CN111074881A - Cold and hot steel sheet pile and continuous forming method thereof - Google Patents
Cold and hot steel sheet pile and continuous forming method thereof Download PDFInfo
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- CN111074881A CN111074881A CN201911413074.7A CN201911413074A CN111074881A CN 111074881 A CN111074881 A CN 111074881A CN 201911413074 A CN201911413074 A CN 201911413074A CN 111074881 A CN111074881 A CN 111074881A
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- bending
- sheet pile
- steel sheet
- steel strip
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses a cold and hot steel sheet pile, which comprises a concave main body, wherein two ends of the concave main body are respectively provided with a first bending part, one end of the first bending part is provided with a second bending part, the second bending part is an L-shaped bending part, and the bending angle of the second bending part is 70-90 degrees. According to the invention, the hot-rolled hook inclined plane shape is formed by instantly heating the 15mm-20mm width parts of the two sides of the steel strip to 1150 ℃ by using the medium-frequency heater before the steel strip enters the upper roller and the lower roller, and then sequentially rolling and bending the steel strip in the upper roller and the lower roller to form the hot-rolled hook inclined plane shape, so that the steel sheet pile can integrate the advantages of a cold-bending steel sheet pile and a hot-rolling steel sheet pile, the performance parameters and the engineering quality of the steel sheet pile are greatly improved, the engineering cost is reduced, the work efficiency is improved, the production and manufacturing cost is greatly reduced, the application field of the cold-bending steel sheet pile is.
Description
Technical Field
The invention relates to the technical field of metal building materials, in particular to a cold and hot steel sheet pile, and also relates to a continuous forming method of the cold and hot steel sheet pile.
Background
The steel sheet pile is a section steel with locking notch, and its section has straight plate shape, groove shape and Z shape, and has various sizes and interlocking forms. The common forms include Larson type, Lakevanna type, etc. Its advantage does: the strength is high, and the soil can be easily driven into a hard soil layer; the construction can be carried out in deep water, and an inclined support is added to form a surrounding cage if necessary. The waterproof performance is good; the cofferdams with various shapes can be formed according to the requirement and can be repeatedly used, so that the cofferdams have wide application;
at present, two main steel sheet piles are widely used, hot rolled steel sheet piles are researched and produced in 1902 year in Germany and are rapidly and widely applied to developed industrialized countries all over the world, the history of more than 1 hundred years is existed so far, due to the limitations of the specification, length and weight of the hot rolled steel sheet piles, cold rolled steel sheet piles are produced in the last 70 th century, and various rapid, efficient, environment-friendly, economic and safe construction methods are recognized and rapidly developed along with the rapid development of economy in China. The steel sheet pile application project in China has certain development at the end of the 20 th century, and has unique advantages due to the special structure: the high-strength, light-weight, good water-resisting performance, strong durability, service life of 20-50 years, repeated use for dozens of times, obvious environment-friendly effect, capability of greatly reducing soil taking amount and concrete use amount in engineering, effective protection of land resources, stronger disaster relief and emergency rescue functions, particularly fast effect, simple construction, short construction period, lower construction cost and hot rolled steel sheet piles, and has the main advantages of good waterproof performance; the cold-bending steel sheet pile has the main advantages that compared with hot rolling, the cold-bending steel sheet pile saves materials by 15-30%, has strong flexibility and wide market adaptability, and has the main defects that the sealing performance is poorer than that of hot rolling;
therefore, how to lead the steel sheet pile connection wall in the foundation construction to have good rigidity strength, steel saving and good waterproof performance in the engineering construction.
Disclosure of Invention
The invention aims to provide a cold and hot steel sheet pile and a continuous forming method thereof, which are used for producing a new type steel sheet pile integrating the advantages of the cold bent steel sheet pile and the hot rolled steel sheet pile on a continuous roll bending production line, greatly improving the performance parameters and the engineering quality of the steel sheet pile, reducing the engineering cost and improving the work efficiency, thereby greatly reducing the production and manufacturing cost, widening the application field of the cold bent steel sheet pile, breaking the boundary between the hot rolled steel sheet pile and the cold bent pile and solving the problems.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a cold and hot steel sheet pile, includes the spill main part, the both ends of spill main part are provided with first portion of bending respectively, the one end of first portion of bending is provided with the second portion of bending, the second portion of bending sets up to L shape portion of bending.
Preferably, the second bending portion has a bending angle of 70 ° to 90 °.
The invention provides a continuous forming method of a cold and hot steel sheet pile, which comprises the following steps:
s1: feeding, namely feeding the strip steel coil corresponding to the section of the steel sheet pile into a feeding uncoiler;
s2: uncoiling, namely cutting the coiled steel strip to a required width according to the uncoiling size of the steel sheet pile and then placing the cut coiled steel strip at the feed end of a production line;
s3: leveling, namely leveling the steel strip by a leveling machine;
s4: heating the edges of the steel strip, and instantly heating the 15mm-20mm width parts of the two edges of the steel strip to 1150 ℃ by using a medium frequency heater;
s5: roll type continuous cold bending forming, namely heating the edge of the steel strip, then feeding the steel strip into a main rolling mill, sequentially roll-bending an upper roll mold and a lower roll mold of the main rolling mill to form the shape of a hot rolling hook inclined plane, and then continuously roll-bending and rolling the steel strip into a steel sheet pile in the shape of a hot rolling locking notch;
s6: cutting off, namely cutting off the formed steel sheet pile by a cutting machine according to the size requirement;
s7: and finishing, namely polishing the cut steel sheet pile by a polishing machine, and polishing burrs of the cut section.
Preferably, the leveling machine of step S3 includes a frame, an upper roller set, an upper auxiliary supporting roller set, a lower auxiliary supporting roller set, a lifting device, and a rotating device, wherein the upper roller set is mounted on the frame through the lifting device, the upper roller set and the lower roller set are both composed of a plurality of rollers, one of the rollers in the upper roller set is a pinch roller, the other is a leveling roller, and the leveling roller set is composed of the pinch roller, the lifting device includes a pinch roller lifting device and a leveling roller set lifting device, both ends of the pinch roller are respectively connected with pinch roller fixing devices disposed at both sides of the frame, pinch roller lifting devices are disposed between the pinch roller fixing devices at both sides and the top of the frame, the pinch roller lifting devices at both sides are connected through a rotating shaft, both ends of each leveling roller are respectively connected with the leveling roller fixing devices disposed at both sides of the frame, one or more leveling roller set lifting devices are arranged between the leveling roller set fixing devices on the two sides and the top of the frame, and the corresponding leveling roller set lifting devices on the two sides are also connected through a rotating shaft; and the top of one side of the rack is also provided with a lifting motor, and the lifting motor is connected with each leveling roller set lifting device on the same side of the lifting motor through a chain transmission device.
Preferably, in the step S4, the if heater uses an if power supply to establish an if magnetic field, so that an induced eddy current is generated in the ferromagnetic material and the ferromagnetic material is heated, thereby heating the material, wherein the if heater uses an if power supply of 200Hz-2500Hz to perform induction heating, and the rated capacity of the if heater is 5.0 t; the maximum working temperature is 1750 ℃; rated input current is 2280A; the rated power of the intermediate frequency power supply is 3000 KW.
Preferably, the main rolling mill set forth in step S5 is a multi-roll main rolling mill, and the main rolling mill includes at least: a group of 85-degree locking opening starting angle paired rollers for bending the second bending part to increase the starting angle deformation of two sides of the steel strip to 85 degrees; a group of 105-degree locking opening starting angle double rollers for bending the first bending part to increase the starting angle deformation of two sides of the steel strip to 105 degrees; and the 135-degree locking opening starting angle pair rollers are used for bending the concave main body, so that the starting angle deformation of two sides of the steel strip is increased to 135 degrees.
Preferably, the cutting machine in step S6 is a multi-disc type cutting machine, the cutting machine cuts the steel strip by using two sets of disc shears arranged in series, the maximum cutting thickness of the cutting machine is 40mm, the first set of disc shears cuts 5% -10% of the cut steel strip, and the second set of disc shears cuts the steel strip.
Preferably, the polishing machine in the step S6 is set as an electric polishing machine, and the rotation speed of the polishing machine is 1200r-1600 r/rain.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the hot-rolled hook inclined plane shape is formed by instantly heating the 15mm-20mm width parts of the two sides of the steel strip to 1150 ℃ by using the medium-frequency heater before the steel strip enters the upper roller and the lower roller, and then sequentially rolling and bending the steel strip in the upper roller and the lower roller to form the hot-rolled hook inclined plane shape, so that the steel sheet pile can integrate the advantages of a cold-bending steel sheet pile and a hot-rolling steel sheet pile, the performance parameters and the engineering quality of the steel sheet pile are greatly improved, the engineering cost is reduced, the work efficiency is improved, the production and manufacturing cost is greatly reduced, the application field of the cold-bending steel sheet pile is.
Drawings
FIG. 1 is a schematic structural view of a steel sheet pile according to the present invention;
fig. 2 is a schematic flow chart of the continuous forming method of the cold and hot steel sheet pile of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the specification.
Example 1
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a cold and hot steel sheet pile, includes spill main part 1, and the both ends of spill main part are provided with first bending portion 2 respectively, and the one end of first bending portion 2 is provided with the second bending portion 3, and the second bending portion 3 sets up to L shape bending portion, and the bending angle of the second bending portion 3 is 70 to 90.
Example 2
Referring to fig. 2, the present invention provides a method for continuously forming a cold and hot steel sheet pile, including the steps of:
s1: feeding, namely feeding the strip steel coil corresponding to the section of the steel sheet pile into a feeding uncoiler;
s2: uncoiling, namely cutting the coiled steel strip to a required width according to the uncoiling size of the steel sheet pile and then placing the cut coiled steel strip at the feed end of a production line;
s3: leveling, namely leveling the steel strip by a leveling machine;
s4: heating the edges of the steel strip, and instantly heating the 15mm-20mm width parts of the two edges of the steel strip to 1150 ℃ by using a medium frequency heater;
s5: roll type continuous cold bending forming, namely heating the edge of the steel strip, then feeding the steel strip into a main rolling mill, sequentially roll-bending an upper roll mold and a lower roll mold of the main rolling mill to form the shape of a hot rolling hook inclined plane, and then continuously roll-bending and rolling the steel strip into a steel sheet pile in the shape of a hot rolling locking notch;
s6: cutting off, namely cutting off the formed steel sheet pile by a cutting machine according to the size requirement;
s7: and finishing, namely polishing the cut steel sheet pile by a polishing machine, and polishing burrs of the cut section.
Step S3 the leveler comprises a frame, an upper roller set, an upper auxiliary supporting roller set, a lower auxiliary supporting roller set, a lifting device and a rotating device, wherein the upper roller set is installed on the frame through the lifting device, the upper roller set and the lower roller set are both composed of a plurality of rollers, one of the rollers in the upper roller set is a clamping roller, the other rollers are leveling rollers and form a leveling roller set, the lifting device comprises a clamping roller lifting device and a leveling roller set lifting device, two ends of each clamping roller are respectively connected with clamping roller fixing devices arranged on two sides of the frame, clamping roller lifting devices are arranged between the clamping roller fixing devices on two sides and the top of the frame, the clamping roller lifting devices on two sides are connected through rotating shafts, and two ends of each leveling roller are respectively connected with the leveling roller set fixing devices arranged on two sides of the frame, one or more leveling roller set lifting devices are arranged between the leveling roller set fixing devices on the two sides and the top of the frame, and the corresponding leveling roller set lifting devices on the two sides are also connected through a rotating shaft; and the top of one side of the rack is also provided with a lifting motor, and the lifting motor is connected with each leveling roller set lifting device on the same side of the lifting motor through a chain transmission device.
Step S4, the intermediate frequency heater uses the intermediate frequency power supply to establish the intermediate frequency magnetic field, so that the ferromagnetic material generates induction eddy current and generates heat, thereby achieving the purpose of heating the material, the intermediate frequency heater uses the intermediate frequency power supply of 200Hz-2500Hz to perform induction heating, and the rated capacity of the intermediate frequency heater is 5.0 t; the maximum working temperature is 1750 ℃; rated input current is 2280A; the rated power of the intermediate frequency power supply is 3000 KW.
The main rolling mill described in step S5 is set as a multi-high main rolling mill, and the main rolling mill includes at least: a group of 85-degree locking opening starting angle paired rollers for bending the second bending part to increase the starting angle deformation of two sides of the steel strip to 85 degrees; a group of 105-degree locking opening starting angle double rollers for bending the first bending part to increase the starting angle deformation of two sides of the steel strip to 105 degrees; and the 135-degree locking opening starting angle pair rollers are used for bending the concave main body, so that the starting angle deformation of two sides of the steel strip is increased to 135 degrees.
The cutting machine in the step S6 is a multi-disc type cutting machine, the cutting machine cuts the steel strip by using two groups of disc shears arranged in series, the maximum cutting thickness of the cutting machine is 40mm, and the first group of disc shears cuts 5% -10% of the cut steel strip and then cuts the steel strip by the second group of disc shears.
The polishing machine in the step S6 is set as an electric polishing machine, and the rotating speed of the polishing machine is 1200r-1600 r/rain.
In summary, the following steps: according to the invention, the hot-rolled hook inclined plane shape is formed by instantly heating the 15mm-20mm width parts of the two sides of the steel strip to 1150 ℃ by using the medium-frequency heater before the steel strip enters the upper roller and the lower roller, and then sequentially rolling and bending the steel strip in the upper roller and the lower roller to form the hot-rolled hook inclined plane shape, so that the steel sheet pile can integrate the advantages of a cold-bending steel sheet pile and a hot-rolling steel sheet pile, the performance parameters and the engineering quality of the steel sheet pile are greatly improved, the engineering cost is reduced, the work efficiency is improved, the production and manufacturing cost is greatly reduced, the application field of the cold-bending steel sheet pile is.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (8)
1. The utility model provides a cold and hot steel sheet pile, includes spill main part (1), its characterized in that, the both ends of spill main part are provided with first portion of bending (2) respectively, the one end of first portion of bending (2) is provided with second portion of bending (3), second portion of bending (3) set up to L shape portion of bending.
2. A cold-hot steel plate pile according to claim 1, characterized in that: the bending angle of the second bending part (3) is 70-90 degrees.
3. A method for continuously forming a cold and hot steel sheet pile according to claim 1, wherein: the method comprises the following steps:
s1: feeding, namely feeding the strip steel coil corresponding to the section of the steel sheet pile into a feeding uncoiler;
s2: uncoiling, namely cutting the coiled steel strip to a required width according to the uncoiling size of the steel sheet pile and then placing the cut coiled steel strip at the feed end of a production line;
s3: leveling, namely leveling the steel strip by a leveling machine;
s4: heating the edges of the steel strip, and instantly heating the 15mm-20mm width parts of the two edges of the steel strip to 1150 ℃ by using a medium frequency heater;
s5: roll type continuous cold bending forming, namely heating the edge of the steel strip, then feeding the steel strip into a main rolling mill, sequentially roll-bending an upper roll mold and a lower roll mold of the main rolling mill to form the shape of a hot rolling hook inclined plane, and then continuously roll-bending and rolling the steel strip into a steel sheet pile in the shape of a hot rolling locking notch;
s6: cutting off, namely cutting off the formed steel sheet pile by a cutting machine according to the size requirement;
s7: and finishing, namely polishing the cut steel sheet pile by a polishing machine, and polishing burrs of the cut section.
4. The continuous forming method of a cold and hot steel sheet pile according to claim 3, wherein: step S3 the leveler comprises a frame, an upper roller set, an upper auxiliary supporting roller set, a lower auxiliary supporting roller set, a lifting device and a rotating device, wherein the upper roller set is installed on the frame through the lifting device, the upper roller set and the lower roller set are both composed of a plurality of rollers, one of the rollers in the upper roller set is a clamping roller, the other rollers are leveling rollers and form a leveling roller set, the lifting device comprises a clamping roller lifting device and a leveling roller set lifting device, two ends of each clamping roller are respectively connected with clamping roller fixing devices arranged on two sides of the frame, clamping roller lifting devices are arranged between the clamping roller fixing devices on two sides and the top of the frame, the clamping roller lifting devices on two sides are connected through rotating shafts, and two ends of each leveling roller are respectively connected with the leveling roller set fixing devices arranged on two sides of the frame, one or more leveling roller set lifting devices are arranged between the leveling roller set fixing devices on the two sides and the top of the frame, and the corresponding leveling roller set lifting devices on the two sides are also connected through a rotating shaft; and the top of one side of the rack is also provided with a lifting motor, and the lifting motor is connected with each leveling roller set lifting device on the same side of the lifting motor through a chain transmission device.
5. The continuous forming method of a cold and hot steel sheet pile according to claim 3, wherein: step S4, the intermediate frequency heater uses the intermediate frequency power supply to establish the intermediate frequency magnetic field, so that the ferromagnetic material generates induction eddy current and generates heat, thereby achieving the purpose of heating the material, the intermediate frequency heater uses the intermediate frequency power supply of 200Hz-2500Hz to perform induction heating, and the rated capacity of the intermediate frequency heater is 5.0 t; the maximum working temperature is 1750 ℃; rated input current is 2280A; the rated power of the intermediate frequency power supply is 3000 KW.
6. The continuous forming method of a cold and hot steel sheet pile according to claim 3, wherein: the main rolling mill described in step S5 is set as a multi-high main rolling mill, and the main rolling mill includes at least: a group of 85-degree locking opening starting angle paired rollers for bending the second bending part to increase the starting angle deformation of two sides of the steel strip to 85 degrees; a group of 105-degree locking opening starting angle double rollers for bending the first bending part to increase the starting angle deformation of two sides of the steel strip to 105 degrees; and the 135-degree locking opening starting angle pair rollers are used for bending the concave main body, so that the starting angle deformation of two sides of the steel strip is increased to 135 degrees.
7. The continuous forming method of a cold and hot steel sheet pile according to claim 3, wherein: the cutting machine in the step S6 is a multi-disc type cutting machine, the cutting machine cuts the steel strip by using two groups of disc shears arranged in series, the maximum cutting thickness of the cutting machine is 40mm, and the first group of disc shears cuts 5% -10% of the cut steel strip and then cuts the steel strip by the second group of disc shears.
8. The continuous forming method of a cold and hot steel sheet pile according to claim 3, wherein: the polishing machine in the step S6 is set as an electric polishing machine, and the rotating speed of the polishing machine is 1200r-1600 r/rain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911413074.7A CN111074881A (en) | 2019-12-31 | 2019-12-31 | Cold and hot steel sheet pile and continuous forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911413074.7A CN111074881A (en) | 2019-12-31 | 2019-12-31 | Cold and hot steel sheet pile and continuous forming method thereof |
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| CN201911413074.7A Pending CN111074881A (en) | 2019-12-31 | 2019-12-31 | Cold and hot steel sheet pile and continuous forming method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63171312A (en) * | 1987-01-09 | 1988-07-15 | Kawasaki Steel Corp | Measuring apparatus for torsion of steel sheet pile |
| CN101293262A (en) * | 2008-06-19 | 2008-10-29 | 王银 | Continuous roller type cold bending shaping method for metal sheet pile |
| CN101954396A (en) * | 2010-05-31 | 2011-01-26 | 南京万汇钢板桩有限公司 | Roll type continuous cold-bending forming fabricating method for U-shaped steel sheet pile |
| CN103817180A (en) * | 2013-11-28 | 2014-05-28 | 昆明理工大学 | Roller-type continuous cold roll forming method for light steel sheet piles CSPL2 |
| CN104323417A (en) * | 2014-10-16 | 2015-02-04 | 云南昆船设计研究院 | Bulk tobacco leaf cutting processing system and method |
| CN108555063A (en) * | 2018-05-30 | 2018-09-21 | 南京大吉铁塔制造有限公司 | A kind of sheet material-rolling leveling apparatus |
-
2019
- 2019-12-31 CN CN201911413074.7A patent/CN111074881A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63171312A (en) * | 1987-01-09 | 1988-07-15 | Kawasaki Steel Corp | Measuring apparatus for torsion of steel sheet pile |
| CN101293262A (en) * | 2008-06-19 | 2008-10-29 | 王银 | Continuous roller type cold bending shaping method for metal sheet pile |
| CN101954396A (en) * | 2010-05-31 | 2011-01-26 | 南京万汇钢板桩有限公司 | Roll type continuous cold-bending forming fabricating method for U-shaped steel sheet pile |
| CN103817180A (en) * | 2013-11-28 | 2014-05-28 | 昆明理工大学 | Roller-type continuous cold roll forming method for light steel sheet piles CSPL2 |
| CN104323417A (en) * | 2014-10-16 | 2015-02-04 | 云南昆船设计研究院 | Bulk tobacco leaf cutting processing system and method |
| CN108555063A (en) * | 2018-05-30 | 2018-09-21 | 南京大吉铁塔制造有限公司 | A kind of sheet material-rolling leveling apparatus |
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Application publication date: 20200428 |