CN113199247A - One-time forming device and method for longitudinal submerged arc welded steel pipe - Google Patents
One-time forming device and method for longitudinal submerged arc welded steel pipe Download PDFInfo
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- CN113199247A CN113199247A CN202110335090.XA CN202110335090A CN113199247A CN 113199247 A CN113199247 A CN 113199247A CN 202110335090 A CN202110335090 A CN 202110335090A CN 113199247 A CN113199247 A CN 113199247A
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- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
Abstract
The invention relates to a one-time forming device and a one-time forming method for a longitudinal submerged arc welded steel pipe. The material preparation equipment is sequentially connected with the edge milling machine and the one-step forming combined machine through a material conveying roller way, and a steel plate ultrasonic measuring instrument is arranged between the material preparation equipment and the edge milling machine. The material preparation equipment comprises steel coil material preparation equipment and steel plate material preparation equipment, and the steel plate material preparation equipment is connected with the steel coil material preparation equipment through a steel plate moving platform. The forming process is completed by a steel pipe raw material preparation device, a steel plate ultrasonic flaw detection device, a steel plate edge milling groove, a steel plate pre-bending device, a rough forming device, a fine forming device, a sizing device, a joint closing device, a pre-welding device, a fixed-length pipe cutting device and a product discharging device in one step. The invention widens the material preparation mode, automatically controls the production of the longitudinal submerged arc welded steel pipe, improves the product quality and the production efficiency of the steel pipe, and is beneficial to reducing the cost and lightening the labor intensity.
Description
Technical Field
The invention belongs to the technical field of industrial production, relates to a steel pipe production technology, and particularly relates to a one-step forming device and method for a longitudinal submerged arc welded steel pipe.
Background
The longitudinal submerged arc welded steel pipe has excellent performance and will occupy great proportion in future fluid conveying pipeline, and the longitudinal submerged arc welded steel pipe for long oil and gas conveying pipeline will replace spiral submerged arc welded pipe gradually. The longitudinal submerged arc welded steel pipe has the advantages that in the construction of long-distance pipelines, the steel pipe for the line accounts for a considerable proportion, and generally, the investment of the steel pipe for the line accounts for about 35-40% of the total investment of the project. The welding process adopted by the submerged arc welding of the longitudinal seam steel pipe is a submerged arc welding technology, filler is adopted for welding, and the welding flux is protected by particles to form submerged arc. The produced caliber can reach 1500mm, LSAW is the English abbreviation of submerged arc welding straight seam steel pipe, and the production process of the submerged arc welding straight seam steel pipe comprises JCOE or UOE forming technology and roll forming submerged arc welding technology.
The forming process of the JCOE or UOE longitudinal submerged arc welded steel pipe only adopts a steel plate as a raw material to produce and prepare materials, has small selection limitation of the raw material, is in an offline state, for example, feeding, edge milling, forming, seaming and prewelding are all independent equipment, cannot form continuous forming production, each equipment needs to be independently operated and controlled, the production speed is not related to each other, each equipment is not in an online state, the production efficiency is low, the raw material cost is high, the automation program is low, the intervention by human factors is strong and serious, and the deviation of the outer diameter of the end of the steel pipe and the outer diameter of the pipe body is large.
Disclosure of Invention
The invention aims to provide a one-step forming device for a longitudinal submerged arc welded steel pipe, which widens the raw material preparation mode, automatically controls the production process of the longitudinal submerged arc welded steel pipe, improves the product quality and the production efficiency of the steel pipe, reduces the raw material cost and lightens the labor intensity of personnel. The invention also aims to provide a one-time forming method of the longitudinal submerged arc welded steel pipe,
the technical scheme of the invention is as follows: a one-step forming device for longitudinal submerged arc welded steel pipes comprises material preparation equipment, a material conveying roller way, an edge milling machine and a one-step forming combined machine. The one-step forming combined machine comprises a pre-bending machine, a rough forming machine, a fine forming machine, a sizing mill, a seaming machine, a pre-welding machine and milling, sawing and drawing equipment. The material preparation equipment is sequentially connected with an edge milling machine, a pre-bending machine, a rough forming machine, a fine forming machine, a sizing mill, a joint closing machine, a pre-welding machine and a milling saw drawing device through a material conveying roller way, and a steel plate ultrasonic measuring instrument is arranged between the material preparation equipment and the edge milling machine. The material preparation equipment comprises steel coil material preparation equipment and steel plate material preparation equipment, and the steel plate material preparation equipment is connected with the steel coil material preparation equipment through a steel plate moving platform.
The steel coil preparation equipment comprises a standby coil table, an uncoiler, a straight head machine, a leveling machine and a plate shearing machine, wherein the standby coil table is sequentially connected with the uncoiler, the straight head machine, the leveling machine and the plate shearing machine through a material conveying roller way, and the plate shearing machine is connected to an edge milling machine through the material conveying roller way. The steel plate preparation equipment comprises a plate preparation platform, an automatic plate feeding machine, a plate conveying platform and a material conveying roller way, wherein the plate preparation platform is connected with the plate conveying platform through the automatic plate feeding machine, and the plate conveying platform is connected with the material conveying roller way. The material conveying roller way of the steel plate material preparation equipment is connected with the material conveying roller way of the steel coil material preparation equipment through a steel plate moving platform, and a steel plate moving machine which moves between the steel coil material preparation area and the steel plate material preparation area is arranged on the steel plate moving platform.
The prebending machine between the edge milling machines is provided with an offset roller, the milling saw drawing equipment is connected with a discharging guide rail through an output roller way, and the discharging guide rail is provided with a transverse moving vehicle. The material conveying roller way is hydraulic chain conveying equipment. The device is provided with a control unit which is communicated with control mechanisms of material preparation equipment, a material conveying roller way, a steel plate ultrasonic measuring instrument, an edge milling machine, a pre-bending machine, a rough forming machine, a fine forming machine, a sizing machine, a joint closing machine, a pre-welding machine, milling, sawing and drawing equipment and discharging equipment.
The invention relates to a method for one-time forming of a longitudinal submerged arc welded steel pipe, which is completed by a longitudinal submerged arc welded steel pipe forming device in one time from the preparation of raw materials of the steel pipe, the ultrasonic flaw detection of a steel plate, the edge milling and groove milling of the steel plate, the pre-bending of the steel plate, the rough forming, the fine forming, the sizing, the joint closing, the pre-welding, the pipe cutting to length and the product discharging.
The raw material preparation of the pipe adopts two modes of steel coil feeding or steel plate feeding, the steel pipe with the caliber of 610mm or less is preferentially produced by the steel coil feeding mode, and the steel plate feeding mode is a standby method for producing and feeding longitudinal submerged arc welded steel pipes. When producing steel pipes with the same specification, a steel coil feeding mode or a steel plate feeding mode is adopted, or the steel coil feeding mode or the steel plate feeding mode is alternately adopted.
The forming process is controlled by an automatic program, the automatic program has the function of automatically tracking the steel plate, the speed of the forming process is monitored, and the feeding speed and the steel pipe forming speed are automatically corrected and matched. The forming speed of the steel pipe is 7-9 m/min
The one-time forming device and the one-time forming method for the longitudinal submerged arc welded steel pipe broaden raw material preparation modes and automatically control the production of the longitudinal submerged arc welded steel pipe, and compared with the prior art, the device and the method have the advantages that: firstly, all the devices participating in the forming are interconnected to form a production line, and the one-time completion from feeding to steel pipe forming is realized. And the JCOE process is optimized, and the forming quality of the steel pipe is stable. Thirdly, feeding is carried out in a plate mode and a coil mode, coil production is preferentially selected, and raw material cost is saved. The production speed can reach 9m/min, and the production efficiency is improved. The product is diversified, and the market competitiveness is improved. And sixthly, the forming process of the longitudinal submerged arc welded steel pipe realizes programmed automatic control, thereby not only ensuring the product quality and the production efficiency of the steel pipe, but also reducing the labor intensity and simultaneously improving the production safety coefficient.
Drawings
FIG. 1 is a schematic flow chart of a one-step forming device for longitudinal submerged arc welded steel pipes according to the present invention;
FIG. 2 is a schematic flow diagram of a stock preparation apparatus;
FIG. 3 is a schematic view of a one-step forming process of a longitudinal submerged arc welded steel pipe.
Wherein: 1-steel plate, 2-material conveying roller way, 3-output roller way, 4-discharge guide rail, 5-pre-bending machine, 6-rough forming machine, 7-fine forming machine, 8-sizing machine, 9-joint closing machine, 10-pre-welding machine, 11-milling saw drawing equipment, 12-steel plate moving machine, 13-coiling preparation table, 14-uncoiling machine, 15-straight head machine, 16-leveling machine, 17-plate shearing machine, 18-counter punching roller, 19-transverse moving vehicle, 20-rack, 21-plate preparation table, 22-plate feeding machine, 23-plate conveying table and 24-steel plate moving table.
Detailed Description
The present invention will be described in detail with reference to the following examples and drawings. The scope of protection of the invention is not limited to the embodiments, and any modification made by those skilled in the art within the scope defined by the claims also falls within the scope of protection of the invention.
The one-step forming device for the longitudinal submerged arc welded steel pipe disclosed by the invention is shown in figure 1 and comprises material preparation equipment, a material conveying roller way, an edge milling machine and a one-step forming combination. The one-step forming combined machine comprises a pre-bending machine 5, a rough forming machine 6, a fine forming machine 7, a sizing mill 8, a seaming machine 9, a pre-welding machine 10 and a milling saw drawing device 11. The material preparation equipment is sequentially connected with an edge milling machine, a pre-bending machine, a rough forming machine, a fine forming machine, a sizing mill, a joint closing machine, a pre-welding machine and a milling saw drawing device through a material conveying roller way, and a steel plate ultrasonic measuring instrument is arranged between the material preparation equipment and the edge milling machine. The pre-bending machine 5 between the edge milling machines 4 is provided with an offset roller 18, the milling saw drawing device 11 is connected with the discharging guide rail 4 through an output roller way 3, and the discharging guide rail 4 is provided with a transverse moving vehicle 19.
The material preparation equipment comprises steel coil material preparation equipment and steel plate material preparation equipment, and the steel plate material preparation equipment is connected with the steel coil material preparation equipment through a steel plate moving platform. As shown in fig. 2, the steel coil preparation equipment comprises a standby coil table 13, an unwinder 14, a straight head machine 15, a leveler 16 and a plate shearing machine 17, wherein the standby coil table is sequentially connected with the unwinder, the straight head machine, the leveler and the plate shearing machine through a material conveying roller way 2, the plate shearing machine is connected to the edge milling machine through the material conveying roller way 2, and the material conveying roller way 2 is hydraulic chain conveying equipment. The steel plate preparation equipment comprises a plate preparation table 21, an automatic plate feeding machine 22, a plate conveying table 23 and a material conveying roller way 2, wherein the plate preparation table is connected with the plate conveying table through the automatic plate feeding machine, the plate conveying table is connected with the material conveying roller way 2, the material conveying roller way 2 of the steel plate preparation equipment is connected with the material conveying roller way 2 of the steel plate preparation equipment through a steel plate moving table 24, and a steel plate moving machine 12 moving between a steel plate preparation area and the steel plate preparation area is arranged on the steel plate moving table. The device is provided with a control unit which is communicated with control mechanisms of material preparation equipment, a material conveying roller way 2, a steel plate ultrasonic measuring instrument 3, an edge milling machine 4, a pre-bending machine 5, a rough forming machine 6, a fine forming machine 7, a sizing mill 8, a joint closing machine 9, a pre-welding machine 10, a milling saw drawing device 11 and discharging equipment, and controls the one-step forming process of the longitudinal submerged arc welded steel pipe by utilizing an automatic program.
The forming process of the one-step forming device for the longitudinal submerged arc welded steel pipe is shown in figure 3 and is completed by the one-step forming device for the longitudinal submerged arc welded steel pipe from the raw material preparation of the steel pipe, the ultrasonic flaw detection of the steel plate, the edge milling and groove milling of the steel plate, the pre-bending of the steel plate, the rough forming, the fine forming, the sizing, the joint closing, the pre-welding, the pipe cutting to length and the product discharging.
The raw material preparation of the steel pipe adopts two modes of steel coil feeding or steel plate feeding, the steel pipe with the caliber of 610mm or less is preferentially produced by the steel coil feeding mode, and the steel plate feeding mode is a standby method for producing and feeding longitudinal submerged arc welded steel pipes. When producing steel pipes with the same specification, a steel coil feeding mode or a steel plate feeding mode is adopted, or the steel coil feeding mode or the steel plate feeding mode is alternately adopted. The forming process is controlled by an automatic program, the automatic program has the function of automatically tracking the steel plate, the speed of the forming process is monitored, and the feeding speed and the steel pipe forming speed are automatically corrected and matched. The steel pipe forming speed is 8.5 m/min.
All the equipment participating in the forming of the longitudinal submerged arc welded steel pipe production line are interconnected, and the line production and one-step forming are realized from feeding to steel pipe forming, sizing and pipe cutting. The JCOE process is optimized, the forming quality of the steel pipe is stable, the ovality of the pipe body of the steel pipe formed by the method is consistent with that of the pipe end, and the caliber of the pipe end is consistent with that of the pipe body. The method adopts two modes of plate feeding and coil feeding, changes the feeding mode of a single steel plate in the JCOE process, preferentially selects coil materials for producing the steel pipes with the calibers of phi 610 and below, and saves a large amount of raw material cost. The longitudinal submerged arc welding steel pipe equipment is connected with one another for one-time forming, the production speed is consistent, the forming quality is stable, after the steel pipe is prewelded, the defects are few, the welding line is uniform, and prewelding repair is not needed. The molding equipment is interconnected, and the programs among all the production steps are automatically controlled, so that the production process quality is ensured, the human intervention factors are avoided, the labor intensity is reduced, and the safety production coefficient is improved.
Claims (9)
1. A one-time forming device for longitudinal submerged arc welded steel pipes is characterized in that: the device comprises a material preparation device, a material conveying roller way (2), an edge milling machine and a one-step forming combined machine; the one-step forming combined machine comprises a pre-bending machine (5), a rough forming machine (6), a fine forming machine (7), a sizing mill (8), a seaming machine (9), a pre-welding machine (10) and a milling saw drawing device (11); the material preparation equipment is sequentially connected with an edge milling machine, a pre-bending machine, a rough forming machine, a fine forming machine, a sizing mill, a joint closing machine, a pre-welding machine and milling saw drawing equipment through a material conveying roller way, and a steel plate ultrasonic measuring instrument is arranged between the material preparation equipment and the edge milling machine; the material preparation equipment comprises steel coil material preparation equipment and steel plate material preparation equipment, and the steel plate material preparation equipment is connected with the steel coil material preparation equipment through a steel plate moving platform (24).
2. The longitudinal submerged arc welded steel pipe one-time forming device according to claim 1, characterized in that: the steel coil preparation equipment comprises a standby coil table (13), an unwinder (14), a straight head machine (15), a leveler (16) and a plate shearing machine (17), wherein the standby coil table is sequentially connected with the unwinder, the straight head machine, the leveler and the plate shearing machine through a material conveying roller way, and the plate shearing machine is connected to an edge milling machine through a material conveying roller way (2); the steel plate preparation equipment comprises a plate preparation platform (21), an automatic plate feeding machine (22), a plate conveying platform (23) and a material conveying roller way (2), wherein the plate preparation platform is connected with the plate conveying platform through the automatic plate feeding machine, and the plate conveying platform is connected with the material conveying roller way (2); the material rollgang (2) of the steel plate material preparation equipment is connected with the material rollgang (2) of the steel coil material preparation equipment through a steel plate moving platform (24), and a steel plate moving machine (12) which moves between the steel coil material preparation area and the steel plate material preparation area is arranged on the steel plate moving platform.
3. The longitudinal submerged arc welded steel pipe one-time forming device according to claim 1, characterized in that: the prebending machine (5) between the edge milling machines (4) is provided with an offset roller (18), the milling, cutting, sawing and drawing equipment (11) is connected with the discharging guide rail (4) through an output roller way (3), and the discharging guide rail (4) is provided with a transverse moving vehicle (19); the material conveying roller way (2) is hydraulic chain conveying equipment.
4. The longitudinal submerged arc welded steel pipe one-time forming device according to claim 1, characterized in that: the device is provided with a control unit, and the control unit is communicated with control mechanisms of material preparation equipment, a material conveying roller way (2), a steel plate ultrasonic measuring instrument (3), an edge milling machine (4), a pre-bending machine (5), a coarse forming machine (6), a fine forming machine (7), a sizing mill (8), a joint closing machine (9), a pre-welding machine (10), milling saw drawing equipment (11) and discharging equipment.
5. A method for forming a longitudinal submerged arc welded steel pipe by a single-shot forming apparatus according to claim 1, characterized in that: the forming process of the longitudinal submerged arc welded steel pipe is completed by a longitudinal submerged arc welded steel pipe forming device at one time from steel pipe raw material preparation, steel plate ultrasonic flaw detection, steel plate edge milling groove, steel plate pre-bending, rough forming, fine forming, sizing, joint closing, pre-welding, pipe sizing and pipe cutting to product discharging.
6. The one-step forming method of a longitudinal submerged arc welded steel pipe according to claim 5, characterized by comprising the steps of: the raw material preparation of the steel pipe (1) adopts two modes of steel coil feeding or steel plate feeding, steel pipes with the caliber of phi 610mm or less are preferentially produced by the steel coil feeding mode, and the steel plate feeding mode is a standby method for producing and feeding longitudinal submerged arc welded steel pipes.
7. The one-step forming method of a longitudinal submerged arc welded steel pipe according to claim 5, characterized by comprising the steps of: when producing steel pipes with the same specification, a steel coil feeding mode or a steel plate feeding mode is adopted, or the steel coil feeding mode or the steel plate feeding mode is alternately adopted.
8. The one-step forming method of a longitudinal submerged arc welded steel pipe according to claim 5, characterized by comprising the steps of: the forming process is controlled by an automatic program, the automatic program has the function of automatically tracking the steel plate, the speed of the forming process is monitored, and the feeding speed and the steel pipe forming speed are automatically corrected and matched.
9. The one-step forming method of a longitudinal submerged arc welded steel pipe according to claim 8, characterized in that: the forming speed of the steel pipe is 7-9 m/min.
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| CN202110335090.XA CN113199247A (en) | 2021-03-29 | 2021-03-29 | One-time forming device and method for longitudinal submerged arc welded steel pipe |
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| CN202110335090.XA CN113199247A (en) | 2021-03-29 | 2021-03-29 | One-time forming device and method for longitudinal submerged arc welded steel pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115846791A (en) * | 2023-03-03 | 2023-03-28 | 无锡市源隆金属制品有限公司 | Welding device for automobile straight welded pipe |
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