CN204739923U - Clear away device of heat treatment furnace hearth roll dross on line - Google Patents
Clear away device of heat treatment furnace hearth roll dross on line Download PDFInfo
- Publication number
- CN204739923U CN204739923U CN201520462241.8U CN201520462241U CN204739923U CN 204739923 U CN204739923 U CN 204739923U CN 201520462241 U CN201520462241 U CN 201520462241U CN 204739923 U CN204739923 U CN 204739923U
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- China
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- steel plate
- heat treatment
- treatment furnace
- hearth roll
- dross
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Abstract
The utility model discloses a clear away device of heat treatment furnace hearth roll dross on line and method, the device includes puts the steel sheet on the stove roller, the steel sheet is 70mm3100mm9000mm's high strength steel board, along the steel sheet length direction for numerical control flame cutting equipment cut out the opening that the fish bone appeared. The utility model discloses under the state that does not need the blowing out, effectively utilize heat treatment furnace tempering and two normalizing state of temperatures, will handle the choose opportunities and at the in -process of drawing a temper and two kind normalizing technologies are changed, can effectively reduce because of handling the influence to production efficiency that the hearth roll dross leads to, the utility model discloses the production that can effectively solve gauge pressure trace under the heat treated steel board that leads to because of the hearth roll dross has improved the outward appearance qualification rate of heat treated steel board product by a wide margin, compared with a traditional method, the utility model has the advantages of it is easy and simple to handle, with low costs, it is little to the production efficiency influence, save a large amount of manpower and materials, effectively improved the steel sheet quality simultaneously.
Description
Technical field
The utility model relates to slab heat-treatment furnace and leads to stove technical field, especially a kind of device of online removing heat treatment furnace bottom roller dross.
Background technology
At present; domestic each large iron and steel enterprise heat-treats a kind of nitrogen protection non-oxidation roller hearth heat-treated furnace of main use to steel plate; this heat-treatment furnace has that production efficiency is high, consume energy the advantage such as low; flame produces heat in radiant tube internal-combustion; by heat radiation, steel plate in stove is heated; and due to continuously to inflated with nitrogen in stove, can ensure in heat treatment process, not produce secondary oxidation iron sheet except the steel plate of iron scale process through ball blast, effectively ensure that the surface quality of steel plate.
But find in actual production, heat treatment furnace bottom roller, through use after a while, understands the phenomenon of appearance dross in various degree.By analysis, mainly contain some reason following and can cause furnace hearth roller salamander: (1) furnace sealing does not sternly cause air to enter in stove, especially lift in process during fire door turnover steel plate before and after, enter air, cause forming oxidizing atmosphere, this is also the most serious basic reason of furnace hearth roller salamander within the scope of 5 meters, front and back fire door; (2) radiant tube breaks and causes combustion air or coal gas to enter in stove; (3) before steel plate hot process, following table ball blast is not thorough, causes iron scale to be brought in stove.
Growing along with the exploitation of domestic Ge great steel mill high-end sheet material, heat treatment furnace bottom roller dross has become the key factor that puzzlement think gauge heat-treated steel plate surface quality promotes.At present, the process for furnace hearth roller salamander adopts the mode of blowing out reconditioning usually, and process once needs more than 3 days, wastes time and energy, and has a strong impact on the production efficiency of heat-treatment furnace, needs badly and explores a kind of novel online solution.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is the device and method providing a kind of online removing heat treatment furnace bottom roller dross, by formulating reasonably time stove system, under not blowing out state, reducing under the prerequisite on production efficiency impact as far as possible, effective removing furnace hearth roller salamander, to improve the quality of thick steel plates lower surface.
For achieving the above object, the technical solution adopted in the utility model is: a kind of device of online removing heat treatment furnace bottom roller dross, comprise the steel plate be placed on furnace roller, described steel plate is the high-strength steel sheet of 70mm*3100mm*9000mm, cuts out the gap of fishbone along steel plate length direction NC Flame Cutting equipment.
Further, the gap of described steel plate has 3 row, and fishbone gap is specially symmetrically arranged rectangle gap, to increase the contact impact area of steel plate and dross.
Further, described stiffness steel plate adopts low-alloy steel to make.
A method for online removing heat treatment furnace bottom roller dross, comprises the following steps:
(1) make above-mentioned hearth roll and plow stove steel plate, for subsequent use;
(2) at the end of production tempered steel plate, steel plate in stove is emptied, by Control for Kiln Temperature between 550 DEG C-650 DEG C, time stove steel plate made in advance is placed into stokehold feeding roller table, uses centralising device by steel plate centering;
(3) by front and back oven door opening, at HMI operation and control interface setting Steel Plate Information, control the automatic shove charge of steel plate, manually setting roller table speed, making steel plate quickly through arriving fire door place after hearth roll; In the process passing through hearth roll, the steel plate of specially treated and hearth roll fast ram can make part dross come off;
(4) hearth roll is adjusted to manual mode, manually by steel plate with the fastest pullback speed to front fire door place, steel plate can make part dross come off by shock in running;
(5) repeat step (3) and step (4), time stove steel plate is moved reciprocatingly, until removed by the furnace hearth roller salamander of more than 80% between the fire door of front and back;
(6) stove steel plate will be plowed to come out of the stove, close fire door;
(7) in-furnace temperature is risen to normalizing temperature, temperature controls between 850 DEG C-910 DEG C, and time stove steel plate speed between the fire door of front and back is moved reciprocatingly;
(8) repeat step (3) to step (5) two to three times, make to stick in residual oxygen iron sheet dross on hearth roll thinning and be fitted on hearth roll, reduce the impact of remaining dross on following table quality as far as possible.
Further, the furnace temperature in described step (2) is 650 DEG C, and the reciprocating speed of service of step (5) light plate is 19m/min, and the furnace temperature in described step (7) is 910 DEG C, and time reciprocating speed of stove steel plate is 10m/min.
The beneficial effects of the utility model are:
1, the present invention plows furnace apparatus employing with the thick steel plates of fishbone, effectively increases the contact area at steel plate and furnace hearth roller salamander position, and the probability that dross can be made to come off in steel plate with wheel bottom roller knockout process increases greatly;
2, the present invention is under the state not needing blowing out, effectively utilize heat-treatment furnace tempering and normalizing two state of temperatures, by process choose opportunities in the process of tempering and the conversion of normalizing two kinds of techniques, effectively can reduce the impact on production efficiency because process furnace hearth roller salamander causes;
3, the present invention effectively can solve the generation of the heat-treated steel plate following table impression caused because of furnace hearth roller salamander, significantly improves the appearance yield of heat-treated steel panel products;
4, compared with conventional method, the present invention have easy and simple to handle, cost is low, affects little advantage to production efficiency, saves a large amount of manpower and materials, simultaneously effectively improves plate quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of utility model device.
In figure: 1-steel plate, 2-gap.
Detailed description of the invention
Below in conjunction with the drawings and the specific embodiments, utility model is further described.
As shown in the figure: a kind of device of online removing heat treatment furnace bottom roller dross, comprise the steel plate 1 be placed on furnace roller, described steel plate 1 is the high-strength steel sheet of 70mm*3100mm*9000mm, the gap 2 of fishbone is cut out along steel plate length direction NC Flame Cutting equipment, described gap 2 has 3 row, concrete shape is symmetrically arranged rectangle gap, to increase the contact impact area of steel plate 1 and dross.
A method for online removing heat treatment furnace bottom roller dross, comprises the following steps:
(1) make above-mentioned hearth roll and plow stove steel plate, for subsequent use;
(2) at the end of production tempered steel plate, steel plate in stove is emptied, by Control for Kiln Temperature between 550 DEG C-650 DEG C, time stove steel plate made in advance is placed into stokehold feeding roller table, uses centralising device by steel plate centering;
(3) by front and back oven door opening, at HMI operation and control interface setting Steel Plate Information, control the automatic shove charge of steel plate, manually roller table speed being set as 19m/min, making steel plate quickly through arriving fire door place after hearth roll; In the process passing through hearth roll, the steel plate of specially treated and hearth roll fast ram can make part dross come off;
(4) hearth roll is adjusted to manual mode, manually by steel plate with the fastest pullback speed to front fire door place, steel plate can make part dross come off by shock in running;
(5) repeat step (3) and step (4), time speed of stove steel plate with 19m/min between the fire door of front and back is moved reciprocatingly, until removed by the furnace hearth roller salamander of more than 80%;
(6) stove steel plate will be plowed to come out of the stove, close fire door;
(7) in-furnace temperature is risen to normalizing temperature, temperature controls between 850 DEG C-910 DEG C, and time speed of stove steel plate with 10m/min between the fire door of front and back is moved reciprocatingly;
(8) repeat step (3) to step (5) two to three times, make to stick in residual oxygen iron sheet dross on hearth roll thinning and be fitted on hearth roll, reduce the impact of remaining dross on following table quality as far as possible.
Whole operating process approximately needs an order of classes or grades at school, 8 hours, and time stove steel plate of making can Reusability.
The foregoing is only the preferred embodiment of utility model, is not the restriction to utility model.The change that those of ordinary skill in the art makes in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to the protection domain of utility model.
Claims (5)
1. the online device removing heat treatment furnace bottom roller dross, comprises the steel plate be placed on furnace roller, it is characterized in that: described steel plate cuts out the gap of fishbone along its length with NC Flame Cutting equipment.
2. the device of online removing heat treatment furnace bottom roller dross according to claim 1, is characterized in that: the gap of described steel plate has 3 row.
3. the device of online removing heat treatment furnace bottom roller dross according to claim 1 and 2, is characterized in that; Described fishbone gap is specially symmetrically arranged rectangle gap.
4. the device of online removing heat treatment furnace bottom roller dross according to claim 1 and 2, is characterized in that: described steel plate adopts the high-strength steel sheet of 70mm*3100mm*9000mm.
5. the device of online removing heat treatment furnace bottom roller dross according to claim 4, is characterized in that: described high-strength steel sheet adopts low-alloy steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520462241.8U CN204739923U (en) | 2015-07-01 | 2015-07-01 | Clear away device of heat treatment furnace hearth roll dross on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520462241.8U CN204739923U (en) | 2015-07-01 | 2015-07-01 | Clear away device of heat treatment furnace hearth roll dross on line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204739923U true CN204739923U (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520462241.8U Expired - Fee Related CN204739923U (en) | 2015-07-01 | 2015-07-01 | Clear away device of heat treatment furnace hearth roll dross on line |
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| Country | Link |
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| CN (1) | CN204739923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896963A (en) * | 2015-07-01 | 2015-09-09 | 山东钢铁股份有限公司 | Device and method for online removing accretions on furnace bottom roller of heat treatment furnace |
-
2015
- 2015-07-01 CN CN201520462241.8U patent/CN204739923U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896963A (en) * | 2015-07-01 | 2015-09-09 | 山东钢铁股份有限公司 | Device and method for online removing accretions on furnace bottom roller of heat treatment furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20170701 |