CN114012060B - Method and device for preparing metal material by high-speed impact-fast condensation solidification - Google Patents
Method and device for preparing metal material by high-speed impact-fast condensation solidification Download PDFInfo
- Publication number
- CN114012060B CN114012060B CN202111187092.5A CN202111187092A CN114012060B CN 114012060 B CN114012060 B CN 114012060B CN 202111187092 A CN202111187092 A CN 202111187092A CN 114012060 B CN114012060 B CN 114012060B
- Authority
- CN
- China
- Prior art keywords
- molten metal
- pressure
- fast
- solidification
- speed impact
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2218—Cooling or heating equipment for dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
- B22D17/12—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled with vertical press motion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/32—Controlling equipment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Forging (AREA)
Abstract
The invention provides a method for preparing a metal material by high-speed impact-fast condensation solidification and a device for realizing the method, wherein the coupling condition for realizing the high-pressure and fast cold coupling solidification forming of molten metal is to control the extrusion specific pressure of a male die of the device on the molten metal to be within the range of 0.75-1.5 GPa and control the high-pressure-fast cold coupling cooling rate to be between 1000-2000K/s; the two condition coupling plays a complementary enhancing role in the solidification structure of the molten metal, effectively improves the structure appearance and the comprehensive performance of the metal material, and obtains a high-performance casting with the comprehensive performance superior to that of the casting under the traditional extrusion casting process condition. The invention is based on the spring energy storage high-speed pressing press, has simple modification and installation, simple and reliable structure and convenient maintenance, overcomes the problems of complex technology and high price of the existing high-speed pressing equipment, and is beneficial to the industrialization of the method for preparing the metal material by high-speed impact-fast condensation solidification.
Description
Technical Field
The invention relates to the technical field of metal material processing, in particular to metal liquid forming, and specifically relates to a method and a device for preparing a metal material through high-speed impact-fast condensation solidification.
Background
Liquid metal forming is an important forming process for processing metal materials. The extrusion casting process has the advantages of uniform and compact casting structure, excellent mechanical property, high surface finish and dimensional precision and the like because the molten metal is solidified under higher pressure, so that the extrusion casting process is widely applied to the fields of machinery, household appliances, aerospace, national defense and the like.
The traditional extrusion casting process is mainly used for forming metal materials under the conditions of lower specific pressure (25-150 MPa), lower cooling rate (1-5K/s) and the like. On the other hand, there are less involved fields in the studies of forming under conditions far from equilibrium, such as a specific pressure range of 0.75 to 1GPa, and under high-speed impact conditions. The impact solidification method allows the molten metal to be solidified away from the equilibrium condition. The extrusion specific pressure provided by the impact is far greater than the pressure provided by the conventional extrusion casting process, and a uniform supercooling degree independent of an external medium, namely a high-pressure quick-cooling coupling supercooling degree, can be formed, so that the aim of quick cooling is fulfilled. Chinese patent 201710231356.X, entitled "method and device for preparing metal material by high-pressure quick cooling", provides a feasible liquid forming method for preparing metal material by high-pressure quick cooling and a device for realizing the method. However, due to the structural limitation in practical application, the molten metal liquid is subjected to pressure solidification and quenching process machinery which are combined together, and the pressure solidification and the quenching process machinery cannot be carried out simultaneously, so that the improvement of the performance of the workpiece prepared by the method and the equipment thereof is not remarkable.
The invention discloses a Chinese patent 200910193527.X, which is named as a powder metallurgy high-speed pressing press machine based on mechanical spring energy storage, replaces the traditional high-speed pressing by utilizing equipment such as a high-pressure air gun and the like, greatly improves the wide applicability of a high-speed impact process, and solves the problems that the existing hydraulic high-speed pressing equipment is complex and expensive in technology and is not easy to be widely applied in the domestic metallurgical industry. However, this invention is only applicable to molding of powder materials.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a method for preparing a metal material by high-speed impact-fast condensation solidification aiming at the problem that the improvement can be improved in the prior art, so that the solidification forming of the coupling of two conditions of high pressure and fast cooling of molten metal liquid is realized, and a high-performance casting is obtained;
the invention also aims to provide a device for preparing the metal material by high-speed impact-fast condensation solidification, which is designed for the subsequent deep research and building platform.
The purpose of the invention is realized by the following measures:
a method for preparing metal material by high-speed impact-fast cooling solidification is characterized in that molten metal liquid coupled with two conditions of high pressure-fast cooling is solidified and formed, and the method specifically comprises the following steps and process conditions:
(1) Rapid cooling of molten metal by a male die
Preheating a die cavity, starting a male die cooler, pre-cooling the male die, and rapidly cooling molten metal by the male die through heat conduction of an external cooling medium;
after molten metal is poured into a die cavity of a die, adjusting the spring deformation of a device for preparing a metal material by high-speed impact-fast condensation solidification, wherein the adjustment range of the spring deformation is 70-100 mm;
(2) High-speed impact-fast cold coupling solidification molding of molten metal
Releasing a spring of the device for preparing the metal material by high-speed impact-fast condensation solidification, driving a pre-cooled male die to apply short-time high-speed impact pressure to the molten metal by the spring, controlling the extrusion specific pressure of the male die of the device for preparing the metal material by high-speed impact-fast condensation solidification on the molten metal to be within the range of 0.75-1.5 GPa, and controlling the cooling rate of high-pressure-fast cold coupling to be between 1000 and 2000K/s; at the moment, the high extrusion specific pressure and the high cooling rate meet the coupling condition, and the high-speed impact-fast condensation solidification molding of the molten metal is realized.
The method for preparing the metal material by high-speed impact-fast solidification further comprises the following steps:
and starting a data acquisition system while releasing the spring, acquiring real-time pressure parameters and temperature parameters of the molten metal liquid in the whole process, and transmitting the parameters to a signal processor to obtain a pressure-time relation curve and a temperature-time relation curve.
A device for preparing metal materials by high-speed impact-fast condensation solidification comprises a male die, a die cavity heat preservation heater, a die frame, a base plate, a thermocouple, an ejection cylinder head, a pressure sensor, a press punch and a data acquisition unit, and further comprises a male die cooler, a die cavity side ring, a die cavity bottom plate and a spring guide pillar; the die cavity consists of a cavity side ring and a cavity bottom plate, the die cavity is arranged on the die frame, the cavity heat-preservation heater is arranged outside the cavity side ring, the male die is arranged above the die cavity and is flexibly connected with a punch of a press machine through a spring guide pillar, the male die cooler is arranged outside the male die, and the substrate is fixedly arranged on a base plate of the press machine through bolts; the pressure sensor is arranged between the male die and the punch of the press machine.
The male die cooler is a cooling medium multi-circulation channel arranged around the male die, and a cooling medium inlet and a cooling medium outlet of the male die cooler are respectively connected with an external cooling system.
The temperature data acquisition channel for installing the thermocouple is arranged in the male die, and the thermocouple and the pressure sensor are connected with the signal processor.
Compared with the prior art, the invention has the following beneficial effects and outstanding advantages:
1. the invention provides a feasible liquid forming method for preparing a metal material by high-pressure rapid cooling and a device for realizing the method, which can realize the application of high extrusion specific pressure of more than 1GPa on molten metal; meanwhile, the temperature of the male die can be adjusted according to actual needs, the cooling system of the male die and the high-pressure-rapid-cooling coupling effect of the material are utilized to realize rapid cooling, the cooling system of the male die and the high-pressure-rapid-cooling coupling effect of the material play a complementary and reinforcing role on the solidification structure of the molten metal, the workpiece forming under the high-pressure-rapid-cooling coupling condition under the high-speed impact pressure is realized, the structure appearance and the comprehensive performance of the metal material are effectively improved, and a high-performance casting with the comprehensive performance superior to that under the traditional extrusion casting process condition is obtained.
2. The invention is provided with a data acquisition system, in the whole process flow, the pressure parameter and the temperature parameter are acquired by the data acquisition unit along with the change of time and the parameters are transmitted to the signal processor to obtain a pressure-time relation curve and a temperature-time relation curve, and a platform is set up for the subsequent deep exploration research; meanwhile, the method effectively improves the operation accuracy and is beneficial to the industrialization of the method for preparing the metal material by high-speed impact-fast condensation solidification.
3. According to the device for realizing the liquid forming method for preparing the metal material by high-pressure rapid cooling, the cavity has a definite geometric dimension, the device can be designed and modified according to actual requirements, and the prepared workpiece has a geometric dimension.
4. The device for realizing the liquid forming method for preparing the metal material by high-pressure rapid cooling is based on the spring energy-storage high-speed pressing press, is simple and easy to modify and install, simple and reliable in structure and convenient to maintain, overcomes the problems of complex technology and high price of the conventional high-speed pressing equipment, and is expected to be widely applied to the domestic metallurgical industry.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for preparing a metal material by high-speed impact-rapid solidification according to the present invention.
In the figure, 1 is a male die cooler, 2 is a male die, 3 is a cavity heat-preserving heater, 4 is a die frame, 5 is a base plate, 6 is a push-out cylinder head, 7 is a cavity side ring, 8 is a cavity bottom plate, 9 is molten metal, 10 is a thermocouple, 11 is a pressure sensor, 12 is a spring guide post, and 13 is a press punch.
Detailed Description
The present invention is further illustrated by the following examples in conjunction with the figures of the specification, but the embodiments of the present invention are not limited thereto.
A device for preparing metal materials by high-speed impact and fast condensation solidification is based on a spring energy storage high-speed pressing press and comprises a male die 2 of the spring energy storage high-speed pressing press, a die cavity, a cavity heat preservation heater 3, a die frame 4, a base plate 5, a thermocouple 10, an ejection cylinder head 6, a pressure sensor 11, a press punch 13 and a data acquisition unit. As shown in fig. 1, the device also comprises a male die cooler 1, a cavity side ring 7, a cavity bottom plate 8 and a spring guide post 12; the die cavity consists of a cavity side ring 7 and a cavity bottom plate 8, the die cavity is arranged on a die frame 4, a cavity heat-preservation heater 3 is arranged outside the cavity side ring 7, the male die 2 is arranged above the die cavity and is flexibly connected with a punch 13 of a press machine through a spring guide pillar 12, the male die cooler 1 is arranged outside the male die 2, and the substrate 5 is fixedly arranged on a base plate of the press machine through bolts; the pressure sensor 11 is disposed between the punch 2 and the press punch 13. The male die cooler 1 of the present embodiment is a cooling medium multi-circulation channel disposed around the male die 2, and the cooling medium inlet and outlet thereof are respectively connected to an external cooling system, which may be a cooling tank driven by an oil pump, or may be liquid nitrogen or the like.
In the embodiment, three thermocouples 10 are respectively arranged in three temperature data acquisition channels formed in the male die 2, and the thermocouples 10 and the pressure sensor 11 are connected with a signal processor.
The method for preparing the metal material by high-speed impact-fast condensation solidification comprises the following steps:
(1) And starting the cavity heat-preservation heater 3, preheating the cavity side ring 7, and enabling the temperature of the mold cavity to reach a set value of 250-350 ℃. The inner surfaces of the cavity side ring 7 and the cavity bottom plate 8 are lubricated by a lubricant.
(2) The male die cooler 1 is started to pre-cool the male die 2, the temperature of the male die 2 is set to reach a set value according to the principle that the heat conduction cooling rate rises along with the falling of the temperature of the male die, the range of the set value of the temperature of the male die 2 is 0-25 ℃, the corresponding heat conduction cooling rate is 100-500K/s, and the molten metal is rapidly cooled through the heat conduction of an external cooling medium.
(3) After molten metal is poured into a die cavity of a die, adjusting the spring deformation of a device for preparing a metal material by high-speed impact-fast condensation solidification, wherein the adjustment range of the spring deformation is 70-100 mm; the impact energy is regulated and controlled, so that the extrusion specific pressure is controlled to be in the range of 0.75-1.5 GPa.
(4) Releasing a spring of the device for preparing the metal material by high-speed impact-fast condensation solidification, driving a press punch 13 and the pre-cooled male die 2 in the step (2) to apply short-time high-speed impact pressure on the molten metal by the spring, controlling the extrusion specific pressure of the male die of the device for preparing the metal material by high-speed impact-fast condensation solidification on the molten metal to be within the range of 0.75-1.5 GPa, and controlling the high-pressure-fast-cold coupling cooling rate to be between 1000 and 2000K/s through the self-physical effect (namely, clausius-Calpeyron equation) of the material and the preset temperature of the male die; at the moment, the high extrusion specific pressure and the high cooling rate meet the coupling condition, the solidification molding of the molten metal liquid 9 under the coupling of the two conditions of high pressure and quick cooling is realized, the extrusion specific pressure of a male die of the device on the molten metal liquid is controlled within the range of 0.75-1.5 GPa, and the cooling rate of the high pressure-quick cooling coupling is controlled between 1000K/s and 2000K/s; the two conditions are coupled to play a complementary reinforcing role in the solidification structure of the molten metal liquid.
(5) Starting a data collector while releasing a spring of the device for preparing the metal material by high-speed impact-fast condensation solidification, collecting real-time pressure parameters and temperature parameters of the molten metal 9, and transmitting the obtained parameters to a signal processor in real time to obtain a pressure-time relation curve and a temperature-time relation curve;
(6) Operating the punch 13 of the press to ascend in a return stroke to drive the male die 2 to ascend and open the die cavity;
(7) The ejection cylinder head 6 of the press is operated to move upwards to drive the cavity bottom plate 8, and the solidified molten metal liquid 9 is ejected out of the die, so that a high-performance casting with comprehensive performance superior to that of the high-performance casting under the traditional extrusion casting process condition is obtained, and the high-performance casting with obviously improved microstructure appearance and performance is obtained.
Claims (2)
1. A method for preparing metal material by high-speed impact-fast cooling solidification is characterized in that molten metal liquid coupled with two conditions of high pressure-fast cooling is solidified and formed, and the method specifically comprises the following steps and process conditions:
(1) Rapid cooling of molten metal by a male die
Preheating a die cavity, starting a male die cooler at the same time, pre-cooling the male die, and realizing the rapid cooling of the molten metal liquid by the male die through the heat conduction of an external cooling medium;
after molten metal is poured into a die cavity, adjusting the spring deformation of a device for preparing the metal material by high-speed impact-fast condensation solidification, wherein the adjustment range of the spring deformation is 70-100 mm;
(2) High speed impact-fast cooling solidification forming of molten metal
Releasing a spring of a device for preparing the metal material by high-speed impact-fast condensation solidification, driving a pre-cooled male die to apply short-time high-speed impact pressure to molten metal by the spring, controlling the extrusion specific pressure of the male die to the molten metal to be within the range of 0.75-1.5 GPa, and controlling the high-pressure-fast cold coupling cooling rate to be between 1000 and 2000K/s; at the moment, the high extrusion specific pressure and the high cooling rate meet the coupling condition, and the high-speed impact-fast condensation solidification molding of the molten metal is realized.
2. The method for preparing a metal material by high-speed impact-fast solidification according to claim 1, further comprising:
and starting a data acquisition system while releasing the spring, acquiring real-time pressure parameters and temperature parameters of the molten metal liquid in the whole process, and transmitting the parameters to a signal processor to obtain a pressure-time relation curve and a temperature-time relation curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187092.5A CN114012060B (en) | 2021-10-12 | 2021-10-12 | Method and device for preparing metal material by high-speed impact-fast condensation solidification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187092.5A CN114012060B (en) | 2021-10-12 | 2021-10-12 | Method and device for preparing metal material by high-speed impact-fast condensation solidification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114012060A CN114012060A (en) | 2022-02-08 |
| CN114012060B true CN114012060B (en) | 2022-12-16 |
Family
ID=80055712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111187092.5A Active CN114012060B (en) | 2021-10-12 | 2021-10-12 | Method and device for preparing metal material by high-speed impact-fast condensation solidification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114012060B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708550A (en) * | 2009-10-30 | 2010-05-19 | 华南理工大学 | Press for high-speed pressing of powder metallurgy on basis of mechanical spring energy storage |
| CN107159867A (en) * | 2017-04-11 | 2017-09-15 | 华南理工大学 | High pressure rapid cooling prepares the method and device of metal material |
| CN108889922A (en) * | 2018-08-21 | 2018-11-27 | 西南大学 | A kind of the compound of high-performance wrought magnesium alloy prepares mold |
| CN211516031U (en) * | 2019-12-25 | 2020-09-18 | 苏州瑞华精密机械有限公司 | Die-casting die for metal |
| CN214235895U (en) * | 2020-09-29 | 2021-09-21 | 苏州顺帆五金电器有限公司 | Hot stamping forming die with quick cooling function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030141033A1 (en) * | 2002-01-31 | 2003-07-31 | Tht Presses Inc. | Semi-solid molding method |
-
2021
- 2021-10-12 CN CN202111187092.5A patent/CN114012060B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708550A (en) * | 2009-10-30 | 2010-05-19 | 华南理工大学 | Press for high-speed pressing of powder metallurgy on basis of mechanical spring energy storage |
| CN107159867A (en) * | 2017-04-11 | 2017-09-15 | 华南理工大学 | High pressure rapid cooling prepares the method and device of metal material |
| CN108889922A (en) * | 2018-08-21 | 2018-11-27 | 西南大学 | A kind of the compound of high-performance wrought magnesium alloy prepares mold |
| CN211516031U (en) * | 2019-12-25 | 2020-09-18 | 苏州瑞华精密机械有限公司 | Die-casting die for metal |
| CN214235895U (en) * | 2020-09-29 | 2021-09-21 | 苏州顺帆五金电器有限公司 | Hot stamping forming die with quick cooling function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114012060A (en) | 2022-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105014045B (en) | A kind of Compound Extrusion casting method of magnesium alloy special-shaped part | |
| CN104550876B (en) | A kind of automotive hub supercharging Casting Equipment and casting method | |
| CN103736894A (en) | Isothermal forging die and forging technology thereof of magnesium alloy die forge piece of step type structure | |
| CN101934336B (en) | Method and device for semi-solid precision rheo-casting of light alloys | |
| CN107159867B (en) | High pressure rapid cooling prepares the method and device of metal material | |
| CN102294478A (en) | Precise spray forming device and method for realizing quick mould manufacturing by same | |
| CN103909267B (en) | Based on semi-solid-state metal powder forming device and the manufacturing process of ultrasonic vibration | |
| CN104014760A (en) | Die-casting die capable of preventing shrinkage cavity of casting and die-casting technique thereof | |
| CN104439159A (en) | Compound liquid forging squeeze casting equipment | |
| CN109092957B (en) | Local thixoextrusion method for shaft sleeve part | |
| CN111112533B (en) | Hot forging die with internal cooling function and cooling method thereof | |
| CN114012060B (en) | Method and device for preparing metal material by high-speed impact-fast condensation solidification | |
| CN109773152A (en) | Multiple feed casting forging Integral molding device for insoles and method | |
| CN115041636B (en) | Extrusion casting forming die for magnesium alloy hub | |
| CN109420750A (en) | A kind of aluminium alloy car fore sub frame metal-mold low-pressure casting mold | |
| CN108941412B (en) | GH4037 cake class part semisolid-solid union precision forging device and method | |
| CN208528052U (en) | A kind of shaping dies of shaft sleeve parts part thixoextruding | |
| CN204449261U (en) | Composite liquefied die forging extrusion casting apparatus | |
| CN109622835A (en) | A kind of casting forging of Model For The Bush-axle Type Parts is compounded to form device | |
| CN205673565U (en) | The magnesium alloy vehicle wheel extrusion casint shaping dies improved | |
| CN108994272A (en) | A kind of pressure casting method of die casting | |
| CN104985159B (en) | A kind of die casting equipment and method for producing refractory metal coating ceramic chip material | |
| CN203330374U (en) | Knockout oil channel of cold chamber die casting machine | |
| CN108262434B (en) | A kind of increment die-forging forming method towards aluminium alloy slab | |
| CN108838312B (en) | Forging die |
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 |