CN110744043A - Method for controlling liquid level of molten aluminum in wrought aluminum alloy casting process - Google Patents
Method for controlling liquid level of molten aluminum in wrought aluminum alloy casting process Download PDFInfo
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- CN110744043A CN110744043A CN201911169866.4A CN201911169866A CN110744043A CN 110744043 A CN110744043 A CN 110744043A CN 201911169866 A CN201911169866 A CN 201911169866A CN 110744043 A CN110744043 A CN 110744043A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D46/00—Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
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Abstract
The invention discloses a method for controlling the liquid level height of molten aluminum in a wrought aluminum alloy casting process, which is characterized in that a liquid level detector is adopted to detect the liquid level height of the molten aluminum in a launder between a holding furnace and a casting machine during the casting of the wrought aluminum alloy; this liquid level detector is connected with a control system, and this control system includes central processing unit and the holding furnace the control unit who is connected with this central processing unit, wherein: the central processing unit is used for receiving the liquid level detection value sent by the liquid level detector, comparing the liquid level detection value with a liquid level preset value, sending a control instruction according to a comparison result and coordinating the work of the heat preservation furnace control unit; and the holding furnace control unit receives the control of the central processing unit and adjusts the inclination of the holding furnace so as to adjust the supply amount of the aluminum liquid of the holding furnace. The height of the liquid level of the aluminum liquid in the launder is monitored, and the supply amount of the aluminum liquid is adjusted, so that the liquid level of the aluminum liquid in the launder is always in a safe range, and the safe production of aluminum casting is ensured.
Description
Technical Field
The invention relates to a method for controlling the liquid level of molten aluminum in the casting process of wrought aluminum alloy.
Background
Aluminum is one of the most widely distributed and abundant metal elements in the earth crust, and the reserve of aluminum is higher than that of iron. Because aluminum and aluminum alloy have a series of excellent characteristics, the aluminum and aluminum alloy are widely applied to the industries of transportation, packaging containers, architectural decoration, aerospace, mechanical electrical and electronic communication and the like, and become important basic materials for developing national economy and improving the living standard of people's material and cultural living standard.
In the process of casting the aluminum, the aluminum liquid flows from the holding furnace to the die platform through the runner for casting, and in the casting process, if the supply of the aluminum liquid in the holding furnace is more than the consumption of the aluminum liquid in the die platform, the heights of the aluminum liquid in the runner and the die platform can be increased and even spread out, thereby causing safety accidents. If the aluminum liquid supply of the holding furnace is less than the consumption of the aluminum liquid of the die table, the height of the aluminum liquid of the launder and the die table is reduced, the aluminum liquid supply cannot follow the descending speed of a hydraulic cylinder of a casting machine, the die table is leaked with aluminum, and safety accidents can also occur.
Disclosure of Invention
The invention aims to overcome the defects and provides a method for controlling the liquid level of molten aluminum to improve the safety in the aluminum casting process, and the specific technical scheme is as follows:
the method for controlling the liquid level height of the aluminum liquid in the process of casting the wrought aluminum alloy comprises the steps of detecting the liquid level height of the aluminum liquid in a launder between a holding furnace and a casting machine by a liquid level detector when the wrought aluminum alloy is cast;
this liquid level detector is connected with a control system, and this control system includes central processing unit and the holding furnace the control unit who is connected with this central processing unit, wherein:
the central processing unit is used for receiving the liquid level detection value sent by the liquid level detector, comparing the liquid level detection value with a liquid level preset value, sending a control instruction according to a comparison result and coordinating the work of the heat preservation furnace control unit;
and the holding furnace control unit receives the control of the central processing unit and adjusts the inclination of the holding furnace so as to adjust the supply amount of the aluminum liquid of the holding furnace.
Specifically, in the control method, the liquid level preset value comprises a liquid level upper limit value and a liquid level lower limit value, when the liquid level detection value is larger than or equal to the liquid level upper limit value, the central processing unit sends a holding furnace inclination reduction instruction to the holding furnace control unit, and the holding furnace control unit reduces the inclination of the holding furnace to reduce the supply amount of the aluminum liquid;
when the liquid level detection value is less than or equal to the liquid level lower limit value, the central processing unit sends a holding furnace inclination increasing instruction to the holding furnace control unit, and the holding furnace control unit increases the inclination of the holding furnace to increase the supply amount of the aluminum liquid.
By utilizing the method and the device, the height of the liquid level of the aluminum liquid in the launder is monitored and compared with the preset value of the liquid level height, and the inclination angle of the holding furnace is controlled according to the comparison result so as to adjust the supply amount of the aluminum liquid, so that the liquid level height of the aluminum liquid in the launder is always in a safe range, and the sufficient supply amount of the aluminum liquid can be ensured, and the sufficient supply amount of the aluminum liquid is matched with the aluminum liquid consumption of the die table, so that the safety production of aluminum casting is ensured.
Description of the drawings:
FIG. 1 is a schematic view of a casting process.
Detailed Description
The invention is further described by taking the casting production of the wrought aluminum alloy round ingot as an example, wherein the produced wrought aluminum alloy round ingot is applied to the fields of micro-channel flat tubes for automobile air conditioners, automobile forged hubs, electronic 3C products and the like.
First, the casting of a conventional wrought aluminum alloy round ingot will be described. At present, in the casting process, a specially-assigned person is required to observe the height of molten aluminum in the launder, when the height of the molten aluminum in the launder is found to be higher or lower, the tilting angle of the holding furnace needs to be manually adjusted, the process is very inconvenient, and the process has certain hysteresis and potential safety hazards.
The following describes the casting of a wrought aluminum alloy round ingot after the present invention is applied.
Referring to fig. 1, first, a liquid level detector 210 is installed at one side of a launder 200 between a holding furnace 100 and a casting machine 300, in this embodiment, the liquid level detector 210 employs a Selcom laundrine laser sensor, the liquid level detector carries an output port, a central processing unit 400 directly employs a PLC control system carried by the casting machine, and two liquid level preset values, namely, a liquid level upper limit value and a liquid level lower limit value, are set in the PLC control system, a control device of a tilt angle of the holding furnace is hydraulic control, and the control device is directly used as a holding furnace control unit 110. And connecting a data output port of the liquid level detector into the PLC control system, and connecting a data port of the inclination angle control device of the holding furnace into the PLC control system.
In the embodiment, the upper limit and the lower limit of the liquid level height of the aluminum liquid in the launder are firstly set by a PLC control system, wherein the upper limit of the liquid level height of the aluminum liquid in the launder is set to 90mm, the lower limit is set to 70mm, the liquid level height of the aluminum liquid is continuously detected by a liquid level detector 210 and is sent to the PLC control system, the PLC control system compares the detection data with a preset value, when the liquid level height of the aluminum liquid reaches or exceeds 90mm, the PLC control system reduces the inclination of the holding furnace through a control device, and the supply amount of the aluminum liquid is reduced. When the liquid level height of the aluminum liquid reaches or is lower than 70mm, the PLC control system increases the inclination of the holding furnace through the control device, and the supply amount of the aluminum liquid is increased.
Claims (2)
1. The method for controlling the liquid level height of the aluminum liquid in the process of casting the wrought aluminum alloy is characterized in that a liquid level detector is adopted to detect the liquid level height of the aluminum liquid in a launder between a holding furnace and a casting machine during the casting of the wrought aluminum alloy.
This liquid level detector is connected with a control system, and this control system includes central processing unit and the holding furnace the control unit who is connected with this central processing unit, wherein:
the central processing unit is used for receiving the liquid level detection value sent by the liquid level detector, comparing the liquid level detection value with a liquid level preset value, sending a control instruction according to a comparison result and coordinating the work of the heat preservation furnace control unit;
and the holding furnace control unit receives the control of the central processing unit and adjusts the inclination of the holding furnace so as to adjust the supply amount of the aluminum liquid of the holding furnace.
2. The control method according to claim 1, wherein the liquid level preset value comprises a liquid level upper limit value and a liquid level lower limit value, when the liquid level detection value is greater than or equal to the liquid level upper limit value, the central processing unit sends a holding furnace inclination reduction instruction to the holding furnace control unit, and the holding furnace control unit reduces the inclination of the holding furnace to reduce the supply amount of the aluminum liquid;
when the liquid level detection value is less than or equal to the liquid level lower limit value, the central processing unit sends a holding furnace inclination increasing instruction to the holding furnace control unit, and the holding furnace control unit increases the inclination of the holding furnace to increase the supply amount of the aluminum liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911169866.4A CN110744043A (en) | 2019-11-26 | 2019-11-26 | Method for controlling liquid level of molten aluminum in wrought aluminum alloy casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911169866.4A CN110744043A (en) | 2019-11-26 | 2019-11-26 | Method for controlling liquid level of molten aluminum in wrought aluminum alloy casting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110744043A true CN110744043A (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911169866.4A Withdrawn CN110744043A (en) | 2019-11-26 | 2019-11-26 | Method for controlling liquid level of molten aluminum in wrought aluminum alloy casting process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998029743A1 (en) * | 1997-01-02 | 1998-07-09 | Vesuvius Crucible Company | Apparatus and method for measuring the depth of molten steel and slag |
| CN202062058U (en) * | 2011-05-26 | 2011-12-07 | 王飞 | Monitoring protection device for overturning heat preserving furnace aluminum liquid level control |
| CN203687632U (en) * | 2013-12-23 | 2014-07-02 | 苏州市天吴电工材料科技有限公司 | Flow control device for heat preserving furnace |
| CN109332672A (en) * | 2018-12-14 | 2019-02-15 | 河北四通新型金属材料股份有限公司 | A kind of electric furnace topples over aluminum water automatic control system |
| CN208575250U (en) * | 2018-06-20 | 2019-03-05 | 能硕热技术（天津）有限公司 | A kind of device detecting molten aluminum lower fluid level limit |
-
2019
- 2019-11-26 CN CN201911169866.4A patent/CN110744043A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998029743A1 (en) * | 1997-01-02 | 1998-07-09 | Vesuvius Crucible Company | Apparatus and method for measuring the depth of molten steel and slag |
| CN202062058U (en) * | 2011-05-26 | 2011-12-07 | 王飞 | Monitoring protection device for overturning heat preserving furnace aluminum liquid level control |
| CN203687632U (en) * | 2013-12-23 | 2014-07-02 | 苏州市天吴电工材料科技有限公司 | Flow control device for heat preserving furnace |
| CN208575250U (en) * | 2018-06-20 | 2019-03-05 | 能硕热技术（天津）有限公司 | A kind of device detecting molten aluminum lower fluid level limit |
| CN109332672A (en) * | 2018-12-14 | 2019-02-15 | 河北四通新型金属材料股份有限公司 | A kind of electric furnace topples over aluminum water automatic control system |
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Application publication date: 20200204 |
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