CN110639952A - Hot conveying method for medium plate blank - Google Patents
Hot conveying method for medium plate blank Download PDFInfo
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- CN110639952A CN110639952A CN201811208725.4A CN201811208725A CN110639952A CN 110639952 A CN110639952 A CN 110639952A CN 201811208725 A CN201811208725 A CN 201811208725A CN 110639952 A CN110639952 A CN 110639952A
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- plate blank
- deburring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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Abstract
The invention relates to a hot conveying method for a medium plate blank, which comprises the following specific steps: A. the detector tracks the operation and position of the slab; B. the detector judges whether the plate blank enters the operation range of the alignment device; C. the alignment device aligns the plate blank; D. the detector judges whether the plate blank enters the operation range of the flame cutting machine or not; E. measuring and correcting the length of the plate blank by a laser measuring system equipped with the flame cutting machine; F. according to the length of the daughter board blanks given by the system, the length tolerance of the slab with qualified size is evenly distributed to each daughter board blank, and then the cutting trolley of the flame cutting machine performs secondary cutting on the slab under the guidance of the laser measuring device; G. the detector judges whether the plate blank enters the operation range of the number spraying machine; H. the system sends an instruction to the number spraying machine to spray the number to the plate blank; I. the detector judges whether the plate blank enters the operation range of the deburring machine or not; J. sending a burr removing instruction; K. feeding the plate blank into a furnace; and L, arranging the slab to be lifted by a monitoring person. The method has the characteristics of improving the hot delivery rate of the plate blank, reducing the energy consumption of the heating furnace, reducing the production cost, improving the automation degree of equipment, improving the working environment of staff and the like.
Description
Technical Field
The invention belongs to the technical field of metal material processing, and relates to a hot conveying method for a medium plate blank.
Background
In order to improve the competitiveness of enterprises, modern steel enterprises can reduce the production cost by the way of the best way, wherein the reduction of energy consumption is a main feasible path. For steel rolling production lines, particularly for medium plate production lines, hot feeding of slabs into the furnace is a significant energy consumption reduction measure.
Due to the wide variation range of the size and specification of the finished product, the medium plate steel rolling production line needs plate blanks with various length and dimensions in the actual production. However, in order to improve the production efficiency of the continuous casting production line, the length of the produced slab is often relatively single, and the continuous casting production line cannot produce the slab according to the size of the slab required by the steel rolling production line.
In order to improve the hot conveying rate of the plate blank, the traditional solution is to communicate a furnace-entering roller way of a continuous casting production line and a steel rolling production line by utilizing a conveying roller way, so that the small part of the plate blank can directly enter the furnace to realize hot conveying when the length and the size of the small part of the plate blank meet the direct furnace-entering production condition. For most slabs which do not meet the condition of direct feeding, the slabs need to be hung off line by a crown block, and after the temperature of the slabs is reduced to normal temperature, the slabs are manually cut off line into the length required by a steel rolling production line (called secondary cutting for short). However, in the steel rolling production, the secondary cut slab cooled to the normal temperature needs to be reheated in the heating furnace, and the heat of the slab before the off-line process cannot be utilized, which results in high energy consumption.
In addition, some steel grades (such as die steel) need to be cut at the temperature of more than 200 ℃ due to the characteristic requirements (warm cutting for short), otherwise quality problems are easy to occur, conventional manual off-line cutting requires that the plate blank is cooled to normal temperature, so warm cutting cannot be realized by conventional means, and the steel grades with special requirements can only be organized and produced by continuously casting blanks with existing length and size, so that the production efficiency and the cost are seriously influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method for carrying out hot conveying on medium plate blanks with various length sizes by carrying out online secondary cutting on high-temperature plate blanks, which has the characteristics of improving the hot conveying rate of the plate blanks, reducing the energy consumption of a heating furnace, reducing the production cost, improving the automation degree of equipment, improving the working environment of workers and the like, and is beneficial to the production organization of special steel types such as die steel and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for hot conveying medium plate blanks uses equipment comprising a conveying roller way, an alignment device, a flame cutting machine with a laser measurement function, a deburring machine, a number spraying machine, a detector and a control system; the method comprises the following specific steps:
A. the detector tracks the operation and position of the slab conveyed from the continuous casting production line;
B. the detector judges whether the plate blank enters the operation range of the alignment device, if not, the step A is returned, and if yes, the step C is switched to;
C. the alignment device aligns the plate blank, so that the rectangular degree of the plate blank after secondary cutting is guaranteed, and the yield of finished steel plates is improved. The alignment device enables the plate blank to be close to one end of the roller way, so that the side surface is convenient to spray marks, and the plate blank is continuously conveyed to the position of the flame cutting machine after being aligned;
D. after the step C, the detector judges whether the plate blank enters the operation range of the flame cutting machine, if not, the step C is returned, and if yes, the step E is returned;
E. the laser measuring system equipped with the flame cutting machine measures the length of the plate blank, and the length and the size of the plate blank sent by the control system are corrected, if the size difference value exceeds a set value, an alarm is sent, the step L is carried out after the confirmation of monitoring personnel, and the next step F is carried out if the size is qualified;
F. evenly distributing the length tolerance of the slabs with qualified sizes to each daughter board blank according to the length of the daughter board blank given by the system, then accurately moving a cutting trolley of a flame cutting machine to a cutting position under the guidance of a laser measuring device, starting to perform secondary cutting on the slab, moving the daughter board blank forward on a conveying roller way after the cutting is completed, and entering a next step G or step I, wherein the step G does not need to be entered into a furnace directly, and the step I needs to be entered into the furnace directly;
G. the detector judges whether the plate blank enters the operation range of the number spraying machine, if not, the step F is returned, and if yes, the step H is returned;
H. the system sends an instruction to the number spraying machine, the plate blank is sprayed with the number, and the plate blank is lifted off the roller way after the number is sprayed;
I. the detector judges whether the plate blank enters the operation range of the deburring machine, if not, the step F is returned, and if so, the step J is returned;
J. the system sends out a burr removing instruction to the deburring machine, the deburring machine carries out deburring operation on the plate blank according to a mode set by the system, and the next step K is carried out after the deburring of the plate blank is finished;
K. feeding the plate blank which needs to be directly fed into the furnace and is subjected to deburring;
and L, arranging the slab to be lifted by a monitoring person.
The deburring machine in the step J is provided with three deburring modes which are respectively as follows: the head deburring, the head and the tail deburring are carried out, and the corresponding plate blanks are the first sub plate blank, the middle sub plate blank and the last sub plate blank respectively.
The invention has the positive effects that: the on-line secondary cutting of the high-temperature slabs is realized, so that slabs with various length sizes can be fed into the furnace in a hot mode, the whole process is efficient and compact, the feeding temperature of the secondarily cut slabs into the furnace can reach over 600 ℃, and the energy consumption of slab heating is reduced. Compared with the traditional manual secondary cutting after the plate blank is cooled to the normal temperature, the plate blank feeding temperature is greatly improved, the plate blank heating energy consumption is reduced, the cutting efficiency is improved, and the labor intensity is reduced. The invention is convenient to implement and is widely suitable for various medium plate production lines.
Drawings
FIG. 1 is a block diagram of the production process of the present invention.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
Referring to fig. 1, the used equipment comprises a conveying roller way, an alignment device, a flame cutting machine with a laser measurement function, a deburring machine, a number spraying machine, a detector and a control system; the method comprises the following specific steps:
A. the detector tracks the operation and position of the slab conveyed from the continuous casting production line;
B. the detector judges whether the plate blank enters the operation range of the alignment device, if not, the step A is returned, and if yes, the step C is switched to;
C. the alignment device aligns the plate blank, so that the rectangular degree of the plate blank after secondary cutting is guaranteed, and the yield of finished steel plates is improved. The alignment device enables the plate blank to be close to one end of the roller way, so that the side surface is convenient to spray marks, and the plate blank is continuously conveyed to the position of the flame cutting machine after being aligned;
D. after the step C, the detector judges whether the plate blank enters the operation range of the flame cutting machine, if not, the step C is returned, and if yes, the step E is returned;
E. the laser measuring system equipped with the flame cutting machine measures the length of the plate blank, and the length and the size of the plate blank sent by the control system are corrected, if the size difference value exceeds a set value, an alarm is sent, the step L is carried out after the confirmation of monitoring personnel, and the next step F is carried out if the size is qualified;
F. evenly distributing the length tolerance of the slabs with qualified sizes to each daughter board blank according to the length of the daughter board blank given by the system, then accurately moving a cutting trolley of a flame cutting machine to a cutting position under the guidance of a laser measuring device, starting to perform secondary cutting on the slab, moving the daughter board blank forward on a conveying roller way after the cutting is completed, and entering a next step G or step I, wherein the step G does not need to be entered into a furnace directly, and the step I needs to be entered into the furnace directly;
G. the detector judges whether the plate blank enters the operation range of the number spraying machine, if not, the step F is returned, and if yes, the step H is returned;
H. the system sends an instruction to the number spraying machine, the plate blank is sprayed with the number, and the plate blank is lifted off the roller way after the number is sprayed;
I. the detector judges whether the plate blank enters the operation range of the deburring machine, if not, the step F is returned, and if so, the step J is returned;
J. the system sends out a burr removing instruction to the deburring machine, the deburring machine carries out deburring operation on the plate blank according to a mode set by the system, and the next step K is carried out after the deburring of the plate blank is finished;
K. feeding the plate blank which needs to be directly fed into the furnace and is subjected to deburring;
and L, arranging the slab to be lifted by a monitoring person.
The deburring machine in the step J is provided with three deburring modes which are respectively as follows: the head deburring, the head and the tail deburring are carried out, and the corresponding plate blanks are the first sub plate blank, the middle sub plate blank and the last sub plate blank respectively.
Example 1:
the length of a qualified slab continuously produced by a certain continuous casting production line is 7.5m, the length of a slab required by the production of a steel rolling production line is 2.5m, and when the slab with the length of 7.5m is conveyed to the aligning device through a roller way, the slab is aligned, so that the central line of the slab is parallel to the central line of the roller way, the rectangular degree of the daughter board after secondary cutting is ensured, and the yield of a finished steel plate is further improved; after the alignment is finished, the blank is continuously conveyed to a flame cutting machine, the laser measuring device measures the length of the blank, the blank is corrected with the length and the size of the blank sent by the control system, and if the size difference value exceeds a set value, an alarm is sent out and is confirmed by monitoring personnel; if the size is qualified, the cutting trolley moves to an accurate cutting position according to an instruction issued by a control system, and starts to perform online sizing secondary cutting on the plate blank, so that the original plate blank with the length of 7.5m is cut into three sub-plate blanks with the length of 2.5 m; after secondary cutting is finished, conveying the three sub-plate blanks to a deburring machine position one by one through a conveying roller way, and deburring the sub-plate blanks according to an instruction given by a control system, wherein the first sub-plate blank only deburres the tail part, the second sub-plate blank deburres both the head part and the tail part, and the third sub-plate blank deburres only the head part; the sub-plate blanks after deburring are conveyed to the steel loading position of the heating furnace by the roller way and directly fed into the furnace for production, thereby realizing the hot feeding production of the plate blanks subjected to high-temperature online secondary cutting.
Example 2:
the length of a qualified slab continuously produced by a certain continuous casting production line is 7.5m, the length of a slab required by the production of a steel rolling production line is 2.5m, and when the slab with the length of 7.5m is conveyed to the aligning device through a roller way, the slab is aligned, so that the central line of the slab is parallel to the central line of the roller way, the rectangular degree of the slab after secondary cutting is ensured, and the yield of a finished steel plate is improved; after the alignment is finished, the blank is continuously conveyed to a flame cutting machine, the laser measuring device measures the length of the blank, the blank is corrected with the length and the size of the blank sent by the control system, and if the size difference value exceeds a set value, an alarm is sent out and is confirmed by monitoring personnel; if the size is qualified, the cutting trolley moves to an accurate cutting position according to an instruction issued by a control system, and starts to perform online sizing secondary cutting on the plate blank, so that the original plate blank with the length of 7.5m is cut into three sub-plate blanks with the length of 2.5 m; after secondary cutting is finished, conveying the three sub-plate blanks to a deburring machine position one by one through a conveying roller way, and deburring the sub-plate blanks according to an instruction given by a control system, wherein the first sub-plate blank only deburres the tail part, the second sub-plate blank deburres both the head part and the tail part, and the third sub-plate blank deburres only the head part; according to the existing production plan, only two daughter board blanks with the length of 2.5m need to be put into a furnace for production, and the other daughter board blank with the length of 2.5m is subjected to number spraying marking by a number spraying machine, so that the subsequent management is facilitated, and then the daughter board blanks are off-line and stored for later use; two daughter board blanks needing to be directly fed into the furnace for production are conveyed to the steel loading position of the heating furnace by the roller way and are directly fed into the furnace for production, thereby realizing the hot feeding production of the high-temperature on-line secondary cutting board blanks into the furnace.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A method for hot conveying medium plate blanks uses equipment comprising a conveying roller way, an alignment device, a flame cutting machine with a laser measurement function, a deburring machine, a number spraying machine, a detector and a control system; the method is characterized by comprising the following specific steps:
A. the detector tracks the operation and position of the slab conveyed from the continuous casting production line;
B. the detector judges whether the plate blank enters the operation range of the alignment device, if not, the step A is returned, and if yes, the step C is switched to;
C. the alignment device aligns the plate blank, so that the rectangle degree of the plate blank after secondary cutting is ensured, and the yield of the finished steel plate is improved; the alignment device enables the plate blank to be close to one end of the roller way, so that the side surface is convenient to spray marks, and the plate blank is continuously conveyed to the position of the flame cutting machine after being aligned;
D. after the step C, the detector judges whether the plate blank enters the operation range of the flame cutting machine, if not, the step C is returned, and if yes, the step E is returned;
E. the laser measuring system equipped with the flame cutting machine measures the length of the plate blank, and the length and the size of the plate blank sent by the control system are corrected, if the size difference value exceeds a set value, an alarm is sent, the step L is carried out after the confirmation of monitoring personnel, and the next step F is carried out if the size is qualified;
F. evenly distributing the length tolerance of the slabs with qualified sizes to each daughter board blank according to the length of the daughter board blank given by the system, then accurately moving a cutting trolley of a flame cutting machine to a cutting position under the guidance of a laser measuring device, starting to perform secondary cutting on the slab, moving the daughter board blank forward on a conveying roller way after the cutting is completed, and entering a next step G or step I, wherein the step G does not need to be entered into a furnace directly, and the step I needs to be entered into the furnace directly;
G. the detector judges whether the plate blank enters the operation range of the number spraying machine, if not, the step F is returned, and if yes, the step H is returned;
H. the system sends an instruction to the number spraying machine, the plate blank is sprayed with the number, and the plate blank is lifted off the roller way after the number is sprayed;
I. the detector judges whether the plate blank enters the operation range of the deburring machine, if not, the step F is returned, and if so, the step J is returned;
J. the system sends out a burr removing instruction to the deburring machine, the deburring machine carries out deburring operation on the plate blank according to a mode set by the system, and the next step K is carried out after the deburring of the plate blank is finished;
K. feeding the plate blank which needs to be directly fed into the furnace and is subjected to deburring;
and L, arranging the slab to be lifted by a monitoring person.
2. The method for hot-feeding a slab of medium plate according to claim 1, characterized in that: the deburring machine in the step J is provided with three deburring modes which are respectively as follows: the head deburring, the head and the tail deburring are carried out, and the corresponding plate blanks are the first sub plate blank, the middle sub plate blank and the last sub plate blank respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811208725.4A CN110639952A (en) | 2018-10-17 | 2018-10-17 | Hot conveying method for medium plate blank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811208725.4A CN110639952A (en) | 2018-10-17 | 2018-10-17 | Hot conveying method for medium plate blank |
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| CN110639952A true CN110639952A (en) | 2020-01-03 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811182A (en) * | 2009-02-25 | 2010-08-25 | 宝山钢铁股份有限公司 | Process for online cut-to-length cutting production of continuous casting slabs for heavy plate mill |
| CN202049371U (en) * | 2010-12-22 | 2011-11-23 | 鞍钢集团自动化公司 | Cutting control system for continuous casting slab |
| CN102581241A (en) * | 2012-02-27 | 2012-07-18 | 柳州钢铁股份有限公司 | Secondary automatic cutting system of continuous casting slab |
| CN202591568U (en) * | 2012-02-27 | 2012-12-12 | 柳州钢铁股份有限公司 | Secondary automatic cutting system for continuous casting sheet billet |
| CN106583466A (en) * | 2016-12-14 | 2017-04-26 | 四川德胜集团钒钛有限公司 | Rolled steel hot delivery and hot charging technology |
| CN206652838U (en) * | 2016-12-01 | 2017-11-21 | 上海亚新连铸技术工程有限公司 | A kind of wire rolling process units of low energy consumption |
-
2018
- 2018-10-17 CN CN201811208725.4A patent/CN110639952A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811182A (en) * | 2009-02-25 | 2010-08-25 | 宝山钢铁股份有限公司 | Process for online cut-to-length cutting production of continuous casting slabs for heavy plate mill |
| CN202049371U (en) * | 2010-12-22 | 2011-11-23 | 鞍钢集团自动化公司 | Cutting control system for continuous casting slab |
| CN102581241A (en) * | 2012-02-27 | 2012-07-18 | 柳州钢铁股份有限公司 | Secondary automatic cutting system of continuous casting slab |
| CN202591568U (en) * | 2012-02-27 | 2012-12-12 | 柳州钢铁股份有限公司 | Secondary automatic cutting system for continuous casting sheet billet |
| CN206652838U (en) * | 2016-12-01 | 2017-11-21 | 上海亚新连铸技术工程有限公司 | A kind of wire rolling process units of low energy consumption |
| CN106583466A (en) * | 2016-12-14 | 2017-04-26 | 四川德胜集团钒钛有限公司 | Rolled steel hot delivery and hot charging technology |
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