CN109332626B - Continuous casting billet hot-feeding direct-rolling automatic blank discharging equipment and method - Google Patents
Continuous casting billet hot-feeding direct-rolling automatic blank discharging equipment and method Download PDFInfo
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- CN109332626B CN109332626B CN201811313933.0A CN201811313933A CN109332626B CN 109332626 B CN109332626 B CN 109332626B CN 201811313933 A CN201811313933 A CN 201811313933A CN 109332626 B CN109332626 B CN 109332626B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
Abstract
The invention belongs to the technical field of metallurgy, and provides automatic continuous casting billet hot-conveying and direct-rolling discharging equipment and a method, which comprises a cutting machine, a conveying roller way, a discharging roller way, a hot-conveying roller way, a billet moving vehicle and a control system comprising a thermodetector and a hot-conveying heat detection switch, wherein the cutting machine, the conveying roller way, the discharging roller way and the hot-conveying roller way are sequentially arranged along the moving direction of a hot billet, after the hot billet is cut, the thermodetector transmits the detected hot billet information to the control system, and the control system compares the temperature measurement value of the hot billet with a set value to judge whether the hot billet: when the measured value is lower than the set value and is unqualified hot billets, starting a billet moving handle to move the unqualified hot billets out of the production line; when the measured value is not lower than the set value, the qualified hot billet is conveyed to a hot conveying roller way and is conveyed to a direct rolling procedure for use. The invention starts to put into automation from the beginning of hot billet casting, does not need manual intervention in the whole process, lightens the labor intensity of workers, ensures continuous and stable production, and reduces the production pause caused by improper manual intervention or the economic loss caused by equipment damage.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to automatic continuous casting billet hot-delivery direct-rolling billet discharging equipment and method.
Background
In the metallurgy steelmaking continuous casting operation, in order to reduce energy consumption and production cost, a production process flow that a hot billet with qualified temperature is directly sent to a rolling mill for direct rolling through a series of roller ways without cooling is adopted, and hot-sending direct rolling is called as hot-sending direct rolling for short. The hot billet production line is also referred to as a stream, as one production line is an "upstream".
In the continuous casting production with hot conveying and direct rolling, most of the knockout systems are only suitable for the working conditions that the casting flow production is the hot billet with qualified temperature, but when the casting flow is just cast or the production process is occasionally unstable, and the casting flow has unqualified hot billet, the unqualified hot billet must be offline by devices such as a billet moving vehicle, and the like. The unqualified hot billets occur randomly and are not known to occur continuously, the number of the produced unqualified hot billets is also a random number, and the time for processing the unqualified hot billets is much longer than the cycle time for sending the qualified hot billets, so when the automatic switching is to be performed by manually offline hot billets and when the manual switching is back to automatic, for operating staff, the spirit must be highly concentrated, the working strength is high, even if the experienced staff carelessly take a little, the billet discharging disorder, the casting blank blockage and even the normal billet discharging cannot be realized, and the casting stop accident is caused.
In addition, when multiple production lines are arranged side by side at the same time, after the continuous casting blank of each flow reaches the length required by production, the continuous casting blank is cut into hot blanks with fixed length by a cutting device, a plurality of hot blanks are possibly generated on a conveying roller way within the same period time, in extreme cases, one hot blank exists on each flow of conveying roller way, however, only one qualified hot blank can be conveyed to a hot conveying roller way area from the conveying roller way through a blank discharging roller way within each sending period, and therefore blank discharging control is needed.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides continuous casting billet hot-conveying direct-rolling automatic blank discharging equipment which comprises a cutting machine, a conveying roller way, a blank discharging roller way and a hot blank conveying roller way which are sequentially arranged along the moving direction of a hot blank, wherein a blank moving vehicle is arranged on one side of the blank discharging roller way; the cutting machine cuts hot blanks, the control system starts the conveying roller way to convey the hot blanks after receiving a cutting completion signal, when the front ends of the hot blanks are conveyed to the positions of the thermometers, the thermometers transmit information of the hot blanks and measured hot blank temperature values to the control system, the control system times the hot blanks and controls the conveying roller way to stop allowing the hot blanks to wait at the positions of the thermometers, and the control system compares the temperature measurement values of the hot blanks with set values to judge whether the hot blanks are qualified or not: when the measured value is lower than the set value or the waiting time of the hot billet exceeds the period, the hot billet is unqualified, the control system starts the conveying roller way and the ejection roller way to completely convey the unqualified hot billet to the ejection roller way and then stops, the control system starts the blank moving handle to move the unqualified hot billet out of the production line, and then the blank moving vehicle returns to one side of the original ejection roller way to wait; and when the measured value is not lower than the set value, the qualified hot blank is conveyed to the ejection roller way completely by the control system starting the conveying roller way and the ejection roller way, the conveying roller way stops, the control system starts the hot conveying roller way, the qualified hot blank is conveyed to the hot conveying roller way from the ejection roller way, and the qualified hot blank is conveyed to the direct rolling process for use by the hot conveying roller way.
Preferably, the hot billet conveying device further comprises a first lifting baffle, the first lifting baffle is installed between the conveying roller way and the billet discharging roller way, the first lifting baffle is connected with the control system, when the unqualified hot billets are moved out of the production line by the billet moving handle, the first lifting baffle is lifted, and the first lifting baffle is lowered after the unqualified hot billets are moved out of the production line.
Preferably, the hot billet conveying device further comprises a second lifting baffle, the second lifting baffle is installed between the billet discharging roller way and the hot conveying roller way, the second lifting baffle is connected with the control system, when the unqualified hot billets are moved out of the production line by the billet moving handle, the second lifting baffle is lifted, and the second lifting baffle is lowered after the unqualified hot billets are moved out of the production line.
Preferably, the thermodetector is arranged vertically above the position of the last group of rollers of the conveying roller way and used for detecting the hot blank downwards.
Furthermore, the control system also comprises a hot-feeding thermal detection switch, the hot-feeding thermal detection switch is installed on one side along the hot-feeding roller way, the distance between the hot-feeding thermal detection switch and the second lifting baffle is greater than the length of the hot blank, and the hot blank is detected in the horizontal direction.
Preferably, the control system further comprises a conveying thermal detection switch, the conveying thermal detection switch is arranged vertically above the middle part of the conveying roller way, and the hot blank is detected downwards; the position of the conveying heat detection switch is used for dividing the conveying roller way into a front half part and a rear half part, and the front half part and the rear half part run at different speeds as required under the control of the control system.
Preferably, the cutting machine and the conveying roller way are provided with a plurality of hot blank cutting conveying lines which are arranged in parallel before the knockout roller way, each hot blank cutting conveying line is provided with one cutting machine and one conveying roller way, the number of the thermometers corresponds to that of the conveying roller way, one thermometer is arranged at the position of the last group of rollers of each conveying roller way, the control system times the hot blanks detected by the thermometers, and the control system sequentially conveys the qualified hot blanks on each hot blank cutting conveying line to the hot conveying roller way according to time sequence.
Further, when only one hot blank cutting conveying line has unqualified hot blanks with the temperature measurement value lower than the set value, the control system does not immediately process the unqualified hot blanks and still conveys the qualified hot blanks by other hot blank cutting conveying lines; when the control system judges that the knockout roller bed has no hot billets and the cutting conveying line has unqualified hot billets with the waiting time length exceeding the time period, all the conveying roller beds and the knockout roller beds with the unqualified hot billets are started, all the unqualified hot billets are conveyed to the knockout roller beds, then the billet moving vehicle is started, and all the unqualified hot billets are moved out of the production line.
The invention also provides a continuous casting billet hot delivery direct rolling automatic knockout method, which uses the continuous casting billet hot delivery direct rolling automatic knockout equipment to treat hot billets and comprises the following steps:
s101: cutting the hot blank by a cutting machine according to requirements, and conveying the hot blank to the front end of the hot blank by a conveying roller way to reach a temperature measuring instrument after the cutting is finished;
s102: the temperature measuring instrument detects the temperature of the hot blank and transmits the detected information of the hot blank and the temperature measured value of the hot blank to the control system;
s103: the control system compares the temperature measured value of the hot blank with a set value, and judges whether the hot blank is qualified: when the measured value is lower than the set value, the hot blank is unqualified and is processed according to the step S104; when the measured value is not lower than the set value, the blank is qualified and processed according to the step S105;
s104: the control system starts the conveying roller way and the knockout roller way to completely convey the hot billets onto the knockout roller way and then stops, the control system starts the billet moving handle to move the unqualified hot billets out of the production line, and then the billet moving vehicle returns to one side of the knockout roller way where the billet moving vehicle is originally located to wait;
s105: and the control system starts the conveying roller way and the knockout roller way to convey the qualified hot billets to the hot conveying roller way, and the qualified hot billets are conveyed to the direct rolling process for use by the hot conveying roller way.
Preferably, when a plurality of hot billet cutting conveyor lines are arranged in parallel before the knockout roller way, in step S103, the control system further records the time when the front end of each hot billet on each hot billet cutting conveyor line reaches the detection area of the temperature measuring instrument, and in step S105, the qualified hot billets are sequentially moved to the hot delivery roller way according to the sequence of the time when all the qualified hot billets enter the detection area.
The invention has the beneficial effects that: the method is automatic from the beginning of hot billet casting, does not need manual intervention in the whole process, lightens the labor intensity of workers, ensures continuous and stable production, and reduces the production pause caused by improper manual intervention or the economic loss caused by equipment damage.
Drawings
FIG. 1 is a schematic view of a continuous casting billet hot-feeding direct-rolling automatic ejection device (processing qualified hot billets);
FIG. 2 is a schematic diagram of a continuous casting billet hot-feeding direct-rolling automatic ejection device (for processing unqualified hot billets);
FIG. 3 is a flow chart of the continuous casting billet hot-feeding direct-rolling automatic knockout method.
In the figure: 1-a cutting machine, 2-a conveying roller way, 3-a knockout roller way, 4-a hot conveying roller way, 5-a moving blank vehicle, 6-a thermodetector, 7-a hot conveying thermal detection switch, 8-a first lifting baffle, 9-a second lifting baffle, 10-a conveying thermal detection switch, 11-a hot blank and 12-a offline area.
Detailed Description
To further illustrate the technical means and effects of the present invention for solving the technical problems, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited by the scope of the claims.
Aiming at the problems brought forward by the background technology, the invention coordinates the action sequence of each device by controlling the arrangement position and the installation mode of the instruments, the functions of the instruments and the control method in the system, and the like, and automatically responds to various working conditions in the production, thereby fully automatically completing the blank discharging function of hot-conveying direct rolling, automatically sending qualified hot blanks to a hot-conveying roller way area in cycles and sending unqualified hot blanks to a offline area. In the production process, the time for processing qualified hot blanks and unqualified hot blanks is automatically determined without any manual intervention.
As shown in fig. 1 and fig. 2, an alternative embodiment of the continuous casting billet hot-conveying straight-rolling automatic discharging equipment has 8 parallel hot billet cutting conveying lines, each stream is provided with an independent cutting machine 1, a conveying roller bed 2, a first lifting baffle 8 and a thermodetector 6 in sequence, the conveying roller bed 2 consists of rollers arranged between the cutting machine 1 and the first lifting baffle 8, a conveying thermal detection switch 10 is vertically arranged at the top of the middle position of each stream of conveying roller bed 2, a hot billet is detected downwards, the conveying roller bed 2 is divided into a front half part from the cutting machine 1 to the conveying thermal detection switch 10 and a rear half part from the conveying thermal detection switch 10 to the first lifting baffle 8 according to the position of the conveying thermal detection switch 10, the conveying roller bed from the cutting machine 1 to the front half part of the conveying thermal detection switch 10 is also called as a cut roller bed, the first lifting baffle 8 is a discharging roller bed 3 shared by each stream, and a qualified hot billet conveying straight-rolling hot billet conveying roller bed 4 is arranged behind the discharging roller bed 3, a second lifting baffle 9 is arranged between the knockout roller way 3 and the hot delivery roller way 4, a billet moving vehicle 5 for processing unqualified hot billets is arranged at a waiting position on one side of the knockout roller way 3, the other side of the knockout roller way 3 is a lower line area 12 of the unqualified hot billets, a hot delivery heat detection switch 7 is arranged on one side along the hot delivery roller way 4, the distance between the hot delivery heat detection switch 7 and the second lifting baffle 9 is greater than the length of the hot billets, and the hot billets are detected in the horizontal direction; the control system is not shown in the figure.
After the hot billet 11 is cut, the control system receives a cutting completion signal of the cutting machine 1, starts the conveying roller way 2 to convey the hot billet 11, when the front end of the hot billet 11 reaches the conveying heat detection switch 10, the conveying heat detection switch 10 senses the existence of the hot billet 11, and the conveying heat detection switch 10 detects the hot billet and sends a billet signal to the control system; when the tail end of the hot billet passes through the conveying thermal detection switch 10, the conveying thermal detection switch 10 senses that no hot billet exists and sends information to the control system, and the control system stops the operation of the roller way after cutting; when the front end of the hot billet 11 reaches the temperature detector 6, the temperature detector 6 detects that a hot billet signal is sent to the control system, the control system controls the rear half part of the conveying roller bed 2 to stop running, the hot billet 11 stops moving forwards, the temperature detector 6 detects the temperature of the hot billet and transmits the temperature to the control system, the control system times the hot billet 11, and whether the hot billet is qualified or not is judged according to the detected temperature of the hot billet 11 and the waiting time so as to carry out different treatments subsequently.
Fig. 1 is a schematic diagram of a continuous casting billet hot-conveying direct-rolling automatic ejection device for processing qualified hot billets, wherein the temperature is not lower than a set value, the hot billets with the waiting time not exceeding the limit are qualified hot billets, for the processing of the qualified hot billets, a first lifting baffle plate 8 and a second lifting baffle plate 9 are kept in a descending state, a control system sorts the qualified hot billets according to the waiting time, the qualified hot billets with the waiting time are in a front sequence, the qualified hot billets with the short waiting time are in a back sequence, a rear half part of a conveying roller bed 2 where the hot billets in the front sequence are located and an ejection roller bed 3 are sequentially started, the qualified hot billets are conveyed to the ejection roller bed 3 from the conveying roller bed 2 in front of the first lifting baffle plate 8, then conveyed to a hot-conveying roller bed 4 from the ejection roller bed 3, and conveyed to a direct-rolling process for use.
Fig. 2 is a schematic diagram of a continuous casting billet hot-conveying direct-rolling automatic ejection device for processing unqualified hot billets, wherein the hot billets with the temperature lower than a set value or the waiting time exceeding the limit are unqualified hot billets, and when the unqualified hot billets with the temperature lower than the set value exist, the hot billets are not processed immediately, and only when the unqualified hot billets with the waiting time exceeding the period exist and the control system judges that the ejection roller bed 3 does not have hot billets, the unqualified hot billets are processed: the second lifting baffle 9 is lifted, the control system starts the rear half part of the conveying roller bed 2 and the ejection roller bed 3 where all unqualified hot blanks are located, after all unqualified hot blanks are conveyed to the ejection roller bed 3, the first lifting baffle 8 is lifted, the blank moving vehicle 5 is controlled to move from the waiting position on one side of the ejection roller bed 3 to the offline area on the other side of the ejection roller bed 3, and all unqualified hot blanks are pushed to the offline area 12; then the first lifting baffle 8 and the second lifting baffle 9 are lowered, and the blank moving vehicle 5 returns to the waiting position to wait. The control system judges that the knockout roller 3 has no hot billet in two cases: firstly, calculating that the travel distance of the qualified hot blank is greater than the sum of the length of a damaged roller way and the length of the hot blank by the sending time and the sending speed of the qualified hot blank, and indicating that the qualified hot blank has traveled from the position of a conveying roller way with the front end in front of a first lifting baffle plate to the tail end of the hot blank and passes through a second lifting baffle plate, wherein the sending period is not finished, and the subsequent qualified hot blank is not sent, so that the qualified hot blank does not exist on a blank-discharging roller way; and secondly, the hot delivery roller way is detected to have the hot billet through the hot delivery heat detection switch, the hot delivery heat detection switch is arranged at the position which is away from the second lifting baffle plate by more than the length of the hot billet, the hot billet detected by the hot delivery heat detection switch indicates that the front end of the hot billet reaches the position of the hot delivery heat detection switch, the tail end of the hot billet must already pass through the position of the second lifting baffle plate, the sending period is not finished at this moment, the subsequent qualified hot billet is not sent, and therefore the qualified hot billet cannot be sent on the billet discharging roller way.
The control system of the continuous casting billet hot-conveying direct-rolling automatic ejection device automatically controls the action logics, the production period and the production speed of a conveying roller way, a first lifting baffle plate, an ejection roller way, a second lifting baffle plate, a billet moving vehicle and other devices according to the production process parameters of casting billets, related devices and detection instruments through a certain control method, and automatically finishes the ejection process of a continuous casting machine according to various working conditions in production. The conveying heat detection switch and the heat conveying heat detection switch are used for detecting that a hot blank exists at the position and sending a hot blank existence signal to the control system; the temperature measuring instrument has the functions of detecting the hot blank at the position, measuring the temperature value of the hot blank at the position and sending the temperature value to the control system; the blank moving vehicle can send a position signal to the control system.
As shown in fig. 3, the flow of the continuous casting billet hot-feeding direct-rolling automatic ejection method for processing a hot billet by using the continuous casting billet hot-feeding direct-rolling automatic ejection device comprises the following steps:
s101: cutting the hot blank by a cutting machine according to requirements, and conveying the hot blank to the front end of the hot blank by a conveying roller way to reach a temperature measuring instrument after the cutting is finished;
s102: the temperature measuring instrument detects the temperature of the hot blank and transmits the detected information of the hot blank and the temperature measured value of the hot blank to the control system;
s103: the control system compares the temperature measured value of the hot blank with a set value, and judges whether the hot blank is qualified: when the measured value is lower than the set value, the hot blank is unqualified and is processed according to the step S104; when the measured value is not lower than the set value, the blank is qualified and processed according to the step S105;
s104: the control system starts the conveying roller way and the knockout roller way to completely convey the hot billets onto the knockout roller way and then stops, the control system starts the billet moving handle to move the unqualified hot billets out of the production line, and then the billet moving vehicle returns to one side of the knockout roller way where the billet moving vehicle is originally located to wait;
s105: and the control system starts the conveying roller way and the knockout roller way to convey the qualified hot billets to the hot conveying roller way, and the qualified hot billets are conveyed to the direct rolling process for use by the hot conveying roller way.
In the following, the control procedure of the embodiment will be described in more detail, and for the convenience of the case description, some letters, numbers or symbols will be used, and the meaning of the letters, numbers or symbols is defined as follows:
n (n ═ 1,2,3.·) denotes a strand production line (also called the number of streams), and if this number occurs before the letter, 1 denotes the 1 st stream line and 5 denotes the 5 th stream line;
the low speed of the roller way is V1At high roller speed V2；
By T0Timing cycles, i.e. timing times in accordance with T0Increasing;
sending hot blank cycle time T, namely the interval time of sending hot blanks twice in the same flow; t for actual occurrence interval time valueaRepresents;
time of hot billet age nT of each stream production line nTaThe time from the position of the hot blank head thermometer to the selected sending is as follows: 1Ta30 seconds, which means that the hot billet age of the 1 st stream is 30 seconds until the current time; 5Ta90 seconds, which means that the hot billet age of the 5 th stream is 90 seconds until the current time;
age of billet overtime time TcI.e. time of age of billet per stream nTa≥TcIndicating the age overtime of the hot flow billet;
the delivery heat per stream switch is denoted nR1When there is a hot billet, it is denoted as nR11, otherwise, the nR1 is 0 when no hot blank exists;
each flow thermometer is denoted nX1The hot blank signal at the thermodetector per stream is denoted as nX1RThe temperature signal at the thermodetector per stream is denoted as nX1W(ii) a When there is a hot blank thereThen is recorded as nX1R1, on the contrary, no hot billet is marked as nX1R0; when the actual temperature of the hot billet is higher than the temperature qualified parameter given by the process, the system judges that the hot billet is qualified and records the qualified hot billet as nX1W1 is ═ 1; otherwise, the system judges that the hot blank is unqualified and records the unqualified hot blank as nX1W＝0；
The heat delivery and heat detection switch is represented as R2When there is a hot billet, it is denoted as R2When no hot billet is present, it is designated as R2＝0；
The position and the state of the blank moving vehicle are judged by K, K is 1, the blank moving vehicle starts to process unqualified hot blanks to process the finished process position, and K is 0, the blank moving vehicle returns to the offline waiting position to wait;
using nY to represent that the hot blank which needs to be sent is selected, when nY is 1, representing that the nth flow hot blank is selected to be sent, and if the nth flow hot blank is qualified, transmitting the nth flow hot blank to a hot conveying roller way; if the nth flow heat blank is unqualified, sending the nth flow heat blank to a offline area;
the signal jumps from the 0 state to the 1 state in 1 ↓; the signal transitions from the 1 state to the 0 state at 0 ≠ x.
In the embodiment shown in fig. 1, the cutting machine 1 cuts the hot billet 11 of the current flow, and after the cutting is completed, the front half part of the rollgang 2, i.e. the cut rollgang, is driven at a speed V1Conveying hot blank, as conveying heat-detecting switch nR1After the nth flow is cut, the speed of the roller way stops becoming a free roller, and the conveying roller way 2 conveys the hot blank 11 to a blank head to a thermodetector nX1Where the thermo detector detects the hot billet, i.e. when nX1RWhen the speed of the roller conveyor is equal to 1 ×) and the roller conveyor is stopped, each flow finishes the respective blank conveying task; when the hot roller conveying zone can receive the hot blank, the rear half part of the roller conveying zone and the blank discharging roller bed 3 are at a speed V according to the sending sequence at intervals of T period time2The qualified hot billet 11 is conveyed to a hot roller conveying area through a knockout roller 3 one by one, and a thermodetector detects nX1R0 ↓, the rear half speed of the rollgang is V2When the speed of the roller way is kept consistent with the speed of the roller way after cutting, the qualified hot blank of the 5 th flow in the previous period is sent to a hot roller sending area, the 6 th flow and the 7 th flow are qualified hot blanks in the current period, and the control system selects and sends the 6 th flowAnd (4) flowing qualified hot blanks, and waiting for the next cycle of conveying other flowing hot blanks.
In the embodiment shown in fig. 2, when the age of the hot billet is over, the triggering sending unqualified hot billet setting K is 1, the second lifting baffle 9 is lifted, and the conveying roller way and the knockout roller way are at the speed V1Conveying all unqualified hot billets (such as the flow 2,3 and 5 in the figure) to a billet discharging roller way when a temperature measuring instrument is 2X1R＝0↑、3X1R＝0↑、5X1RWhen the blank moving vehicle 5 moves, the first lifting baffle 8 is lifted, and the unqualified hot blanks flowing in the 2 nd, the 3 rd and the 5 th flows are pushed to the lower line area 12; after the unqualified hot blank is processed and the blank discharging area is reached, the first lifting baffle 8 and the second lifting baffle 9 are lowered, the reset K is 0, the normal production state that the qualified hot blank is conveyed to the hot roller conveying area is automatically recovered, the blank moving vehicle 5 returns to the waiting area, the process is repeated, and the automatic blank discharging of the scheme is realized.
A conveying thermal detection switch 10 is arranged in the middle of the conveying roller bed 2 of each flow (namely after the cut roller bed), and the function of the conveying thermal detection switch 10 in the control is that nR when the tail of the hot blank 11 leaves the conveying thermal detection switch 101When the roller way is cut, the roller way stops, and the speed of the roller way is changed from V1The change is 0, and the roller way becomes a free roller after cutting.
And a temperature measuring instrument 6 is arranged between the last group of rollers of the conveying roller bed 2 of each flow and the lifting position of the first lifting baffle 8, and each flow is vertically arranged and downwards detects the hot blank 11. When the hot billet 11 passes the temperature detector 6, the temperature detector 6 sends a billet signal and a hot billet temperature signal to the control system. In the control, the function is that when the hot blank is detected, nX1R1 ↓, the second half speed of the rollgang 2 is V1Becomes 0; second, when the hot billet is sent, the tail of the hot billet leaves, nX1RChanging the speed of the rear half part of the rollgang 2 from the current speed to the speed consistent with the speed of the roller way after the front half part is cut; and the third function is to provide detection data for the control system to judge whether the hot blank is qualified.
The hot feeding heat detection switch 7 is arranged in the hot feeding roller way 4 and is at a certain distance L from the second lifting baffle 9, wherein L is larger than the length of the hot blank, the hot feeding heat detection switch 7 is horizontally installed in a correlation mode, and the hot blank 11 is horizontally detected; in control it acts as heatWhen the heat delivery detection switch 7 detects the hot blank, R21 × (or) or when the control system judges that the knockout roll table does not have qualified hot billet according to qualified hot billet sending period, the flow of sending unqualified hot billet can be triggered, otherwise, the existing unqualified hot billet stays in front of the temperature measuring instrument behind the rollgang 2 to wait.
In the embodiment of FIG. 2, both stream 6 and stream 7 have acceptable hot billets, i.e., 6X1W＝1，7X1WThe thermometers of flow 6 and 7 in the figure are highlighted in grey squares, and 6T is known by the control system timinga180 seconds, 7TaAnd (5) selecting n as 6, 6Y as 1 and activating to send the 6 th hot blank to the hot roller conveying table when the time is 100 seconds.
In the embodiment of FIG. 3, T is setc200 seconds. If the 2 nd, 3 rd and 5 th flows are unqualified hot billets, 2X1W＝0，3X1W＝0，5X1W0, 2T is known by the control system timinga200 seconds, 3Ta100 seconds, 5TaThe method comprises the steps of carrying out unqualified hot billet treatment when the time is 20 seconds, namely the hot billet with overdue period in the flow 2 is selected by a control system, selecting n to be 2,3 and 5, 2Y to be 1, 3Y to be 1 and 5Y to be 1, setting a billet moving vehicle to be 1, lifting a second lifting baffle plate 9, activating and sending the hot billets of the flow 2, the flow 3 and the flow 5 to a billet discharging roller way, and then carrying out 2X hot billet treatment after the hot billets of the flow 2, the flow 3 and the flow 5 are sent to the billet discharging roller way1R＝0↑、3X1R＝0↑、5X1R0 ↓, the first lifting baffle 8 of the corresponding 2 nd flow, 3 rd flow and 5 th flow rises, then the blank moving vehicle 5 pushes the unqualified hot blanks to the offline area 12, after the blank moving vehicle 5 reaches the offline area 12, the first lifting baffle 8 and the second lifting baffle 9 fall, the reset K is 0, and the blank moving vehicle 5 returns to the waiting position.
According to the examples, the automatic blank discharging process of the hot-feeding straight rolling is completed through logic control. The present invention is not limited to the above embodiments, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention. The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a continuous casting billet is sent to automatic ejection equipment of direct rolling that send hot which characterized in that: the device comprises a cutting machine, a conveying roller way, a knockout roller way and a hot conveying roller way which are sequentially arranged along the moving direction of a hot blank, wherein a blank moving vehicle is arranged on one side of the knockout roller way; the control system times the hot blanks detected by the temperature measuring instrument, and the control system sequentially conveys the qualified hot blanks on each hot blank cutting conveying line to the hot conveying roller way according to time sequence; the control system is respectively connected with the cutting machine, the conveying roller way, the knockout roller way, the hot conveying roller way and the blank moving vehicle; the cutting machine cuts hot blanks, the control system starts the conveying roller way to convey the hot blanks after receiving a cutting completion signal, when the front ends of the hot blanks are conveyed to the positions of the thermometers, the thermometers transmit information of the hot blanks and measured hot blank temperature values to the control system, the control system times the hot blanks and controls the conveying roller way to stop allowing the hot blanks to wait at the positions of the thermometers, and the control system compares the temperature measurement values of the hot blanks with set values to judge whether the hot blanks are qualified or not: when the measured value is lower than the set value or the waiting time of the hot billet exceeds the period, the hot billet is unqualified, the control system starts the conveying roller way and the ejection roller way to completely convey the unqualified hot billet to the ejection roller way and then stops, the control system starts the blank moving handle to move the unqualified hot billet out of the production line, and then the blank moving vehicle returns to one side of the original ejection roller way to wait; and when the measured value is not lower than the set value, the qualified hot blank is conveyed to the ejection roller way completely by the control system starting the conveying roller way and the ejection roller way, the conveying roller way stops, the control system starts the hot conveying roller way, the qualified hot blank is conveyed to the hot conveying roller way from the ejection roller way, and the qualified hot blank is conveyed to the direct rolling process for use by the hot conveying roller way.
2. The continuous casting billet hot-feeding direct-rolling automatic ejection device according to claim 1, characterized in that: the first lifting baffle is connected with the control system, when the unqualified hot billets are moved out of the production line by the billet moving handle, the first lifting baffle rises, and the first lifting baffle falls after the unqualified hot billets are moved out of the production line.
3. The continuous casting billet hot-feeding direct-rolling automatic ejection device according to claim 1, characterized in that: the hot billet conveying device is characterized by further comprising a second lifting baffle, the second lifting baffle is arranged between the billet discharging roller way and the hot conveying roller way, the second lifting baffle is connected with the control system, when the unqualified hot billets are moved out of the production line by the billet moving handle, the second lifting baffle is lifted, and the second lifting baffle is lowered after the unqualified hot billets are moved out of the production line.
4. The continuous casting billet hot-feeding direct-rolling automatic ejection device according to claim 3, characterized in that: the control system further comprises a hot conveying hot detection switch, the hot conveying hot detection switch is installed on one side of the hot conveying roller way along the line, the distance between the hot conveying hot detection switch and the second lifting baffle is larger than the length of the hot blank, and the hot blank is detected in the horizontal direction.
5. The continuous casting billet hot-feeding direct-rolling automatic ejection device according to claim 1, characterized in that: the control system also comprises a conveying thermal detection switch, the conveying thermal detection switch is arranged vertically above the middle part of the conveying roller way, and the conveying thermal detection switch detects the hot blank downwards; the position of the conveying heat detection switch is used for dividing the conveying roller way into a front half part and a rear half part, and the front half part and the rear half part run at different speeds as required under the control of the control system.
6. The continuous casting billet hot-feeding direct-rolling automatic ejection device according to claim 1, characterized in that: when only one hot blank cutting conveying line has unqualified hot blanks with the temperature measurement value lower than the set value, the control system does not immediately process the unqualified hot blanks and still conveys the qualified hot blanks by other hot blank cutting conveying lines; when the control system judges that the knockout roller bed has no hot billets and the cutting conveying line has unqualified hot billets with the waiting time length exceeding the time period, all the conveying roller beds and the knockout roller beds with the unqualified hot billets are started, all the unqualified hot billets are conveyed to the knockout roller beds, then the billet moving vehicle is started, and all the unqualified hot billets are moved out of the production line.
7. A continuous casting billet hot delivery direct rolling automatic blank discharging method is characterized in that: use of the automatic slab ejection apparatus for slab hot-rolling of a continuous casting slab according to any one of claims 1 to 6, comprising the steps of:
s101: cutting the hot blank by a cutting machine according to requirements, and conveying the hot blank to the front end of the hot blank by a conveying roller way to reach a temperature measuring instrument after the cutting is finished;
s102: the temperature measuring instrument detects the temperature of the hot blank and transmits the detected information of the hot blank and the temperature measured value of the hot blank to the control system;
s103: the control system compares the temperature measured value of the hot blank with a set value, and judges whether the hot blank is qualified: when the measured value is lower than the set value, the hot blank is unqualified and is processed according to the step S104; when the measured value is not lower than the set value, the blank is qualified and processed according to the step S105;
when a plurality of hot billet cutting conveying lines arranged in parallel are arranged in front of the knockout roller way, the control system also records the time when the front end of each hot billet on each hot billet cutting conveying line reaches the detection area of the thermodetector; the temperature measuring instrument is arranged vertically above the position of the last group of rollers of the conveying roller way and is used for detecting the hot blank downwards;
s104: the control system starts the conveying roller way and the knockout roller way to completely convey the hot billets onto the knockout roller way and then stops, the control system starts the billet moving handle to move the unqualified hot billets out of the production line, and then the billet moving vehicle returns to one side of the knockout roller way where the billet moving vehicle is originally located to wait;
s105: and the control system starts the conveying roller way and the knockout roller way, sequentially conveys the qualified hot billets to the hot conveying roller way according to the sequence of the time when all the qualified hot billets enter the detection area, and conveys the qualified hot billets to the direct rolling process for use.
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| CN109746405B (en) * | 2019-03-19 | 2020-09-25 | 河钢股份有限公司承德分公司 | Automatic control method and device for casting blank roller way, terminal equipment and storage medium |
| CN110560651B (en) * | 2019-09-16 | 2021-03-23 | 中冶南方连铸技术工程有限责任公司 | Method for judging cutting-off of continuous casting billet |
| CN111659866B (en) * | 2020-07-30 | 2022-03-08 | 北京中远通科技有限公司 | Knockout control method and knockout control equipment for continuous casting production |
| CN112222207A (en) * | 2020-08-21 | 2021-01-15 | 河钢股份有限公司承德分公司 | Automatic hot-feeding and direct-rolling system of 6-flow square billet continuous casting machine |
| CN112371938B (en) * | 2020-10-09 | 2021-12-24 | 中冶南方连铸技术工程有限责任公司 | Method, device and equipment for optimizing action cycle of blank moving vehicle and storage medium |
| CN112570677A (en) * | 2020-10-27 | 2021-03-30 | 唐山钢铁集团微尔自动化有限公司 | Automatic blank conveying control method |
| CN114833202B (en) * | 2022-04-07 | 2024-04-12 | 中冶赛迪信息技术(重庆)有限公司 | Method, system, medium and electronic terminal for picking blanks to improve average temperature of straight rolling |
| CN114700376A (en) * | 2022-04-19 | 2022-07-05 | 唐山港陆钢铁有限公司 | Low-energy-consumption continuous casting billet direct rolling process method |
| CN114951581B (en) * | 2022-06-30 | 2023-08-15 | 山东钢铁集团永锋临港有限公司 | Automatic control method for hot conveying of small square billets |
| CN115194110B (en) * | 2022-07-22 | 2023-09-08 | 重庆钢铁股份有限公司 | Automatic billet discharging system for continuous casting of billets and control method thereof |
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