CN117144119A - Automatic positioning steel loading method for heating furnace - Google Patents
Automatic positioning steel loading method for heating furnace Download PDFInfo
- Publication number
- CN117144119A CN117144119A CN202311439318.5A CN202311439318A CN117144119A CN 117144119 A CN117144119 A CN 117144119A CN 202311439318 A CN202311439318 A CN 202311439318A CN 117144119 A CN117144119 A CN 117144119A
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- furnace
- billet
- roller way
- steel
- feeding roller
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 86
- 239000010959 steel Substances 0.000 title claims abstract description 86
- 238000010438 heat treatment Methods 0.000 title claims abstract description 52
- 238000011068 loading method Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
- C21D9/70—Furnaces for ingots, i.e. soaking pits
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- 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 application relates to an automatic positioning steel loading method of a heating furnace, which relates to the technical field of billet charging, and comprises the following steps: s1, acquiring parameters; s2, the first furnace roller way drives the billet to move to trigger a first grating signal; s3, judging whether the second furnace feeding roller way allows steel loading or not; s4, if the second furnace feeding roller way does not allow steel to be loaded, stopping the first furnace feeding roller way, and performing a step S3; s5, if the second furnace feeding roller way allows steel to be loaded, the billet movement triggers a second grating signal, and the counter is added with 1; s6, judging the alignment position of the billet; s7, if the north sides of the steel billet ends are aligned, after the second furnace feeding roller way runs for T1 time, the steel billet ends impact the collision plate, and the second furnace feeding roller way stops running, and step S9 is carried out; s8, if the south sides of the end parts of the billets are aligned, stopping the second furnace feeding roller way after the second furnace feeding roller way runs for T2 time, and performing a step S9; s9, moving the steel billet to the walking beam, and performing step S2. The application has the effect of uniformly distributing small billets in the heating furnace.
Description
Technical Field
The application relates to the technical field of billet charging, in particular to an automatic positioning and steel loading method for a heating furnace.
Background
In the production of deformed steel bars, steel billets used in a rolling line can enter the rolling line for rolling after being heated by a heating furnace, and the larger the steel billets are, the higher the rolling efficiency of the steel billets is, and the higher the yield of the deformed steel bars is, so that the newly-built deformed steel bar production line is provided with a larger step-by-step heating furnace, and the larger the steel billets of 16m or even longer can be usually accommodated.
The Chinese patent with the authorized bulletin number of CN104181852B in the related art provides an automatic steel loading control method of a heat accumulating type step heating furnace, wherein the heating furnace is provided with an external furnace feeding roller way and an internal furnace feeding rail, a first photoelectric switch is arranged at a position, which is 5m away from a furnace door, of the external furnace feeding roller way, a second photoelectric switch is arranged at a position, which is 1m away from the furnace door, of the external furnace feeding roller way, the internal furnace feeding roller way is 1m/s in high speed, the external furnace feeding roller way is 0.4m/s in low speed, and the internal furnace feeding roller way is 0.2m/s in low speed. The roller way outside the furnace runs at a speed of 1m/s, and conveys the billet to the heating furnace. When the head of the billet reaches the position of the first photoelectric switch, if the heating furnace does not send out a signal for allowing steel to be loaded, the roller way outside the furnace runs for 4S at the speed of 0.4m/S and stops, so that the billet stops between the first photoelectric switch and the second photoelectric switch for waiting for steel loading; if the heating furnace sends out a signal for allowing steel to be loaded and the furnace door is opened in place, the furnace roller way in the furnace runs at the speed of 1m/s, and the furnace roller way outside the furnace continues to run at the speed of 1 m/s. When the tail of the billet passes through the second photoelectric switch position, the furnace feeding roller way in the furnace runs for 4-6S at the speed of 0.2m/S, and then the material distribution is started, and the pusher pushes the billet up and rightly on the furnace feeding roller way in the furnace, so that the material distribution is completed.
In carrying out the present application, the inventors have found that at least the following problems exist in this technology: at present, some old production lines are usually small steel billets of 9m or 12m, and because the old production lines are dismantled, the small steel billets need to enter a large heating furnace for heating, but the small steel billets are aligned at one end in the large heating furnace, so that the small steel billets are concentrated and all concentrated on one side of a walking beam for heating, the walking beam is unevenly stressed, the end parts of the steel billets are easy to scratch a beam body, the steel billets are easy to adhere together in the stepping process and cannot be normally discharged, and because the heating furnace is in reciprocating combustion in the north and south, the small steel billets are concentrated on one side of the heating furnace, the heating furnace is in pure fuel gas combustion, no substances absorb heat, and energy waste is caused.
Disclosure of Invention
In order to uniformly distribute small billets in a heating furnace, the application provides an automatic positioning and steel loading method for the heating furnace.
The application provides an automatic positioning steel loading method for a heating furnace, which adopts the following technical scheme:
an automatic positioning and steel loading method for a heating furnace comprises the following steps:
s1, acquiring parameters;
s2, the first furnace roller way drives the billet to move at a first speed to trigger a first grating signal;
s3, triggering and judging whether the second furnace roller way allows steel loading or not by the first grating signal;
s4, if the second furnace feeding roller way does not allow steel to be loaded, stopping the first furnace feeding roller way, and performing a step S3;
s5, if the second furnace feeding roller way allows steel to be loaded, the first furnace feeding roller way drives the steel billet to move at a first speed to trigger a second grating signal, and the counter is increased by 1;
s6, triggering and judging the alignment position of the billet by a second grating signal;
s7, if the end part of the billet is aligned on the north side of the heating furnace, after the second furnace feeding roller way runs for T1 time, the end part of the billet impacts the striking plate, and the second furnace feeding roller way stops running, and the step S9 is carried out;
s8, if the end part of the billet is aligned on the south side of the heating furnace, after the second furnace feeding roller way runs for T2 time, the distance between the end part of the billet and the striking plate is D, and the second furnace feeding roller way stops running, and the step S9 is carried out;
s9, moving the steel billet to the walking beam, and performing step S2.
By adopting the technical scheme, the first furnace roller way drives the billet to move towards the heating furnace at the first speed, when the end part of the billet passes through the first photoelectric switch, the billet triggers the first grating signal, if the second furnace roller way is running at the moment, the first furnace roller way stops running, if the second furnace roller way stops running at the moment, the first furnace roller way continues to drive the billet to move towards the heating furnace at the first speed, when the end part of the billet passes through the second photoelectric switch, the billet triggers the second grating signal, firstly the counter is added by one, then the value of the counter is judged to be even or odd at the moment, if the counter is odd, the second furnace roller way runs for T1 time, the end part of the billet is impacted against the plate to be positioned at the north side, and the second furnace roller way stops running, if the counter is even, the end part of the billet is positioned at the south side after the second furnace roller way runs for T2 time, and the second furnace roller way stops running, the second furnace roller way continues to move to the walking beam, then the next billet is performed into the steel, the billet is alternately positioned at the north side, the positioning beam is performed in the heating furnace, the billet is uniformly distributed at the north side, the billet is heated, and the billet stress is reduced, and the billet is uniformly heated at one side of the billet is concentrated.
Preferably, the step S1 includes: s11, acquiring basic parameters: the distance between the first photoelectric switch and the furnace door is L1, the distance between the second photoelectric switch and the furnace door is L2, the distance between the collision plate and the furnace door is L3, and the first speed and the second speed are both V.
Preferably, the step S1 further includes: s12, calculating T1: t1= (l2+l3)/V.
Preferably, the step S11 further includes: the length of the billet is Q, and the friction coefficient between the billet and the second furnace roller way is mu.
Preferably, the step S1 further includes: s13, when the south side positioning of the steel billet is obtained through debugging, the shortest distance D1 and the farthest distance D2 between the end part of the steel billet and the collision plate are obtained.
Preferably, the step S1 further includes:
s14, calculating T2: t2= (t21+t22)/2;
s141, calculating T21: t21= (l2+l3-D1)/V-V/2 μg;
s142, calculating T22: t22= (l2+l3-D2)/V-V/2 μg.
Preferably, the step S3 includes:
s31, if the second furnace roller way is running, steel feeding is not allowed;
s32, if the second furnace feeding roller way stops running, steel feeding is allowed.
Preferably, the step S11 further includes: the counter initial value is 0.
Preferably, the step S6 includes:
s61, if the counter is odd, positioning the billet in the north;
and S62, if the counter is even, positioning the south side of the billet.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the steel billets are alternately positioned on the north and south sides on the second furnace feeding roller way, so that the two ends of the steel billets on the walking beam are aligned, and the condition of uneven stress of the walking beam is reduced;
2. the steel billets are uniformly distributed in the heating furnace, the condition that the small-sized steel billets are concentrated on one side of the walking beam for heating is reduced, the condition that pure fuel gas on one side of the heating furnace burns and no substances absorb heat is further reduced, and the energy waste is reduced.
Drawings
FIG. 1 is a flow chart of a method for automatically positioning and loading steel in a heating furnace according to an embodiment of the application.
Fig. 2 is a schematic diagram showing the distribution of billets on a walking beam in an embodiment of the present application.
Reference numerals illustrate: 11. the south side; 12. north; 2. a walking beam; 3. a furnace door; 4. a first furnace roller way; 5. a second furnace roller way; 6. a first photoelectric switch; 7. a second photoelectric switch; 8. a striking plate; 9. and (3) billet steel.
Detailed Description
The application is described in further detail below with reference to fig. 1-2.
The embodiment of the application discloses an automatic positioning steel loading method for a heating furnace. Referring to fig. 1 and 2, the following steps are included.
S1, acquiring parameters.
The step S1 comprises the following steps:
s11, acquiring basic parameters: the initial value of the counter is 0, the distance L1 between the first photoelectric switch and the furnace door is 9m, the distance L2 between the second photoelectric switch and the furnace door is 3.5 m, the distance L3 between the collision plate and the furnace door is 16.8 m, the first speed and the second speed V are both 1.5 m/s, the billet length Q is 12m, the friction coefficient mu between the billet and the second furnace roller way is 0.12, and the g is 9.8 m/s.
S12, calculating T1: t1= (l2+l3)/v=19.13 s.
S13, a plurality of experiments obtain that the range of the sliding value of the steel billet is 0.81-m to 0.91-m when the second furnace roller way stops running, and the shortest distance D1 from the end part of the steel billet to the striking plate is 3.5 m and the farthest distance D2 is 4.5-m according to the range of the sliding value of the steel billet.
S14, calculating T2: t2= (t21+t22)/2=10.3 s.
Step S14 includes:
s141, calculating T21: t21= (l2+l3-D1)/V-V/2 μg=10.59 s;
s142, calculating T22: t22= (l2+l3-D2)/V-V/2 μg= 9.997 s.
S2, the first furnace roller way drives the billet to move at a first speed to trigger a first grating signal.
S3, triggering and judging whether the second furnace roller way allows steel loading or not by the first grating signal.
The step S3 comprises the following steps:
s31, if the second furnace feeding roller way is running, not allowing steel to enter, and performing step S4;
s32, if the second furnace feeding roller way stops running, steel feeding is allowed, and step S5 is carried out.
S4, if the second furnace feeding roller way does not allow steel to be loaded, stopping the first furnace feeding roller way, and performing step S3.
S5, if the second furnace feeding roller way allows steel to be loaded, the first furnace feeding roller way drives the steel billet to move at a first speed to trigger a second grating signal, and the counter is increased by 1.
S6, triggering and judging the alignment position of the billet by the second grating signal.
The step S6 comprises the following steps:
s61, if the counter is odd, positioning the north side of the billet, and performing step S7;
if the counter is even, the south side of the billet is positioned, and the step S8 is performed.
And S7, if the end part of the billet is aligned on the north side of the heating furnace, after the second furnace feeding roller way runs for T1 time, the end part of the billet impacts the collision plate, and the second furnace feeding roller way stops running, so that the step S9 is performed.
S8, if the end of the steel billet is aligned on the south side of the heating furnace, after the second furnace feeding roller way runs for T2, the distance between the end of the steel billet and the striking plate is D, D is between D1 and D2, and the second furnace feeding roller way stops running, and the step S9 is carried out.
S9, moving the steel billet to the walking beam, and performing step S2.
The implementation principle of the automatic positioning and steel loading method of the heating furnace provided by the embodiment of the application is as follows: the first furnace roller way 4 drives the steel billet 9 to move towards the heating furnace at a first speed, and when the end part of the steel billet 9 passes through the first photoelectric switch 6, the steel billet 9 triggers a first grating signal. If the second furnace roller way 5 is running at the moment, the first furnace roller way 4 stops running; if the second furnace roller way 5 stops running at the moment, the first furnace roller way 4 continues to drive the billet 9 to move towards the heating furnace at the first speed. When the end of the billet 9 passes through the second photoelectric switch 7, the billet 9 triggers a second grating signal, firstly the counter is added by one, and then the value of the counter is judged to be even or odd. If the counter is odd, after the second furnace roller way 5 runs for T1 time, the end part of the billet 9 impacts the striking plate 8 to be positioned at the north 12, and the second furnace roller way 5 stops running; if the counter is even, after the second furnace roller way 5 runs for T2 time, the end part of the billet 9 is positioned at the south side 1, the second furnace roller way 5 stops running, and after the second furnace roller way 5 stops running. The billet 9 is moved onto the walking beam 2 and then the next billet 9 is fed. The steel billets 9 are alternately positioned on the north and south sides 12 in the heating furnace, so that the two ends of the steel billets 9 on the walking beam 2 are aligned, the condition that the stress of the walking beam 2 is uneven is reduced, the steel billets 9 are uniformly distributed in the heating furnace, and the condition that small steel billets 9 are concentrated on one side of the walking beam 2 for heating is reduced.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (9)
1. An automatic positioning and steel loading method for a heating furnace is characterized in that: the method comprises the following steps:
s1, acquiring parameters;
s2, the first furnace roller way drives the billet to move at a first speed to trigger a first grating signal;
s3, triggering and judging whether the second furnace roller way allows steel loading or not by the first grating signal;
s4, if the second furnace feeding roller way does not allow steel to be loaded, stopping the first furnace feeding roller way, and performing a step S3;
s5, if the second furnace feeding roller way allows steel to be loaded, the first furnace feeding roller way drives the steel billet to move at a first speed to trigger a second grating signal, and the counter is increased by 1;
s6, triggering and judging the alignment position of the billet by a second grating signal;
s7, if the end part of the billet is aligned on the north side of the heating furnace, after the second furnace feeding roller way runs for T1 time, the end part of the billet impacts the striking plate, and the second furnace feeding roller way stops running, and the step S9 is carried out;
s8, if the end part of the billet is aligned on the south side of the heating furnace, after the second furnace feeding roller way runs for T2 time, the distance between the end part of the billet and the striking plate is D, and the second furnace feeding roller way stops running, and the step S9 is carried out;
s9, moving the steel billet to the walking beam, and performing step S2.
2. The automatic positioning and steel loading method for a heating furnace according to claim 1, wherein: the step S1 includes: s11, acquiring basic parameters: the distance between the first photoelectric switch and the furnace door is L1, the distance between the second photoelectric switch and the furnace door is L2, the distance between the collision plate and the furnace door is L3, and the first speed and the second speed are both V.
3. The automatic positioning and steel loading method for the heating furnace according to claim 2, wherein the method comprises the following steps: the step S1 further includes: s12, calculating T1: t1= (l2+l3)/V.
4. The automatic positioning and steel loading method for the heating furnace according to claim 2, wherein the method comprises the following steps: the step S11 further includes: the length of the billet is Q, and the friction coefficient between the billet and the second furnace roller way is mu.
5. The automatic positioning and steel loading method for the heating furnace according to claim 4, wherein the method comprises the following steps: the step S1 further includes: s13, when the south side positioning of the steel billet is obtained through debugging, the shortest distance D1 and the farthest distance D2 between the end part of the steel billet and the collision plate are obtained.
6. The automatic positioning and steel loading method for the heating furnace according to claim 5, wherein the method comprises the following steps: the step S1 further includes:
s14, calculating T2: t2= (t21+t22)/2;
s141, calculating T21: t21= (l2+l3-D1)/V-V/2 μg;
s142, calculating T22: t22= (l2+l3-D2)/V-V/2 μg.
7. The automatic positioning and steel loading method for a heating furnace according to claim 1, wherein: the step S3 includes:
s31, if the second furnace roller way is running, steel feeding is not allowed;
s32, if the second furnace feeding roller way stops running, steel feeding is allowed.
8. The automatic positioning and steel loading method for a heating furnace according to claim 1, wherein: the step S11 further includes: the counter initial value is 0.
9. The automatic positioning and steel loading method for the heating furnace according to claim 8, wherein the method comprises the following steps: the step S6 includes:
s61, if the counter is odd, positioning the billet in the north;
and S62, if the counter is even, positioning the south side of the billet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311439318.5A CN117144119B (en) | 2023-11-01 | 2023-11-01 | Automatic positioning steel loading method for heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311439318.5A CN117144119B (en) | 2023-11-01 | 2023-11-01 | Automatic positioning steel loading method for heating furnace |
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| CN117144119A true CN117144119A (en) | 2023-12-01 |
| CN117144119B CN117144119B (en) | 2023-12-26 |
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2023
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| CN117144119B (en) | 2023-12-26 |
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