CN110170522B - Method for optimizing hole pattern of phi 14mm steel bar specification - Google Patents
Method for optimizing hole pattern of phi 14mm steel bar specification Download PDFInfo
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- CN110170522B CN110170522B CN201910495263.7A CN201910495263A CN110170522B CN 110170522 B CN110170522 B CN 110170522B CN 201910495263 A CN201910495263 A CN 201910495263A CN 110170522 B CN110170522 B CN 110170522B
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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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
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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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
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Abstract
The invention relates to the technical field of production and processing of steel bars, and discloses a phi 14mm steel bar specification hole pattern optimization method, which comprises the following steps: 1) preparing; 2) rough machining; 3) performing intermediate processing; 4) and (6) finishing. According to the method for optimizing the hole pattern of the phi 14mm steel bar, through the steps, the existing eighteen rolling mills are improved into seventeen rolling mills, the requirement on energy is reduced, a large amount of energy is saved, the same roller diameter is adopted by the three rolling mills of the rough rolling mill group, the middle rolling mill group and the finishing rolling mill group respectively, the vibration of the steel bar in the rolling process is reduced conveniently, the stability of the steel bar in the rolling process is improved, the stress surface of the steel bar in the rolling process is more uniform conveniently by reducing the roller rotating speed in the rough rolling mill group, the middle rolling mill group and the finishing rolling mill group, the final quality of a product is ensured, the quality is prevented from fluctuating, and the purposes of good stability, excellent finished product quality and energy conservation are achieved.
Description
Technical Field
The invention relates to the technical field of production and processing of steel bars, in particular to a method for optimizing a hole pattern with the specification of phi 14mm steel bars.
Background
The steel bar (Rebar) is steel for reinforced concrete and prestressed reinforced concrete, the cross section of the steel bar is round, sometimes square with round corners, and comprises plain round steel bars, ribbed steel bars and twisted steel bars, the steel bar for reinforced concrete is straight bar or wire rod-shaped steel for reinforced concrete, the external form of the steel bar is plain round steel bars and deformed steel bars, the delivery state is straight bar and wire rod, the plain round steel bars are small round steel and wire rod of common low-carbon steel, the deformed steel bars are steel bars with ribs on the surface, and are usually provided with 2 longitudinal ribs and transverse ribs uniformly distributed along the length direction, the external form of the transverse ribs is 3 types of spiral shape, herringbone shape and crescent shape, the nominal diameter is expressed by millimeter number of the nominal diameter, the nominal diameter of the deformed steel bars is equivalent to the nominal diameter of the plain steel bars with equal cross section, the steel bar mainly bears tensile stress in the concrete, and the deformed steel bar is under the action of the ribs, it has great binding capacity to concrete, so that it can bear outer force well, and the steel bar is used widely in various building structures, especially large, heavy, light and thin wall and high rise building structures.
The pass is a pass formed by the rolling grooves of two or more rollers or the pair of the rolling groove of one roller and the boss of the other roller on the rolling surface, and the rolling mill with the pass can roll steel products of complicated section profiles, such as I-shaped steel, H-shaped steel, angle steel and the like, however, in the process of producing the pass of the steel bar with the 14mm diameter, the stability is poor, the quality of finished products is general, eighteen rolling mills are required to work at the same time, and a large amount of energy is consumed, so that the pass optimization method for the steel bar with the 14mm diameter is provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the phi 14mm steel bar specification hole type optimization method which has the advantages of good stability, excellent finished product quality, energy conservation and the like, and solves the problems that the stability is poor, the finished product quality is general, eighteen rolling mills are required to work at the same time, and a large amount of energy is consumed.
(II) technical scheme
The invention provides a method for optimizing the hole pattern of a phi 14mm steel bar specification, which comprises the following steps:
1) preparing seventeen rolling mills, dividing the seventeen rolling mills into a rough rolling mill group, a middle rolling mill group and a finish rolling mill group, wherein the first to fourth rolling mills are the rough rolling mill group, the fifth to eleventh rolling mills are the middle rolling mill group, the twelfth to seventeen rolling mills are the finish rolling mill group, and the first to seventeen rolling mills are sequentially opened so that the steel bars can sequentially enter the seventeen rolling mills;
2) rough machining, namely putting the square blank into a first rolling mill, and sequentially passing through the first rolling mill to a fourth rolling mill, wherein the diameter of a roller, the diameter of a working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of a motor of the first rolling mill are 610mm, 0.38m/s, 11.9rpm and 639.5rpm, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the second rolling mill are 610mm, 0.5m/s, 15.5rpm and 674.1rpm, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the third rolling mill are 610mm, 0.66m/s, 20.7rpm and 685.2rpm, and the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the fourth rolling mill are 610 mm;
3) the rough-processed blank is led into a fifth rolling mill and passes through the fifth rolling mill to an eleventh rolling mill in sequence, wherein the diameter of a roller, the diameter of a working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of a motor of the fifth rolling mill are 480mm, 1.13m/s, 44.8rpm and 642.6rpm in sequence, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the sixth rolling mill are 480mm, 1.42m/s, 56.3rpm and 620.4rpm in sequence, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the seventh rolling mill are 480mm, 479.0mm, 1.77m/s, 70.5rpm and 609.4rpm in sequence, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the eighth rolling mill are 480mm, 47, The diameter of a working roll, the speed of the working roll, the rotating speed of the working roll and the rotating speed of a motor are 480mm, 478.5mm, 2.63m/s, 105.1rpm and 586.4rpm in sequence, the diameter of the roll of a No. ten rolling mill, the diameter of the working roll, the speed of the working roll, the rotating speed of the roll and the rotating speed of the motor are 480mm, 453.4mm, 3.64m/s, 153.3rpm and 689.7rpm in sequence, and the diameter of the roll of a No. eleven rolling mill, the diameter of the working roll, the speed of the roll, the rotating speed of the roll and the rotating speed of the motor are 480mm, 478mm, 3.42m/s, 36;
4) finish machining, guiding the blank after the middle processing into a No. twelve rolling mill, and sequentially passing through the No. twelve rolling mill to a No. seventeen rolling mill, wherein the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. twelve rolling mill are 380mm, 378.5mm, 4.84m/s, 244.0rpm and 500.1rpm in sequence, the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. thirteen rolling mill are 380mm, 325.0mm, 6.51m/s, 382.6rpm and 681.0rpm in sequence, the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. fourteen rolling mill are 380mm, 368.6mm, 8.47m/s, 438.7rpm and 680.0rpm in sequence, the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. fifteen rolling mill are 380mm, 368.9mm, 9.64m/s, 499.0rpm, 683.7rpm and sixteen rolling mill in sequence, The diameter of the working roll, the speed of the working roll and the speed of the motor are 380mm, 375.2mm, 11.14m/s, 566.8rpm and 685.9rpm in sequence, and the diameter of the roll, the diameter of the working roll, the speed of the working roll and the speed of the motor of a seventeen rolling mill are 380mm, 370.8mm, 14.00m/s, 721.1rpm and 778.8rpm in sequence.
(III) advantageous effects
Compared with the prior art, the invention provides a phi 14mm steel bar specification hole type optimization method, which has the following beneficial effects:
according to the method for optimizing the hole pattern of the phi 14mm steel bar, through the steps, the existing eighteen rolling mills are improved into seventeen rolling mills, the requirement on energy is reduced, a large amount of energy is saved, the same roller diameter is adopted by the three rolling mills of the rough rolling mill group, the middle rolling mill group and the finishing rolling mill group respectively, the vibration of the steel bar in the rolling process is reduced conveniently, the stability of the steel bar in the rolling process is improved, the stress surface of the steel bar in the rolling process is more uniform conveniently by reducing the roller rotating speed in the rough rolling mill group, the middle rolling mill group and the finishing rolling mill group, the final quality of a product is ensured, the quality is prevented from fluctuating, and the purposes of good stability, excellent finished product quality and energy conservation are achieved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a method for controlling the content of mud blocks in preparation of expanded slag ceramsite, which comprises the following steps:
1) preparing seventeen rolling mills, dividing the seventeen rolling mills into a rough rolling mill group, a middle rolling mill group and a finish rolling mill group, wherein the first to fourth rolling mills are the rough rolling mill group, the fifth to eleventh rolling mills are the middle rolling mill group, the twelfth to seventeen rolling mills are the finish rolling mill group, and the first to seventeen rolling mills are sequentially opened so that the steel bars can sequentially enter the seventeen rolling mills;
2) rough machining, namely putting the square blank into a first rolling mill, and sequentially passing through the first rolling mill to a fourth rolling mill, wherein the diameter of a roller, the diameter of a working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of a motor of the first rolling mill are 610mm, 0.38m/s, 11.9rpm and 639.5rpm, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the second rolling mill are 610mm, 0.5m/s, 15.5rpm and 674.1rpm, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the third rolling mill are 610mm, 0.66m/s, 20.7rpm and 685.2rpm, and the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the fourth rolling mill are 610 mm;
3) the rough-processed blank is led into a fifth rolling mill and passes through the fifth rolling mill to an eleventh rolling mill in sequence, wherein the diameter of a roller, the diameter of a working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of a motor of the fifth rolling mill are 480mm, 1.13m/s, 44.8rpm and 642.6rpm in sequence, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the sixth rolling mill are 480mm, 1.42m/s, 56.3rpm and 620.4rpm in sequence, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the seventh rolling mill are 480mm, 479.0mm, 1.77m/s, 70.5rpm and 609.4rpm in sequence, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the eighth rolling mill are 480mm, 47, The diameter of a working roll, the speed of the working roll, the rotating speed of the working roll and the rotating speed of a motor are 480mm, 478.5mm, 2.63m/s, 105.1rpm and 586.4rpm in sequence, the diameter of the roll of a No. ten rolling mill, the diameter of the working roll, the speed of the working roll, the rotating speed of the roll and the rotating speed of the motor are 480mm, 453.4mm, 3.64m/s, 153.3rpm and 689.7rpm in sequence, and the diameter of the roll of a No. eleven rolling mill, the diameter of the working roll, the speed of the roll, the rotating speed of the roll and the rotating speed of the motor are 480mm, 478mm, 3.42m/s, 36;
4) finish machining, guiding the blank after the middle processing into a No. twelve rolling mill, and sequentially passing through the No. twelve rolling mill to a No. seventeen rolling mill, wherein the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. twelve rolling mill are 380mm, 378.5mm, 4.84m/s, 244.0rpm and 500.1rpm in sequence, the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. thirteen rolling mill are 380mm, 325.0mm, 6.51m/s, 382.6rpm and 681.0rpm in sequence, the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. fourteen rolling mill are 380mm, 368.6mm, 8.47m/s, 438.7rpm and 680.0rpm in sequence, the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. fifteen rolling mill are 380mm, 368.9mm, 9.64m/s, 499.0rpm, 683.7rpm and sixteen rolling mill in sequence, The diameter of the working roll, the speed of the working roll and the speed of the motor are 380mm, 375.2mm, 11.14m/s, 566.8rpm and 685.9rpm in sequence, and the diameter of the roll, the diameter of the working roll, the speed of the working roll and the speed of the motor of a seventeen rolling mill are 380mm, 370.8mm, 14.00m/s, 721.1rpm and 778.8rpm in sequence.
Table one is a prior art data table:
table two is a data diagram of the present invention:
the invention has the beneficial effects that: through the steps, the existing eighteen rolling mills are improved into seventeen rolling mills, the requirement on energy is reduced, and therefore a large amount of energy is saved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A phi 14mm steel bar specification hole type optimization method is characterized by comprising the following steps:
1) preparing seventeen rolling mills, dividing the seventeen rolling mills into a rough rolling mill group, a middle rolling mill group and a finish rolling mill group, wherein the first to fourth rolling mills are the rough rolling mill group, the fifth to eleventh rolling mills are the middle rolling mill group, the twelfth to seventeen rolling mills are the finish rolling mill group, and the first to seventeen rolling mills are sequentially opened so that the steel bars can sequentially enter the seventeen rolling mills;
2) rough machining, namely putting the square blank into a first rolling mill, and sequentially passing through the first rolling mill to a fourth rolling mill, wherein the diameter of a roller, the diameter of a working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of a motor of the first rolling mill are 610mm, 0.38m/s, 11.9rpm and 639.5rpm, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the second rolling mill are 610mm, 0.5m/s, 15.5rpm and 674.1rpm, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the third rolling mill are 610mm, 0.66m/s, 20.7rpm and 685.2rpm, and the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the fourth rolling mill are 610 mm;
3) the rough-processed blank is led into a fifth rolling mill and passes through the fifth rolling mill to an eleventh rolling mill in sequence, wherein the diameter of a roller, the diameter of a working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of a motor of the fifth rolling mill are 480mm, 1.13m/s, 44.8rpm and 642.6rpm in sequence, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the sixth rolling mill are 480mm, 1.42m/s, 56.3rpm and 620.4rpm in sequence, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the seventh rolling mill are 480mm, 479.0mm, 1.77m/s, 70.5rpm and 609.4rpm in sequence, the diameter of the roller, the diameter of the working roller, the speed of the roller, the rotating speed of the roller and the rotating speed of the motor of the eighth rolling mill are 480mm, 47, The diameter of a working roll, the speed of the working roll, the rotating speed of the working roll and the rotating speed of a motor are 480mm, 478.5mm, 2.63m/s, 105.1rpm and 586.4rpm in sequence, the diameter of the roll of a No. ten rolling mill, the diameter of the working roll, the speed of the working roll, the rotating speed of the roll and the rotating speed of the motor are 480mm, 453.4mm, 3.64m/s, 153.3rpm and 689.7rpm in sequence, and the diameter of the roll of a No. eleven rolling mill, the diameter of the working roll, the speed of the roll, the rotating speed of the roll and the rotating speed of the motor are 480mm, 478mm, 3.42m/s, 36;
4) finish machining, guiding the blank after the middle processing into a No. twelve rolling mill, and sequentially passing through the No. twelve rolling mill to a No. seventeen rolling mill, wherein the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. twelve rolling mill are 380mm, 378.5mm, 4.84m/s, 244.0rpm and 500.1rpm in sequence, the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. thirteen rolling mill are 380mm, 325.0mm, 6.51m/s, 382.6rpm and 681.0rpm in sequence, the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. fourteen rolling mill are 380mm, 368.6mm, 8.47m/s, 438.7rpm and 680.0rpm in sequence, the roll diameter, the working roll diameter, the roll speed, the roll rotating speed and the motor rotating speed of the No. fifteen rolling mill are 380mm, 368.9mm, 9.64m/s, 499.0rpm, 683.7rpm and sixteen rolling mill in sequence, The diameter of the working roll, the speed of the working roll and the speed of the motor are 380mm, 375.2mm, 11.14m/s, 566.8rpm and 685.9rpm in sequence, and the diameter of the roll, the diameter of the working roll, the speed of the working roll and the speed of the motor of a seventeen rolling mill are 380mm, 370.8mm, 14.00m/s, 721.1rpm and 778.8rpm in sequence.
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| CN201910495263.7A CN110170522B (en) | 2019-06-10 | 2019-06-10 | Method for optimizing hole pattern of phi 14mm steel bar specification |
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| CN201910495263.7A CN110170522B (en) | 2019-06-10 | 2019-06-10 | Method for optimizing hole pattern of phi 14mm steel bar specification |
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| CN110170522B true CN110170522B (en) | 2020-12-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU1966276A (en) * | 1975-11-14 | 1978-05-25 | Copeland W R | Machine for continuously cold working steel bar |
| CN1994599A (en) * | 2006-01-06 | 2007-07-11 | 水城钢铁（集团）有限责任公司 | Three-strand splitting rolling method for ribbed steel bar |
| CN101007315B (en) * | 2007-01-18 | 2010-10-06 | 湖南华菱涟源钢铁有限公司 | Slotless rolling process of full horizontal rolling mill |
| CN101920271B (en) * | 2010-07-27 | 2012-02-15 | 福建三宝特钢有限公司 | Controlled rolling and controlled cooling production process of HRB400 (Hot-rolled Ribbed-steel Bar 400) steel bar |
| CN102357537A (en) * | 2011-11-02 | 2012-02-22 | 承德建龙特殊钢有限公司 | Rolling method capable of improving macroscopic defects of metal bar |
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