CN113122285A - Special medium-carbon high-alloy steel knife edge for coke oven door sealing device and manufacturing method thereof - Google Patents
Special medium-carbon high-alloy steel knife edge for coke oven door sealing device and manufacturing method thereof Download PDFInfo
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- CN113122285A CN113122285A CN201911414510.2A CN201911414510A CN113122285A CN 113122285 A CN113122285 A CN 113122285A CN 201911414510 A CN201911414510 A CN 201911414510A CN 113122285 A CN113122285 A CN 113122285A
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- steel
- knife edge
- coke oven
- oven door
- temperature
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B25/00—Doors or closures for coke ovens
- C10B25/02—Doors; Door frames
- C10B25/16—Sealing; Means for sealing
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a special medium carbon high alloy steel knife edge for a coke oven door sealing device and a manufacturing method thereof, S1, putting a knife edge material into an electric furnace, controlling the heating temperature of the electric furnace, and then casting qualified round high alloy steel billets by adopting a lost foam; s2, heating the steel billet to 1150-1350 ℃ by adopting a natural gas heating furnace, and then taking out the steel billet; s3, rolling the taken out steel billet into small strip steel; s4, packing the small band steel into bundles, then placing the bundles into a 1200 ℃ high-temperature trolley type heat treatment furnace for heat treatment, heating to 1000-1200 ℃ for high-temperature diffusion treatment, and drawing out after heat preservation for 3-7 hours. The invention can overcome the technical defects of the traditional materials, obtains stable sorbite and troostite metallographic structures through reasonable chemical composition design and heat treatment, has good heat resistance, corrosion resistance, wear resistance, thermal fatigue resistance and deformation resistance, and has great economic benefit and good social benefit.
Description
Technical Field
The invention relates to the technical field of manufacturing of medium-carbon high-alloy steel knife edges, in particular to a medium-carbon high-alloy steel knife edge special for a coke oven door sealing device and a manufacturing method thereof.
Background
The two sides of the carbonization chamber of the coke oven in the coal chemical industry are respectively provided with an oven door sealing device, the sealing effect plays a key role, and the oven door knife edge is an important component of the complete equipment for protecting the oven of the coke oven and plays a vital role in sealing the coke oven. Because the coke oven door is not tightly closed, the fire can be out of the fire and smoke, the heat is lost, and the environment is seriously polluted. The knife edge materials commonly used in the coking industry at home and abroad are 304 stainless steel and 316 stainless steel, which only meet the use requirements of the working condition environment in the aspect of heat resistance, but cannot meet the use requirements in the aspect of mechanical properties. The metallographic structures of the two stainless steel materials are all austenite, the yield strength and the hardness are low, and collision friction is easy to damage and deform when the door is opened and closed and the door is moved. The temperature of the normal working environment of the knife edge on the two sides of the carbonization chamber is 800 ℃, the carbonization chamber is opened when the knife edge is out of the coke, the temperature can be reduced to below 300 ℃ at room temperature, the material of austenite metallographic phase is easily deformed by rapid cooling and rapid heating, a gap exists when the deformed knife edge is closed with a furnace door frame, and fire escape and smoke can occur. In order to supplement the blank, improve the better sealing of the oven door and improve the service performance of the knife edge, the special medium carbon high alloy steel knife edge for the oven door sealing device of the coke oven and the manufacturing method thereof are provided to solve the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a special medium-carbon high-alloy steel knife edge for a coke oven door sealing device and a manufacturing method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the special medium-carbon high-alloy steel knife edge for the coke oven door sealing device comprises C, Mn, Cr, Ni, Mo, V, Ti, Nb, Re, P, Fe and inevitable trace impurities.
Preferably, the method for manufacturing the medium carbon high alloy steel knife edge special for the coke oven door sealing device is characterized by comprising the following steps of:
s1, putting the knife edge material into an electric furnace, controlling the heating temperature of the electric furnace, and then casting qualified round high-alloy steel billets by adopting a lost foam;
s2, heating the steel billet to 1150-1350 ℃ by adopting a natural gas heating furnace, and then taking out the steel billet;
s3, rolling the taken out steel billet into small strip steel;
s4, packing the small band steel into bundles, then placing the bundles into a 1200 ℃ high-temperature trolley type heat treatment furnace for heat treatment, heating to 1000-1200 ℃ for high-temperature diffusion treatment, and drawing out after heat preservation for 3-7 hours;
s5, cooling to room temperature, and then placing into a 900 ℃ car-type heat treatment furnace for high-temperature tempering treatment;
s6, straightening through a straightening machine, feeding the straightened steel blank with the steel into a machining workshop to mill out the edge of the steel, and finally feeding the steel blank into a rivet welding workshop to weld the edge of the oven door of the coke oven;
and S7, after the assembly welding is finished, performing heat treatment to eliminate welding residual stress, and after the welding stress is eliminated, polishing and storing in a warehouse.
Preferably, the small strip steel has the size of 8mm multiplied by 80mm multiplied by 12000 mm.
Preferably, the high-temperature tempering treatment heats the small strip steel to 700-900 ℃, keeps the temperature for 3-7 hours, and then pulls out and cools the small strip steel to room temperature.
Preferably, a 250-roller mill is adopted when the steel strip is rolled.
Compared with the prior art, the invention has the beneficial effects that:
1. the technical defects of the traditional material can be overcome, and the stable sorbite and troostite metallographic structures can be obtained through reasonable chemical composition design and heat treatment;
2. the material has good heat resistance, corrosion resistance, wear resistance, thermal fatigue resistance and deformation resistance, and has great economic benefit and good social benefit;
in conclusion, the invention can overcome the technical defects of the traditional materials, and obtains stable sorbite and troostite metallographic structures through reasonable chemical composition design and heat treatment.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
The invention comprises a medium-carbon high-alloy steel knife edge special for a coke oven door sealing device, wherein the coke oven door knife edge comprises C, Mn, Cr, Ni, Mo, V, Ti, Nb, Re, P, Fe and inevitable trace impurities.
The invention also comprises a manufacturing method of the special medium carbon high alloy steel knife edge for the coke oven door sealing device, which is characterized by comprising the following steps:
s1, putting the knife edge material into an electric furnace, controlling the heating temperature of the electric furnace, and then casting qualified round high-alloy steel billets by adopting a lost foam;
s2, heating the steel billet to 1150-1350 ℃ by adopting a natural gas heating furnace, and then taking out the steel billet;
s3, rolling the taken-out billet into small strip steel with the diameter of 8mm multiplied by 80mm multiplied by 12000mm by a 250 rolling mill;
s4, packing the small band steel into bundles, then placing the bundles into a 1200 ℃ high-temperature trolley type heat treatment furnace for heat treatment, heating to 1000-1200 ℃ for high-temperature diffusion treatment, and drawing out after heat preservation for 3-7 hours;
s5, cooling to room temperature, putting the mixture into a 900 ℃ car-type heat treatment furnace for high-temperature tempering treatment, heating to 700-900 ℃, preserving heat for 3-7 hours, and then drawing out and cooling to room temperature;
s6, straightening through a straightening machine, feeding the straightened steel blank with the steel into a machining workshop to mill out the edge of the steel, and finally feeding the steel blank into a rivet welding workshop to weld the edge of the oven door of the coke oven;
and S7, after the assembly welding is finished, performing heat treatment to eliminate welding residual stress, and after the welding stress is eliminated, polishing and storing in a warehouse.
Example 2
The invention comprises a medium-carbon high-alloy steel knife edge special for a coke oven door sealing device, wherein the coke oven door knife edge comprises C, Mn, Cr, Ni, Mo, V, Ti, Nb, Re, P, Fe and inevitable trace impurities.
The invention also comprises a manufacturing method of the special medium carbon high alloy steel knife edge for the coke oven door sealing device, which is characterized by comprising the following steps:
s1, putting the knife edge material into an electric furnace, controlling the heating temperature of the electric furnace, and then casting qualified round high-alloy steel billets by adopting a lost foam;
s2, heating the steel billet to 1200-1300 ℃ by adopting a natural gas heating furnace, and then taking out the steel billet;
s3, rolling the taken-out billet into small strip steel with the diameter of 8mm multiplied by 80mm multiplied by 12000mm by a 250 rolling mill;
s4, packing the small band steel into bundles, then placing the bundles into a 1200 ℃ high-temperature trolley type heat treatment furnace for heat treatment, heating to 1050-1150 ℃ for high-temperature diffusion treatment, and pulling out after heat preservation for 4-6 hours;
s5, cooling to room temperature, putting the mixture into a 900 ℃ car-type heat treatment furnace for high-temperature tempering treatment, heating to 750-850 ℃, preserving heat for 4-6 hours, and then drawing out and cooling to room temperature;
s6, straightening through a straightening machine, feeding the straightened steel blank with the steel into a machining workshop to mill out the edge of the steel, and finally feeding the steel blank into a rivet welding workshop to weld the edge of the oven door of the coke oven;
and S7, after the assembly welding is finished, performing heat treatment to eliminate welding residual stress, and after the welding stress is eliminated, polishing and storing in a warehouse.
Example 3
The invention comprises a medium-carbon high-alloy steel knife edge special for a coke oven door sealing device, wherein the coke oven door knife edge comprises C, Mn, Cr, Ni, Mo, V, Ti, Nb, Re, P, Fe and inevitable trace impurities.
The invention also comprises a manufacturing method of the special medium carbon high alloy steel knife edge for the coke oven door sealing device, which is characterized by comprising the following steps:
s1, putting the knife edge material into an electric furnace, controlling the heating temperature of the electric furnace, and then casting qualified round high-alloy steel billets by adopting a lost foam;
s2, heating the steel billet to 1250 ℃ by adopting a natural gas heating furnace, and then taking out the steel billet;
s3, rolling the taken-out billet into small strip steel with the diameter of 8mm multiplied by 80mm multiplied by 12000mm by a 250 rolling mill;
s4, packing the small band steel into bundles, then placing the bundles into a 1200 ℃ high-temperature trolley type heat treatment furnace for heat treatment, heating to 1100 ℃ for high-temperature diffusion treatment, and pulling out after heat preservation for 5 hours;
s5, cooling to room temperature, putting the mixture into a 900 ℃ car-type heat treatment furnace for high-temperature tempering treatment, heating to 800 ℃, preserving heat for 5 hours, pulling out and cooling to room temperature;
s6, straightening through a straightening machine, feeding the straightened steel blank with the steel into a machining workshop to mill out the edge of the steel, and finally feeding the steel blank into a rivet welding workshop to weld the edge of the oven door of the coke oven;
and S7, after the assembly welding is finished, performing heat treatment to eliminate welding residual stress, and after the welding stress is eliminated, polishing and storing in a warehouse.
When the invention is used, the edge material is put into an electric furnace, the heating temperature of the electric furnace is controlled, then a circular high-alloy steel billet which is qualified is cast by using a lost foam, the steel billet is heated to 1250 ℃ by using a natural gas heating furnace, then the steel billet is taken out, the taken-out steel billet is rolled into small strip steel with the thickness of 8mm multiplied by 80mm multiplied by 12000mm by using a 250 rolling mill, the small strip steel is packed into a bundle and then put into a 1200 ℃ high temperature trolley type heat treatment furnace for heat treatment, the small strip steel is heated to 1100 ℃ for high temperature diffusion treatment, the steel billet is pulled out after heat preservation is carried out for 5 hours, the steel billet is cooled to room temperature and then put into a 900 ℃ trolley type heat treatment furnace for high temperature tempering treatment, the steel billet is heated to 800 ℃ and then is cooled to room temperature after heat preservation is carried out for 5 hours, straightening is carried out by a straightener, the straightened strip steel billet is then put into a machining workshop to mill the, and after the welding stress is eliminated, polishing and polishing are carried out, and the product is put into a warehouse for storage.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides a special well carbon high alloy steel sword limit of coke oven furnace gate sealing device which characterized in that: the coke oven door knife edge comprises C, Mn, Cr, Ni, Mo, V, Ti, Nb, Re, P, Fe and inevitable trace impurities.
2. The manufacturing method of the special medium carbon high alloy steel knife edge for the coke oven door sealing device is characterized by comprising the following steps of:
s1, putting the knife edge material into an electric furnace, controlling the heating temperature of the electric furnace, and then casting qualified round high-alloy steel billets by adopting a lost foam;
s2, heating the steel billet to 1150-1350 ℃ by adopting a natural gas heating furnace, and then taking out the steel billet;
s3, rolling the taken out steel billet into small strip steel;
s4, packing the small band steel into bundles, then placing the bundles into a 1200 ℃ high-temperature trolley type heat treatment furnace for heat treatment, heating to 1000-1200 ℃ for high-temperature diffusion treatment, and drawing out after heat preservation for 3-7 hours;
s5, cooling to room temperature, and then placing into a 900 ℃ car-type heat treatment furnace for high-temperature tempering treatment;
s6, straightening through a straightening machine, feeding the straightened steel blank with the steel into a machining workshop to mill out the edge of the steel, and finally feeding the steel blank into a rivet welding workshop to weld the edge of the oven door of the coke oven;
and S7, after the assembly welding is finished, performing heat treatment to eliminate welding residual stress, and after the welding stress is eliminated, polishing and storing in a warehouse.
3. The method for manufacturing the medium carbon high alloy steel knife edge special for the coke oven door sealing device of claim 2, wherein the size of the small strip steel is 8mm x 80mm x 12000 mm.
4. The manufacturing method of the medium carbon high alloy steel knife edge special for the coke oven door sealing device according to claim 2, characterized in that the high temperature tempering treatment heats the small strip steel to 700-900 ℃, keeps the temperature for 3-7 hours, and then pulls out and cools the small strip steel to room temperature.
5. The manufacturing method of the medium carbon high alloy steel knife edge special for the coke oven door sealing device of claim 2, characterized in that a 250-degree rolling mill is adopted when rolling the steel strip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414510.2A CN113122285B (en) | 2019-12-31 | 2019-12-31 | Special medium-carbon high-alloy steel knife edge for coke oven door sealing device and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414510.2A CN113122285B (en) | 2019-12-31 | 2019-12-31 | Special medium-carbon high-alloy steel knife edge for coke oven door sealing device and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN113122285A true CN113122285A (en) | 2021-07-16 |
| CN113122285B CN113122285B (en) | 2022-09-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3179394A (en) * | 1963-09-11 | 1965-04-20 | Wilson Eng Co Inc Lee | Solid seal for inner covers |
| CN2219892Y (en) * | 1995-03-22 | 1996-02-14 | 冶金工业部鞍山焦化耐火材料设计研究院 | L-type elastic knife-edge spring door bolt linkage-mounted door for coke oven |
| CN102876991A (en) * | 2012-09-24 | 2013-01-16 | 无锡市方正金属捆带有限公司 | Method for manufacturing stainless steel band for spinner reed |
| CN103194662A (en) * | 2013-04-24 | 2013-07-10 | 黎城恒泰精密铸造有限公司 | Medium-carbon high-chromium-alloy cast steel lining plate for water quenching vehicle and manufacturing method thereof |
| CN105908097A (en) * | 2016-06-30 | 2016-08-31 | 合肥慧林建材有限公司 | Heat-resisting steel pipe and production technology thereof |
-
2019
- 2019-12-31 CN CN201911414510.2A patent/CN113122285B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3179394A (en) * | 1963-09-11 | 1965-04-20 | Wilson Eng Co Inc Lee | Solid seal for inner covers |
| CN2219892Y (en) * | 1995-03-22 | 1996-02-14 | 冶金工业部鞍山焦化耐火材料设计研究院 | L-type elastic knife-edge spring door bolt linkage-mounted door for coke oven |
| CN102876991A (en) * | 2012-09-24 | 2013-01-16 | 无锡市方正金属捆带有限公司 | Method for manufacturing stainless steel band for spinner reed |
| CN103194662A (en) * | 2013-04-24 | 2013-07-10 | 黎城恒泰精密铸造有限公司 | Medium-carbon high-chromium-alloy cast steel lining plate for water quenching vehicle and manufacturing method thereof |
| CN105908097A (en) * | 2016-06-30 | 2016-08-31 | 合肥慧林建材有限公司 | Heat-resisting steel pipe and production technology thereof |
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| CN113122285B (en) | 2022-09-02 |
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