CN112916613A - Finish rolling method and device for hot rolling manufacturing of deformed steel bar - Google Patents
Finish rolling method and device for hot rolling manufacturing of deformed steel bar Download PDFInfo
- Publication number
- CN112916613A CN112916613A CN202011577539.5A CN202011577539A CN112916613A CN 112916613 A CN112916613 A CN 112916613A CN 202011577539 A CN202011577539 A CN 202011577539A CN 112916613 A CN112916613 A CN 112916613A
- Authority
- CN
- China
- Prior art keywords
- rolling
- steel bar
- deformed steel
- cylinder
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a finish machining method for hot rolling, manufacturing and rolling of deformed steel bars, which comprises the following steps: introducing the round steel bar into a stepping heating furnace for heating; the heated round steel bar is fed into the shell at a low speed and sequentially subjected to rough rolling, medium rolling, primary finish rolling and secondary finish rolling; starting the first air blower and the second air blower, adjusting the proportion of the mixed gas through the first proportional valve and the second proportional valve, proportioning the mixed gas into gases with different temperatures, and then spraying the gases from the inclined gas outlet; starting to increase the processing speed, and finishing finish machining of the round steel bar by sequentially carrying out primary cooling, rough rolling, secondary cooling, intermediate rolling, tertiary cooling, primary finish rolling, quartic cooling and secondary finish rolling; according to the invention, the front parts of the rough rolling, the middle rolling and the finish rolling are cooled once by blowing, so that the overall length of the process line body is shortened, the processing efficiency is improved, the temperature shock cannot be caused, and the processing quality of the deformed steel bar cannot be influenced.
Description
Technical Field
The invention relates to the technical field of deformed steel bar machining, in particular to a method for finish rolling of hot rolling manufacture of deformed steel bars, and particularly relates to a device for finish rolling manufacture of hot rolling manufacture of deformed steel bars.
Background
Deformed steel bar is also called hot rolled ribbed bar. Raised lines on the surface of the deformed steel bar are called transverse ribs, the transverse ribs are spiral, herringbone and crescent in common use, and the crescent is commonly used in construction sites.
The deformed steel bar is generally provided with two longitudinal ribs and transverse ribs which are uniformly distributed along the length direction, and the two longitudinal ribs and the transverse ribs are mainly used for enhancing the adhesion performance of the steel bar and the concrete, so that the steel bar and the concrete can be better and more harmoniously matched to bear external force together, and a house becomes firmer and firmer; then the compressive strength and the resistance of the bending building are better, and the steel bar with the ribs can also effectively resist disasters such as earthquake, and the like, and is widely used for various building structures, particularly large, heavy, light thin-wall and high-rise building structures.
The deformed steel bar is generally manufactured by hot rolling, and is processed by heating, rough rolling, intermediate rolling, finish rolling, cooling and cutting in sequence; in the processing process, the rough rolling processing, the intermediate rolling processing and the finish rolling processing need to be carried out at different temperatures, and the distances among the rough rolling processing, the intermediate rolling processing and the finish rolling processing are generally enlarged, so that a transmission interval for cooling is reserved; however, the equipment line body of the whole production process is long, the occupied space is large, and the production efficiency is reduced. Therefore, a finish rolling method and a finish rolling device for hot rolling manufacture of deformed steel bars are provided.
Disclosure of Invention
The invention aims at the defects and provides a finish rolling method and a finish rolling device for hot rolling manufacture of deformed steel bars, wherein the front parts of rough rolling, middle rolling and finish rolling are cooled once by blowing, so that the overall length of a process line body is shortened, the machining efficiency is improved, temperature shock cannot be caused, and the machining quality of the deformed steel bars cannot be influenced; when the cooling is carried out, the adopted method is that the heat emitted during the processing of the deformed steel bar in the shell is matched with the outside air in a proper proportion, then high-speed sprayed gas in different temperature ranges is formed, the cooling can be carried out on different cooling gases required by rough rolling processing, medium rolling processing and finish rolling processing, the energy is saved, and the cooling temperature is easily controlled to solve the problems.
The technical scheme of the invention is realized as follows:
a hot rolling manufacturing rolling finish machining method for deformed steel bars comprises the following steps:
s1, heating treatment: introducing the round steel bar into a stepping heating furnace for heating;
s2, low-speed trial machining: the round steel bar heated in the S1 mode is conveyed into the shell at a low speed and sequentially subjected to rough rolling, medium rolling, primary finish rolling and secondary finish rolling, and the temperature of the round steel bar is dissipated into the shell, so that the temperature in the shell is increased;
s3, starting a cooling mechanism: after the step S2 is completed, starting the first air blower and the second air blower, adjusting the proportion of the mixed gas through the first proportional valve and the second proportional valve to prepare gases with different temperatures, then spraying the gases from the inclined air outlet holes, and cooling the surface of the round steel bar;
s4, speeding up processing: after S3 is finished, the machining speed is increased, the round steel bar is subjected to primary cooling, rough rolling, secondary cooling, intermediate rolling, tertiary cooling, primary finish rolling, quartic cooling and secondary finish rolling in sequence, and finish machining is finished to obtain deformed steel bar;
s5, natural cooling by adopting a cooling bed: placing the finish-machined deformed steel bar on a stepping cooling bed for natural cooling;
s6, sizing and cutting: cutting the deformed steel bar after natural cooling by a cold shearing machine in a fixed length;
s7, bundling: and bundling the cut deformed steel bars by using a bundling machine, and warehousing after finishing.
Preferably, in S2, when the internal temperature of the case increases to the highest equilibrium point, the S2 step is completed.
The invention also provides a finish rolling device for the hot rolling of the deformed steel bar, which comprises:
a gear box is fixedly connected with one end of the upper part of the base, a shell is fixedly connected with the other end of the upper part of the base, a transmission shaft connected with a rough rolling assembly, a middle rolling assembly and a finish rolling assembly in the shell extends out of one side of the gear box, a heat dissipation cylinder is installed on the transmission shaft,
the upper part of one side of the shell is fixedly connected with a supporting plate, the upper part of the supporting plate is fixedly provided with a first air blower, a second air blower, a first pressure stabilizing cylinder and a second pressure stabilizing cylinder, the inlet of the first air blower is connected with a first air inlet pipe, one end of the first air inlet pipe is communicated with one side of the shell, the outlet of the first air blower is communicated with the inside of the first pressure stabilizing cylinder through a pipeline, the inlet of the second air blower is connected with a second air inlet pipe, and the outlet of the second air blower is communicated with the inside of the second pressure stabilizing cylinder through a pipeline;
the device comprises a shell, a vent pipe, a mixing cylinder, a three-way pipe, a first proportional valve, a second proportional valve, a third proportional valve and a third proportional valve, wherein the vent pipe is horizontally arranged above the shell, the lower part of the vent pipe is communicated with the vertical pipe, the lower end of the vertical pipe penetrates through the shell in a sealing manner and extends into the shell, one end of the vent pipe is communicated with the mixing cylinder, the upper end of the mixing cylinder is provided with an air inlet, the upper end of the air inlet is communicated with the three-way pipe, one inlet of the three-way pipe is communicated with the interior of the second pressure stabilizing cylinder through the first air pipe, the first proportional valve is arranged on the first air pipe, the other inlet of the three-way pipe is communicated;
the lower end of the vertical pipe is communicated with an outer sleeve, a first sleeve ring and a second sleeve ring are rotatably mounted at two ends of the inner part of the outer sleeve respectively through sealing bearings, an inclined air outlet hole is formed in the end face of the second sleeve ring, inner sleeve sleeves are fixedly connected inside the first sleeve ring and the second sleeve ring, and the inner sleeve sleeves the outer sides of the deformed steel bars;
a driving motor is fixedly installed on the outer side of one end of the gear box, a driving gear, a driven gear and an intermediate gear are installed inside the gear box, the driven gear and the intermediate gear are respectively meshed with the driving gear, transmission shafts are installed inside the driving gear and the driven gear, the driving gear and the driven gear are arranged in an up-and-down alignment mode, and the driving motor is in transmission connection with the driving gear;
the heat dissipation cylinder is rotatably installed on the transmission shaft through a high-temperature-resistant supporting bearing, the transmission shaft is located stirring blades are fixedly connected to the inner surface of the heat dissipation cylinder, and copper powder is contained in the heat dissipation cylinder.
Preferably, the mixing drum is fixedly connected with two layers of clapboards inside, and the two layers of clapboards are provided with inclined holes with different inclination angles.
Preferably, the shell is a stainless steel shell, and openings convenient for the steel bars to enter and exit are formed in the two ends of the shell.
Preferably, the heat dissipation cylinder is a hard copper open cylinder, the copper powder inside the heat dissipation cylinder covers a height 2-3cm higher than the upper part of the transmission shaft, and a counterweight lead block is fixedly connected to the center of the bottom of the heat dissipation cylinder.
Preferably, the first air pipe and the second air pipe are both high-temperature-resistant air pipes, and the first blower is a hot air blower.
Preferably, the driving motor is a speed reduction motor, and the driving gear, the intermediate gear and the driven gear have the same diameter and teeth.
Preferably, the oblique air outlet holes are provided with three groups, the three groups of oblique air outlet holes are uniformly distributed on the surface of the second sleeve ring in an annular mode, and the reverse acting force generated when the three groups of oblique air outlet holes discharge air can drive the second sleeve ring to rotate.
Preferably, the first pressure stabilizing cylinder and the second pressure stabilizing cylinder are both provided with a barometer for detecting the air pressure inside the cylinder body and a thermometer for detecting the temperature inside the cylinder body.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the invention, the front parts of the rough rolling processing, the middle rolling processing and the finish rolling processing are cooled once through air blowing, so that the overall length of a process line body is shortened, the processing efficiency is improved, the temperature shock cannot be caused, and the processing quality of the deformed steel bar cannot be influenced;
2. according to the invention, during cooling, the heat emitted during the processing of the deformed steel bar in the shell is matched with the external air in a proper proportion, and then high-speed sprayed gas in different temperature ranges is formed, so that different cooling gases required by rough rolling, medium rolling and finish rolling can be cooled, energy is saved, and the cooling temperature is easy to control;
3. according to the invention, the heat dissipation cylinder is arranged on the transmission shaft, copper powder is utilized to contact with the surface of the transmission shaft, heat is quickly transferred away, the length of the transmission shaft is shortened, the heat on the transmission shaft is not transferred to the gear box, and the gear box and the driving motor are prevented from being damaged by high temperature.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of a method of hot rolling manufacturing rolling finishing of deformed steel bars according to an embodiment of the present invention;
FIG. 2 is a schematic partial structural view of a finished deformed steel bar according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a deformed steel bar hot rolling manufacturing rolling finishing apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of first and second proportional valves of a deformed steel bar hot rolling manufacturing rolling finishing device according to an embodiment of the present invention;
FIG. 5 is a schematic view of the internal structure of a mixing drum of the deformed steel bar hot rolling manufacturing rolling finishing apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic view of the internal structure of an outer sleeve of a deformed steel bar hot rolling manufacturing rolling finishing apparatus according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a heat-dissipating cylinder of a deformed steel bar hot rolling manufacturing rolling finishing device according to an embodiment of the present invention;
FIG. 8 is a schematic view of the internal structure of a gearbox of a hot rolled manufacturing rolling finishing device for deformed steel bars according to an embodiment of the present invention.
In the figure:
1. deformed steel bar; 101. a boss portion; 2. a base; 3. a gear case; 301. a drive motor; 302. a drive shaft; 303. a driving gear; 304. an intermediate gear; 305. a driven gear; 4. a heat-dissipating cylinder; 401. a counterweight lead block; 402. a support bearing; 403. a stirring blade; 404. copper powder; 5. a housing; 501. a port; 502. a support plate; 503. a first blower; 504. a first air inlet pipe; 505. a second blower; 506. a second air inlet pipe; 507. a first pressure stabilizing cylinder; 508. a mixing drum; 5081. a partition plate; 5082. an inclined hole; 509. an air inlet; 510. a vent pipe; 511. a second pressure stabilizing cylinder; 512. a three-way pipe; 513. a first air pipe; 514. a first proportional valve; 515. a second air pipe; 516. a second proportional valve; 517. a vertical tube; 518. an outer sleeve; 519. sealing the bearing; 520. a first collar; 521. a second collar; 522. obliquely discharging air holes; 523. an inner sleeve.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
The invention is further described with reference to the following figures and specific examples.
Example 1
As shown in fig. 1, a hot rolling manufacturing rolling finishing method for deformed steel bars according to an embodiment of the present invention includes the steps of:
s1, heating treatment: introducing the round steel bar into a stepping heating furnace for heating;
s2, low-speed trial machining: the round steel bar heated by S1 is fed into the shell 5 at a low speed and is subjected to rough rolling, intermediate rolling, primary finish rolling and secondary finish rolling in sequence, and the temperature of the round steel bar is dissipated into the shell 5, so that the temperature inside the shell 5 is increased;
s3, starting a cooling mechanism: after the step S2 is completed, the first blower 503 and the second blower 505 are started, the mixture ratio of the mixed gas is adjusted through the first proportional valve 514 and the second proportional valve 516, the mixed gas is mixed into gas with different temperatures, and then the gas is sprayed out from the inclined air outlet 522, so as to perform cooling treatment on the surface of the round steel bar;
s4, speeding up processing: after S3 is finished, the machining speed is increased, the round steel bar is subjected to primary cooling, rough rolling, secondary cooling, intermediate rolling, tertiary cooling, primary finish rolling, quartic cooling and secondary finish rolling in sequence, finish machining is finished, and the deformed steel bar 1 is manufactured, and at the moment, the deformed steel bar 1 is machined by the convex part 101 (shown in figure 2);
s5, natural cooling by adopting a cooling bed: placing the finish-machined deformed steel bar 1 on a stepping cooling bed for natural cooling;
s6, sizing and cutting: cutting the deformed steel bar 1 after natural cooling by a cold shearing machine in a fixed length;
s7, bundling: and bundling the cut deformed steel bar 1 by a bundling machine, and warehousing after finishing.
Specifically, in S2, when the internal temperature of the case 5 increases to the highest equilibrium point, the step S2 is completed.
By adopting the technical scheme, after the temperature is balanced, the first and second proportional valves can be conveniently adjusted according to the balanced temperature.
As shown in fig. 3 to 8, a deformed steel bar hot rolling manufacturing rolling finishing apparatus according to an embodiment of the present invention includes:
a gear box 3 is fixedly connected with one end of the upper part of the base 2, a shell 5 is fixedly connected with the other end of the upper part of the base 2, a transmission shaft 302 connected with a rough rolling assembly, a middle rolling assembly and a finish rolling assembly inside the shell 5 extends out of one side of the gear box 3, a heat radiation cylinder 4 is installed on the transmission shaft 302,
a supporting plate 502 is fixedly connected to the upper portion of one side of the housing 5, a first air blower 503, a second air blower 505, a first pressure stabilizing cylinder 507 and a second pressure stabilizing cylinder 511 are fixedly mounted on the upper portion of the supporting plate 502, an inlet of the first air blower 503 is connected with a first air inlet pipe 504, one end of the first air inlet pipe 504 is communicated with one side of the housing 5, an outlet of the first air blower 503 is communicated with the inside of the first pressure stabilizing cylinder 507 through a pipeline, an inlet of the second air blower 505 is connected with a second air inlet pipe 506, and an outlet of the second air blower 505 is communicated with the inside of the second pressure stabilizing cylinder 511 through a pipeline;
the ventilation pipe 510 is horizontally arranged above the shell 5, the lower part of the ventilation pipe 510 is communicated with a vertical pipe 517, the lower end of the vertical pipe 517 is hermetically penetrated through the shell 5 and extends to the inside of the shell 5, one end of the ventilation pipe 510 is communicated with a mixing drum 508, the upper end of the mixing drum 508 is provided with an air inlet 509, the upper end of the air inlet 509 is communicated with a three-way pipe 512, one inlet of the three-way pipe 512 is communicated with the inside of the second pressure-stabilizing cylinder 511 through a first air pipe 513, a first proportional valve 514 is arranged on the first air pipe 513, the other inlet of the three-way pipe 512 is communicated with the inside of the first pressure-stabilizing cylinder 507 through a second air pipe 515, and a second proportional valve 516 is arranged on the second air pipe 515;
the lower end of the vertical pipe 517 is communicated with an outer sleeve 518, two ends of the inner part of the outer sleeve 518 are rotatably provided with a first sleeve ring 520 and a second sleeve ring 521 through a sealed bearing 519 respectively, the end surface of the second sleeve ring 521 is provided with an inclined air outlet 522, the inner parts of the first sleeve ring 520 and the second sleeve ring 521 are fixedly connected with an inner sleeve 523, and the inner sleeve 523 is sleeved on the outer side of the deformed steel bar 1;
a driving motor 301 is fixedly installed on the outer side of one end of the gear box 3, a driving gear 303, a driven gear 305 and an intermediate gear 304 which are respectively meshed with the driving gear 303 are installed inside the gear box 3, transmission shafts 302 are installed inside the driving gear 303 and the driven gear 305, the driving gear 303 and the driven gear 305 are vertically aligned, and the driving motor 301 is in transmission connection with the driving gear 303;
the heat dissipation cylinder 4 is rotatably mounted on the transmission shaft 302 through a high-temperature-resistant support bearing 402, the transmission shaft 302 is located on the inner surface of the heat dissipation cylinder 4 and is fixedly connected with a stirring blade 403, and copper powder 404 is contained in the heat dissipation cylinder 4.
By adopting the technical scheme, the copper powder 404 is turned over when the transmission shaft 302 rotates through the stirring blades 403, so that the heat dissipation effect is improved.
The inside fixedly connected with two-layer baffle 5081 of mixing drum 508, and all set up the different inclined hole 5082 of inclination on the two-layer baffle 5081.
By adopting the technical scheme, the hot air and the cold air are intersected and flow through the inclined holes 5082, and the mixing uniformity is improved.
The heat dissipation cylinder 4 is set to be a hard copper open cylinder body, the copper powder 404 in the heat dissipation cylinder 4 covers the height which is 2-3cm higher than the upper part of the transmission shaft 302, and the center of the bottom of the heat dissipation cylinder 4 is fixedly connected with a counterweight lead block 401.
Through adopting above-mentioned technical scheme, cool down through the inside copper powder 404 of heat dissipation cylinder 4, avoid using water, waste water resource, and the radiating effect of copper is better.
The first air pipe 513 and the second air pipe 515 are both configured as high temperature resistant air pipes, and the first blower 503 is configured as a hot air blower.
Through adopting above-mentioned technical scheme, because the inside gas temperature of casing 5 is higher, first air-blower 503 sets up to high temperature resistant hot gas air-blower and just can work for a long time.
The driving motor 301 is a speed reducing motor, and the driving gear 303, the intermediate gear 304 and the driven gear 305 have the same diameter and teeth.
By adopting the technical scheme, the diameters and the tooth numbers are the same, so that the plurality of transmission shafts 302 can move at the same rotating speed.
The inclined air outlet holes 522 are provided with three groups, the three groups of inclined air outlet holes 522 are uniformly arranged on the surface of the second sleeve 521 in an annular mode, and the reverse acting force generated when the three groups of inclined air outlet holes 522 are exhausted can drive the second sleeve 521 to rotate.
Through adopting above-mentioned technical scheme, make second lantern ring 521 rotate under the reaction force and jet out the air through three groups of oblique air outlet 522, can play the effect of even cooling.
And a barometer for detecting the air pressure inside the cylinder body and a thermometer for detecting the temperature inside the cylinder body are respectively arranged on the first pressure stabilizing cylinder 507 and the second pressure stabilizing cylinder 511.
By adopting the technical scheme, the internal temperature and air pressure conditions of the first pressure stabilizing cylinder 507 and the second pressure stabilizing cylinder 511 can be detected in real time by utilizing the air pressure meter and the thermometer; and then the first proportional valve and the second proportional valve are adjusted to proper opening and closing positions according to the temperature and air pressure conditions.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In practical application, the invention reduces the temperature once by blowing air at the front parts of rough rolling, middle rolling and finish rolling, shortens the whole length of the process line body, improves the processing efficiency, does not cause temperature shock, and does not influence the processing quality of the deformed steel bar 1; during cooling, the heat emitted during processing of the deformed steel bar 1 in the shell 5 is matched with the external air in a proper proportion, and then high-speed sprayed gas in different temperature ranges is formed, so that different cooling gases required by rough rolling, medium rolling and finish rolling can be cooled, energy is saved, and the cooling temperature is easy to control; according to the invention, the heat dissipation cylinder 4 is arranged on the transmission shaft 302, the copper powder 404 is in contact with the surface of the transmission shaft 302, heat is quickly transferred away, the length of the transmission shaft 302 is shortened, the heat on the transmission shaft 302 is not transferred to the gear box 3, and the gear box 3 and the driving motor 301 are prevented from being damaged by high temperature.
The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.
Claims (10)
1. A hot rolling manufacturing rolling finish machining method for deformed steel bars is characterized by comprising the following steps:
s1, heating treatment: introducing the round steel bar into a stepping heating furnace for heating;
s2, low-speed trial machining: the round steel bar heated by the S1 is fed into the shell (5) at a low speed and is subjected to rough rolling, intermediate rolling, primary finish rolling and secondary finish rolling in sequence, and the temperature of the round steel bar is dissipated into the shell (5), so that the temperature in the shell (5) is increased;
s3, starting a cooling mechanism: after the step S2 is completed, starting a first air blower (503) and a second air blower (505), adjusting the proportion of the mixed gas through a first proportional valve (514) and a second proportional valve (516), proportioning the mixed gas into gases with different temperatures, then spraying the gases from an inclined air outlet (522), and cooling the surface of the round steel bar;
s4, speeding up processing: after S3 is finished, the machining speed is increased, the round steel bar is subjected to primary cooling, rough rolling, secondary cooling, intermediate rolling, tertiary cooling, primary finish rolling, quartic cooling and secondary finish rolling in sequence, and finish machining is finished to obtain deformed steel bar (1);
s5, natural cooling by adopting a cooling bed: placing the finish-machined deformed steel bar (1) on a stepping cooling bed for natural cooling;
s6, sizing and cutting: the deformed steel bar (1) after natural cooling is cut in fixed length by a cold shearing machine;
s7, bundling: and bundling the tailored deformed steel bar (1) by a bundling machine, and warehousing after finishing.
2. A hot-rolling manufacturing-rolling finishing method of deformed steel bars according to claim 1, characterized in that, in S2, when the internal temperature of the shell (5) increases to the highest equilibrium point, the step S2 is completed.
3. A deformed steel bar hot rolling finishing apparatus that realizes a deformed steel bar hot rolling finishing method according to any one of claims 1 to 2, comprising:
the device comprises a base (2), one end of the upper part of the base (2) is fixedly connected with a gear box (3), the other end of the upper part of the base (2) is fixedly connected with a shell (5), a transmission shaft (302) connected with a rough rolling assembly, a middle rolling assembly and a finish rolling assembly in the shell (5) extends out of one side of the gear box (3), a heat radiation cylinder (4) is installed on the transmission shaft (302),
a supporting plate (502) is fixedly connected to the upper portion of one side of the shell (5), a first air blower (503), a second air blower (505), a first pressure stabilizing cylinder (507) and a second pressure stabilizing cylinder (511) are fixedly mounted on the upper portion of the supporting plate (502), an inlet of the first air blower (503) is connected with a first air inlet pipe (504), one end of the first air inlet pipe (504) is communicated with one side of the shell (5), an outlet of the first air blower (503) is communicated with the inside of the first pressure stabilizing cylinder (507) through a pipeline, an inlet of the second air blower (505) is connected with a second air inlet pipe (506), and an outlet of the second air blower (505) is communicated with the inside of the second pressure stabilizing cylinder (511) through a pipeline;
a ventilation pipe (510), the ventilation pipe (510) being horizontally disposed above the housing (5), the lower part of the ventilation pipe (510) is communicated with a vertical pipe (517), the lower end of the vertical pipe (517) penetrates through the shell (5) in a sealing manner and extends into the shell (5), one end of the ventilation pipe (510) is communicated with a mixing cylinder (508), the upper end of the mixing cylinder (508) is provided with an air inlet (509), the upper end of the air inlet (509) is communicated with a three-way pipe (512), one inlet of the three-way pipe (512) is communicated with the inside of the second pressure stabilizing cylinder (511) through a first air pipe (513), a first proportional valve (514) is installed on the first air pipe (513), the other inlet of the three-way pipe (512) is communicated with the interior of the first pressure stabilizing cylinder (507) through a second air pipe (515), and a second proportional valve (516) is installed on the second air pipe (515);
the lower end of the vertical pipe (517) is communicated with an outer sleeve (518), two ends of the inner part of the outer sleeve (518) are respectively rotatably provided with a first lantern ring (520) and a second lantern ring (521) through a sealing bearing (519), the end face of the second lantern ring (521) is provided with an inclined air outlet hole (522), the inner parts of the first lantern ring (520) and the second lantern ring (521) are fixedly connected with an inner sleeve (523), and the inner sleeve (523) is sleeved on the outer side of the deformed steel bar (1);
a driving motor (301) is fixedly installed on the outer side of one end of the gear box (3), a driving gear (303), a driven gear (305) and an intermediate gear (304) which are respectively meshed with the driving gear (303) are installed inside the gear box (3), transmission shafts (302) are installed inside the driving gear (303) and the driven gear (305), the driving gear (303) and the driven gear (305) are arranged in an up-and-down alignment mode, and the driving motor (301) is in transmission connection with the driving gear (303);
the heat dissipation cylinder (4) is rotatably installed on the transmission shaft (302) through a high-temperature-resistant supporting bearing (402), the transmission shaft (302) is located fixedly connected with stirring blades (403) on the inner surface of the heat dissipation cylinder (4), and copper powder (404) is contained in the heat dissipation cylinder (4).
4. The deformed steel bar hot rolling manufacturing and rolling finishing device as claimed in claim 3, wherein two layers of partition plates (5081) are fixedly connected to the inner portion of the mixing cylinder (508), and inclined holes (5082) with different inclination angles are formed in the two layers of partition plates (5081).
5. The deformed steel bar hot rolling manufacturing and rolling finishing device as claimed in claim 3, wherein the shell (5) is a stainless steel shell, and both ends of the shell (5) are provided with through holes (501) for the steel bars to pass in and out.
6. The deformed steel bar hot rolling manufacturing and rolling finishing device is characterized in that the heat dissipation cylinder (4) is a hard copper open cylinder, copper powder (404) in the heat dissipation cylinder (4) covers a height which is 2-3cm higher than the upper portion of the transmission shaft (302), and a counterweight lead block (401) is fixedly connected to the center of the bottom of the heat dissipation cylinder (4).
7. A deformed steel bar hot rolling manufacturing rolling finishing device according to claim 3, characterised in that the first gas pipe (513) and the second gas pipe (515) are both provided as high temperature resistant gas pipes and the first air blower (503) is provided as a hot gas blower.
8. A deformed steel bar hot rolling manufacturing rolling finishing device according to claim 3, characterized in that the driving motor (301) is a speed reduction motor, and the driving gear (303), the intermediate gear (304) and the driven gear (305) have the same diameter and number of teeth.
9. The deformed steel bar hot rolling manufacturing and rolling finishing device as claimed in claim 3, wherein three groups of the inclined air outlet holes (522) are arranged, the three groups of the inclined air outlet holes (522) are uniformly arranged on the surface of the second sleeve ring (521) in an annular shape, and the reverse acting force generated when the three groups of the inclined air outlet holes (522) are exhausted can drive the second sleeve ring (521) to rotate.
10. A deformed steel bar hot rolling manufacturing rolling finishing apparatus according to claim 3, wherein a gas pressure gauge for detecting the gas pressure inside the cylinder body and a temperature gauge for detecting the temperature inside the cylinder body are installed on each of the first and second pressure stabilizing cylinders (507) and (511).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011577539.5A CN112916613B (en) | 2020-12-28 | 2020-12-28 | Finish rolling method and device for hot rolling manufacturing of deformed steel bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011577539.5A CN112916613B (en) | 2020-12-28 | 2020-12-28 | Finish rolling method and device for hot rolling manufacturing of deformed steel bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112916613A true CN112916613A (en) | 2021-06-08 |
| CN112916613B CN112916613B (en) | 2022-03-04 |
Family
ID=76163078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011577539.5A Active CN112916613B (en) | 2020-12-28 | 2020-12-28 | Finish rolling method and device for hot rolling manufacturing of deformed steel bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112916613B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116511242A (en) * | 2023-06-26 | 2023-08-01 | 小熊猫线缆有限公司 | Continuous rolling and continuous annealing processing equipment for flexible fireproof cable |
| CN116571666A (en) * | 2023-04-02 | 2023-08-11 | 江苏省镔鑫钢铁集团有限公司 | Production equipment and process for micro-titanium treated high-strength anti-seismic deformed steel bar |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185938A (en) * | 2006-11-09 | 2008-05-28 | 钢铁研究总院 | Method for producing steel bar with rib |
| CN101518781A (en) * | 2009-03-31 | 2009-09-02 | 中国钢研科技集团公司 | Millarray for producing ultra-fine crystal bar and milling method thereof |
| CN110548768A (en) * | 2019-10-15 | 2019-12-10 | 首钢水城钢铁（集团）有限责任公司 | Online controlled rolling and controlled cooling method for PSB930 finish-rolled twisted steel |
| CN110576045A (en) * | 2019-10-18 | 2019-12-17 | 合肥集知匠心科技发展有限公司 | Finish rolling method for hot rolling manufacturing of deformed steel bar |
| CN111360066A (en) * | 2020-02-21 | 2020-07-03 | 中冶赛迪工程技术股份有限公司 | Low-cost, less-red-rust, high-strength and anti-seismic deformed steel bar production method and system |
| CN111394560A (en) * | 2020-03-31 | 2020-07-10 | 湖南华菱湘潭钢铁有限公司 | Production method of hot-rolled ribbed steel bar |
| CN111705266A (en) * | 2020-06-29 | 2020-09-25 | 阳春新钢铁有限责任公司 | 300 MPa-grade hot-rolled smooth round refractory steel bar and manufacturing method thereof |
-
2020
- 2020-12-28 CN CN202011577539.5A patent/CN112916613B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185938A (en) * | 2006-11-09 | 2008-05-28 | 钢铁研究总院 | Method for producing steel bar with rib |
| CN101518781A (en) * | 2009-03-31 | 2009-09-02 | 中国钢研科技集团公司 | Millarray for producing ultra-fine crystal bar and milling method thereof |
| CN110548768A (en) * | 2019-10-15 | 2019-12-10 | 首钢水城钢铁（集团）有限责任公司 | Online controlled rolling and controlled cooling method for PSB930 finish-rolled twisted steel |
| CN110576045A (en) * | 2019-10-18 | 2019-12-17 | 合肥集知匠心科技发展有限公司 | Finish rolling method for hot rolling manufacturing of deformed steel bar |
| CN111360066A (en) * | 2020-02-21 | 2020-07-03 | 中冶赛迪工程技术股份有限公司 | Low-cost, less-red-rust, high-strength and anti-seismic deformed steel bar production method and system |
| CN111394560A (en) * | 2020-03-31 | 2020-07-10 | 湖南华菱湘潭钢铁有限公司 | Production method of hot-rolled ribbed steel bar |
| CN111705266A (en) * | 2020-06-29 | 2020-09-25 | 阳春新钢铁有限责任公司 | 300 MPa-grade hot-rolled smooth round refractory steel bar and manufacturing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116571666A (en) * | 2023-04-02 | 2023-08-11 | 江苏省镔鑫钢铁集团有限公司 | Production equipment and process for micro-titanium treated high-strength anti-seismic deformed steel bar |
| CN116571666B (en) * | 2023-04-02 | 2024-01-30 | 江苏省镔鑫钢铁集团有限公司 | Production equipment and process for micro-titanium treated high-strength anti-seismic deformed steel bar |
| CN116511242A (en) * | 2023-06-26 | 2023-08-01 | 小熊猫线缆有限公司 | Continuous rolling and continuous annealing processing equipment for flexible fireproof cable |
| CN116511242B (en) * | 2023-06-26 | 2023-08-25 | 小熊猫线缆有限公司 | Continuous rolling and continuous annealing processing equipment for flexible fireproof cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112916613B (en) | 2022-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112916613B (en) | Finish rolling method and device for hot rolling manufacturing of deformed steel bar | |
| CN101300405B (en) | Steam turbine | |
| JP5703713B2 (en) | Construction machine drive | |
| CN212664512U (en) | Roller cooling and heat dissipation device | |
| CN109539833B (en) | '0' leakage type cooler and working method thereof | |
| CN210711641U (en) | Quenching cooling device for screw production | |
| CN114498990A (en) | Internal cooling structure of motor rotor | |
| CN204786468U (en) | Air -cooled high -efficient cold sediment machine of water -cooling | |
| KR20180048025A (en) | Hydrostatic spindle device for a roll grinder | |
| CN212316189U (en) | Stainless steel seamless pipe online annealing equipment | |
| CN207216093U (en) | A kind of optical fiber cable clad processing unit (plant) | |
| CN214491683U (en) | Even type autoclave air ducting | |
| JP2004060975A (en) | Duct for heat exchange | |
| CN105043139A (en) | Compound anti-burst cooling tube and manufacturing process thereof | |
| CN205527735U (en) | Do benefit to rolling ring of radiating hydrogen fluoride rotary furnace | |
| CN1299086C (en) | Hydrogen-storage alloy air conditioning device | |
| CN217022117U (en) | Crane car heating system and crane car | |
| CN110986574B (en) | Rotary kiln equipment for cement production | |
| CN220689249U (en) | Air conditioning air handling unit | |
| CN217438257U (en) | Chain piece surface heat treatment equipment | |
| JP7513852B2 (en) | Vulcanization Equipment | |
| CN220227220U (en) | Centrifugal fan of air compressor room | |
| CN217877172U (en) | Glass bead stove waste heat recovery device | |
| CN216837641U (en) | Float glass production kiln pool wall cooling structure | |
| CN218294401U (en) | Belt speed reducer input end bearing cooling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |