CN113618030A - Automatic spray cooling method for pig casting machine - Google Patents
Automatic spray cooling method for pig casting machine Download PDFInfo
- Publication number
- CN113618030A CN113618030A CN202110871860.2A CN202110871860A CN113618030A CN 113618030 A CN113618030 A CN 113618030A CN 202110871860 A CN202110871860 A CN 202110871860A CN 113618030 A CN113618030 A CN 113618030A
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- China
- Prior art keywords
- spraying
- pressure switch
- valve
- chain belt
- place
- 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.)
- Pending
Links
- 238000005266 casting Methods 0.000 title claims abstract description 15
- 238000001816 cooling Methods 0.000 title claims abstract description 10
- 239000007921 spray Substances 0.000 title claims description 25
- 238000005507 spraying Methods 0.000 claims abstract description 93
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229910052742 iron Inorganic materials 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000000007 visual effect Effects 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims abstract description 8
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000000498 cooling water Substances 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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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
- B22D3/00—Pig or like casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D5/00—Machines or plants for pig or like casting
Abstract
The invention discloses an automatic spraying and cooling method of a pig casting machine, which comprises the steps that an electromagnetic valve is connected in parallel with a manual valve of each section of spraying pipe, a pressure switch is connected to a pipeline after the electromagnetic valve is connected in parallel, and the electromagnetic valve and the pressure switch are both connected with a control unit; the control process of the control unit comprises the following steps: when the temperature measuring probe detects that molten iron enters a chain belt, or manually clicks a 'spraying start' button, the spraying start time is determined according to the moving speed of the chain belt, the electromagnetic valves on all sections of spraying pipes are sequentially opened, whether the electromagnetic valve is normally opened or not is judged according to the pressure switch setting, if the electromagnetic valve is not normally opened, an audible and visual alarm is carried out, and a post worker turns on a manual valve on site; and after the cast iron is finished, closing the spraying valves in sequence, and finishing the spraying. The invention can solve the problems that the manual spraying of the existing spraying equipment is difficult to accurately switch on and off according to the real-time condition, the production quality is influenced, and the labor intensity is increased.
Description
Technical Field
The invention relates to the technical field of steel manufacturing, in particular to an automatic spray cooling method for a pig casting machine.
Background
In the production process of the pig machine, high-temperature iron blocks (liquid) in an iron mold on a chain belt need to be sprayed and cooled in time. The control at the initial stage of spraying start is very critical, the start is too early, water is sprayed into an iron mold without iron blocks (liquid), a gunite coating on the iron mold can be washed away, iron bonding of the iron mold is easily caused, meanwhile, the temperature of the iron mold is reduced too fast, moisture in the mold cannot be dried, the phenomena of splashing, blasting and the like of molten iron in the casting process are easily caused, and the yield of the molten iron is reduced; the starting is too slow, the high-temperature iron blocks (liquid) cannot be cooled in time, and the iron mold and chain belt equipment or iron-loading vehicles are easily burnt; in addition, the on-site valve is manually opened in the spraying control, the opening time and the opening degree of the valve are sequentially opened by the experience of an operator, the phenomenon that the control of the opening time point of the valve is not accurate easily occurs, and the labor intensity of post workers is increased. The existing chain belt of the pig casting machine is sequentially provided with 1# -10 sections of spray pipes, the front end of the chain belt is provided with a temperature measuring probe, the tail section of the chain belt is provided with a machine head spray pipe, each section of spray pipe is provided with a manual valve, the phenomena of too fast and too slow starting often occur, the opening time and the opening degree cannot be accurately adjusted according to the real-time condition, the spraying effect is poor, and the production quality is affected, so that the automatic modification of the spraying control of the chain belt of the pig casting machine is very necessary.
Disclosure of Invention
The invention aims to solve the problem that manual spraying of the existing spraying equipment is difficult to accurately switch on and off according to real-time conditions, production quality is affected, and labor intensity is increased.
In order to solve the problems, the technical scheme of the invention is as follows: the automatic spraying and cooling method of the pig machine comprises the steps that an electromagnetic valve is connected in parallel with a manual valve of each section of spraying pipe, a pressure switch is connected to a pipeline after the manual valve is connected in parallel, and the electromagnetic valve and the pressure switch are both connected with a control unit;
the control process of the control unit comprises the following steps:
A. setting the starting and stopping time of each section of spraying pipe by combining the installation position of each section of spraying pipe, the running speed of the chain belt, the running state of the chain belt and the chain belt temperature detection, obtaining the water pressure of each section of spraying pipe by the pressure switch, and judging whether the electromagnetic valve is normally opened or not;
B. when the temperature measuring probe detects that molten iron enters a chain belt, or manually clicks a 'spraying start' button, the spraying start time is determined according to the moving speed of the chain belt, the electromagnetic valves on the 1# -10# spraying pipes are sequentially opened, wherein the opening degrees of the electromagnetic valves on the 1# -2# spraying pipes and the 9# -10# spraying pipes are in a controllable mode, and the electromagnetic valves of the 3# -8# spraying pipes and the machine head spraying pipes are fully opened; after all the electromagnetic valves are opened, whether the electromagnetic valves are normally opened or not is judged according to the setting of the pressure switches, if the electromagnetic valves are not normally opened, the sound and light alarm is given, and the manual valves are opened when the station worker arrives at the site; and after the cast iron is finished, closing the spraying valves in sequence, and finishing the spraying.
In the above technical solution, a more specific solution may be: wherein step B may also be:
the valve opening process: when the temperature measuring probe detects that molten iron enters the chain belt and the temperature of the chain belt is higher than 200 ℃, or a 'spraying start' button is manually clicked, a 1# spraying pipe electromagnetic valve is opened, whether the position of a pressure switch is in place or not is judged, when the position of the pressure switch is not in place, an audible and visual alarm is carried out, and a 1# spraying pipe manual valve is manually opened; when the position of the pressure switch is in place, delaying for 17 seconds, opening a No. 2 spray pipe electromagnetic valve, judging whether the position of the pressure switch is in place, circularly opening a No. 3-10 spray pipe manual valve in sequence, then opening a machine head spray pipe electromagnetic valve, continuously judging whether the position of the pressure switch is in place, and when the position of the pressure switch is not in place, performing audible and visual alarm, and manually opening the machine head spray pipe manual valve; when the pressure switch is in place, spraying is carried out normally.
Further: wherein step B also includes: and (3) valve closing process: when the temperature of the chain belt is less than 100 ℃, or a 'spraying stop' button is manually clicked, the No. 1-10 spraying pipe electromagnetic valve and the machine head spraying pipe electromagnetic valve are sequentially closed, whether the pressure switch positions of all spraying sections are in place is judged, when the pressure switch positions are not in place, an audible and visual alarm is carried out, and all sections of spraying pipes and manual valves on the machine head spraying pipes are manually closed; when the pressure switch is in place, the spraying is finished.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
according to the automatic spraying and cooling method of the iron casting machine, the electromagnetic valves are connected in parallel to all original manual valves of the spraying pipes, then the pressure switches for testing whether the valves are normally closed are connected in series and are connected with the control unit, and the opening and closing time and the opening degree of all the electromagnetic valves of the spraying pipes on the chain are accurately controlled through the control process of the control unit, so that the accurate control of the opening and closing time and the running flow of the spraying and cooling water of the iron casting machine is realized; cooling water is automatically sprayed in time in a proper amount, so that the phenomena of iron mold bonding, molten iron splashing, blasting, chain belt equipment burning loss and the like are avoided, the labor intensity of cast iron production is further reduced, and the labor cost investment is reduced; in addition, the originally designed manual regulating valve is reserved, and continuous and stable production operation can be ensured through manual regulation when an automatic system fails.
Drawings
FIG. 1 is a schematic view of the structure of a shower pipe and a chain belt according to an embodiment of the present invention;
FIG. 2 is a schematic view of a valve structure of a shower pipe according to an embodiment of the present invention;
FIG. 3 is a flow chart of a valve opening process according to an embodiment of the present invention;
fig. 4 is a flow chart of a valve closing process according to an embodiment of the present invention.
Detailed Description
The embodiments of the invention will be described in further detail with reference to the accompanying drawings:
as shown in figures 1 to 3, a chain belt 1 of the pig casting machine is sequentially provided with 1# -10 sections of spray pipes 2, the front end of the chain belt 1 is provided with a temperature measuring probe 4, molten iron flows into the chain belt 1 from a molten iron tank 5, the tail end of the chain belt 1 is provided with a machine head spray pipe 3, and each section of spray pipe is provided with a manual valve 6.
The control process of the control unit 9 includes:
A. the installation position of each section of spraying pipe, the running speed of the chain belt, the running state of the chain belt and the temperature detection of the chain belt are combined, the starting and stopping time of each section of spraying pipe is set, the pressure switch 8 obtains the water pressure of each section of spraying pipe, and whether the electromagnetic valve 7 is normally opened or not is judged.
B. The valve opening process: when the temperature measuring probe 4 detects that molten iron enters the chain belt 1 and the temperature of the chain belt is higher than 200 ℃, or a 'spraying start' button is manually clicked, a No. 1 spraying pipe electromagnetic valve is opened, whether the position of a pressure switch is in place or not is judged, and when the position of the pressure switch is not in place, an audible and visual alarm is carried out, and a No. 1 spraying pipe manual valve is manually opened; when the pressure switch position is in place, delaying for 17 seconds, opening a No. 2 spray pipe electromagnetic valve, judging whether the pressure switch position is in place, circularly opening a No. 3-10 spray pipe manual valve in sequence, then opening a machine head spray pipe 3 electromagnetic valve, continuously judging whether the pressure switch position is in place, and when the pressure switch position is not in place, giving an audible and visual alarm, and manually opening the machine head spray pipe manual valve; when the pressure switch is in place, spraying is carried out normally.
And (3) valve closing process: when the temperature of the chain belt is less than 100 ℃, or a 'spraying stop' button is manually clicked, the solenoid valve valves of the No. 1-No. 10 spraying pipes 2 and the solenoid valve valves of the machine head spraying pipes 3 are sequentially closed, whether the positions of the pressure switches 8 of all spraying sections are in place is judged, and when the positions of the pressure switches are not in place, an audible and visual alarm is carried out, and all sections of spraying pipes and manual valves on the machine head spraying pipes are manually closed; when the pressure switch is in place, the spraying is finished.
The whole process comprises the steps of determining the spraying opening time according to the moving speed of the chain belt, and sequentially opening the electromagnetic valves 7 on the 1# -10# spraying pipes 2, wherein the opening degrees of the electromagnetic valves on the 1# -2# spraying pipes and the 9# -10# spraying pipes are in a controllable mode, and the electromagnetic valves of the 3# -8# spraying pipes and the machine head spraying pipes are fully opened; after all the electromagnetic valves are opened, whether the electromagnetic valves are normally opened or not is judged according to the setting of the pressure switch 8, if the electromagnetic valves are not normally opened, an audible and visual alarm is given, and the manual valves are opened when the post worker arrives at the site; and after the cast iron is finished, closing the spraying valves in sequence, and finishing the spraying.
According to the automatic spraying and cooling method of the iron casting machine, the electromagnetic valves 7 are connected in parallel on all original manual valves 6 of the spraying pipes, then the pressure switches 8 for testing whether the valves are normally closed are connected in series and are connected with the control unit 9, the on-off time and the opening degree of all the spraying pipe electromagnetic valves on the chain are accurately controlled through the control process of the control unit, and the accurate control of the on-off time and the running flow of the spraying cooling water of the iron casting machine is realized; cooling water is automatically sprayed in time in a proper amount, so that the phenomena of iron mold bonding, molten iron splashing, blasting, chain belt equipment burning loss and the like are avoided, the labor intensity of cast iron production is further reduced, and the labor cost investment is reduced; in addition, the originally designed manual regulating valve is reserved, and continuous and stable production operation can be ensured through manual regulation when an automatic system fails.
Claims (3)
1. An automatic spray cooling method of a pig casting machine is characterized in that: the method comprises the steps that an electromagnetic valve is connected in parallel with a manual valve of each section of spray pipe, a pressure switch is connected to a pipeline after the manual valve is connected in parallel, and the electromagnetic valve and the pressure switch are both connected with a control unit;
the control process of the control unit comprises the following steps:
A. setting the starting and stopping time of each section of spraying pipe by combining the installation position of each section of spraying pipe, the running speed of the chain belt, the running state of the chain belt and the chain belt temperature detection, obtaining the water pressure of each section of spraying pipe by the pressure switch, and judging whether the electromagnetic valve is normally opened or not;
B. when the temperature measuring probe detects that molten iron enters a chain belt, or manually clicks a 'spraying start' button, the spraying start time is determined according to the moving speed of the chain belt, the electromagnetic valves on the 1# -10# spraying pipes are sequentially opened, wherein the opening degrees of the electromagnetic valves on the 1# -2# spraying pipes and the 9# -10# spraying pipes are in a controllable mode, and the electromagnetic valves of the 3# -8# spraying pipes and the machine head spraying pipes are fully opened; after all the electromagnetic valves are opened, whether the electromagnetic valves are normally opened or not is judged according to the setting of the pressure switches, if the electromagnetic valves are not normally opened, the sound and light alarm is given, and the manual valves are opened when the station worker arrives at the site; and after the cast iron is finished, closing the spraying valves in sequence, and finishing the spraying.
2. The automatic spray cooling method of an iron casting machine according to claim 1, characterized in that: wherein step B may also be:
the valve opening process: when the temperature measuring probe detects that molten iron enters the chain belt and the temperature of the chain belt is higher than 200 ℃, or a 'spraying start' button is manually clicked, a 1# spraying pipe electromagnetic valve is opened, whether the position of a pressure switch is in place or not is judged, when the position of the pressure switch is not in place, an audible and visual alarm is carried out, and a 1# spraying pipe manual valve is manually opened; when the position of the pressure switch is in place, delaying for 17 seconds, opening a No. 2 spray pipe electromagnetic valve, judging whether the position of the pressure switch is in place, circularly opening a No. 3-10 spray pipe manual valve in sequence, then opening a machine head spray pipe electromagnetic valve, continuously judging whether the position of the pressure switch is in place, and when the position of the pressure switch is not in place, performing audible and visual alarm, and manually opening the machine head spray pipe manual valve; when the pressure switch is in place, spraying is carried out normally.
3. The automatic spray cooling method of an iron casting machine according to claim 2, characterized in that: wherein step B also includes:
and (3) valve closing process: when the temperature of the chain belt is less than 100 ℃, or a 'spraying stop' button is manually clicked, the No. 1-10 spraying pipe electromagnetic valve and the machine head spraying pipe electromagnetic valve are sequentially closed, whether the pressure switch positions of all spraying sections are in place is judged, when the pressure switch positions are not in place, an audible and visual alarm is carried out, and all sections of spraying pipes and manual valves on the machine head spraying pipes are manually closed; when the pressure switch is in place, the spraying is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871860.2A CN113618030A (en) | 2021-07-30 | 2021-07-30 | Automatic spray cooling method for pig casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871860.2A CN113618030A (en) | 2021-07-30 | 2021-07-30 | Automatic spray cooling method for pig casting machine |
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| Publication Number | Publication Date |
|---|---|
| CN113618030A true CN113618030A (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110871860.2A Pending CN113618030A (en) | 2021-07-30 | 2021-07-30 | Automatic spray cooling method for pig casting machine |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06142843A (en) * | 1992-11-06 | 1994-05-24 | Kobe Steel Ltd | Method for controlling watering quantity for cooling pig casting machine |
| KR20100001304A (en) * | 2008-06-26 | 2010-01-06 | 현대제철 주식회사 | Mold heating apparatus of mold conveyor for pig casting machine |
| CN201558937U (en) * | 2009-10-09 | 2010-08-25 | 东营方圆有色金属有限公司 | Anode temperature automatic control device of disc casting machine |
| CN204428663U (en) * | 2015-01-05 | 2015-07-01 | 刘清良 | A kind of spray pipe network |
| CN208260032U (en) * | 2018-02-23 | 2018-12-21 | 江阴兴澄特种钢铁有限公司 | A kind of blast furnace casting position spraying system of fire fighting |
| CN208885927U (en) * | 2018-07-27 | 2019-05-21 | 陕煤集团神木张家峁矿业有限公司 | A kind of control device of speed reducer cooling water |
| CN109773163A (en) * | 2019-02-18 | 2019-05-21 | 安徽轰达电源有限公司 | The quick spray cooling device of storage battery production mold and its control system |
| CN110421131A (en) * | 2019-09-10 | 2019-11-08 | 山东钢铁股份有限公司 | Slab cooling device and method |
| CN110541963A (en) * | 2019-08-09 | 2019-12-06 | 柳州钢铁股份有限公司 | Double-valve-position detection system and control method for TRT hydraulic bypass valve |
| CN111408697A (en) * | 2020-04-27 | 2020-07-14 | 山东钢铁集团日照有限公司 | Automatic descaling and cooling device for high-temperature slab section |
| CN211878449U (en) * | 2020-04-13 | 2020-11-06 | 上海华峰铝业股份有限公司 | High-pressure fire extinguishing electric control system of stretch bending straightening machine |
-
2021
- 2021-07-30 CN CN202110871860.2A patent/CN113618030A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06142843A (en) * | 1992-11-06 | 1994-05-24 | Kobe Steel Ltd | Method for controlling watering quantity for cooling pig casting machine |
| KR20100001304A (en) * | 2008-06-26 | 2010-01-06 | 현대제철 주식회사 | Mold heating apparatus of mold conveyor for pig casting machine |
| CN201558937U (en) * | 2009-10-09 | 2010-08-25 | 东营方圆有色金属有限公司 | Anode temperature automatic control device of disc casting machine |
| CN204428663U (en) * | 2015-01-05 | 2015-07-01 | 刘清良 | A kind of spray pipe network |
| CN208260032U (en) * | 2018-02-23 | 2018-12-21 | 江阴兴澄特种钢铁有限公司 | A kind of blast furnace casting position spraying system of fire fighting |
| CN208885927U (en) * | 2018-07-27 | 2019-05-21 | 陕煤集团神木张家峁矿业有限公司 | A kind of control device of speed reducer cooling water |
| CN109773163A (en) * | 2019-02-18 | 2019-05-21 | 安徽轰达电源有限公司 | The quick spray cooling device of storage battery production mold and its control system |
| CN110541963A (en) * | 2019-08-09 | 2019-12-06 | 柳州钢铁股份有限公司 | Double-valve-position detection system and control method for TRT hydraulic bypass valve |
| CN110421131A (en) * | 2019-09-10 | 2019-11-08 | 山东钢铁股份有限公司 | Slab cooling device and method |
| CN211878449U (en) * | 2020-04-13 | 2020-11-06 | 上海华峰铝业股份有限公司 | High-pressure fire extinguishing electric control system of stretch bending straightening machine |
| CN111408697A (en) * | 2020-04-27 | 2020-07-14 | 山东钢铁集团日照有限公司 | Automatic descaling and cooling device for high-temperature slab section |
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Application publication date: 20211109 |