CN108067702A - A kind of continuous casting steel billet Synergistic and energy-saving cutting method - Google Patents
A kind of continuous casting steel billet Synergistic and energy-saving cutting method Download PDFInfo
- Publication number
- CN108067702A CN108067702A CN201711330137.3A CN201711330137A CN108067702A CN 108067702 A CN108067702 A CN 108067702A CN 201711330137 A CN201711330137 A CN 201711330137A CN 108067702 A CN108067702 A CN 108067702A
- Authority
- CN
- China
- Prior art keywords
- synergistic
- energy
- saving
- cutting
- continuous casting
- 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.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 80
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 43
- 239000010959 steel Substances 0.000 title claims abstract description 43
- 238000009749 continuous casting Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000001301 oxygen Substances 0.000 claims abstract description 43
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 43
- 239000000567 combustion gas Substances 0.000 claims abstract description 25
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical group CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 239000003345 natural gas Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 150000001298 alcohols Chemical class 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 2
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000003796 beauty Effects 0.000 abstract description 2
- 239000003500 flue dust Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The present invention relates to a kind of continuous casting steel billet cutting method, more particularly to a kind of continuous casting steel billet Synergistic and energy-saving cutting method.Include the following steps：The first step：Adjust the distance of cutting torch and continuous casting steel billet；Second step：Preheating oxygen enters cutting torch by preheating oxygen hole road, and Synergistic and energy-saving combustion gas enters cutting torch by Synergistic and energy-saving combustion gas duct, and cutting oxygen enters cutting torch by cutting oxygen duct；3rd step：Preheating oxygen pressure is arranged to 0.2-0.3mpa, Synergistic and energy-saving gaseous-pressure is arranged to 0.02 0.1mpa, cutting oxygen pressure is arranged to 1-1.2mpa, is cut.The cutting method of the present invention can save combustion gas more than 60%, it can reach 80% or so, oxygen saves 40%, steel slot width reduces about 50%, production efficiency improves 30% or so, and CO2 emission reduces more than 60%, and live flue dust reduces 50%, steel cutting surfaces are bright and clean, dross are burnt down without undercut, without carburetting and hardening phenomenon, and steel cut section beauty.
Description
Technical field
The present invention relates to a kind of continuous casting steel billet cutting method, more particularly to a kind of continuous casting steel billet Synergistic and energy-saving cutting method.
Background technology
Gas flame cuttiug refers to industrial combustion gas and oxygen mix are burnt to and reached the required temperature of cutting, to steel material
Carry out the process that slag and segmentation are blown in fusing.Specific method is that cut metal is preheating to and can acutely be fired using industrial combustion gas
The burning point of burning, then by releasing hyperbaric oxygen air-flow, making the further vigorous oxidation of metal and blowing the slag for generation of burning off shape
Into the process of notch.At present, the industrial combustion gas used is sent out for propane flammable gas, natural gas or blast furnace gas etc. during use
It is existing, using above-mentioned industrial combustion gas during the cutting to steel billet combustion gas, oxygen save degree is not high enough, steel waste compared with
Greatly.Also, the continuous casting steel billet cutting of current international and domestic iron and steel enterprise, generally cuts using the tradition for having continued recent decades
Mouth, although deriving a variety of cutting torch such as many divergent bore nozzle, inserted cutting torch, split type equal-pressure cutting torchs in recent years,
Still occur that steel cutting surfaces are coarse, undercut burns down dross, carburetting and hardening phenomenon during use, cause steel
Cut section unsightly.
The content of the invention
To solve the shortcomings of the prior art, the present invention provides a kind of cast steel base Synergistic and energy-saving cutting method.
The technical scheme is that：
A kind of continuous casting steel billet Synergistic and energy-saving cutting method, includes the following steps：
The first step：Adjust the distance of cutting torch and continuous casting steel billet；
Second step：Preheating oxygen enters cutting torch by preheating oxygen hole road, and Synergistic and energy-saving combustion gas passes through Synergistic and energy-saving combustion gas duct
Into cutting torch, cutting oxygen enters cutting torch by cutting oxygen duct；
3rd step：Preheating oxygen pressure is arranged to 0.2-0.3mpa, Synergistic and energy-saving gaseous-pressure is arranged to 0.02-
Cutting oxygen pressure is arranged to 1-1.2mpa, is cut by 0.1mpa.
Further, the Synergistic and energy-saving combustion gas is mixed by the raw material of following weight percent：Natural gas 99.1%-
99.3%th, synergist 7 ‰ -9 ‰；The synergist includes each component of following weight percent：Low-carbon alcohols 35-45%, high-carbon
Alcohol 25-35%, lower member ester 20-40%.
Further, the low-carbon alcohols are methanol.
Further, the lower member ester is ethyl acetate or methyl acetate.
Further, the cutting torch includes 12 holes or 21 holes, the aperture in the hole are arranged to 0.6-0.8mm.
Further, when the thickness of continuous casting steel billet<During 500mm, the Synergistic and energy-saving gaseous-pressure is arranged to 0.02-
0.08mpa。
Further, as thickness >=500mm of continuous casting steel billet, the Synergistic and energy-saving gaseous-pressure is arranged to 0.08-
0.1mpa。
Further, the distance of the cutting torch and continuous casting steel billet is arranged to 30-50mm in the first step.
The beneficial effects of the invention are as follows：
The cutting method of the present invention can save combustion gas more than 60%, can reach 80% or so, and oxygen saves 40%,
Steel slot width reduces about 50%, and production efficiency improves 30% or so, and CO2 emission reduces more than 60%, live flue dust
50% is reduced, steel cutting surfaces are bright and clean, dross are burnt down without undercut, without carburetting and hardening phenomenon, and steel cut section beauty.
Description of the drawings
Fig. 1 is the structure diagram of 12 hole cutting torch in the present invention.
Fig. 2 is the cross-sectional view of 12 hole cutting torch in the present invention.
Fig. 3 is the structure diagram of 21 hole cutting torch in the present invention.
Fig. 4 is the cross-sectional view of 21 hole cutting torch in the present invention.
Wherein, 1, Synergistic and energy-saving combustion gas duct；2nd, oxygen duct is cut；3rd, preheating oxygen hole road.
Specific embodiment
The present invention is described in more details below, but it is not as a limitation of the invention.
Embodiment 1
A kind of continuous casting steel billet Synergistic and energy-saving cutting method, includes the following steps：
The first step：The distance for adjusting cutting torch and continuous casting steel billet is 30mm；
Second step：Oxygen is preheated by preheating oxygen hole road 3 into cutting torch, Synergistic and energy-saving combustion gas passes through Synergistic and energy-saving combustion gas duct
1 enters cutting torch, and cutting oxygen is by cutting oxygen duct 2 into cutting torch；
3rd step：Preheating oxygen pressure is arranged to 0.2mpa, Synergistic and energy-saving gaseous-pressure is arranged to 0.02mpa, will be cut
It cuts oxygen pressure and is arranged to 1mpa, cut.
The Synergistic and energy-saving combustion gas is mixed by the raw material of following weight percent：Natural gas 99.1%, synergist
9‰；The synergist includes each component of following weight percent：Methanol 35%, higher alcohols 25%, ethyl acetate 40%.
As illustrated in fig. 1 and 2, the cutting torch includes 12 holes, and the aperture in the hole is arranged to 0.8mm.
Embodiment 2
A kind of continuous casting steel billet Synergistic and energy-saving cutting method, includes the following steps：
The first step：The distance for adjusting cutting torch and continuous casting steel billet is 40mm；
Second step：Oxygen is preheated by preheating oxygen hole road 3 into cutting torch, Synergistic and energy-saving combustion gas passes through Synergistic and energy-saving combustion gas duct
1 enters cutting torch, and cutting oxygen is by cutting oxygen duct 2 into cutting torch；
3rd step：Preheating oxygen pressure is arranged to 0.25mpa, Synergistic and energy-saving gaseous-pressure is arranged to 0.05mpa, will be cut
It cuts oxygen pressure and is arranged to 1.1mpa, cut.
The Synergistic and energy-saving combustion gas is mixed by the raw material of following weight percent：Natural gas 99.2%, synergist
8‰；The synergist includes each component of following weight percent：Methanol 40%, higher alcohols 30%, ethyl acetate 30%.
As illustrated in fig. 1 and 2, the cutting torch includes 12 holes, and the aperture in the hole is arranged to 0.8mm.
Embodiment 3
A kind of continuous casting steel billet Synergistic and energy-saving cutting method, includes the following steps：
The first step：The distance for adjusting cutting torch and continuous casting steel billet is 50mm；
Second step：Preheating oxygen enters cutting torch by preheating oxygen hole road, and Synergistic and energy-saving combustion gas passes through Synergistic and energy-saving combustion gas duct
Into cutting torch, cutting oxygen enters cutting torch by cutting oxygen duct；
3rd step：Preheating oxygen pressure is arranged to 0.3mpa, Synergistic and energy-saving gaseous-pressure is arranged to 0.1mpa, will be cut
Oxygen pressure is arranged to 1.2mpa, is cut.
The Synergistic and energy-saving combustion gas is mixed by the raw material of following weight percent：Natural gas 99.2%, synergist
8‰；The synergist includes each component of following weight percent：Methanol 45%, higher alcohols 35%, ethyl acetate 20%.
As shown in Figures 3 and 4, the cutting torch includes 21 holes, and the aperture in the hole is arranged to 0.6mm.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the claim protection model of the present invention
Within enclosing.
Claims (8)
1. a kind of continuous casting steel billet Synergistic and energy-saving cutting method, which is characterized in that include the following steps：
The first step：Adjust the distance of cutting torch and continuous casting steel billet；
Second step：Preheating oxygen enters cutting torch by preheating oxygen hole road, and Synergistic and energy-saving combustion gas is entered by Synergistic and energy-saving combustion gas duct
Cutting torch, cutting oxygen enter cutting torch by cutting oxygen duct；
3rd step：Preheating oxygen pressure is arranged to 0.2-0.3mpa, Synergistic and energy-saving gaseous-pressure is arranged to 0.02-0.1mpa,
Cutting oxygen pressure is arranged to 1-1.2mpa, is cut.
2. a kind of continuous casting steel billet Synergistic and energy-saving cutting method according to claim 1, it is characterised in that：The Synergistic and energy-saving
Combustion gas is mixed by the raw material of following weight percent：Natural gas 99.1%-99.3%, synergist 7 ‰ -9 ‰；The synergy
Agent includes each component of following weight percent：Low-carbon alcohols 35-45%, higher alcohols 25-35%, lower member ester 20-40%.
3. a kind of continuous casting steel billet Synergistic and energy-saving cutting method according to claim 2, it is characterised in that：The low-carbon alcohols are
Methanol.
4. a kind of continuous casting steel billet Synergistic and energy-saving cutting method according to claim 2, it is characterised in that：The lower member ester is
Ethyl acetate or methyl acetate.
5. a kind of continuous casting steel billet Synergistic and energy-saving cutting method according to claim 1, it is characterised in that：When continuous casting steel billet
Thickness<During 500mm, the Synergistic and energy-saving gaseous-pressure is arranged to 0.02-0.08mpa.
6. a kind of continuous casting steel billet Synergistic and energy-saving cutting method according to claim 1, it is characterised in that：When continuous casting steel billet
During thickness >=500mm, the Synergistic and energy-saving gaseous-pressure is arranged to 0.08-0.1mpa.
7. a kind of continuous casting steel billet Synergistic and energy-saving cutting method according to claim 1, it is characterised in that：The cutting torch includes
12 holes or 21 holes, the aperture in the hole are arranged to 0.6-0.8mm.
8. a kind of continuous casting steel billet Synergistic and energy-saving cutting method according to claim 1, it is characterised in that：In the first step will
The distance of the cutting torch and continuous casting steel billet is arranged to 30-50mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711330137.3A CN108067702B (en) | 2017-12-13 | 2017-12-13 | A kind of continuous casting steel billet Synergistic and energy-saving cutting method |
| PCT/CN2018/085996 WO2019114184A1 (en) | 2017-12-13 | 2018-05-08 | Effect-increasing and energy-saving cutting method for continuous casting steel blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711330137.3A CN108067702B (en) | 2017-12-13 | 2017-12-13 | A kind of continuous casting steel billet Synergistic and energy-saving cutting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108067702A true CN108067702A (en) | 2018-05-25 |
| CN108067702B CN108067702B (en) | 2019-08-23 |
Family
ID=62158256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711330137.3A Active CN108067702B (en) | 2017-12-13 | 2017-12-13 | A kind of continuous casting steel billet Synergistic and energy-saving cutting method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108067702B (en) |
| WO (1) | WO2019114184A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713856A (en) * | 2019-10-25 | 2020-01-21 | 崔旭 | Flame cutting gas using natural gas as raw material |
| CN111001894A (en) * | 2019-11-11 | 2020-04-14 | 苏德祥 | Steel energy-saving cutting method capable of judging cutting quality |
| CN113732259A (en) * | 2021-09-26 | 2021-12-03 | 鞍山阳天冶金能源技术有限公司 | Industrial gas cutting nozzle with cutting oxygen flow velocity of 2.3 Mach and cutting process |
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| JP2005059017A (en) * | 2003-08-19 | 2005-03-10 | Nippon Steel Corp | Steel cutting method |
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2017
- 2017-12-13 CN CN201711330137.3A patent/CN108067702B/en active Active
-
2018
- 2018-05-08 WO PCT/CN2018/085996 patent/WO2019114184A1/en active Application Filing
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| JP2005059017A (en) * | 2003-08-19 | 2005-03-10 | Nippon Steel Corp | Steel cutting method |
| CN103710061A (en) * | 2012-09-29 | 2014-04-09 | 天津滨海新区金火焰科技有限公司 | Synergistic additive special for natural gas |
| CN102922079A (en) * | 2012-10-23 | 2013-02-13 | 秦皇岛首秦金属材料有限公司 | Method for quick opening large-chamfer casting blank during cutting |
| CN203364133U (en) * | 2013-06-19 | 2013-12-25 | 上海骐瑄智能科技有限公司 | Improved energy-saving cutting torch |
| KR20150007748A (en) * | 2013-07-12 | 2015-01-21 | 주식회사 포스코 | Apparatus for cutting object to be processed and method for cutting object to be processed |
| CN104668709A (en) * | 2013-11-28 | 2015-06-03 | 天津兴船重机装备有限公司 | Process for cutting thick steel plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713856A (en) * | 2019-10-25 | 2020-01-21 | 崔旭 | Flame cutting gas using natural gas as raw material |
| CN111001894A (en) * | 2019-11-11 | 2020-04-14 | 苏德祥 | Steel energy-saving cutting method capable of judging cutting quality |
| CN113732259A (en) * | 2021-09-26 | 2021-12-03 | 鞍山阳天冶金能源技术有限公司 | Industrial gas cutting nozzle with cutting oxygen flow velocity of 2.3 Mach and cutting process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108067702B (en) | 2019-08-23 |
| WO2019114184A1 (en) | 2019-06-20 |
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