CN115069998A - Heat-preservation hot charging method for steel rolling medium plate blank - Google Patents
Heat-preservation hot charging method for steel rolling medium plate blank Download PDFInfo
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- CN115069998A CN115069998A CN202210775826.XA CN202210775826A CN115069998A CN 115069998 A CN115069998 A CN 115069998A CN 202210775826 A CN202210775826 A CN 202210775826A CN 115069998 A CN115069998 A CN 115069998A
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- China
- Prior art keywords
- temperature
- plate blank
- insulation box
- hot plate
- heat
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- 238000004321 preservation Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 11
- 239000010959 steel Substances 0.000 title claims abstract description 11
- 238000005096 rolling process Methods 0.000 title claims abstract description 9
- 238000009413 insulation Methods 0.000 claims abstract description 54
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000009628 steelmaking Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/70—Furnaces for ingots, i.e. soaking pits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention discloses a heat preservation and hot charging method for a steel rolling medium plate blank, which comprises the following steps: cutting and detecting the medium plate blank after the blank is cast; conveying the high-temperature medium plate blank to a medium plate blank warehouse; putting hot plate blanks which are not in time of entering the furnace into a heat preservation box and stacking; monitoring the temperature of the hot plate blank in the heat insulation box; controlling time and temperature, and charging the hot plate blank; preparing an insulation box for storing cut medium plate blanks, wherein a heating device is arranged in the insulation box, preheating the interior of the insulation box by the heating device, stopping preheating when the temperature in the insulation box reaches 500-600 ℃, controlling the time for the plate blanks not entering the furnace again within 2-3 h when the temperature of the hot plate blanks initially entering the insulation box is 850-900 ℃, keeping the temperature within 500-700 ℃, and placing the hot plate blanks into the heating furnace as far as possible within the range to prevent excessive heat loss.
Description
Technical Field
The invention relates to the technical field of steel rolling medium plate processing, in particular to a heat preservation and hot charging method for a steel rolling medium plate blank.
Background
The steel plate with the thickness of more than 4mm is called medium plate and thick plate, and is called medium plate for short. The method is used for the departments of shipbuilding, building components, machine manufacturing, transportation, energy and the like, and is also used for manufacturing large-diameter welded pipes, containers, boilers, wind power towers and the like. At present, due to the characteristics of complicated specification and small batch of rolled steel medium plate products, plate blanks are various in size, the quantity and specification of hot-charging of the plate blanks are not reliably guaranteed, the medium plate hot plate blanks cannot continuously enter a medium plate heating furnace, so that the medium plate hot plate blanks are retained and cannot timely enter the heating furnace, the hot plate blanks which cannot enter the furnace are required to be stacked outside, the existing hot plate blanks which cannot timely enter the furnace are generally directly stacked outside, good heat preservation measures are not provided, the temperature of the plate blanks can be reduced to room temperature sometimes, loss and waste of heat energy are caused, and energy conservation is not facilitated.
Disclosure of Invention
The invention aims to provide a heat-preservation hot charging method for a steel rolling medium plate blank, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a heat preservation and hot charging method for a steel rolling medium plate blank comprises the following steps:
1: cutting and detecting the medium plate blank after the blank is cast;
2: conveying the high-temperature medium plate blank to a medium plate blank warehouse;
3: putting hot plate blanks which are not in time of entering the furnace into a heat preservation box and stacking;
4: monitoring the temperature of the hot plate blank in the heat insulation box;
5: controlling time and temperature, and charging the hot plate blank;
firstly, cutting a continuous-cast medium plate blank into a size required by processing in a flame cutting mode, detecting the cut hot plate blank, and removing the plate blank with unqualified defects when obvious cracks and a plate blank with a concave surface are found;
the hot plate blank is conveyed to the side of a medium plate heating furnace through a conveying roller through a steelmaking process, wherein a heat insulation cover is arranged on the outer side of a hot plate blank transport vehicle or the conveying roller, so that the loss of heat of the plate blank when the hot plate blank is conveyed by the roller is reduced;
preparing an insulation box for storing cut medium plate blanks, wherein a heating device is arranged in the insulation box, the interior of the insulation box is preheated by the heating device, the preheating is stopped when the temperature in the insulation box reaches 500-plus-material temperature 600 ℃, a high-temperature-resistant temperature sensor is arranged in the insulation box and is used for detecting the temperature of the medium plate blanks stored in the insulation box, the top of the insulation box is in an open design, an insulation cover is arranged at the opening at the top of the insulation box, the hot plate blanks coming into the heating furnace directly enter the heating furnace, the hot plate blanks not coming into the heating furnace are firstly opened, the hot plate blanks are sequentially stacked and loaded into the insulation box from bottom to top by a magnetic crane or a clamp, the temperature of the hot plate blanks initially entering the insulation box is 850-plus-material 900 ℃, the heat of the hot plate blanks is preserved by the cooperation of the insulation box and the insulation cover, so that the hot plate blanks not coming into the furnace are completely sealed in a sealed space formed by the insulation box and the insulation cover, the heat preservation box and the heat preservation cover are both made of high-temperature-resistant heat-insulating materials;
monitoring the temperature of the medium plate blank in the heat insulation box through a temperature sensor, wherein the temperature sensor is connected with an external computer control system, and personnel check the temperature of the medium plate blank in the heat insulation box on line;
the time for feeding the slabs into the furnace again is controlled within 2h-3h, the temperature is kept at 500-700 ℃, and the hot slabs are fed into the heating furnace as far as possible within the range, so that excessive heat loss is prevented.
Compared with the prior art, the invention has the beneficial effects that:
the heat preservation cover is added in the process of conveying the medium plate hot plate blank, so that the heat loss of the hot plate blank in the conveying process is reduced, the efficiency of reducing the heat loss is achieved in the process of conveying the hot plate blank into a medium plate storehouse or directly into a furnace, the energy-saving purpose is achieved, the hot plate blank which is not ready to enter the furnace is put into the heat preservation box, the heat preservation cover is used for sealing and preserving the heat, the interior of the heat preservation box is preheated by the heating device in the heat preservation box before the hot plate blank which is not ready to enter the furnace is put into the heat preservation box, the temperature in the heat preservation box reaches 500-600 ℃, the heat of the hot plate blank which enters the heat preservation box is prevented from being absorbed due to low temperature in the heat preservation box, the risk of heat loss of the hot plate blank which is put into the heat preservation box is reduced, and the heat preservation box and the heat preservation cover are both made of high-temperature-resistant heat-insulating materials, so that the heat energy loss of the hot plate blank which is not ready to be charged into the furnace is greatly reduced, the purpose of energy saving is achieved, the temperature of the hot plate blank in the heat insulation box is monitored on line through the temperature sensor, and workers can know the temperature of the hot plate blank in the heat insulation box conveniently.
Detailed Description
A heat preservation and hot charging method for a steel rolling medium plate blank comprises the following steps:
1: cutting and detecting the medium plate blank after the blank is cast;
2: conveying the high-temperature medium-thickness plate blank to a medium-thickness plate blank warehouse;
3: putting hot plate blanks which are not in time of entering the furnace into a heat preservation box and stacking;
4: monitoring the temperature of the hot plate blank in the heat insulation box;
5: controlling time and temperature, and charging the hot plate blank;
firstly, cutting a continuous-cast medium plate blank into required size by flame cutting, detecting the cut hot plate blank, and removing the plate blank which is unqualified in defect when obvious cracks and surface depressions exist;
the hot plate blank is conveyed to the side of a medium plate heating furnace through a conveying roller through a steelmaking process, wherein a heat insulation cover is arranged on the outer side of a hot plate blank transport vehicle or the conveying roller, so that the loss of the heat of the plate blank when the hot plate blank is conveyed by the roller is reduced;
preparing an incubator for storing cut medium plate blanks, wherein a heating device is arranged in the incubator, the inside of the incubator is preheated by the heating device, the preheating is stopped when the temperature in the incubator reaches 500-600 ℃, a high-temperature-resistant temperature sensor is arranged in the incubator for detecting the temperature of the medium plate blanks stored in the incubator, the top of the incubator is in an open design, an insulation cover is arranged at the opening at the top of the incubator, the hot plate blanks coming into the furnace directly enter the heating furnace, the insulation cover is firstly opened for the hot plate blanks not coming into the heating furnace, the hot plate blanks are sequentially stacked and loaded into the incubator from bottom to top by a magnetic crane or a clamp, the temperature of the hot plate blanks initially entering the incubator is 850-900 ℃, the heat preservation is carried out on the hot plate blanks by the cooperation of the incubator and the insulation cover, so that the hot plate blanks not coming into the furnace are completely sealed in a closed space formed by the incubator and the insulation cover, the heat preservation box and the heat preservation cover are both made of high-temperature-resistant heat-insulation materials;
monitoring the temperature of the medium plate blank in the heat insulation box through a temperature sensor, wherein the temperature sensor is connected with an external computer control system, and personnel check the temperature of the medium plate blank in the heat insulation box on line;
the time for putting the slabs into the furnace again is controlled within 2h-3h, the temperature is kept at 500-700 ℃, and the hot slabs are put into the heating furnace as far as possible within the range, so that the excessive heat loss is prevented.
Claims (1)
1. A heat preservation and hot charging method for a steel rolling medium plate blank is characterized by comprising the following steps:
1): cutting and detecting the medium-thickness plate blank after the blank is cast;
2): conveying the high-temperature medium plate blank to a medium plate blank warehouse;
3): putting hot plate blanks which are not in time of entering the furnace into a heat preservation box and stacking;
4): monitoring the temperature of the hot plate blank in the heat insulation box;
5): controlling time and temperature, and charging the hot plate blank;
firstly, cutting a continuous-cast medium plate blank into a size required by processing in a flame cutting mode, detecting the cut hot plate blank, and removing the plate blank with unqualified defects when obvious cracks and a plate blank with a concave surface are found;
the hot plate blank is conveyed to the side of a medium plate heating furnace through a conveying roller through a steelmaking process, wherein a heat insulation cover is arranged on the outer side of a hot plate blank transport vehicle or the conveying roller, so that the loss of heat of the plate blank when the hot plate blank is conveyed by the roller is reduced;
preparing an insulation box for storing cut medium plate blanks, wherein a heating device is arranged in the insulation box, the interior of the insulation box is preheated by the heating device, the preheating is stopped when the temperature in the insulation box reaches 500-plus-material temperature 600 ℃, a high-temperature-resistant temperature sensor is arranged in the insulation box and is used for detecting the temperature of the medium plate blanks stored in the insulation box, the top of the insulation box is in an open design, an insulation cover is arranged at the opening at the top of the insulation box, the hot plate blanks coming into the heating furnace directly enter the heating furnace, the hot plate blanks not coming into the heating furnace are firstly opened, the hot plate blanks are sequentially stacked and loaded into the insulation box from bottom to top by a magnetic crane or a clamp, the temperature of the hot plate blanks initially entering the insulation box is 850-plus-material 900 ℃, the heat of the hot plate blanks is preserved by the cooperation of the insulation box and the insulation cover, so that the hot plate blanks not coming into the furnace are completely sealed in a sealed space formed by the insulation box and the insulation cover, the heat preservation box and the heat preservation cover are both made of high-temperature-resistant heat-insulating materials;
monitoring the temperature of the medium plate blank in the heat insulation box through a temperature sensor, wherein the temperature sensor is connected with an external computer control system, and personnel check the temperature of the medium plate blank in the heat insulation box on line;
the time for feeding the slabs into the furnace again is controlled within 2h-3h, the temperature is kept at 500-700 ℃, and the hot slabs are fed into the heating furnace as far as possible within the range, so that excessive heat loss is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210775826.XA CN115069998A (en) | 2022-07-03 | 2022-07-03 | Heat-preservation hot charging method for steel rolling medium plate blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210775826.XA CN115069998A (en) | 2022-07-03 | 2022-07-03 | Heat-preservation hot charging method for steel rolling medium plate blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115069998A true CN115069998A (en) | 2022-09-20 |
Family
ID=83257675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210775826.XA Withdrawn CN115069998A (en) | 2022-07-03 | 2022-07-03 | Heat-preservation hot charging method for steel rolling medium plate blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115069998A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861887A (en) * | 2012-09-21 | 2013-01-09 | 广东韶钢松山股份有限公司 | Hot loading method for medium-thick slabs |
| DE102014111501A1 (en) * | 2014-08-12 | 2016-02-18 | Thyssenkrupp Ag | Hot-forming device and method for producing press-hardened molded parts from sheet steel |
| CN105964966A (en) * | 2016-06-30 | 2016-09-28 | 南京钢铁股份有限公司 | Hot delivery and hot charging process for bloom casting blanks |
| CN107671120A (en) * | 2017-09-29 | 2018-02-09 | 四川德胜集团钒钛有限公司 | A kind of continuous casting and rolling production line |
| CN111809028A (en) * | 2019-04-11 | 2020-10-23 | 上海梅山钢铁股份有限公司 | Heating process for avoiding surface defects of steel plate |
| CN112122343A (en) * | 2020-09-09 | 2020-12-25 | 山西云时代太钢信息自动化技术有限公司 | Quick direct-feeding system platform for small-section casting blank |
| CN113634606A (en) * | 2021-08-17 | 2021-11-12 | 山东泰山钢铁集团有限公司 | Operation method for reducing gas consumption |
| CN114346194A (en) * | 2021-12-16 | 2022-04-15 | 包头钢铁（集团）有限责任公司 | Q1100D ultrahigh-strength steel casting method |
-
2022
- 2022-07-03 CN CN202210775826.XA patent/CN115069998A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861887A (en) * | 2012-09-21 | 2013-01-09 | 广东韶钢松山股份有限公司 | Hot loading method for medium-thick slabs |
| DE102014111501A1 (en) * | 2014-08-12 | 2016-02-18 | Thyssenkrupp Ag | Hot-forming device and method for producing press-hardened molded parts from sheet steel |
| CN105964966A (en) * | 2016-06-30 | 2016-09-28 | 南京钢铁股份有限公司 | Hot delivery and hot charging process for bloom casting blanks |
| CN107671120A (en) * | 2017-09-29 | 2018-02-09 | 四川德胜集团钒钛有限公司 | A kind of continuous casting and rolling production line |
| CN111809028A (en) * | 2019-04-11 | 2020-10-23 | 上海梅山钢铁股份有限公司 | Heating process for avoiding surface defects of steel plate |
| CN112122343A (en) * | 2020-09-09 | 2020-12-25 | 山西云时代太钢信息自动化技术有限公司 | Quick direct-feeding system platform for small-section casting blank |
| CN113634606A (en) * | 2021-08-17 | 2021-11-12 | 山东泰山钢铁集团有限公司 | Operation method for reducing gas consumption |
| CN114346194A (en) * | 2021-12-16 | 2022-04-15 | 包头钢铁（集团）有限责任公司 | Q1100D ultrahigh-strength steel casting method |
Non-Patent Citations (1)
| Title |
|---|
| 中国冶金百科全书总编辑委员会《冶金建设》卷编辑委员会: "中国冶金百科全书 冶金建设 上", 31 January 1999, 冶金工业出版社, pages: 1106 - 1107 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220920 |
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| WW01 | Invention patent application withdrawn after publication |