CN113426966B - Device and method for adjusting taper of continuous casting crystallizer - Google Patents
Device and method for adjusting taper of continuous casting crystallizer Download PDFInfo
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- CN113426966B CN113426966B CN202110654483.7A CN202110654483A CN113426966B CN 113426966 B CN113426966 B CN 113426966B CN 202110654483 A CN202110654483 A CN 202110654483A CN 113426966 B CN113426966 B CN 113426966B
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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
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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
- B22D11/168—Controlling or regulating processes or operations for adjusting the mould size or mould taper
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/241—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for measuring conicity
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Abstract
An apparatus and a method for adjusting the taper of a continuous casting crystallizer belong to the technical field of continuous casting crystallizer adjusting methods and are used for adjusting the taper of the continuous casting crystallizer under the condition without a taper instrument. The technical scheme is as follows: putting the hanging cone line into one side of the crystallizer, and enabling the distance between the hanging cone line and the center line of the crystallizer to be equal to a set value; adjusting the position of the adjacent narrow-face copper plate to enable the horizontal distance from the upper opening of the narrow-face copper plate to the hanging cone line to be equal to a set value; the method comprises the following steps of (1) holding a micrometer clamp, placing a connecting rod type inside micrometer with the length same as the width of a lower opening of a crystallizer into the lower opening of the crystallizer, and adjusting the position of the lower opening of a narrow-surface copper plate on the other side of the crystallizer to enable the width of the lower opening of the crystallizer to reach a set value; and placing the hanging cone line on the other side of the crystallizer, and adjusting the position of the upper opening of the narrow-face copper plate of the crystallizer to ensure that the horizontal distance between the upper opening of the narrow-face copper plate of the crystallizer and the hanging cone line is equal to a set value. The invention has simple using apparatus and simple and convenient operation steps, can quickly and accurately adjust the taper of the crystallizer under the condition of no taper instrument, and ensures the normal production.
Description
Technical Field
The invention relates to a device and a method for adjusting the taper of a continuous casting crystallizer under the condition of no taper instrument, belonging to the technical field of continuous casting crystallizer adjusting methods.
Background
Crystallizers are important equipment for continuous casting production. In order to reduce an air gap formed between the surface of a casting blank and a crystallizer in the continuous casting process, the inner cavity of the crystallizer is designed into a shape with a large upper opening and a small lower opening, namely the crystallizer needs to have a certain back taper, otherwise, heat transfer is influenced, the blank shell is too thin, the thickness is uneven, and steel leakage accidents are caused. For the traditional slab continuous casting crystallizer, because the section and the steel grade of each casting time are different, the taper of the crystallizer is also different, and the taper needs to be readjusted every time of inverted casting. At present, the taper of the crystallizer needs to be adjusted by using a taper instrument and a meter ruler, namely, the sizes of the upper opening and the lower opening of the crystallizer and the taper reach set values through the detection of the taper instrument and the measurement of the meter ruler. However, in the actual production process, due to reasons such as improper operation and equipment failure, the taper gauge is often damaged, so that the taper of the crystallizer cannot be judged and adjusted, and the casting machine cannot produce. Therefore, it is necessary to design a method for adjusting the taper of the crystallizer without a taper gauge to ensure that the production is normally carried out.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a device and a method for adjusting the taper of a continuous casting crystallizer, and the device and the method can be used for adjusting the taper of the crystallizer under the condition without a taper instrument, so that the sizes of an upper opening and a lower opening of the crystallizer and the taper reach set values, and the normal operation of production is ensured.
The technical scheme for solving the technical problems is as follows:
the utility model provides an adjust tapered utensil of continuous casting crystallizer, it is including hanging the awl line, micrometer holder, connect pole formula inside micrometer, micrometer holder is by the straight-bar, sleeve and handle are constituteed, sleeve and handle vertical welding respectively are in the lower extreme and the upper end of straight-bar, the straight-bar lower extreme is located telescopic intermediate position, sleeve internal diameter and the external diameter phase-match who connects pole formula inside micrometer, there is the locking screw on the sleeve both sides outer wall, connect pole formula inside micrometer to insert in the sleeve, fastening bolt fastens pole formula inside micrometer through the locking screw of sleeve outer wall.
The straight rod of the device for adjusting the taper of the continuous casting crystallizer is a steel pipe with the diameter of 10-50 mm.
The method for adjusting the taper of the continuous casting crystallizer by using the device comprises the following steps:
a. putting the hanging cone line into one side of the crystallizer, enabling the distance between the hanging cone line and the center line of the crystallizer to be equal to the width set value multiplied by 1/2 of the upper opening of the crystallizer (the width set value multiplied by 1/2-the width set value multiplied by 1/2 of the lower opening of the crystallizer), adjusting the position of the adjacent narrow-face copper plate of the crystallizer, enabling the horizontal distance between the upper opening of the narrow-face copper plate of the crystallizer and the hanging cone line to be equal to the width set value multiplied by 1/2-the width set value multiplied by 1/2 of the upper opening of the crystallizer, and enabling the lower opening of the narrow-face copper plate of the crystallizer to be tightly attached to the hanging cone line;
b. the method comprises the following steps that a micrometer clamping device is held by a hand, a connecting rod type internal micrometer with the length being the same as the width of a lower opening of a crystallizer is placed into the lower opening of the crystallizer, the connecting rod type internal micrometer is made to be tightly attached to the adjusted lower opening of a narrow-face copper plate of the crystallizer, the position of the lower opening of the narrow-face copper plate of the crystallizer on the other side of the crystallizer is adjusted, the lower opening of the narrow-face copper plate of the crystallizer is made to be tightly attached to the connecting rod type internal micrometer, and even if the width of the lower opening of the crystallizer reaches a set value;
c. and (3) placing the hanging cone line at the other side of the crystallizer, enabling the hanging cone line to be tightly attached to the lower opening of the narrow-face copper plate of the crystallizer, and adjusting the position of the upper opening of the narrow-face copper plate of the crystallizer to enable the horizontal distance between the upper opening of the narrow-face copper plate of the crystallizer and the hanging cone line to be equal to the width set value multiplied by 1/2-the width set value multiplied by 1/2 of the lower opening of the crystallizer.
In the step a, the step b and the step c, when the position of the upper opening of the crystallizer is adjusted, the horizontal distance between the upper opening of the narrow-face copper plate of the crystallizer and a hanging cone line is smaller than the width set value of the upper opening of the crystallizer multiplied by 1/2-the width set value of the lower opening of the crystallizer multiplied by 1/2, and then the narrow-face copper plate of the crystallizer is pulled outwards (in the direction opposite to the central line); when the position of the lower opening of the narrow-face copper plate of the crystallizer is adjusted, the lower opening of the narrow-face copper plate of the crystallizer is required to be away from a hanging cone line, and then the narrow-face copper plate of the crystallizer is pushed inwards (in the direction of a central line) to prevent the crystallizer from cone running.
The invention has the beneficial effects that:
in the traditional method, an operator uses a meter ruler to measure the width of the upper opening of the crystallizer, the width of the lower opening of the crystallizer cannot be actually measured, the taper can be measured only by a taper gauge, the width of the lower opening of the crystallizer is set by reverse thrust by combining the measured size of the upper opening of the crystallizer, and the width precision of the lower opening of the crystallizer is poor, so that the width precision of a casting blank is poor;
the invention can accurately measure and set the width of the lower opening of the crystallizer by clamping the connecting rod type inside micrometer through the clamp holder, the width precision of the produced casting blank is very high, and simultaneously, the width of the upper opening of the crystallizer can also be accurately measured and set, so that the obtained taper is equivalent to the measuring precision of a taper instrument.
The taper precision/mm measured by the traditional method is +/-0.01 mm, and the width precision/mm of the lower opening of the crystallizer is +/-3; the taper precision/mm measured by the invention is +/-0.02 mm, and the width precision/mm of the lower opening of the crystallizer is +/-0.01.
The method has the advantages of simple use of instruments, simple and convenient operation steps, short operation time and accurate result, can quickly and accurately adjust the taper of the crystallizer under the condition of no taper instrument, achieves the aim of ensuring the normal production, and is worth of popularization and use in the industry.
Drawings
FIG. 1 is a schematic view of a micrometer holder;
FIG. 2 is a schematic diagram of the operation of step a;
FIG. 3 is an operational schematic of step b;
FIG. 4 is an operational view of step c.
The figures are labeled as follows: the device comprises a hanging cone line 1, a crystallizer narrow-surface copper plate 2, a crystallizer wide-surface copper plate 3, a connecting rod type inside micrometer 4, a micrometer clamp 5, a straight rod 6, a sleeve 7, a handle 8 and a fastening bolt 9.
Detailed Description
The invention uses the hanging cone line 1, the micrometer clamping device 5 and the connecting rod type inside micrometer 4 as adjusting devices to replace a conicity instrument to adjust the conicity of the continuous casting crystallizer.
Fig. 1 shows that the micrometer holder 5 consists of a straight rod 6, a sleeve 7 and a handle 8. The straight rod 6 is formed by welding steel pipes with the diameter of 10-50mm, the sleeve 7 and the handle 8 are vertically welded at the lower end and the upper end of the straight rod 6 respectively, the lower end of the straight rod 6 is located in the middle of the sleeve 7, the diameter of the sleeve 7 is 20-50mm, the inner diameter of the sleeve 7 is matched with the outer diameter of the connecting rod type inside micrometer 4, locking screw holes are formed in the outer walls of the two sides of the sleeve 7, the connecting rod type inside micrometer 4 is inserted into the sleeve 7, and the fastening bolts 9 fasten the connecting rod type inside micrometer 4 through the locking screw holes in the outer wall of the sleeve 7.
Fig. 2, 3 and 4 show that the method for adjusting the taper of a continuous casting mold according to the present invention is performed by the following steps:
a. as shown in fig. 2, a hanging cone line 1 is put into one side of a crystallizer, the distance between the hanging cone line 1 and the center line of the crystallizer is equal to the width set value of the upper opening of the crystallizer multiplied by 1/2- (the width set value of the upper opening of the crystallizer multiplied by 1/2-the width set value of the lower opening of the crystallizer multiplied by 1/2), the position of the adjacent narrow-face copper plate 2 of the crystallizer is adjusted, the horizontal distance between the upper opening of the narrow-face copper plate 2 of the crystallizer and the hanging cone line 1 is equal to the width set value of the upper opening of the crystallizer multiplied by 1/2-the width set value of the lower opening of the crystallizer multiplied by 1/2, and the lower opening of the narrow-face copper plate 2 of the crystallizer is tightly attached to the hanging cone line 1;
in the process, when the position of the upper opening of the crystallizer is adjusted, the horizontal distance between the upper opening of the narrow-face copper plate 2 of the crystallizer and a hanging cone line 1 is smaller than the width set value multiplied by 1/2 of the upper opening of the crystallizer and the width set value multiplied by 1/2 of the lower opening of the crystallizer, and then the narrow-face copper plate 2 of the crystallizer is pulled outwards (in the direction opposite to the central line) to ensure that the horizontal distance between the upper opening of the narrow-face copper plate 2 of the crystallizer and the hanging cone line 1 is equal to the width set value multiplied by 1/2 of the upper opening of the crystallizer and the width set value multiplied by 1/2 of the lower opening of the crystallizer; when the position of the lower opening of the narrow-face copper plate 2 of the crystallizer is adjusted, the lower opening of the narrow-face copper plate 2 of the crystallizer is required to be away from the hanging cone line 1, and then the narrow-face copper plate 2 of the crystallizer is pushed inwards (in the direction of a central line) to enable the lower opening of the narrow-face copper plate of the crystallizer to be tightly attached to the hanging cone line 1 so as to prevent the crystallizer from cone running.
b. As shown in fig. 3, the micrometer holder 5 is held by hand, the extension rod type inside micrometer 4 with the same length as the width of the lower opening of the crystallizer is placed into the lower opening of the crystallizer, the extension rod type inside micrometer 4 is made to cling to the adjusted lower opening of the narrow-surface copper plate 2 of the crystallizer, and the position of the lower opening of the narrow-surface copper plate 2 of the crystallizer on the other side of the crystallizer is adjusted at the same time, so that the lower opening of the narrow-surface copper plate 2 of the crystallizer is made to cling to the extension rod type inside micrometer 4, even if the width of the lower opening of the crystallizer reaches a set value.
c. As shown in fig. 4, the hand-held micrometer holder 4 is moved out of the crystallizer, the hanging cone line 1 is placed at the other side of the crystallizer, the hanging cone line is tightly attached to the lower opening of the narrow-face copper plate 2 of the crystallizer, the position of the upper opening of the narrow-face copper plate 2 of the crystallizer is adjusted, and the horizontal distance between the upper opening of the narrow-face copper plate 2 of the crystallizer and the hanging cone line 1 is equal to the width set value of the upper opening of the crystallizer multiplied by 1/2-the width set value of the lower opening of the crystallizer multiplied by 1/2;
in the process, when the position of the upper opening of the narrow-face copper plate 2 of the crystallizer is adjusted, the horizontal distance between the upper opening of the narrow-face copper plate 2 of the crystallizer and a hanging cone line 1 is smaller than the width set value multiplied by 1/2 of the upper opening of the crystallizer and the width set value multiplied by 1/2 of the lower opening of the crystallizer, and then the narrow-face copper plate 2 of the crystallizer is pulled outwards (in the direction opposite to the central line) to ensure that the horizontal distance between the upper opening of the narrow-face copper plate 2 of the crystallizer and the hanging cone line 1 is equal to the width set value multiplied by 1/2 of the upper opening of the crystallizer and the width set value multiplied by 1/2 of the lower opening of the crystallizer.
Finally, the sizes of the upper opening and the lower opening of the crystallizer are checked again, and pouring can be prepared if the sizes meet the requirements.
One embodiment of the invention is as follows:
the diameter of a straight rod 6 of the micrometer holder 5 is 15mm, and the length of the straight rod is 1500 mm;
the inner diameter of the sleeve 7 of the micrometer holder 5 is 25mm, and the length is 600 mm;
the fastening bolt 9 has a diameter of 8 mm.
Claims (3)
1. A method for adjusting the taper of a continuous casting crystallizer is characterized in that: the taper adjusting device comprises a hanging taper line (1), a micrometer clamp (5) and a connecting rod type inside micrometer (4), wherein the micrometer clamp (5) consists of a straight rod (6), a sleeve (7) and a handle (8), the sleeve (7) and the handle (8) are respectively and vertically welded at the lower end and the upper end of the straight rod (6), the lower end of the straight rod (6) is located in the middle of the sleeve (7), the inside diameter of the sleeve (7) is matched with the outside diameter of the connecting rod type inside micrometer (4), locking screw holes are formed in the outer walls of two sides of the sleeve (7), the connecting rod type inside micrometer (4) is inserted into the sleeve (7), and a fastening bolt (9) fastens the connecting rod type inside micrometer (4) through the locking screw holes in the outer wall of the sleeve (7); the method comprises the following steps:
a. putting the hanging cone line (1) into one side of a crystallizer, enabling the distance between the hanging cone line and the center line of the crystallizer to be equal to the width set value of an upper opening of the crystallizer multiplied by 1/2- (the width set value of the upper opening of the crystallizer multiplied by 1/2-the width set value of a lower opening of the crystallizer multiplied by 1/2), adjusting the position of a narrow-face copper plate (2) of the adjacent crystallizer, enabling the horizontal distance between the upper opening of the narrow-face copper plate (2) of the crystallizer and the hanging cone line to be equal to the width set value of the upper opening of the crystallizer multiplied by 1/2-the width set value of the lower opening of the crystallizer multiplied by 1/2, and enabling the lower opening of the narrow-face copper plate (2) of the crystallizer to be tightly attached to the hanging cone line (1);
b. a micrometer clamping device (5) is held by hand, a connecting rod type internal micrometer (4) with the length being the same as the width of the lower opening of the crystallizer is placed into the lower opening of the crystallizer, the connecting rod type internal micrometer (4) is enabled to be tightly attached to the adjusted lower opening of the narrow-face copper plate (2) of the crystallizer, the position of the lower opening of the narrow-face copper plate (2) of the crystallizer on the other side of the crystallizer is adjusted at the same time, the lower opening of the narrow-face copper plate (2) of the crystallizer is enabled to be tightly attached to the connecting rod type internal micrometer (4), and even if the width of the lower opening of the crystallizer reaches a set value;
c. and (3) placing the hanging cone line (1) at the other side of the crystallizer, enabling the hanging cone line (1) to be tightly attached to the lower opening of the narrow-face copper plate (2) of the crystallizer, and adjusting the position of the upper opening of the narrow-face copper plate (2) of the crystallizer to enable the horizontal distance between the upper opening of the narrow-face copper plate (2) of the crystallizer and the hanging cone line (1) to be equal to the width set value of the upper opening of the crystallizer multiplied by 1/2-the width set value of the lower opening of the crystallizer multiplied by 1/2.
2. The method for adjusting the taper of a continuous casting mold according to claim 1, wherein: in the step a, the step b and the step c, when the position of the upper opening of the crystallizer is adjusted, firstly, the horizontal distance between the upper opening of the narrow-face copper plate (2) of the crystallizer and a hanging cone line (1) is smaller than the width set value x 1/2 of the upper opening of the crystallizer and the width set value x 1/2 of the lower opening of the crystallizer, and then the narrow-face copper plate (2) of the crystallizer is pulled towards the opposite direction of the central line; when the position of the lower opening of the narrow-face copper plate (2) of the crystallizer is adjusted, the lower opening of the narrow-face copper plate (2) of the crystallizer is required to be away from the hanging cone line (1), and then the narrow-face copper plate (2) of the crystallizer is pushed towards the direction of the central line to prevent the crystallizer from cone running.
3. The method for adjusting the conicity of a continuous casting mold according to claim 1 or 2, characterized in that: the straight rod (6) is a steel pipe with the diameter of 10-50 mm.
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| WO2018055038A1 (en) * | 2016-09-26 | 2018-03-29 | Primetals Technologies Austria GmbH | Controlling the narrow-side conicity of a continuous casting mould: method and device |
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| CN2098673U (en) * | 1991-09-14 | 1992-03-11 | 冶金工业部钢铁研究总院 | Taper detector |
| KR100627451B1 (en) * | 1998-12-30 | 2006-09-25 | 주식회사 포스코 | Device and method for setting the casting width and taper of mould narrow face of continuous casting machine |
| CN202126264U (en) * | 2011-07-11 | 2012-01-25 | 满国强 | Multifunctional line weight |
| CN102921912B (en) * | 2012-10-30 | 2014-10-08 | 鞍钢股份有限公司 | Method of controlling crystallizer tapering |
| CN204108258U (en) * | 2014-09-22 | 2015-01-21 | 新疆八一钢铁股份有限公司 | Plate slab crystallizer width of measuring device |
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| CN209792553U (en) * | 2019-03-12 | 2019-12-17 | 山东钢铁股份有限公司 | Simple equipment for checking size of wide surface of lower opening of slab crystallizer |
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| CN106270436A (en) * | 2016-09-20 | 2017-01-04 | 中冶连铸技术工程有限责任公司 | A kind of method improving the wide precision of crystallizer tune |
| WO2018055038A1 (en) * | 2016-09-26 | 2018-03-29 | Primetals Technologies Austria GmbH | Controlling the narrow-side conicity of a continuous casting mould: method and device |
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