CN108118131A - A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross - Google Patents
A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross Download PDFInfo
- Publication number
- CN108118131A CN108118131A CN201711206638.0A CN201711206638A CN108118131A CN 108118131 A CN108118131 A CN 108118131A CN 201711206638 A CN201711206638 A CN 201711206638A CN 108118131 A CN108118131 A CN 108118131A
- Authority
- CN
- China
- Prior art keywords
- stove
- steel plate
- treatment furnace
- heat
- roller
- 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
Classifications
-
- 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
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
-
- 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
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0012—Rolls; Roll arrangements
-
- 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
- C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
-
- 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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The present invention provides a kind of method that high temperature quickly removes heat treatment furnace bottom roller dross, the present invention utilizes reasonably time stove system, heating and cooling are not required in process of production, pass through repeatedly friction movement and hearth roll and time stove steel plate between of time stove steel plate in stove, and furnace bottom roller surface is made to generate temperature drop, it is different using dross and the hearth roll coefficient of expansion, can make part dross come off can, quickly remove furnace hearth roller salamander.Effectively reduce the influence caused by handling dross to production efficiency and cost waste.Compared with conventional method, the present invention have processing time is short, it is easy to operate, be not required extras the features such as.Production efficiency is improved, reduces energy waste, notice effectively increases plate surface quality.
Description
Technical field
The present invention relates to Wide and Thick Slab heat-treatment furnace technical fields, and heat-treatment furnace is quickly removed more particularly to a kind of high temperature
The method of bottom roller dross.
Background technology
Normalizing, quenching and tempering heat treatment of the roller hearth heat-treated furnace for steel plate, steel pipe, shaped steel and wire rod.Roller-bottom type
Heat-treatment furnace thermal treatment quality is good, yield is high, mechanization and high degree of automation, and the application in heat treatment is increasing.
Domestic major steel mill occurs to cause lower surface of steel plate impression because of heat treatment furnace bottom roller dross in actual production
The problem of.It has been investigated that the reason for causing roller hearth heat-treated furnace furnace roller dross mainly have it is following：(1) steel plate following table
Face ball blast is not thorough, and the removal not yet in effect of the iron scale in the operation of rolling causes iron scale dross in stove.(2) after ball blast
Pellet and metal dust are attached to steel plate bottom surface, bring into stove, cause to aoxidize dross.(3) fire door firedoor frame leak, vapor
Into in stove, steel plate is caused to aoxidize dross.(4) heat treatment in-furnace temperature is excessively high, and time inside furnace is long under the steel plate condition of high temperature.
To eliminate influence of the furnace hearth roller salamander to lower surface of steel plate, current each steel mill is used mostly into the side of stove manual cleaning
Method.But the method processing time is long, and operation danger coefficient is big, and great amount of cost is caused to waste, and affects the production efficiency of steel mill
And cost control.Heat treatment furnace bottom roller dross problem has been to restrict the pass that domestic major steel mill plate yield and quality is promoted
One of key problem.
At present, the solution for mainly having following patent application to be related to non-oxidation heat processing furnace furnace hearth roller salamander in the prior art is arranged
It applies.CN104896963 B disclose a kind of method for removing heat treatment furnace bottom roller dross, and this method is to utilize normalizing and tempering
Two state of temperatures, the lower surface by special processing are the phase mutual friction of time stove steel plate and hearth roll of herringbone, hit,
Remove the dross on hearth roll.This method needs the burner with stand plate of special processing, of high cost, and when needing burner with stand 8 small or so, consumption
Duration influences production efficiency big.CN102914174A discloses a kind of processing method for preventing heat treatment furnace bottom roller dross,
Mainly under 800 DEG C of high temperature, front and rear oven door opening is moved using think gauge burner with stand plate in stove, repeatedly by furnace bottom for this method
Roller dross rolls flakiness and is fitted on furnace roller, and the method is continuously increased with iron scale, and dross can be caused more and more tighter
Weight, until failure.CN101968320A discloses a kind of method for removing heat treatment furnace bottom roller dross, and this method is at 500 DEG C
At a temperature of, dross is removed using the friction of burner with stand plate and hearth roll, but this method is complicated for operation, it is necessary to which the auxiliary such as hoist engine are set
Standby, cost is higher.
Therefore, there is an urgent need for explore a kind of method for fast and efficiently solving the problems, such as furnace hearth roller salamander.
The content of the invention
In view of the deficiencies of the prior art, it is an object of the invention to provide under a kind of high temperature working of a furnace, quick, inexpensive is clear
Except the method for heat treatment furnace bottom roller dross.Under the operating mode of not blowing out, the stove of additional equipment and special processing is not required
With steel plate, furnace hearth roller salamander is removed in a short time, improves the lower surface quality of steel plate.
To achieve these goals, the present invention provides following technical solution：
A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross, the high temperature quickly remove bottom of heat treatment furnace
The method of roller dross comprises the following steps：
1) branched time stove steel plate is rolled, branched described stove is positioned over the outlet port of heat-treatment furnace with steel plate and is entered
Mouth position is spare；
2) furnace temperature of the heat-treatment furnace under automatic control state is set as 910 DEG C -930 DEG C, treats that furnace temperature reaches this
After the temperature of setting, the exit of the heat-treatment furnace and the fire door of entrance are opened；
3) heat-treatment furnace is exported into roller-way and furnace rolls road is set as manual state of a control；Outlet roller-way is rotated manually
With furnace rolls road, a stove described in 1 is made to be rapidly entered with steel plate from the outlet port of heat-treatment furnace in stove；With most fast roller table speed
Stove described in entering in stove transports to the centre position of heat-treatment furnace with steel plate, then will described stove with most fast roller table speed
The outlet port of heat-treatment furnace is withdrawn into from the centre position of heat-treatment furnace with steel plate；
4) repetitive operation step 3) makes described stove be made back and forth in the centre position of heat-treatment furnace to outlet port of steel plate
Movement；Described stove is rolled in the process of running with steel plate, rub heat-treatment furnace furnace hearth roller salamander, can fall furnace bottom dross part
Fall；
5) after reciprocating motion in repetitive operation step 3) is multiple, by described time stove steel plate from the outlet position of heat-treatment furnace
It puts and transports；
6) using described stove of 9-11 branch steel plate difference repetitive operation step 3), 4) and 5)；
7) described time stove steel plate of 5-8 branch is prepared again, and from the entry position of heat-treatment furnace successively quick shove charge manually；So
The outlet roller-way of heat-treatment furnace and furnace rolls road are controlled into rotation manually afterwards, pass through rubbing between described time stove steel plate and roller-way
Power is wiped, the remaining dross of furnace bottom is made to come off；
8) all stoves in heat-treatment furnace are transported into heat-treatment furnace with steel plate, closes fire door, and will outlet roller-way and stove
Interior roller-way is switched to automatic control state.
In the method that high temperature as described above quickly removes heat treatment furnace bottom roller dross, it is preferable that in step 1), described time
Stove is 60mm × 3200mm × 12000mm common carbon steel boards with steel plate.
In the method that high temperature as described above quickly removes heat treatment furnace bottom roller dross, it is preferable that in step 2), by described in
The furnace temperature of heat-treatment furnace is set as 930 DEG C under automatic control state.
In the method that high temperature as described above quickly removes heat treatment furnace bottom roller dross, it is preferable that in step 5), described time
Steel billet temperature when stove is come out of the stove with steel plate is no more than 200 DEG C.
In the method that high temperature as described above quickly removes heat treatment furnace bottom roller dross, it is preferable that in manual state of a control
Under, the most fast roller table speed is 18-25m/min；Preferably, the most fast roller table speed is 20m/min.
In the method that high temperature as described above quickly removes heat treatment furnace bottom roller dross, it is preferable that in step 5), repeat to grasp
After making reciprocating motion 5-8 times in step 3), described stove is transported with steel plate from the outlet port of heat-treatment furnace；Preferably,
After reciprocating motion 5-6 times in repetitive operation step 3), described stove is transported with steel plate from the outlet port of heat-treatment furnace.
In the method that high temperature as described above quickly removes heat treatment furnace bottom roller dross, it is preferable that in step 6), using 10
4) and 5) Zhi Suoshu time stoves steel plate difference repetitive operation step 3),.
In the method that high temperature as described above quickly removes heat treatment furnace bottom roller dross, it is preferable that in step 7), prepare 5-
Time stove steel plate described in 8, and from the entry position of heat-treatment furnace successively quick shove charge manually, be specially：With most fast roller-way speed
Degree makes first Zhi Suoshu stoves with steel plate by being transported in stove and from outlet port outside stove, until the head of Zhi Suoshu times stove steel plates of head
It supports on the stop device of the outlet roller-way of heat-treatment furnace in portion；Stove steel plate successively quick shove charge will be plowed described in residue simultaneously,
And latter Zhi Suoshu stoves are supported to the afterbody of time stove steel plate described in upper one with the head of steel plate.
In the method that high temperature as described above quickly removes heat treatment furnace bottom roller dross, it is preferable that in step 7), prepare 7-
Time stove steel plate described in 8, and from the entry position of heat-treatment furnace successively quick shove charge manually.
In the method that high temperature as described above quickly removes heat treatment furnace bottom roller dross, it is preferable that in step 7), ensuring
First Zhi Suoshu time stoves are supported with the head of steel plate on the stop device of the outlet roller-way of heat-treatment furnace, and by prepared time of institute
Stove steel plate is behind the entry position of heat-treatment furnace successively manual quick shove charge, remains stationary state 10-15 minutes；Then by heat
The outlet roller-way and furnace rolls road for the treatment of furnace control rotation manually, by plowing the frictional force between stove steel plate and roller-way, make stove
All drosses in bottom come off.
Analysis understands that the method that a kind of high temperature disclosed by the invention quickly removes heat treatment furnace bottom roller dross is main real
Following technique effect is showed：
1st, the present invention is not required heating and cooling, is existed by time stove steel plate in process of production using reasonably time stove system
The friction between movement and hearth roll and time stove steel plate repeatedly in stove and furnace bottom roller surface is made to generate temperature drop, utilize knot
Knurl and the hearth roll coefficient of expansion are different, can make part dross come off can, quickly remove furnace hearth roller salamander.It effectively reduces because of processing
Influence and cost waste caused by dross to production efficiency.
2nd, compared with conventional method, the present invention have processing time is short, it is easy to operate, be not required extras the features such as.
Production efficiency is improved, reduces energy waste, notice effectively increases plate surface quality.
Specific embodiment
Below in conjunction with embodiment, the present invention will be described in detail.Each example the present invention explanation by way of provide and
The unrestricted present invention.In fact, those skilled in the art will be clear that, the situation of the scope or spirit of the invention is not being departed from
Under, it can modify in the present invention and modification.For example, the feature for being illustrated or described as the part of one embodiment can be used for
Another embodiment, to generate another embodiment.Thus, it may be desirable to the present invention comprising be included into appended claims and
Such modifications and variations in the range of its equivalent.
A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross, high temperature quickly remove heat treatment furnace bottom roller knot
The method of knurl comprises the following steps：
1) branched time stove steel plate is rolled, branched stove is positioned over the outlet port of heat-treatment furnace and entrance position with steel plate
It purchases use；
2) under hardening heat, the furnace temperature of heat-treatment furnace is set as under automatic control state 910 DEG C -930 DEG C (such as
915℃、920℃、925℃、928℃)；After furnace temperature reaches the temperature of the setting, exit and the import of heat-treatment furnace are opened
The fire door at place；
3) heat-treatment furnace is exported into roller-way and furnace rolls road is set as manual state of a control；Outlet roller-way and stove are rotated manually
Interior roller-way makes 1 stove be rapidly entered with steel plate from the outlet port of heat-treatment furnace in stove；It will be entered to most fast roller table speed
Stove in stove transports to the centre position of heat-treatment furnace with steel plate, then will plow stove steel plate from heat-treatment furnace with most fast roller table speed
Centre position be withdrawn into the outlet port of heat-treatment furnace；
4) repetitive operation step 3) makes a stove do reciprocal fortune in the centre position of heat-treatment furnace to outlet port with steel plate
It is dynamic；Time stove is rolled in the process of running with steel plate, rub heat-treatment furnace furnace hearth roller salamander, and furnace bottom dross part can be made to drop；
5) after reciprocating motion in repetitive operation step 3) is multiple, time stove steel plate is transported from the outlet port of heat-treatment furnace
Go out；
6) using 9-11 branch (such as 9,10,11) time stove steel plate difference repetitive operation step 3), 4) and 5)；It is logical
Steel plate time stove is subcooled, furnace bottom roller surface is made to generate temperature drop, it is different with the hearth roll coefficient of expansion using dross, can tie furnace bottom part
Knurl comes off；
7) 5-8 branch (such as 6,7,8) time stove steel plate is prepared again, and from the entry position of heat-treatment furnace successively hand
Move quick shove charge；Then the outlet roller-way of heat-treatment furnace and furnace rolls road are controlled into rotation manually, passes through time stove steel plate and roller
Frictional force between road makes the remaining dross of furnace bottom come off；
8) all stoves in heat-treatment furnace are transported into heat-treatment furnace with steel plate, closes fire door, and will outlet roller-way and stove
Interior roller-way is switched to automatic control state.
In a specific embodiment of the present invention, additional equipment and special is not required under the operating mode of not blowing out in the present invention
Time stove of processing is removed furnace hearth roller salamander, is improved the lower surface of steel plate in a short time with steel plate (using general steel plate)
Quality.Preferably, it is 60mm × 3200mm × 12000mm common carbon steel boards stove to be plowed in step 1) with steel plate.
It is room temperature to plow stove to enter stokehold with steel plate, is then sent into the stove of the room temperature in the heat-treatment furnace of high temperature with steel plate,
Fricting movement pulls out heat-treatment furnace, it is necessary to will plow stove steel plate when stove raises certain numerical value with steel billet temperature back and forth, no
Then the persistently overheating stove to high-temperature with steel plate is rubbed and removes the effect variation of roller bear building-up knurl back and forth, and the present invention is by more
Otherwise secondary experiment show that steel billet temperature when stove is come out of the stove with steel plate in step 5) must be strictly controlled will reach no more than 200 DEG C
Less than except knurl effect.
In the present invention, the furnace temperature of heat-treatment furnace is first set as to 910 DEG C -930 DEG C (such as 915 under automatic control state
DEG C, 920 DEG C, 925 DEG C, 928 DEG C), after furnace temperature reaches the temperature of the setting, open exit and the entrance of heat-treatment furnace
Fire door；Then stove is transported into steel plate in stove again.Design temperature of the present invention is 910 DEG C -930 DEG C, at this temperature, on the one hand
It is that furnace hearth roller salamander is in hot environment, stove is maintained at less than 200 DEG C with steel plate, and steel billet temperature is relatively low, and furnace hearth roller salamander holds
Easily flattened by the low steel plate of temperature；On the other hand it is that furnace hearth roller salamander is in high temperature, time stove steel billet temperature is low, furnace hearth roller salamander
Temperature reduces after contact time stove steel plate, and generation expands with heat and contract with cold, easily comes off from hearth roll.It is further preferred that step 2)
The middle furnace temperature by heat-treatment furnace is set as 930 DEG C under automatic control state.
Under manual state of a control, most fast roller table speed is 18-25m/min (such as 19m/min, 20m/min, 21m/
min、22m/min、23m/min、24m/min)；Preferably, most fast roller table speed is 20m/min, under this speed, time stove steel plate
It most could quickly reach among come out of the stove end or heat-treatment furnace, and relatively low temperature can be kept.
In step 5), after reciprocating motion 5-8 times (such as 6 times, 7 times, 8 times) in repetitive operation step 3), stove is used
Steel plate is transported from the outlet port of heat-treatment furnace；It preferably, will stove after the reciprocating motion in repetitive operation step 3) 5-6 times
It is transported with steel plate from the outlet port of heat-treatment furnace.
In a specific embodiment of the present invention, it is preferable that distinguish repetitive operation using 10 times stove steel plates in step 6)
4) and 5) step 3),.This is because this quantity is the result of the test repeatedly drawn according to live practical operation, this 10 times stove is used
After steel plate is by above operation, it is ensured that thickness is up to state standards requirement for lower surface quality after 60mm and following steel plate quenching.
In step 7), prepare 5-8 branch time stove steel plates, and from the entry position of heat-treatment furnace successively quick shove charge manually,
Specially：Make first branch time stove with steel plate by being transported in stove and from outlet port outside stove with most fast roller table speed, until first branch time
Stove is supported with the head of steel plate on the stop device of the outlet roller-way of heat-treatment furnace；It is simultaneously that residue time stove is fast successively with steel plate
Quick-mounting stove, and latter branch time stove is supported into upper one afterbody for plowing stove steel plate with the head of steel plate.
In the present invention, 5-8 branch time stove steel plates are prepared in step 7), and it is manual successively from the entry position of heat-treatment furnace
Then the outlet roller-way of heat-treatment furnace and furnace rolls road are controlled rotation by quick shove charge manually, pass through time stove steel plate and roller-way
Between frictional force, all drosses in furnace bottom is made to come off.This is because this quantity (5-8 branch) is more according to live practical operation
The secondary result of the test drawn, after the completion of 5-8 branch steel plate time stove herein, it is ensured that following table after thickness 80-120mm steel plate quenchings
Face quality is up to state standards requirement.Further preferably, 7-8 branch time stove steel plates are prepared in step 7), and from heat-treatment furnace
Entry position quick shove charge manually successively.
In step 7), first branch time stove is being ensured with the head of steel plate and is supporting the stop device in the outlet roller-way of heat-treatment furnace
On, and by prepared time stove steel plate from the entry position of heat-treatment furnace successively manually after quick shove charge, remains stationary shape
State 10-15min (such as 11min, 12min, 13min, 14min)；Then by the outlet roller-way of heat-treatment furnace and furnace rolls road hand
Dynamic control rotates, and by plowing the frictional force between stove steel plate and roller-way, all drosses in furnace bottom is made to come off.
By cold steel plate time stove in the present invention, furnace bottom roller surface is made to generate temperature drop, utilizes dross and the hearth roll coefficient of expansion
Difference can make furnace bottom part dross come off.This is because the dross on hearth roll and hearth roll is in high temperature, time stove steel plate is kept
Less than 200 DEG C of lower temperature；After dross on hearth roll and hearth roll is contacted with cold steel plate, temperature drop can be generated；Due to furnace bottom
The material of roller is different with the material of dross, therefore the coefficient of expansion to expand with heat and contract with cold is different, dross can be made to be easier to from hearth roll
It comes off.
A kind of high temperature provided by the invention, the quick method for removing heat treatment furnace bottom roller dross.The present invention is in quenching temperature
Degree is lower need not to cool down or blowing out, can quickly, effectively reduce the lower surface of steel plate impression caused by furnace hearth roller salamander, hence it is evident that raising
Plate surface quality.The present invention at high temperature contacts cold steel plate and hearth roll, makes the reduction of furnace bottom roll temperature, using hearth roll and
Dross material difference promotes dross to come off.Compared with conventional method, possessing need not cool down, processing time is short, to the production time
It influences small；The steel plate of special processing is not required, it is at low cost, and the features such as small, is damaged to hearth roll.Save a large amount of power consumptions, coal consumption
Cost, it is easy to operate, while energy consumption effectively improves lower surface of steel plate quality.
Embodiment 1
A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross, high temperature quickly remove heat treatment furnace bottom roller knot
The method of knurl comprises the following steps：
1) branched stove is rolled with steel plate (time stove with steel plate be 60mm × 3200mm × 12000mm common carbon steel boards), will be more
Branch time stove with steel plate be positioned over heat-treatment furnace outlet port and entry position it is spare；
2) under hardening heat, the furnace temperature of heat-treatment furnace under automatic control state is set as 930 DEG C, treats that furnace temperature reaches
After the temperature of the setting, the exit of heat-treatment furnace and the fire door of entrance are opened；
3) heat-treatment furnace is exported into roller-way and furnace rolls road is set as manual state of a control；Outlet roller-way and stove are rotated manually
Interior roller-way makes 1 stove be rapidly entered with steel plate from the outlet port of heat-treatment furnace in stove；With most fast roller table speed 20m/min
The stove entered in stove with steel plate is transported to the centre position of heat-treatment furnace, then stove will be plowed with most fast roller table speed 20m/min
The outlet port of heat-treatment furnace is withdrawn into from the centre position of heat-treatment furnace with steel plate；
4) repetitive operation step 3) makes a stove do reciprocal fortune in the centre position of heat-treatment furnace to outlet port with steel plate
It is dynamic；Time stove is rolled in the process of running with steel plate, rub heat-treatment furnace furnace hearth roller salamander, and furnace bottom dross part can be made to drop；
5) after the reciprocating motion in repetitive operation step 3) 6 times, time stove steel plate is transported from the outlet port of heat-treatment furnace
Go out, steel billet temperature when stove is come out of the stove with steel plate is no more than 200 DEG C；
6) using 10 time stoves steel plate difference repetitive operation step 3), 4) and 5)；By cold steel plate time stove, make hearth roll
Surface generates temperature drop, different with the hearth roll coefficient of expansion using dross, and furnace bottom part dross can be made to come off；
7) 7 time stove steel plates are prepared again, and from the entry position of heat-treatment furnace successively quick shove charge manually；Specially：
Make first branch time stove with steel plate by being transported in stove and from outlet port outside stove with most fast roller table speed, until first branch time stove steel plate
Head support heat-treatment furnace outlet roller-way stop device on；Residue is plowed into stove steel plate successively quick shove charge simultaneously,
And latter branch time stove is supported to the afterbody of upper one time stove steel plate with the head of steel plate；
It is supported ensuring first branch time stove with the head of steel plate on the stop device of the outlet roller-way of heat-treatment furnace, and by institute
Prepared time stove steel plate is behind the entry position of heat-treatment furnace successively manual quick shove charge, 10-15 points of remains stationary state
Clock；Then the outlet roller-way of heat-treatment furnace and furnace rolls road are controlled into rotation manually, by plowing between stove steel plate and roller-way
Frictional force makes all drosses in furnace bottom come off.
8) all stoves in heat-treatment furnace are transported into heat-treatment furnace with steel plate, closes fire door, and will outlet roller-way and stove
Interior roller-way is switched to automatic control state.
The method whole process that the high temperature of the present invention quickly removes heat treatment furnace bottom roller dross needs 2 hours.And show
Have in processing method, if carrying out blowing out processing, entirely except knurl process needs 3 days or more.If by existing time of part steel mill
It is more than hour to need 10 for stove method, whole process.A stove is carried out in the present inventive method, it is ensured that thickness is up to 80-
Lower surface quality is up to state standards requirement after 120mm steel plate quenchings.The present invention is due to greatly shortening time stove time, every time
It reduces power consumption, gas consumption, nitrogen and consumes about 15000 yuan；And every time time stove time reduce 8 it is small when more than, greatly improve
The production efficiency of steel mill, reduces downtime.
Except knurl, used stove may be reused the present invention with steel plate after ball blast in the process, so as to save money
Source, while of the present invention stove is general steel plate with steel plate, need not prepare the steel plate of special requirement shape,
Production cost greatly reduces.Using reasonably time stove system heating and cooling are not required, by plowing in the present invention in process of production
Repeatedly friction movement and hearth roll and time stove steel plate between of the stove steel plate in stove and furnace bottom roller surface is made to generate temperature
Drop, it is different using dross and the hearth roll coefficient of expansion, can make part dross come off can, quickly remove furnace hearth roller salamander.Effectively drop
Low influence and cost waste caused by handling dross to production efficiency.Compared with conventional method, the present invention has processing
Time is short, easy to operate, be not required extras the features such as.Production efficiency is improved, reduces energy waste, notice effectively carries
High plate surface quality.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method that high temperature quickly removes heat treatment furnace bottom roller dross, feature are, the high temperature quickly removes heat
The method for the treatment of furnace furnace hearth roller salamander comprises the following steps：
1) branched time stove steel plate is rolled, branched described stove is positioned over the outlet port of heat-treatment furnace and entrance position with steel plate
It purchases use；
2) furnace temperature of the heat-treatment furnace under automatic control state is set as 910 DEG C -930 DEG C, treats that furnace temperature reaches the setting
Temperature after, open the exit of the heat-treatment furnace and the fire door of entrance；
3) heat-treatment furnace is exported into roller-way and furnace rolls road is set as manual state of a control；Outlet roller-way and stove are rotated manually
Interior roller-way makes a stove described in 1 be rapidly entered with steel plate from the outlet port of heat-treatment furnace in stove；It will be into most fast roller table speed
Enter described in stove the centre position that stove transports to heat-treatment furnace with steel plate, then with most fast roller table speed by described time stove steel
Plate is withdrawn into the outlet port of heat-treatment furnace from the centre position of heat-treatment furnace；
4) repetitive operation step 3) makes described stove do reciprocal fortune in the centre position of heat-treatment furnace to outlet port with steel plate
It is dynamic；Described stove is rolled in the process of running with steel plate, rub heat-treatment furnace furnace hearth roller salamander, can fall furnace bottom dross part
Fall；
5) after reciprocating motion in repetitive operation step 3) is multiple, described time stove steel plate is transported from the outlet port of heat-treatment furnace
Go out；
6) using described stove of 9-11 branch steel plate difference repetitive operation step 3), 4) and 5)；
7) described time stove steel plate of 5-8 branch is prepared again, and from the entry position of heat-treatment furnace successively quick shove charge manually；Then will
The outlet roller-way and furnace rolls road of heat-treatment furnace control rotation manually, pass through the friction between described time stove steel plate and roller-way
Power makes the remaining dross of furnace bottom come off；
8) all stoves in heat-treatment furnace are transported into heat-treatment furnace with steel plate, closes fire door, and will outlet roller-way and furnace rolls
Road is switched to automatic control state.
2. the method that high temperature as described in claim 1 quickly removes heat treatment furnace bottom roller dross, feature are, step
1) in, described stove is 60mm × 3200mm × 12000mm common carbon steel boards with steel plate.
3. the method that high temperature as described in claim 1 quickly removes heat treatment furnace bottom roller dross, feature are, step
2) in, the furnace temperature of the heat-treatment furnace is set as 930 DEG C under automatic control state.
4. the method that high temperature as described in claim 1 quickly removes heat treatment furnace bottom roller dross, feature are, step
5) in, steel billet temperature when described time stove is come out of the stove with steel plate is no more than 200 DEG C.
5. the method that the high temperature as described in any in claim 2-4 quickly removes heat treatment furnace bottom roller dross, feature exist
In under manual state of a control, the most fast roller table speed is 18-25m/min；Preferably, the most fast roller table speed is
20m/min。
6. the method that high temperature as described in claim 1 or 4 quickly removes heat treatment furnace bottom roller dross, feature are, step
It is rapid 5) in, after reciprocating motion in repetitive operation step 3) 5-8 times, by described time stove steel plate from the outlet port of heat-treatment furnace
It transports；Preferably, after the reciprocating motion in repetitive operation step 3) 5-6 times, by described time stove steel plate going out from heat-treatment furnace
Mouth position transports.
7. the method that high temperature as described in claim 1 quickly removes heat treatment furnace bottom roller dross, feature are, step 6)
In, using the steel plate difference repetitive operation step 3) of time stoves described in 10,4) and 5).
8. the method that high temperature as described in claim 1 quickly removes heat treatment furnace bottom roller dross, feature are, step 7)
In, prepare described time stove steel plate of 5-8 branch, and from the entry position of heat-treatment furnace successively quick shove charge manually, be specially：With most
Fast roller table speed makes first Zhi Suoshu stoves with steel plate by being transported in stove and from outlet port outside stove, until Zhi Suoshu stoves of head are used
It supports on the stop device of the outlet roller-way of heat-treatment furnace on the head of steel plate；It is simultaneously that described in residue stove is fast successively with steel plate
Quick-mounting stove, and latter Zhi Suoshu stoves are supported to the afterbody that stove steel plate is plowed described in upper one with the head of steel plate.
9. the method that high temperature as claimed in claim 8 quickly removes heat treatment furnace bottom roller dross, feature are, step 7)
In, prepare described time stove steel plate of 7-8 branch, and from the entry position of heat-treatment furnace successively quick shove charge manually.
10. the method that high temperature as claimed in claim 8 quickly removes heat treatment furnace bottom roller dross, feature are, step
7) in, supported ensuring first Zhi Suoshu stoves with the head of steel plate on the stop device of the outlet roller-way of heat-treatment furnace, and will
Prepared time stove steel plate from the entry position of heat-treatment furnace successively manually after quick shove charge, remains stationary state 10-15
Minute；Then the outlet roller-way of heat-treatment furnace and furnace rolls road are controlled into rotation manually, by plowing between stove steel plate and roller-way
Frictional force, all drosses in furnace bottom is made to come off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711206638.0A CN108118131B (en) | 2017-11-27 | 2017-11-27 | A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711206638.0A CN108118131B (en) | 2017-11-27 | 2017-11-27 | A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108118131A true CN108118131A (en) | 2018-06-05 |
| CN108118131B CN108118131B (en) | 2019-05-14 |
Family
ID=62227988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711206638.0A Active CN108118131B (en) | 2017-11-27 | 2017-11-27 | A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108118131B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728585A (en) * | 2012-06-29 | 2012-10-17 | 秦皇岛首秦金属材料有限公司 | Furnace cleaning method for controlling furnace bottom roller indentation of thermal treatment furnace |
| CN102914174A (en) * | 2012-10-16 | 2013-02-06 | 南京钢铁股份有限公司 | Furnace dredging method for avoiding accretion on furnace bottom roller of non-oxidation heat treatment furnace |
| CN103710518A (en) * | 2013-12-27 | 2014-04-09 | 新余钢铁集团有限公司 | Method for eliminating roller marks of steel plates by controlling nodulation of furnace rollers |
| 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 |
-
2017
- 2017-11-27 CN CN201711206638.0A patent/CN108118131B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728585A (en) * | 2012-06-29 | 2012-10-17 | 秦皇岛首秦金属材料有限公司 | Furnace cleaning method for controlling furnace bottom roller indentation of thermal treatment furnace |
| CN102914174A (en) * | 2012-10-16 | 2013-02-06 | 南京钢铁股份有限公司 | Furnace dredging method for avoiding accretion on furnace bottom roller of non-oxidation heat treatment furnace |
| CN103710518A (en) * | 2013-12-27 | 2014-04-09 | 新余钢铁集团有限公司 | Method for eliminating roller marks of steel plates by controlling nodulation of furnace rollers |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108118131B (en) | 2019-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207498416U (en) | A kind of aluminium profile quenching device | |
| CN108118131B (en) | A kind of method that high temperature quickly removes heat treatment furnace bottom roller dross | |
| CN103436679A (en) | Differential temperature heat treatment method of minor-diameter high chromium cast-iron roll | |
| CN102776347A (en) | On-line roll grinding method for carbon jacket hearth roll | |
| CN105170665B (en) | Method for removing iron oxide scale from surface of strip steel efficiently | |
| CN109055713A (en) | A kind of double-regenerative heating furnace board briquette and method for controlling furnace temperature | |
| CN101979190A (en) | Multifunctional furnace for continuously degreasing, sintering, quenching and tempering powder metallurgical products | |
| CN105403061A (en) | Energy saving kiln with cooling waste heat cyclically used for improving combustion supporting air temperature | |
| CN104896963A (en) | Device and method for online removing accretions on furnace bottom roller of heat treatment furnace | |
| CN104263885A (en) | Heat treatment process for improving low-temperature toughness of castings | |
| CN103710518B (en) | A kind of method eliminating steel plate roll marks by controlling furnace roller dross | |
| CN106867549A (en) | A kind of coke dry quenching boiler do not stop production realize maintenance method | |
| CN101168827A (en) | Method for heating light metal blank | |
| CN202401110U (en) | Multifunctional continuous thermal treatment furnace | |
| CN102876875A (en) | Method for performing full annealing heat treatment for alloy steel pipe | |
| CN202193804U (en) | Heat-treatment tempering chamber | |
| CN103512375B (en) | Middle low temperature oven recycles the device and method of high temperature furnace fume afterheat | |
| CN101086056B (en) | Quick annealing method for titanium seamless pipe | |
| CN107974653B (en) | A kind of underproof optimization method of titanium-niobium alloy part annealing heat-treatment | |
| CN101435018B (en) | Hot dip galvanizing annealing process and high temperature annealing furnace | |
| CN104357607A (en) | Blast furnace roasting method | |
| CN103836899A (en) | Process for utilizing waste heat of clustering intermittent-type refractory brick drying kiln | |
| CN103205519A (en) | Technology for extracting iron from steel-making and ironmaking fly ash by micro-wave heating | |
| CN102329939B (en) | On-line thermal treatment method for hollow core rod | |
| JPH055124A (en) | Low dew point atmospheric heat treatment furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Jungang Inventor after: Ren Xujun Inventor after: Gao Haijun Inventor after: Li Tao Inventor after: Yu Quancheng Inventor after: Zhang Changhong Inventor after: Zhou Ping Inventor after: Li Chang Inventor after: Wei Junguang Inventor after: Feng Wenyi Inventor after: Xing Changhuai Inventor after: Ma Heng Inventor after: Li Chuanpeng Inventor after: Li Qiang Inventor before: Liu Jungang Inventor before: Ren Xujun Inventor before: Gao Haijun Inventor before: Zhou Ping Inventor before: Li Chang Inventor before: Wei Junguang Inventor before: Feng Wenyi Inventor before: Xing Changhuai Inventor before: Ma Heng Inventor before: Li Chuanpeng Inventor before: Li Qiang |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210623 Address after: 271104 Shuangquan Road, Gangcheng District, Jinan City, Shandong Province Patentee after: LAIGANG GROUP YINSHAN SHAPED STEEL Co.,Ltd. Address before: 250101 No. 21 industrial North Road, Licheng District, Shandong, Ji'nan Patentee before: SHANDONG IRON AND STEEL Co.,Ltd. |
|
| TR01 | Transfer of patent right |