CN114247767A - Magnesium alloy cooling constant-speed extrusion device and method - Google Patents
Magnesium alloy cooling constant-speed extrusion device and method Download PDFInfo
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- CN114247767A CN114247767A CN202111581805.6A CN202111581805A CN114247767A CN 114247767 A CN114247767 A CN 114247767A CN 202111581805 A CN202111581805 A CN 202111581805A CN 114247767 A CN114247767 A CN 114247767A
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- temperature
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- magnesium alloy
- extrusion
- base station
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- 238000001125 extrusion Methods 0.000 title claims abstract description 61
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 51
- 238000001816 cooling Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 40
- 230000017525 heat dissipation Effects 0.000 claims description 17
- 239000000110 cooling liquid Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
- B21C29/04—Cooling or heating of press heads, dies or mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/002—Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C31/00—Control devices, e.g. for regulating the pressing speed or temperature of metal; Measuring devices, e.g. for temperature of metal, combined with or specially adapted for use in connection with extrusion presses
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Extrusion Of Metal (AREA)
Abstract
A magnesium alloy cooling constant-speed extrusion device and a method thereof, which belong to the technical application field of mechanical devices and are used in the field of magnesium alloy profile extrusion, wherein the magnesium alloy cooling constant-speed extrusion device and the method are used for magnesium alloy profile extrusion, and the device comprises a main control box, a base station, a temperature control device, a multifunctional constant-temperature die carrier and a connecting high-pressure pipeline; and controlling through a preset program of the main control box. The invention effectively solves the practical problems of low extrusion efficiency, unstable performance of the extruded section, out-of-control extrusion temperature and high-temperature combustion risk, low yield and the like in the extrusion process of the magnesium alloy section.
Description
Technical Field
The invention belongs to the technical application field of mechanical devices, and particularly relates to a magnesium alloy cooling constant-speed extrusion device and method, which are mainly used in the field of magnesium alloy profile extrusion.
Background
The magnesium alloy profile extrusion technology is always a key technology in the field of magnesium alloy profile deep processing, and extrusion speed, extrusion straightness, profile yield, profile performance stability and the like are always puzzled on the technical problem of magnesium alloy profile extrusion; the extrusion speed has important influence on the temperature of the magnesium alloy during extrusion, the microstructure of a product and the room temperature mechanical property, the higher the extrusion speed is, the higher the friction temperature of a die orifice is, the magnesium alloy can be burnt at high temperature under the condition of reaching a certain extrusion speed, meanwhile, during constant-speed extrusion, the inconsistent temperature before, during and after extrusion can be caused along with the propulsion of an extrusion rod, the temperature range of the magnesium alloy during extrusion is narrow, the performance of the magnesium alloy can be influenced by the temperature change of +/-10 ℃, and the performance stability of the product can be directly influenced by the extrusion speed. Through multiple tests and verification of researchers of the company, the microstructure, the grain grade and the mechanical property of the AZ series magnesium alloy are more excellent than those of other temperature ranges when the temperature of an extrusion die is 380 ℃ higher than that of the AZ series magnesium alloy.
Disclosure of Invention
The technical problem to be solved by the invention is as follows:
1. the problem of low extrusion efficiency of the magnesium alloy section is solved;
2. the risk of magnesium alloy high-temperature combustion caused by high-speed extrusion of the magnesium alloy is solved;
3. the problem of inconsistent performance of the constant-speed extruded material of the magnesium alloy section is solved;
4. the yield and the utilization rate of the magnesium alloy extruded section are improved.
5. Solves part of problems of limiting the application of the magnesium alloy section bar.
The technical scheme of the invention is as follows:
a magnesium alloy cooling constant-speed extrusion device is characterized in that the magnesium alloy comprises, by mass, Al 6.0%; 1.0 percent of Zns; 0.3 percent of Mn0; RE 3.0%; 0.8 percent of Ca0; the balance being Mg.
A magnesium alloy cooling constant-speed extrusion device is characterized by comprising a master control box, a constant-temperature base station, a temperature control device, a constant-temperature die carrier and a connecting high-pressure pipeline; the temperature control device is fixed with one end of the constant temperature base station through a support seat, the temperature control device is mutually connected with the constant temperature base station through a high-pressure pipeline, the other end of the constant temperature base station is connected with a constant temperature die carrier, and the constant temperature die carrier is arranged on an extruder; the constant temperature base station consists of a liquid tank, a pump station and an electromagnetic valve, wherein the liquid tank is provided with a liquid inlet and a liquid outlet, and the liquid tank is respectively connected with the temperature control device and the pump station; the temperature control device consists of a thermostat device, an electromagnetic valve and an air-cooled heat dissipation fence, wherein the air-cooled heat dissipation fence is provided with a liquid inlet and a liquid outlet and is respectively connected with the constant-temperature die carrier and the liquid tank; the bottom of the constant-temperature die carrier is provided with a temperature sensor, and the temperature control device, the temperature sensor and the master control box are connected through a signal line integrated cable bundle.
A magnesium alloy cooling constant-speed extrusion method is characterized in that a master control box receives information and outputs instructions to respectively control a base station, a temperature control device and a multifunctional constant-temperature die carrier; in the production process, before extrusion, the mold is taken out of a heating furnace to ensure that the temperature is 400 ℃, after extrusion is started, the mold is thermally lost due to rod feeding and operation time, the temperature during extrusion is 380 ℃, the temperature of a magnesium alloy rod is controlled to be above 370 ℃ before the magnesium alloy rod is put into the machine, a temperature sensor on a multifunctional mold frame transmits real-time temperature data to a master control box in the extrusion process, the control box judges whether the temperature of the mold is higher than 380 ℃ according to a preset 370 plus material optimal temperature range after receiving the data transmitted by the multifunctional mold frame, if the temperature of the mold is higher than 380 ℃, the control box sends an instruction to a base station, a liquid pump of the base station starts working, the cooling liquid is conveyed to a cooling pipeline of the multifunctional mold frame, the mold is continuously cooled, the liquid returns to the base station through a loop after being cooled, passes through a temperature control device and a cooling heat dissipation fence in the process of returning to the base station, a thermostat device detects that the temperature of the returned cooling liquid is higher than 40 ℃ preset, the cooling fan can be automatically started to perform air cooling on the cooling liquid flowing through the cooling heat dissipation fence until the cooling liquid returns to the base station liquid tank. The above circulation is carried out, so that the temperature of the die can be controlled to be between 370 ℃ and 380 ℃, and the extrusion of the magnesium alloy section can be smoothly carried out.
The invention solves the problem that heat is generated due to extrusion in the process of extruding the magnesium alloy section, and the production efficiency is low because the extrusion speed is required to be adjusted to control the generation of heat; meanwhile, the extrusion speed is adjusted for multiple times, so that the extrusion temperature and the extrusion speed of the same section at different stages are inconsistent, the performances of the section are inconsistent, and the quality of a product cannot be guaranteed; the over-burning phenomenon of the section bar can be caused due to the over-high extrusion heat, even high-temperature burning occurs, and the yield and the application rate of the section bar are reduced; in addition, the instability of the performance and quality of the section bar also restricts the multi-field large-scale application of the magnesium alloy section bar, the invention effectively solves various problems in the extrusion process of the magnesium alloy section bar, improves the production efficiency of the magnesium alloy section bar, ensures the quality stability and consistency of the magnesium alloy extrusion section bar and promotes the development of the magnesium alloy industry.
Drawings
FIG. 1 is a structural view of a magnesium alloy cooling constant-speed extrusion apparatus according to the present invention.
In the figure, 1, a control valve pump, 2, a liquid pump, 3, a liquid tank, 4, a temperature controller, 5, a thermostat, 6, a die carrier, 7, a temperature sensor, 8 and a main control box.
Detailed Description
As shown in fig. 1, a magnesium alloy cooling constant-speed extrusion device is characterized by comprising a master control box 8, a constant-temperature base station, a temperature control device, a constant-temperature die set and a high-pressure pipeline; the temperature control device is fixed with one end of the constant temperature base station through the supporting seat, the temperature control device is connected with the constant temperature base station through a high-pressure pipeline, the other end of the constant temperature base station is connected with the constant temperature die carrier, and the constant temperature die carrier is arranged on the extruding machine.
The master control box 8 is composed of a box body, a power switch, a PLC control module and a relay thereof. And a power switch, a PLC control module and a relay thereof are arranged in the box body.
The constant temperature basic station comprises liquid case 3, pump station 2, solenoid valve 1, and liquid case 3 is equipped with inlet, liquid outlet, and temperature control device's liquid outlet is connected to the inlet, and liquid outlet connection liquid channel 9's high-pressure pipeline, and liquid case 3 links to each other with temperature controller 4 and pump station 2 respectively, and total control box 8 links to each other with temperature controller 4 and pump station 2 passing signal line and the integrated pencil of power cord respectively.
The temperature control device is composed of a thermostat 5, an electromagnetic valve 1 and an air-cooled heat dissipation fence 10, wherein the air-cooled heat dissipation fence 10 is provided with a liquid inlet and a liquid outlet, and the air-cooled heat dissipation fence 10 is respectively connected with a constant temperature die carrier and a liquid tank. The thermostat 5 is installed on a high-pressure pipeline which connects the liquid tank 3 and the air-cooled heat dissipation fence 10. The liquid inlet of the cold heat dissipation fence 10 is connected with the liquid outlet pipe of the high-pressure pipeline of the constant-temperature die carrier. The inlet and outlet of the cold heat dissipation fence 10 are connected with the liquid inlet of the liquid tank 3.
The constant temperature die carrier functions to carry the extrusion die and conduct heat to the die. Constant temperature die carrier just is located the mould mounting groove bottom and is equipped with temperature sensor 7, is located mould mounting groove constant temperature die carrier all around and has cast fluidpassage 9, and fluidpassage 9 is connected with air-cooled heat dissipation fence 10, the solenoid valve 1 of constant temperature basic station respectively through high-pressure line, and temperature sensor connects total control box 8, and temperature sensor gives total control box 8 with mould temperature real-time transmission.
The constant-temperature die set has the main functions of bearing an extrusion die and conducting heat conduction on the die, liquid channels are cast in the die set around a die mounting groove, a temperature sensor is arranged at the bottom of the die set and can transmit the temperature of the die to a master control box in real time, and a signal wire integrated wiring harness is connected with the master control box. The magnesium alloy comprises 6.0 percent of Al by mass; 1.0 percent of Zns; 0.3 percent of Mn0; RE 3.0%; 0.8 percent of Ca0; the balance being Mg.
A magnesium alloy cooling constant-speed extrusion method is characterized in that the master control box of claim 1 is used for receiving information and outputting instructions to respectively control a base station, a temperature control device and a multifunctional constant-temperature die set; in the production process, before extrusion, the mold is taken out of a heating furnace to ensure that the temperature is about 400 ℃, after extrusion, the mold is subjected to heat loss due to rod feeding and operation time, the temperature is generally about 380 ℃ during extrusion, the temperature of a magnesium alloy rod is controlled to be above 370 ℃ before the magnesium alloy rod is inserted into the machine, a temperature sensor on a multifunctional mold frame transmits real-time temperature data to a master control box in the extrusion process, the control box judges whether the temperature of the mold is higher than 380 ℃ according to a preset 370 plus 380 ℃ optimal temperature interval after receiving the data transmitted by the multifunctional mold frame, if the temperature of the mold is higher than 380 ℃, the control box gives an instruction to a base station, a liquid pump of the base station starts working, cooling liquid is conveyed to a cooling pipeline of the multifunctional mold frame to continuously cool the mold, the cooled liquid returns to the base station through a loop, the liquid passes through a temperature control device and a cooling heat dissipation fence in the process of returning to the base station, a thermostat device detects that the temperature of the returned cooling liquid is higher than 40 ℃ preset, the cooling fan can be automatically started to perform air cooling on the cooling liquid flowing through the cooling heat dissipation fence until the cooling liquid returns to the base station liquid tank. The above circulation is carried out, so that the temperature of the die can be controlled to be between 370 ℃ and 380 ℃, and the extrusion of the magnesium alloy section can be smoothly carried out.
Claims (3)
1. A magnesium alloy cooling constant-speed extrusion device is characterized by comprising a master control box, a constant-temperature base station, a temperature control device, a constant-temperature die carrier and a connecting high-pressure pipeline; the temperature control device is fixed with the constant temperature base station through a support seat, the temperature control device is connected with the constant temperature base station through a high-pressure pipeline, the constant temperature base station is connected with the constant temperature die carrier through a high-pressure pipeline, and the constant temperature die carrier is arranged on the extruder; the constant-temperature base station consists of a liquid tank, a pump station and an electromagnetic valve, wherein the liquid tank is connected with the pump station, the pump station is connected with the electromagnetic valve, and the electromagnetic valve is connected with a master control box; the temperature control device consists of a thermostat, an electromagnetic valve and an air-cooled heat dissipation fence, the air-cooled heat dissipation fence is respectively connected with the constant-temperature die carrier and the liquid tank through high-pressure pipelines, and the thermostat and the electromagnetic valve are both connected with a master control box; the bottom of the constant-temperature die carrier is provided with a temperature sensor, and the temperature sensor is connected with the master control box through a signal wire integrated wiring harness.
2. The magnesium alloy cooling constant-speed extrusion device as recited in claim 1, wherein the magnesium alloy comprises, by mass%, Al 6.0%; 1.0 percent of Zns; 0.3 percent of Mn0; RE 3.0%; 0.8 percent of Ca0; the balance being Mg.
3. A magnesium alloy cooling constant-speed extrusion method is characterized in that the master control box of claim 1 is used for receiving information and outputting instructions to respectively control a base station, a temperature control device and a multifunctional constant-temperature die set; in the production process, before extrusion, the mold is taken out of a heating furnace to ensure that the temperature is about 400 ℃, after extrusion, the mold is subjected to heat loss due to rod feeding and operation time, the temperature is generally about 380 ℃ during extrusion, the temperature of a magnesium alloy rod is controlled to be above 370 ℃ before the magnesium alloy rod is inserted into the machine, a temperature sensor on a multifunctional mold frame transmits real-time temperature data to a master control box in the extrusion process, the control box judges whether the temperature of the mold is higher than 380 ℃ according to a preset 370 plus 380 ℃ optimal temperature interval after receiving the data transmitted by the multifunctional mold frame, if the temperature of the mold is higher than 380 ℃, the control box gives an instruction to a base station, a liquid pump of the base station starts working, cooling liquid is conveyed to a cooling pipeline of the multifunctional mold frame to continuously cool the mold, the cooled liquid returns to the base station through a loop, the liquid passes through a temperature control device and a cooling heat dissipation fence in the process of returning to the base station, a thermostat device detects that the temperature of the returned cooling liquid is higher than 40 ℃ preset, the cooling fan can be automatically started to start air cooling on the cooling liquid flowing through the cooling heat dissipation fence until the cooling liquid returns to the base station liquid tank; the above circulation is carried out, so that the temperature of the die can be controlled to be between 370 ℃ and 380 ℃, and the extrusion of the magnesium alloy section can be smoothly carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111581805.6A CN114247767A (en) | 2021-12-22 | 2021-12-22 | Magnesium alloy cooling constant-speed extrusion device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111581805.6A CN114247767A (en) | 2021-12-22 | 2021-12-22 | Magnesium alloy cooling constant-speed extrusion device and method |
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| Publication Number | Publication Date |
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| CN114247767A true CN114247767A (en) | 2022-03-29 |
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| CN202111581805.6A Pending CN114247767A (en) | 2021-12-22 | 2021-12-22 | Magnesium alloy cooling constant-speed extrusion device and method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060017673A (en) * | 2006-02-10 | 2006-02-24 | (주)유창금속 | Extruding machine of uniform temperature controll |
| CN101121980A (en) * | 2007-09-20 | 2008-02-13 | 王仁辉 | Technique for processing high-strength high-tractility magnesium alloy member |
| CN101169357A (en) * | 2007-11-22 | 2008-04-30 | 重庆大学 | Metal hot extrusion formability judging method |
| TW201202436A (en) * | 2010-03-29 | 2012-01-16 | Korea Ind Tech Inst | Magnesium alloy for high temperature and manufacturing method thereof |
| CN105414236A (en) * | 2015-11-12 | 2016-03-23 | 天津东义镁制品股份有限公司 | Magnesium alloy sectional material extrusion die cooling structure |
| CN108500076A (en) * | 2018-05-22 | 2018-09-07 | 浙江海亮新材料有限公司 | A kind of device and method accurately controlling aluminium section hot-extrusion die local temperature |
| CN109093092A (en) * | 2018-08-10 | 2018-12-28 | 徐峰 | A kind of machine side cooling stations |
| CN216757686U (en) * | 2021-12-22 | 2022-06-17 | 古交市银河镁业有限公司 | Magnesium alloy cooling constant-speed extrusion device |
-
2021
- 2021-12-22 CN CN202111581805.6A patent/CN114247767A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060017673A (en) * | 2006-02-10 | 2006-02-24 | (주)유창금속 | Extruding machine of uniform temperature controll |
| CN101121980A (en) * | 2007-09-20 | 2008-02-13 | 王仁辉 | Technique for processing high-strength high-tractility magnesium alloy member |
| CN101169357A (en) * | 2007-11-22 | 2008-04-30 | 重庆大学 | Metal hot extrusion formability judging method |
| TW201202436A (en) * | 2010-03-29 | 2012-01-16 | Korea Ind Tech Inst | Magnesium alloy for high temperature and manufacturing method thereof |
| CN105414236A (en) * | 2015-11-12 | 2016-03-23 | 天津东义镁制品股份有限公司 | Magnesium alloy sectional material extrusion die cooling structure |
| CN108500076A (en) * | 2018-05-22 | 2018-09-07 | 浙江海亮新材料有限公司 | A kind of device and method accurately controlling aluminium section hot-extrusion die local temperature |
| CN109093092A (en) * | 2018-08-10 | 2018-12-28 | 徐峰 | A kind of machine side cooling stations |
| CN216757686U (en) * | 2021-12-22 | 2022-06-17 | 古交市银河镁业有限公司 | Magnesium alloy cooling constant-speed extrusion device |
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