tool bed and respectively located on the left side and on the right side of the forming die, and the left pressure dense working unit and the right pressure dense working unit of the hydraulic system are connected with the forming die respectively through a left oil cylinder pressure head and a right oil cylinder pressure head. According to the horizontal type bi-directional flexible hydraulic compacting machine, the whole technical operation process of compacting molybdenum rare earth alloy powder into a formed green body can be accomplished independently at one time, and potential quality hazards, such as swelling, shrinkage, sandwiching and cracking, easily existing in the formed green body according to a traditional liquid medium isostatic pressing forming technique are avoided. The horizontal type bi-directional flexible hydraulic compacting machine has the advantages of being advanced in technology, complete in function, easy to operate, reliable in performance, and the like. The horizontal type bi-directional flexible hydraulic compacting machine can be widely used in the powder metallurgical industry for green body compact-forming work.
Description
Technical field
The utility model relates to a kind of powder metallurgy shaping plant equipment, relates to a kind of horizontal bidirectional flexible hydraulic harder that carries out body formation for big specification powder metallurgy molybdenum base rare earth alloy slab material specifically.
Background technology
Molybdenum-base alloy sheet material, under hot conditions, still have higher intensity and hardness, still can keep good electric conductivity and conductivity of heat, has fabulous stability, be widely used in technical fields such as Aero-Space, defence and military, chemical metallurgy, power electronics, in new high-tech products such as high-power transmitting tube, high-voltage large current IGCT and rectifier, high temperature thermocouple and protection tube thereof, high-temperature electric resistance furnace heat screen, extraordinary electric light source, all be the essential basic function material that uses particularly; But because the metal molybdenum recrystallization temperature is low, very easily brittle failure, processing technology is poor, and particularly big specification molybdenum-base alloy sheet material processing and manufacturing difficulty is bigger, and technology content is higher, and a lot of countries all classify it as strategic materials and carry out control and management.
The molybdenum plate blank is the basic material of manufacturing molybdenum-base alloy sheet material, can directly influence or determine the performance quality of molybdenum-base alloy sheet material; Have only and develop out the high performance molybdenum plate blank of high-quality, could manufacture out the high performance molybdenum-base alloy sheet material of high-quality.Because molybdenum in China slab material is developed and is started late, foundation is weak is subjected to many-sided restriction such as technical merit, production capacity, basic condition, begins to use casting method to make the molybdenum plate blank, the molybdenum plate specification of using this blank backing to make is less, shapes also extremely difficult.Enter after the nineties in last century, China develops out the applied powder metallurgy method and makes the molybdenum plate blank, and the technical quality level of molybdenum plate goods is greatly improved, and still has obvious gap but compare with west industrially developed country.Enter after 21st century, under the pulling that market demand sharp increase and external product pour in, the development of molybdenum in China slab material has obtained a lot of important breakthroughs, scientific and technological achievement and patented technology also continue to bring out, but be mixed at selection group material proportioning, powder homogeneous, technical obvious deficiency or the weakness of still existing of key core such as base substrate press forming.The molybdenum plate blank that the existing backing molybdenum-base alloy sheet material of China uses, ubiquity capability and performance defectives such as the constituent element distributing homogeneity is relatively poor, material density is less, mechanical and physical performance is lower, surface quality is coarse, internal soundness hidden danger is more, and the needed molybdenum plate blank of the big performance molybdenum-base alloy sheet material with a high standard ability of making that provides of producing in batches particularly also is not provided at present; This present situation can not adapt to Chinese national economy high speed development needs far away, causes the needed big performance molybdenum-base alloy sheet material with a high standard of a lot of high-technology fields to be had to from external a large amount of imports.
Body formation is the core key technology link of the big performance molybdenum-base alloy slab material with a high standard of preparation; China prepares molybdenum-base alloy slab material at present, most enterprises all select to adopt traditional static pressure such as liquid medium to suppress fine and close forming technique to carry out the body formation operation, earlier the molybdenum-base alloy powder being packed into, the jolt ramming colligation is shaped in the elastomeric flexible shaping die sleeve, again die sleeve is put into the steel body airtight container of liquid medium hydrostatic pressing machine, with high-pressure hydraulic pump the liquid medium brute force is compressed into steel body airtight container then, make liquid medium in steel body airtight container, form balanced powerful hydrostatic pressure, finish and carry out static pressure such as liquid medium and suppress fine and close forming operation being seated in the elastomeric flexible shaping die sleeve molybdenum-base alloy powder.Static pressure such as this liquid medium are suppressed fine and close forming technique, owing to select to use elastomeric flexible shaping die sleeve, be difficult to adapt to the tabular body characteristics of molybdenum plate blank, produce the shaping base substrate of molybdenum plate blank, generally all exist material defectives such as constituent element skewness, material density are not high, type quality is relatively poor, specification is less than normal in various degree, and also very easily have hidden danger of quality such as expansion, shrinkage porosite, interlayer, crackle in the shaping base substrate.
The utility model is according to the specification requirement condition of big specification powder metallurgy molybdenum base rare earth alloy slab material to body formation, applied powder metallurgy low temperature press forming technical know-how, take having low-temperature heat function shaping dies and having the powerful equilibrium of static pressure such as the bidirectional flexible functional liquid pressing system of exerting pressure and carry out the science coupling and be connected the integration technology measure, form and a kind ofly can carry out the fine and close horizontal bidirectional flexible hydraulic harder special technology equipment that is shaped of static pressure such as base substrate low temperature flexibility compacting to big specification powder metallurgy molybdenum base rare earth alloy slab material, can disposablely independently finish and be shaping base substrate technical operation overall process with the molybdenum-based rare-earth alloy powder compaction is fine and close.
Summary of the invention
The technical problems to be solved in the utility model:
The utility model generally all exists the constituent element skewness for the shaping base substrate that solves the existing molybdenum-base alloy slab material of China, material density is not high, type quality is relatively poor, specification is less than normal, and also very easily existence expansion in the shaping base substrate, shrinkage porosite, interlayer, deficiency and the weakness of material defectives such as crackle, take targetedly and will have low-temperature heat function shaping dies and have the powerful equilibrium of static pressure such as the bidirectional flexible functional liquid pressing system of exerting pressure and carry out the science coupling and is connected the integration technology measure, form disposable independently the finishing of a kind of energy the fine and close special technology for big quality shaping base substrate with a high standard of molybdenum-based rare-earth alloy powder compaction is equipped.
The technical scheme that the utility model technical solution problem is taked:
The technical problems to be solved in the utility model is intended taking research and design to go out a kind of horizontal bidirectional flexible hydraulic harder, is solved.
The horizontal bidirectional flexible hydraulic harder of the utility model research and design, according to powder metallurgy low temperature press forming technical know-how, the molybdenum-based rare-earth alloy powder is heated to 60～70 ℃, can in alloy powder, produce a kind of activation energy, mechanical interlocking and surface atom attraction between powder particle can be improved, when the fine and close operation of compacting, the shaping blank strength can be effectively increased; Can also improve the flowability of powder particle, when the fine and close operation of compacting, can effectively increase density and the homogeneous degree of shaping base substrate.The powder pressing substrate is because just can form neomorph after making powder particle all produce brittle fracture under external force.If to powder particle applied pressure deficiency, or pressure inequality, time are not enough, just may strain only take place some powder particle, also do not produce plastic deformation, more do not produce brittle fracture; After the pressure relief, the powder particle of strain only takes place in these, and bounce-back or reinstatement just might take place, and just may therefore produce material hidden danger such as expansion, shrinkage porosite, interlayer, crackle in the neomorph.Therefore the powder metallurgy pressing forming technique requires the powder particle applied pressure, must have enough technical characteristics such as powerful lasting, the balanced equivalent of all directions, guarantee that powder particle can be under the effect of press forming pressure, form neomorph again after all producing brittle fracture.The horizontal bidirectional flexible hydraulic harder of the utility model research and design, applied powder metallurgy low temperature press forming technical know-how, the shaping base substrate of making has characteristics such as constituent element is evenly distributed, material density is higher, the surface topography quality is bright and clean, specification is bigger, and can effectively avoid or reduce and have material hidden danger such as expansion, shrinkage porosite, interlayer, crackle in the shaping base substrate.
The horizontal bidirectional flexible hydraulic harder of the utility model research and design is made up of bed piece, shaping dies, hydraulic system; Shaping dies is fixed on the work top of bed piece, is connected with hydraulic system by left and right movable pressing board; The closely knit operation unit of left and right pressure of hydraulic system is fixed on respectively on the bed piece of shaping dies and arranged on left and right sides, is connected with shaping dies by left and right oil cylinder pressure head.
Described shaping dies is made up of left and right movable pressing board, pressing plate loose slot, cover plate, base, powder filling die cavity, position block, electric heating device, is fixed on by base on the work top of bed piece; Right movable pressing board is connected with right oil cylinder pressure head, and left movable pressing board is connected with left oil cylinder pressure head.Can change the volume that powder is loaded die cavity by the physical dimension of change shaping mould template and the installation site of position block, realize the specification variation of preparation shaping base substrate.
Described hydraulic system is formed the closely knit operation unit of dextrad pressure by right oil cylinder pressure head, right oil cylinder, right cylinder bracket, right oil cylinder oil pipe, is fixed on the bed piece by right cylinder bracket, is connected with the hydraulic operation control cabinet by right oil cylinder oil pipe; Form the closely knit operation unit of left-hand pressure by left oil cylinder pressure head, left oil cylinder, left cylinder bracket, left oil cylinder oil pipe, be fixed on the bed piece by left cylinder bracket, be connected with the hydraulic operation control cabinet by left oil cylinder oil pipe; The hydraulic operation control cabinet is fixed on by the bed piece, and hydraulic pressure components and parts such as motor, hydraulic oil container, gear oil pump, control valve, distributing valve, overflow valve, safety valve, Monitoring and Controlling instrument, manipulation control panel are housed.
Horizontal bidirectional flexible hydraulic harder at first by electric heating device, is heated to 60～70 ℃ with the molybdenum-based rare-earth alloy powder that is seated in the powder filling die cavity when carrying out the operation of low temperature flexibility hydrostatic pressing.Make left and right two oil cylinders all with the stable and uniform operating rate of 8mm/min and the powerful flexible working pressure of 300MPa then, promote the left and right movable pressing board of shaping dies with the pressure that is equal to and speed from left and right both direction, the molybdenum-based rare-earth alloy powder is applied forming pressure, fixed form around the shaping dies, under the impressed pressure effect, form the reaction force that equates with this pressure, exert pressure around the molybdenum-based rare-earth alloy powder simultaneously, each that makes that the molybdenum-based rare-earth alloy powder receives is to pressure general equilibrium equivalent.Left and right movable pressing board when the shaping mould, stop mobile when being advanced to the position block desired location, though left and right oil cylinder can not continue to advance, and still can keep the 300MPa operational pressure to continue to be applied on the molybdenum-based rare-earth alloy powder, and keeps voltage stabilizing 40min under this operational pressure.After reaching the 40min voltage stabilizing time, take to reduce pressure gradually stage by stage unloading pressure means: release speed is controlled all the time and is stabilized in 6MPa/min; Decompression is to 270MPa, voltage stabilizing 10min for the first time; Decompression is to 210MPa, voltage stabilizing 10min more for the second time; Decompression is to 120Mpa, voltage stabilizing 20min more for the third time; Press the release speed decompression of 6MPa/min for the 4th time, until cutting whole pressure.Carry out demoulding immediately, take out the fine and close shaping base substrate of big specification powder metallurgy molybdenum base rare earth alloy slab material compacting.
The advantage that the utlity model has and the effect that reaches:
1, the utility model is according to powder metallurgy low temperature press forming know-why, to have low-temperature heat function shaping dies with have the powerful equilibrium of static pressure such as bidirectional flexible exert pressure the hydraulic system of function carry out the science coupling is connected integrate design after, form horizontal bidirectional flexible hydraulic base machine special technology equipment, any bonding agent can not added, under the lubricant condition, can disposable molybdenum-based rare-earth alloy powder low temperature compacting densification be the shaping base substrate, be powder metallurgy industry press forming technical equipment field, increase new varieties, a kind of new method is provided, to the development and progress of powder metallurgy forming technology, have certain inspiration and reference function.
2, the utility model is at tabular body characteristics and the specification requirement condition of molybdenum plate blank, research and design goes out low-temperature heat targetedly, the balanced equivalent of two-way brute force is exerted pressure, long-time high voltage stabilizing, multinomial original creation technical measures such as release stage by stage gradually reduce pressure, make the shaping base substrate of making have the pressurized general equilibrium, constituent element is evenly distributed, material density is higher, specification is bigger, characteristics such as the surface topography quality is better, solved preferably very easily to exist in the shaping base substrate that using liquid medium equal pressing forming technology makes and expanded, shrinkage porosite, interlayer, the technical barrier of material defectives such as crackle has preferably and promotes, demonstration is worth.
3, the utility model horizontal bidirectional flexible hydraulic harder, it is a kind of low-temperature heat, die forming, hydraulic pressure special technology equipment of new and high technology such as exert pressure that integrates, possess skills advanced person, complete function, manipulation easily, characteristics such as dependable performance, the special technical requirement that can adapt to powder metallurgy industry plate shape body formation, have vast market space and development potentiality, can create favorable economic benefit and social benefit.
Description of drawings
Accompanying drawing 1: horizontal bidirectional flexible hydraulic harder structural principle schematic diagram.
The specific embodiment
The structural configuration embodiment:
As shown in Figure 1, horizontal bidirectional flexible hydraulic harder is made up of bed piece (1), shaping dies, hydraulic system; Shaping dies is fixed on the work top (15) of bed piece (1), is connected with hydraulic system by left and right movable pressing board (11,6); The closely knit operation unit of left and right pressure of hydraulic system is fixed on respectively on the bed piece (1) of shaping dies and arranged on left and right sides, is connected with shaping dies by left and right oil cylinder pressure head (12,7).
As shown in Figure 1, shaping dies, formed by right movable pressing board (6), left movable pressing board (11), pressing plate oriented movable groove (5), cover plate (8), base (9), powder filling die cavity (10), position block, electric heating device, be fixed on the work top (15) of bed piece (1); Right movable pressing board (6) is connected with right oil cylinder pressure head (7), and left movable pressing board (11) is connected with left oil cylinder pressure head (12).By the physical dimension of change shaping mould template and the installation site of position block, change the volume that powder is loaded die cavity (10), realize the specification variation of preparation molding blank.
As shown in Figure 1, hydraulic system, form the closely knit operation unit of dextrad pressure by right oil cylinder pressure head (7), right oil cylinder (4), right cylinder bracket (3), right oil cylinder oil pipe (2), be fixed on the bed piece (1) by right cylinder bracket (3), be connected with hydraulic operation control cabinet (17) by right oil cylinder oil pipe (2); Form the closely knit operation unit of left-hand pressure by left oil cylinder pressure head (12), left oil cylinder (14), left cylinder bracket (13), left oil cylinder oil pipe (16), be fixed on the bed piece (1) by left cylinder bracket (13), be connected with hydraulic operation control cabinet (17) by left oil cylinder oil pipe (16); Hydraulic operation control cabinet (17) is fixed on bed piece (1) side, and hydraulic pressure components and parts such as motor, hydraulic oil container, gear oil pump, control valve, distributing valve, overflow valve, safety valve, Monitoring and Controlling instrument, manipulation control panel are housed.
Operation operation embodiment:
Use horizontal bidirectional flexible hydraulic harder, the molybdenum-based rare-earth alloy powder carried out static pressure such as low temperature flexibility is suppressed fine and close forming operation program and the running technology parameter is:
---according to the concrete specification requirement of big specification powder metallurgy molybdenum base rare earth alloy slab material products to aspects such as density, net weight, shape, specifications, take into full account factors such as consumption in hydrostatic pressing and sintering type-approval process, scaling loss, shaping porosity, sintering shrinkage, accurately calculate the concrete weight of molybdenum-based rare-earth alloy powder of loading die cavity (10) planted agent filling at powder.According to result of calculation, by the electronic-weighing meter of configuration, the molybdenum-based rare-earth alloy powder carried out Weighing after, the powder of packing into is loaded the interior jolt ramming of die cavity (10).
---start the electric heating device in the shaping dies, the molybdenum-based rare-earth alloy powder that will be seated in the powder filling die cavity (10) is heated to 60～70 ℃.
---finish primer fluid pressing system after the low-temperature heat operation, make left and right two oil cylinders (14,4) all with the operating rate of 8mm/min and the operating pressure of 300MPa, left and right movable pressing board (11,6) from left and right both direction promotion shaping dies applies powerful balanced forming pressure to the molybdenum-based rare-earth alloy powder that is seated in the powder filling die cavity (10); Fixed form around the shaping dies forms the reaction force that equates with this pressure under the impressed pressure effect, exert pressure all around to the molybdenum-based rare-earth alloy powder simultaneously, make that the molybdenum-based rare-earth alloy powder receives respectively to pressure general equilibrium equivalent.
---when the left and right movable pressing board (11,6) of shaping mould stops mobile when being advanced to the position block desired location, left and right oil cylinder (14,4) is though can not continue to advance, but still can keep the 300MPa operational pressure to continue to be applied on the molybdenum-based rare-earth alloy powder, and under this operational pressure voltage stabilizing 40min.
---reach the 40min voltage stabilizing time after, take to reduce pressure gradually stage by stage unloading pressure means: release speed is controlled all the time and is stabilized in 6MPa/min; Decompression is to 270MPa, voltage stabilizing 10min for the first time; Decompression is to 210MPa, voltage stabilizing 10min more for the second time; Decompression is to 120Mpa, voltage stabilizing 20min more for the third time; Press the release speed decompression of 6MPa/min for the 4th time, until cutting whole pressure.
---demoulding, take out the fine and close molding blank of big specification powder metallurgy molybdenum base rare earth alloy slab material compacting.
Claims (3)
1. horizontal bidirectional flexible hydraulic harder, it is characterized in that: this horizontal bidirectional flexible hydraulic harder comprises bed piece (1), shaping dies, hydraulic system; Shaping dies is fixed on the work top (15) of bed piece (1), is connected with hydraulic system by left and right movable pressing board (11,6); The closely knit operation unit of left and right pressure of hydraulic system is fixed on respectively on the bed piece (1) of shaping dies and arranged on left and right sides, is connected with shaping dies by left and right oil cylinder pressure head (12,7).
2. a kind of horizontal bidirectional flexible hydraulic harder according to claim 1, it is characterized in that: described shaping dies, formed by right movable pressing board (6), left movable pressing board (11), pressing plate oriented movable groove (5), cover plate (8), base (9), powder filling die cavity (10), position block, electric heating device, be fixed on by base (9) on the work top (15) of bed piece (1); Right movable pressing board (6) is connected with right oil cylinder pressure head (7), and left movable pressing board (11) is connected with left oil cylinder pressure head (12); By the physical dimension of change shaping mould template and the installation site of position block, change the volume that powder is loaded die cavity (10), realize the specification variation of preparation molding blank.
3. a kind of horizontal bidirectional flexible hydraulic harder according to claim 1, it is characterized in that: described hydraulic system, form the closely knit operation unit of dextrad pressure by right oil cylinder pressure head (7), right oil cylinder (4), right cylinder bracket (3), right oil cylinder oil pipe (2), the closely knit operation unit of this dextrad pressure is fixed on the bed piece (1) by right cylinder bracket (3), is connected with hydraulic operation control cabinet (17) by right oil cylinder oil pipe (2); Form the closely knit operation unit of left-hand pressure by left oil cylinder pressure head (12), left oil cylinder (14), left cylinder bracket (13), left oil cylinder oil pipe (16), the closely knit operation unit of this left-hand pressure is fixed on the bed piece (1) by left cylinder bracket (13), is connected with hydraulic operation control cabinet (17) by left oil cylinder oil pipe (16); Hydraulic operation control cabinet (17) is fixed on bed piece (1) side, motor, hydraulic oil container, gear oil pump, control valve, distributing valve, overflow valve, safety valve, Monitoring and Controlling instrument is housed, handles control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220729881 CN203044895U (en) | 2012-12-27 | 2012-12-27 | Horizontal type bi-directional flexible hydraulic compacting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220729881 CN203044895U (en) | 2012-12-27 | 2012-12-27 | Horizontal type bi-directional flexible hydraulic compacting machine |
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| CN203044895U true CN203044895U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220729881 Expired - Fee Related CN203044895U (en) | 2012-12-27 | 2012-12-27 | Horizontal type bi-directional flexible hydraulic compacting machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894606A (en) * | 2012-12-27 | 2014-07-02 | 四平市天阔换热设备有限公司 | Horizontal type bidirectional flexible hydraulic blank pressing machine |
| CN105014067A (en) * | 2014-05-03 | 2015-11-04 | 四平市北威金属技术研发有限公司 | Hydraulic flexible warm-compaction near-net molding machine tool for powder metallurgy |
| CN115338404A (en) * | 2022-09-06 | 2022-11-15 | 厦门理工学院 | Method and device for axial bidirectional electromagnetic pulse pressing radial high-frequency heating forming |
-
2012
- 2012-12-27 CN CN 201220729881 patent/CN203044895U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894606A (en) * | 2012-12-27 | 2014-07-02 | 四平市天阔换热设备有限公司 | Horizontal type bidirectional flexible hydraulic blank pressing machine |
| CN105014067A (en) * | 2014-05-03 | 2015-11-04 | 四平市北威金属技术研发有限公司 | Hydraulic flexible warm-compaction near-net molding machine tool for powder metallurgy |
| CN115338404A (en) * | 2022-09-06 | 2022-11-15 | 厦门理工学院 | Method and device for axial bidirectional electromagnetic pulse pressing radial high-frequency heating forming |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20131227 |