CN102914174A - Furnace dredging method for avoiding accretion on furnace bottom roller of non-oxidation heat treatment furnace - Google Patents
Furnace dredging method for avoiding accretion on furnace bottom roller of non-oxidation heat treatment furnace Download PDFInfo
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- CN102914174A CN102914174A CN2012103914392A CN201210391439A CN102914174A CN 102914174 A CN102914174 A CN 102914174A CN 2012103914392 A CN2012103914392 A CN 2012103914392A CN 201210391439 A CN201210391439 A CN 201210391439A CN 102914174 A CN102914174 A CN 102914174A
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Abstract
The invention relates to a furnace dredging method of a heat treatment furnace, in particular to a furnace dredging method for avoiding accretion on a furnace bottom roller of a non-oxidation heat treatment furnace; and the furnace dredging method is carried out in the following steps of: emptying a furnace steel plate when the furnace temperature is higher than 800 DEG C; opening a material loading furnace door and a material discharging furnace door; conveying a shot-blasted furnace dredging steel plate into the furnace from the material loading furnace door through a conveying roller way; when the head part of the furnace dredging steel plate reaches the position of the material discharging furnace door, changing an advancing direction of the furnace dredging steel plate from a forward direction into a reverse direction; when the tail part of the furnace dredging steel plate reaches the position of the material loading furnace door, changing the advancing direction of the furnace dredging steel plate from the reverse direction into the forward direction; and circulating the above process for three times. The furnace dredging method provided by the invention is used when the furnace temperature is higher than 800 DEG C; through the adoption of a theorem that heat ductility and volume of steel are invariable, a soft scale is rolled into a thinner substance, which is closely laminated with a roller body, by means of the dead weight of a thick plate at a high temperature, so that point contact is enlarged into surface contact and influences of the accretion of a furnace roller on the lower surface of the steel plate are relieved.
Description
Technical field
The present invention relates to the logical stove method of heat-treatment furnace, a kind of non-oxidation heat processing furnace prevents the logical stove method of furnace hearth roller salamander specifically.
Background technology
The steel plate following table of roller hearth type non-oxidation heat-treatment furnace generation iron scale adheres on the furnace roller in normal productive process, and iron scale is pressurized repeatedly, forms beans shape or sheet foreign matter and is pinned at the furnace roller surface, and roller-way contacts with steel plate again, causes the defective of steel plate following table.In the prior art, it is about 400 ℃ that the cooling of employing drags the furnace operating method to need furnace temperature, and consuming time more than 17h, has affected the performance of normal heat processing production capacity.
Summary of the invention
Technical problem to be solved by this invention is that the shortcoming for above prior art exists proposes the logical stove method that a kind of non-oxidation heat processing furnace prevents furnace hearth roller salamander, can alleviate the furnace roller dross to the impact of steel plate following table.
The technical scheme that the present invention solves above technical problem is:
Non-oxidation heat processing furnace prevents the logical stove method of furnace hearth roller salamander, carries out according to the following steps:
⑴ when be higher than 800 ℃ in furnace temperature, steel plate in the stove is emptied, to feed fire door and discharging door opened, the logical stove steel plate that ball blast is good is sent in the stove from the charging fire door by rollgang, logical stove steel plate head is introduced in the stove, and it is positive direction that the logical stove steel plate of setting advances the stove direction, and positive direction is to point to the discharging door direction along the charging fire door, setting logical stove steel plate and come out of the stove direction in the other direction, is to point to charging fire door direction along discharging door in the other direction;
⑵ when arrive the discharging door position when logical stove steel plate head, will lead to stove steel plate direct of travel and be changed in the other direction by positive direction, when logical stove steel plate afterbody arrives charging fire door position, will lead to again stove steel plate direct of travel by changing positive direction in the other direction, so circulate 3 times;
⑶ after step ⑵ knot finishes, will lead to the stove steel plate and be transported to cold bed from discharging door, again the front and back fire door be closed, logical furnace accretion bundle.
The technical scheme that the present invention further limits is:
Aforesaid non-oxidation heat processing furnace prevents the logical stove method of furnace hearth roller salamander, and logical stove plate gauge lattice are 80mm*2300mm*7000mm.
Aforesaid non-oxidation heat processing furnace prevents the logical stove method of furnace hearth roller salamander, and logical stove steel plate speed with 20m/min in stove is advanced repeatedly.
The invention has the beneficial effects as follows: the logical stove method of ⑴ the present invention is higher than 800 ℃ and above use in furnace temperature, utilize high-temperature ductility and the constancy of volume theorem of steel, at high temperature utilize the slab deadweight iron scale of softness to be rolled into the material of the thinner thickness that fits tightly with the body of roll, to put contact and expand as the face contact, alleviate the furnace roller dross to the impact of steel plate following table.⑵ the logical stove plate that the present invention uses is the common level and smooth steel plate of upper and lower surface, it is that lower surface is through the steel plate of special processing that normally used low temperature drags the stove plate, the stove deleterious is dragged in the wearing and tearing of (general 20 times) following table after dragging the stove plate to use a period of time, and the technology of the present invention relies on logical stove plate gravity generation effect, does not have situation about shortening service life.⑶ the technology of the present invention 25min-30min consuming time, normally used low temperature drag stove 15h consuming time directly to cause production capacity to reduce 348t.
The specific embodiment
Embodiment 1
Non-oxidation heat processing furnace prevents the logical stove method of furnace hearth roller salamander, carries out according to the following steps:
⑴ when be higher than 800 ℃ in furnace temperature, steel plate in the stove is emptied, to feed fire door and discharging door opened, the logical stove steel plate that ball blast is good is sent in the stove from the charging fire door by rollgang, and logical stove plate gauge lattice are 80mm*2300mm*7000mm, and logical stove steel plate head is introduced in the stove, it is positive direction that the logical stove steel plate of setting advances the stove direction, positive direction is to point to the discharging door direction along the charging fire door, sets logical stove steel plate and comes out of the stove direction in the other direction, and be to point to charging fire door direction along discharging door in the other direction;
⑵ when arrive the discharging door position when logical stove steel plate head, to lead to stove steel plate direct of travel is changed in the other direction by positive direction, when logical stove steel plate afterbody arrives charging fire door position, to lead to again stove steel plate direct of travel by changing positive direction in the other direction into, so circulation is 3 times, and logical stove steel plate speed with 20m/min in stove is advanced repeatedly;
⑶ after step ⑵ knot finishes, will lead to the stove steel plate and be transported to cold bed from discharging door, again the front and back fire door be closed, logical furnace accretion bundle.
The logical stove method of the present invention is higher than 800 ℃ and above use in furnace temperature, utilize high-temperature ductility and the constancy of volume theorem of steel, at high temperature utilize the slab deadweight iron scale of softness to be rolled into the material of the thinner thickness that fits tightly with the body of roll, to put contact and expand as the face contact, alleviate the furnace roller dross to the impact of steel plate following table.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (3)
1. non-oxidation heat processing furnace prevents the logical stove method of furnace hearth roller salamander, it is characterized in that: carry out according to the following steps:
⑴ when be higher than 800 ℃ in furnace temperature, steel plate in the stove is emptied, to feed fire door and discharging door opened, the logical stove steel plate that ball blast is good is sent in the stove from the charging fire door by rollgang, logical stove steel plate head is introduced in the stove, and it is positive direction that the logical stove steel plate of setting advances the stove direction, and described positive direction is to point to the discharging door direction along the charging fire door, set logical stove steel plate and come out of the stove direction in the other direction, described opposite direction is to point to charging fire door direction along discharging door;
⑵ when arrive the discharging door position when logical stove steel plate head, will lead to stove steel plate direct of travel and be changed in the other direction by positive direction, when logical stove steel plate afterbody arrives charging fire door position, will lead to again stove steel plate direct of travel by changing positive direction in the other direction, so circulate 3 times;
⑶ after step ⑵ knot finishes, will lead to the stove steel plate and be transported to cold bed from discharging door, again the front and back fire door be closed, logical furnace accretion bundle.
2. non-oxidation heat processing furnace as claimed in claim 1 prevents the logical stove method of furnace hearth roller salamander, it is characterized in that: described logical stove plate gauge lattice are 80mm*2300mm*7000mm.
3. non-oxidation heat processing furnace as claimed in claim 1 prevents the logical stove method of furnace hearth roller salamander, it is characterized in that: described logical stove steel plate speed with 20m/min in stove is advanced repeatedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103914392A CN102914174A (en) | 2012-10-16 | 2012-10-16 | Furnace dredging method for avoiding accretion on furnace bottom roller of non-oxidation heat treatment furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103914392A CN102914174A (en) | 2012-10-16 | 2012-10-16 | Furnace dredging method for avoiding accretion on furnace bottom roller of non-oxidation heat treatment furnace |
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| CN102914174A true CN102914174A (en) | 2013-02-06 |
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| CN2012103914392A Pending CN102914174A (en) | 2012-10-16 | 2012-10-16 | Furnace dredging method for avoiding accretion on furnace bottom roller of non-oxidation heat treatment furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878187A (en) * | 2015-05-27 | 2015-09-02 | 北京首钢股份有限公司 | Accretion removing method |
| CN108118131A (en) * | 2017-11-27 | 2018-06-05 | 山东钢铁股份有限公司 | A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross |
| CN109489430A (en) * | 2018-09-05 | 2019-03-19 | 宝钢特钢韶关有限公司 | A method of removal heating furnace water beam pad block dross |
| CN113267058A (en) * | 2021-05-20 | 2021-08-17 | 中天钢铁集团有限公司 | Method for removing nodules on heat-resistant sliding block of walking beam of heat storage type heating furnace |
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| JPH0941173A (en) * | 1995-07-31 | 1997-02-10 | Nkk Corp | Production of hot rolled steel plate excellent in surface quality |
| JPH0970611A (en) * | 1995-06-30 | 1997-03-18 | Kawasaki Steel Corp | Descaling method for hot rolled steel plate |
| CN101968320A (en) * | 2010-09-30 | 2011-02-09 | 南京钢铁股份有限公司 | Method for removing salamander from hearth roller of roller-hearth non-oxidation furnace |
| CN102636041A (en) * | 2012-03-27 | 2012-08-15 | 马钢(集团)控股有限公司 | Continuous heat treatment furnace with function of clearing metal accretions on furnace rollers and process method for clearing accretions on furnace rollers |
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2012
- 2012-10-16 CN CN2012103914392A patent/CN102914174A/en active Pending
Patent Citations (4)
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| JPH0970611A (en) * | 1995-06-30 | 1997-03-18 | Kawasaki Steel Corp | Descaling method for hot rolled steel plate |
| JPH0941173A (en) * | 1995-07-31 | 1997-02-10 | Nkk Corp | Production of hot rolled steel plate excellent in surface quality |
| CN101968320A (en) * | 2010-09-30 | 2011-02-09 | 南京钢铁股份有限公司 | Method for removing salamander from hearth roller of roller-hearth non-oxidation furnace |
| CN102636041A (en) * | 2012-03-27 | 2012-08-15 | 马钢(集团)控股有限公司 | Continuous heat treatment furnace with function of clearing metal accretions on furnace rollers and process method for clearing accretions on furnace rollers |
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| 李东晖: "中厚板辊底式热处理炉辊面结瘤分析与对策", 《轧钢》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878187A (en) * | 2015-05-27 | 2015-09-02 | 北京首钢股份有限公司 | Accretion removing method |
| CN108118131A (en) * | 2017-11-27 | 2018-06-05 | 山东钢铁股份有限公司 | A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross |
| CN109489430A (en) * | 2018-09-05 | 2019-03-19 | 宝钢特钢韶关有限公司 | A method of removal heating furnace water beam pad block dross |
| CN113267058A (en) * | 2021-05-20 | 2021-08-17 | 中天钢铁集团有限公司 | Method for removing nodules on heat-resistant sliding block of walking beam of heat storage type heating furnace |
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Application publication date: 20130206 |