CN110394392A - It is a kind of based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method - Google Patents
It is a kind of based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method Download PDFInfo
- Publication number
- CN110394392A CN110394392A CN201910505204.3A CN201910505204A CN110394392A CN 110394392 A CN110394392 A CN 110394392A CN 201910505204 A CN201910505204 A CN 201910505204A CN 110394392 A CN110394392 A CN 110394392A
- Authority
- CN
- China
- Prior art keywords
- control system
- plate
- temperature
- forming limit
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B21D26/021—Deforming sheet bodies
-
- 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
- B21D26/021—Deforming sheet bodies
- B21D26/027—Means for controlling fluid parameters, e.g. pressure or temperature
-
- 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
- B21D26/021—Deforming sheet bodies
- B21D26/031—Mould construction
Abstract
It is a kind of based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method be using fluid media (medium) as power transmission carrier, by the preform under room temperature with high temperature eventually forming combine, study complex diversion systen under Forming Limit of Sheet Metals.Is defined as: plate is pressed among mold by initial cold preform stage, upper mold downlink and lower die closure, and hydraulic control system adjusts the working pressure of liquid chamber fluidP, constant, the different amount of plastic deformation of realization plate of sealing device guarantee working pressure；High temperature end shaping stage, hydraulic control system is to liquid chamber pressure pressure release, the plastic deformation of reserved materials.Then, the heating device in upper mold is controlled by temperature control system, realizes the controllable adjustment of mold temperature, guarantee the consistency of plate and mold temperature.Continue larger fluid pressure, fracture failure, off-test occur for material.Predeformation amounth 0And heating temperatureTSummary to the affecting laws of different materials forming limit, the exploitation to new material and new process, has broad application prospects.
Description
Technical field
The invention belongs to metal sheet forming limit technology fields, and work is coupled with flow field more particularly to a kind of ermal physics field
With the research method of lower Forming Limit of Sheet Metals.
Background technique
Due to the needs of environmental protection and energy-saving and emission-reduction, the lightweight of automobile has become the main trend of world car development,
Realizing the approach mainly includes structure lightened, light material and integration requirement etc., and wherein lightweight metal material is main
Solution, be both able to achieve the mitigation of weight, and in turn ensured enough use intensities, the life of people is greatly protected to pacify
Entirely.But the defects of most of lightweight metal materials exist at normal temperature that plasticity is poor, forming limit is low, resilience is big, it utilizes
Traditional forming technology is unable to satisfy the requirement of materials expectations deflection.Therefore, from improvement material inside organization and stress
Angle is set out, and many scholars have conducted extensive research novel forming technology.
Liquid-filling shaping technology is come into being as a kind of flexible forming process.Liquid-filling shaping technique is using high-pressure fluid as biography
Power media replaces rigid punch-pin or cavity plate, makes original blank under the effect of uniform fluid high-pressure while being plastically deformed,
The mold that finally reclines completes final forming.Liquid-filling shaping technique makes because of the mechanism of action of " fluid lubrication " and " frictionally holding "
Obtain the distinguishing features such as final products have good surface quality, deformation uniform force, resilience is small, forming limit is high.However, having
A little special difficult deformation lightweight metal materials, still can not significantly improve its deformation limit just with liquid-filling shaping, in conjunction with height
The good feature of the lower material Deformation Flow of temperature, therefore be more and more combined into what liquid-filling shaping combined with hot forming
Shape technique further is suggested.Wherein, the deflection of liquid-filling shaping and the temperature of hot forming are in the combined shaping
Two key process parameters, the different process combining form of the two will will affect the final deformability of material, with forming limit
Amount is characterized.For different materials, under both identical combining form, it is poor that final forming limit can also exist
It is different.These problems not only will affect the formulation of concrete technology route, while also will affect the comprehensive utilization ratio of material.
Summary of the invention
To solve the above-mentioned problems, forming limit can be improved using liquid-filling shaping the purpose of the present invention is to provide a kind of
It is more to be shaped the heat-stream combined by the features such as good with material plastic flow under hot environment eventually with high temperature for room temperature preform
The Forming Limit of Sheet Metals research method of field coupling.
In order to achieve the above object, provided by the invention a kind of based on the research of heat-stream multi- scenarios method Forming Limit of Sheet Metals
Method includes the following steps: in order
1) heat control system and hydraulic control system are docked with the spare interface of general control system respectively, then carries out idle condition
Under system debug, guarantee that normal adjustable function may be implemented in each system.
2) plate is placed in lower die, operation general control system is to realize the execution of hydraulic control system.Hydraulic control system warp
Fluid media (medium) is passed through into liquid chamber from the oil inlet in lower die, fluid media (medium) is full of liquid chamber and plate following table face contact, hydraulic control system
System suspends, at this time liquid chamber pressurePIt is 0, sealing ring is mounted in the seal groove of upper mold.During the test, high-pressure-resistant sealed circle
It can guarantee liquid chamber pressure valuePIt is invariable.
3) upper mold is molded according to the speed of service downlink of setting.Because the liquid-filling shaping is active forming mode,
So hydraulic press applies forming force by way of controlling pressure-pad-forceFTo upper mold, guarantee plate is pressed in forming process,
It among lower mold, does not move, to ensure that pure bulging deformation is occurred by two-way tensile stress state for plate.Hydraulic control system
Continue to be passed through high-pressure fluid into liquid chamber, by the pressure value that high-pressure fluid medium is arrangedP, realize plate at the beginning of the preform stage
Beginning deflectionh 0Controllable adjustment.
4) heating units such as heating tube or heater strip are installed in upper mold, after predeformation at room temperature, hydraulic control system
System carries out pressure release, the plastic deformation of reserved materials to liquid chamber.It manipulates heat control system (heating furnace, temperature controller etc.) and realizes heating unit
Temperature adjust, to control the temperature of upper moldT, make the plate in adjustable temperature range that there is good plastic formability.
Soaking time is set, the temperature of plate temperature and upper mold is consistent, then adjusts hydraulic control system and continues to be passed through height to liquid chamber
Fluid media (medium) is pressed, liquid chamber pressure is increasedP, realize bursting for plate.Because under hot environment, the Deformation Flow performance of material is obtained
Very big improvement, while the influence of preform stage process hardening is considered, to realize complicated in heat-stream multi- scenarios method technique
Forming Limit of Sheet Metals research under strain paths.
5) adjust hydraulic control system unloading Fluid pressure and be down to 0, adjust heat control system and stop heating to upper mold, make upper mold with
The temperature of plate is down to room temperature.The die sinking of upper mold uplink, takes out plate, off-test.By subsequent data processing, obtain different
Sheet Metal Forming Limit under combination of process parameters.
It is provided by the invention it is a kind of based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method made with fluid media (medium)
For power transmission carrier, by the preform under room temperature, with high temperature, forming is combined eventually, studies the sheet material forming pole under complex diversion systen
Limit.Is defined as: plate is pressed among mold by initial cold preform stage, upper mold downlink and lower die closure, hydraulic control system tune
Liquid chamber fluid operating pressure value is saved, sealing device guarantees the constant of working pressure, realizes the different amount of plastic deformation of plate；It is high
Warm end shaping stage, hydraulic control system is to liquid chamber pressure pressure release, the plastic deformation of reserved materials.Then, it is controlled by temperature control system
Heating device in upper mold realizes mold temperatureTControllable adjustment, guarantee plate and mold temperature consistency.Continue to increase
Fluid pressure, test mould and each control system form closed loop, ensure that the company of cold predeformation Yu high temperature end formed composite process
Continuous property.Heating temperature in the forming limit research methodTAnd predeformation amounth 0The diversity of coupled mode enriches material along multiple
Miscellaneous strain paths make the forming limit research under the combination process have reference value there is a situation where being plastically deformed.The forming
Predeformation amount in limit research methodh 0And heating temperatureTDouble influence factor is to the affecting laws of different materials forming limit
It summarizes, the exploitation to new material and new process has broad application prospects.
Former of the support based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method provided by the invention, it is real
The automation for having showed each control system and test mould is adjusted, and forms closed-loop control response circuit, ensure that cold predeformation and height
The stability of the warm multiple physical field compound working procedure of forming eventually.
Detailed description of the invention
Fig. 1 is provided by the invention based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method schematic illustration.
Fig. 2 is provided by the invention based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method room temperature preform rank
Section schematic diagram.
Fig. 3 is provided by the invention based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method high temperature end forming rank
Section schematic diagram.
In figure: 1- general control system, 2- heat control system, 3- hydraulic control system, 4- oil inlet, 5- lower die, 6- lower die liquid chamber, 7-
Sealing ring, 8- upper mold, 9- plate, 10- heating unit.
Specific embodiment
In the following with reference to the drawings and specific embodiments to provided by the invention a kind of based on heat-stream multi- scenarios method sheet material forming
Limit research method is described in detail.
It is provided by the invention a kind of based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research side as shown in Fig. 1-Fig. 3
Method includes the following steps carried out in sequence:
1) heat control system 2 and hydraulic control system 3 are docked with the spare interface of general control system 1 respectively, is then carried out unloaded
Under the conditions of system debug, guarantee that normal adjustable function may be implemented in each system.
2) plate 9 is placed in lower die 5, operation general control system 1 is to realize the execution of hydraulic control system 3.Hydraulic control system
System 3 is passed through fluid media (medium) into liquid chamber 6 via the oil inlet 4 in lower die 5, and fluid media (medium) connects full of liquid chamber 6 with 9 lower surface of plate
Touching, hydraulic control system 3 suspend, at this time liquid chamber pressurePIt is 0, sealing ring 7 is mounted in the seal groove of upper mold 8.During the test,
High-pressure-resistant sealed circle can guarantee liquid chamber pressure valuePIt is invariable.
3) upper mold 8 is molded according to the speed of service downlink of setting.Because the liquid-filling shaping is active forming side
Formula, so hydraulic press applies forming force by way of controlling pressure-pad-forceFTo upper mold 8, guarantee that plate is pressed in forming process
It among upper and lower mold, does not move, to ensure that pure bulging deformation is occurred by two-way tensile stress state for plate.Hydraulic control
System 3 continues to be passed through high-pressure fluid into liquid chamber 6, by the pressure value that high-pressure fluid medium is arrangedP, realize plate in preform
Stage initial deformation amounth 0Controllable adjustment.
4) heating units such as heating tube or heater strip 10 are installed in upper mold 8, after predeformation at room temperature, hydraulic control
System 3 carries out pressure release, the plastic deformation of reserved materials to liquid chamber.It manipulates heat control system (heating furnace, temperature controller etc.) 2 and realizes heating
The temperature of unit 10 is adjusted, to control the temperature of upper mold 8, make in adjustable temperature range plate have good plasticity at
Shape.Soaking time is set, plate temperature and the temperature of upper mold 8 are consistent, then adjusts hydraulic control system 3 and continues to liquid chamber
6 are passed through high-pressure fluid medium, increase liquid chamber pressureP, realize bursting for plate.Since under hot environment, the Deformation Flow of material
Performance is greatly improved, while considering the influence of preform stage process hardening, to realize heat-stream multi- scenarios method work
Forming Limit of Sheet Metals research in skill under complex diversion systen.
5) it adjusts the unloading of hydraulic control system 3 Fluid pressure and is down to 0, adjust heating of the stopping of heat control system 2 to upper mold 8, make
The temperature of mould 8 and plate 9 is down to room temperature.The die sinking of 8 uplink of upper mold, takes out plate 9, off-test.By subsequent data processing,
Obtain the Sheet Metal Forming Limit under different technical parameters combination.
Claims (5)
1. a kind of based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method, it is characterised in that: the multi- scenarios method ring
The new method that Forming Limit of Sheet Metals is studied under border includes the following steps carried out in order:
1) heat control system 2 and hydraulic control system 3 are docked with the spare interface of general control system 1 respectively, is then carried out unloaded
Under the conditions of system debug, guarantee that normal adjustable function may be implemented in each system；
2) plate 9 is placed in lower die 5, operation general control system 1 is to realize the execution of hydraulic control system 3；Hydraulic control system 3 passes through
Fluid media (medium) is passed through into liquid chamber 6 from the oil inlet 4 in lower die 5, fluid media (medium) is full of liquid chamber 6 and 9 following table face contact of plate, liquid
Control system 3 is suspended, at this time liquid chamber pressurePIt is 0, sealing ring 7 is mounted in the seal groove of upper mold 8；During the test, high pressure resistant
Sealing ring can guarantee liquid chamber pressure valuePIt is invariable；
3) upper mold 8 is molded according to the speed of service downlink of setting；Because the liquid-filling shaping is active forming mode, institute
In a manner of through control pressure-pad-force, hydraulic press applies forming forceFTo upper mold 8, guarantee that plate is pressed on above and below in forming process
It among mold, does not move, to ensure that pure bulging deformation is occurred by two-way tensile stress state for plate；Hydraulic control system 3
Continue to be passed through high-pressure fluid into liquid chamber 6, by the pressure value that high-pressure fluid medium is arrangedP, realize plate in the preform stage
Initial deformation amount occursh 0Controllable adjustment；
4) heating units such as heating tube or heater strip 10 are installed in upper mold 8, after predeformation at room temperature, hydraulic control system
3 pairs of liquid chambers carry out pressure release, the plastic deformation of reserved materials；It manipulates heat control system (heating furnace, temperature controller etc.) 2 and realizes heating unit
10 temperature is adjusted, to control the temperature of upper mold 8T, make the plate in adjustable temperature range that there is good Plastic Forming
Property；Soaking time is set, plate temperature and the temperature of upper mold 8 are consistent, then adjusts hydraulic control system 3 and continues to liquid chamber 6
It is passed through high-pressure fluid medium, increases liquid chamber pressureP, realize bursting for plate；Since under hot environment, the Deformation Flow of material
It can be greatly improved, while consider the influence of preform stage process hardening, to realize heat-stream multi- scenarios method technique
Forming Limit of Sheet Metals research under middle complex diversion systen；
5) adjust hydraulic control system 3 and unload liquid chamber pressure and be down to 0, adjust heat control system 2 and stop heating to upper mold 8, make upper mold 8 with
The temperature of plate 9 is down to room temperature；The die sinking of 8 uplink of upper mold, takes out plate 9, off-test；By subsequent data processing, obtain
Sheet Metal Forming Limit under different technical parameters combination.
2. according to claim 1 based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method, it is characterised in that:
The Forming Limit of Sheet Metals research method of entire heat-stream multi- scenarios method is using liquid-filling shaping technique as technical background；Because of high-pressure spray
Body medium is instantaneous and is uniformly applied to that plate per unit system is upward, and plate is under two-way action of pulling stress, and uniformly, rebound becomes for deformation
Gesture is small, and the material forming limit further gets a promotion, more meaningful for the research of the material forming limit.
3. according to claim 1 based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method, it is characterised in that:
Test mould and each control system form closed loop, ensure that the continuity of cold predeformation Yu high temperature end formed composite process.
4. according to claim 1 based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method, it is characterised in that:
The randomness setting of heating temperature and predeformation amount may be implemented in heat control system and hydraulic control system, makes plate that different complexity occur and answers
The deformation for becoming path, increases the diversity of experimental condition, to expand grinding for the material forming limit under the combination process
Study carefully range.
5. according to claim 1 based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method, it is characterised in that:
The arbitrarily coupling of predeformation amount and heating temperature double influence factor is studied to the affecting laws of different materials forming limit, is summarized
Deformation limit of the different materials in every kind of process combination, is conducive to the exploitation of new material and new process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910505204.3A CN110394392B (en) | 2019-06-12 | 2019-06-12 | Board forming limit research method based on heat-flow multi-field coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910505204.3A CN110394392B (en) | 2019-06-12 | 2019-06-12 | Board forming limit research method based on heat-flow multi-field coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110394392A true CN110394392A (en) | 2019-11-01 |
| CN110394392B CN110394392B (en) | 2023-06-13 |
Family
ID=68323121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910505204.3A Active CN110394392B (en) | 2019-06-12 | 2019-06-12 | Board forming limit research method based on heat-flow multi-field coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110394392B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB388998A (en) * | 1932-07-22 | 1933-03-09 | Us Pipe & Foundry Company | Improvements in or relating to methods of modifying internal strains in metal objects |
| CN102284588A (en) * | 2011-06-13 | 2011-12-21 | 北京航空航天大学 | Device for improving forming limit of plate |
| CN102607969A (en) * | 2012-03-20 | 2012-07-25 | 哈尔滨工业大学 | Device and method for testing forming limit of sheet material in three-dimensional stress state |
| CN103398909A (en) * | 2013-08-05 | 2013-11-20 | 大连理工大学 | Method for acquiring metal temperature forming limit diagram (TFLD) and testing device therefor |
| CN203502309U (en) * | 2013-08-05 | 2014-03-26 | 大连理工大学 | TFLD (Temperature Forming Limit Diagram) testing device for high-temperature warm and hot forming limit of metal |
| CN104239644A (en) * | 2014-09-22 | 2014-12-24 | 无锡市新峰管业股份有限公司 | Researching method for hydraulic forming technical parameters of titanium T-shaped pipe |
| CN106734499A (en) * | 2016-12-01 | 2017-05-31 | 湘潭大学 | Sheet material warms electro-hydraulic high speed impact quasistatic hydraulic pressure compound molding device and the sheet material forming method realized using the device |
| CN107971382A (en) * | 2017-11-23 | 2018-05-01 | 北京航空航天大学 | It is a kind of to can be used for panel stiffness mould bulging and the device and method of hydraulic bulge test |
| CN108279177A (en) * | 2018-03-13 | 2018-07-13 | 大连理工大学 | A kind of hot press-formed go-no-go test equipment of high temperature and high speed sheet metal and test method |
| CN108723161A (en) * | 2017-07-10 | 2018-11-02 | 北京航空航天大学 | A kind of large aluminum alloy complex structural member cold-hot sequence coupling forming technology |
| CN108801801A (en) * | 2018-06-15 | 2018-11-13 | 燕山大学 | A kind of assay method of sheet alloy hot forming limit curve |
-
2019
- 2019-06-12 CN CN201910505204.3A patent/CN110394392B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB388998A (en) * | 1932-07-22 | 1933-03-09 | Us Pipe & Foundry Company | Improvements in or relating to methods of modifying internal strains in metal objects |
| CN102284588A (en) * | 2011-06-13 | 2011-12-21 | 北京航空航天大学 | Device for improving forming limit of plate |
| CN102607969A (en) * | 2012-03-20 | 2012-07-25 | 哈尔滨工业大学 | Device and method for testing forming limit of sheet material in three-dimensional stress state |
| CN103398909A (en) * | 2013-08-05 | 2013-11-20 | 大连理工大学 | Method for acquiring metal temperature forming limit diagram (TFLD) and testing device therefor |
| CN203502309U (en) * | 2013-08-05 | 2014-03-26 | 大连理工大学 | TFLD (Temperature Forming Limit Diagram) testing device for high-temperature warm and hot forming limit of metal |
| CN104239644A (en) * | 2014-09-22 | 2014-12-24 | 无锡市新峰管业股份有限公司 | Researching method for hydraulic forming technical parameters of titanium T-shaped pipe |
| CN106734499A (en) * | 2016-12-01 | 2017-05-31 | 湘潭大学 | Sheet material warms electro-hydraulic high speed impact quasistatic hydraulic pressure compound molding device and the sheet material forming method realized using the device |
| CN108723161A (en) * | 2017-07-10 | 2018-11-02 | 北京航空航天大学 | A kind of large aluminum alloy complex structural member cold-hot sequence coupling forming technology |
| CN107971382A (en) * | 2017-11-23 | 2018-05-01 | 北京航空航天大学 | It is a kind of to can be used for panel stiffness mould bulging and the device and method of hydraulic bulge test |
| CN108279177A (en) * | 2018-03-13 | 2018-07-13 | 大连理工大学 | A kind of hot press-formed go-no-go test equipment of high temperature and high speed sheet metal and test method |
| CN108801801A (en) * | 2018-06-15 | 2018-11-13 | 燕山大学 | A kind of assay method of sheet alloy hot forming limit curve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110394392B (en) | 2023-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102284588B (en) | Device for improving forming limit of plate | |
| CN202390535U (en) | Continuous vacuum plating facility with heating device | |
| CN102248056A (en) | Method for improving sheet forming limit | |
| CN104162948A (en) | High-strength or low-plasticity material hollow member low pressure thermoforming apparatus and method thereof | |
| CN106746533B (en) | Pressurizing system for forming curved glass of mobile terminal | |
| CN110394392A (en) | It is a kind of based on heat-stream multi- scenarios method Forming Limit of Sheet Metals research method | |
| CN206357514U (en) | A kind of heating and heat-insulating device of vulcanizing press | |
| CN106277727A (en) | The continuous way having the toughened vacuum glass of bleeding point produces stove | |
| WO2024060624A1 (en) | Indirect thermoforming mold and method for aluminum alloy | |
| CN208087682U (en) | A kind of full automatic aluminium section bar aging furnace | |
| CN210089127U (en) | Hot air device of packaging laminating equipment | |
| CN209702559U (en) | A kind of glass tempering furnace | |
| CN109694182A (en) | A kind of 3D glass heat bender and its heat pressing forming device | |
| CN203878195U (en) | High-pressure air quenching chamber for push-disk aluminum alloy solid solution aging heat treatment | |
| CN203851369U (en) | Cold press dedicated to contact heat transfer type electric compressor | |
| CN208983008U (en) | A kind of quick charging system of COS | |
| CN208087470U (en) | A kind of glass bending integral type heating coldplate | |
| CN207103794U (en) | A kind of Room holding furnace of low pressure casting three with aluminium liquid suspension function | |
| CN203923463U (en) | A kind of crystal high-temperature annealing device continuously | |
| CN203031958U (en) | Foam-fixed hot melting device | |
| CN208012079U (en) | A kind of electric heater of cold-hot water separating | |
| CN205210457U (en) | Hot -pressing consolidation device | |
| CN206847403U (en) | A kind of fast cooling vacuum electric furnace | |
| CN208667469U (en) | A kind of annealing furnace of intelligent control heating | |
| CN210103753U (en) | Energy-conserving production line of toughened glass of waste gas utilization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |