CN109175903B - Method for manufacturing roller bed frame blank of continuous rolling production line - Google Patents
Method for manufacturing roller bed frame blank of continuous rolling production line Download PDFInfo
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- CN109175903B CN109175903B CN201811130430.XA CN201811130430A CN109175903B CN 109175903 B CN109175903 B CN 109175903B CN 201811130430 A CN201811130430 A CN 201811130430A CN 109175903 B CN109175903 B CN 109175903B
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- 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 provides a manufacturing method of a roller bed frame blank of a continuous rolling production line, which comprises the following process characteristics: 1) blanking the thick plate component of the roller bed frame by adopting a blanking mode of 'embedded jacking'; 2) the transmission side roller bed frame and the operation side roller bed frame are fixed back to back, then the assembly welding of each component is carried out, the symmetrical welding seams of the transmission side roller bed frame and the operation side roller bed frame are welded simultaneously during the assembly welding, and the construction is carried out simultaneously from the two end parts of the two roller bed frames to the middle part; 3) and the transmission side roller way frame and the operation side roller way frame are integrally annealed after assembly welding. The manufacturing method of the roller bed frame blank of the continuous rolling production line can effectively reduce or avoid the deformation of the roller bed frame blank, and can greatly improve the utilization rate of raw materials, thereby reducing the manufacturing cost of the roller bed frame blank of the continuous rolling mill.
Description
Technical Field
the invention belongs to the technical field of metallurgical machinery, and relates to a method for manufacturing a roller bed frame blank of a continuous rolling production line.
Background
in large steel plants all over the country, the roller bed frames of roller bed equipment of a continuous rolling production line have approximately the same structure and are formed by assembling and welding thick plates, vertical plates, bottom plates and rib plates. The manufacturing method of the blank comprises the following steps: and (3) lofting according to a drawing to manufacture a steel plate blank of each component, welding after the rivet welding tools are combined, performing stress relief annealing after welding, checking the size, and correcting to eliminate or reduce blank deformation. The manufacturing method has obvious defects, the thick plate is cut and blanked by a numerical control machine, the material utilization rate is low, the manufacturing cost is high, and the product profit is very low; on the other hand, the thick plate is welded with the vertical plate after cutting and blanking by the numerical control machine tool, and in the welding process of the vertical plate and the bottom plate, due to the action of welding stress, the blank can generate large bending deformation after being manufactured, and after being transferred to a machining process, the blank can cause uneven allowance of the machining process, and part of the machined surface can not be machined easily and can only be repaired or scrapped. Therefore, a method for improving the manufacturing quality and the material utilization rate of the blank of the roller bed frame and reducing the production cost of the roller bed frame is urgently needed.
Disclosure of Invention
In order to overcome the defects of poor deformation quality of blanks and low raw material utilization rate of the blanks caused by the traditional manufacturing method of the roller bed blanks, the invention provides the manufacturing method of the roller bed blanks of the continuous rolling production line, which can effectively avoid the deformation of the roller bed blanks and greatly improve the raw material utilization rate.
The invention solves the technical problems by the following technical scheme, and provides a manufacturing method of a roller bed frame blank of a continuous rolling production line, which comprises the following process characteristics: 1) blanking the thick plate component of the roller bed frame by adopting a blanking mode of 'embedded jacking', reserving a plurality of connection points among blank materials in the cutting and blanking process, and cutting the connection points after the blank materials are cooled; 2) the transmission side roller bed frame and the operation side roller bed frame are fixed back to back, then the assembly welding of each component is carried out, the symmetrical welding seams of the transmission side roller bed frame and the operation side roller bed frame are welded simultaneously during the assembly welding, and the construction is carried out simultaneously from the two end parts of the two roller bed frames to the middle part; 3) and the transmission side roller way frame and the operation side roller way frame are integrally annealed under the condition of no disassembly after assembly welding is finished.
the nesting in machining refers to a method for improving the utilization rate of materials and reducing waste materials by nesting small materials with different shapes in limited raw material areas as much as possible to produce the small materials when the machined parts are discharged, so that the small materials are not easily discharged or are vacant at places when the machined parts are discharged, and in order to avoid great waste.
The invention relates to a 'jogged nesting' which is a nesting blanking mode that a plurality of thick parts are mutually staggered, wedged and jogged together.
The processing steps of the manufacturing method of the roller bed frame blank based on the continuous rolling production line comprise the following technical processes:
1) The thick plate blanking comprises the following sub-procedures: a. designing cutting lines of a plurality of thick plates by using a computer according to the size of the thick plates and the size of raw material steel plates in a blanking mode of 'embedding nesting'; b. drawing a cutting line, namely drawing the cutting line designed by a computer on a raw material steel plate; c. drawing a drilling line according to the cutting line and drilling a cutting hole; d. inputting a cutting program and cutting a thick plate blank by using a numerical control machine;
2) Cutting and blanking the vertical plate, the bottom plate and the rib plate by using a numerical control machine;
3) Planing the oppositely installed surfaces of the thick plate and the vertical plate respectively;
4) assembling and welding the components in a butt mode, fixing the bottom plates of the transmission side roller way frame and the operation side roller way frame back to back in pair, then assembling and welding other components, simultaneously welding symmetrical welding seams of the transmission side roller way frame and the operation side roller way frame during assembling and welding, and simultaneously constructing from two end portions of the two roller way frames to the middle;
5) After the back-to-back assembly welding of the transmission side roller way frame and the operation side roller way frame is finished, the whole body is annealed by a furnace;
6) and the transmission side roller bed frame and the operation side roller bed frame are detached, polished and formed.
Furthermore, in the cutting line drawing link in the thick plate blanking process, enough cutting line gap size is reserved among the workpieces, and the cutting line gap can not only ensure the size of the thick plate blank, but also enable cutting to be implemented.
furthermore, in the thick plate blanking process, drilling lines are drawn and holes are drilled according to the cutting lines, and the number of the drilled holes is ensured to be distributed at the starting point of a new continuous cutting line after a continuous cutting line is cut.
furthermore, in the process of assembling and welding each component, the bottom plates of the transmission side roller way frame and the operation side roller way frame are fixed in pairs back to back by welding baffle plates on the side surfaces of the two bottom plates in a spot welding manner.
Furthermore, a numerical control machine tool for blanking the thick plate is a numerical control flame cutting machine or a plasma cutting machine.
The process is arranged after the grinding and forming in the process 6) and all machining processes of the roller bed, namely the H-shaped steel member is not welded in the whole roller bed blank manufacturing process, and the welding is carried out after the machining processes of the roller bed are finished.
The invention has the beneficial effects that:
Compared with the roller bed frame blank manufacturing method in the prior art, the manufacturing method of the roller bed frame blank of the continuous rolling production line provided by the invention can effectively reduce or avoid the deformation of the roller bed frame blank, eliminate the condition of blank repair or scrap, and simultaneously greatly improve the utilization rate of raw materials, thereby reducing the manufacturing cost of the roller bed frame blank of the continuous rolling mill.
Drawings
FIG. 1 is a schematic view of a drive side roller bed;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of the operation side roller bed;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a diagram of the embedding sleeve and the drilling holes for processing the thick part of the roller bed;
FIG. 6 is a back-to-back fixed welding view of the drive side roller bed frame and the operation side roller bed frame;
FIG. 7 is a flow chart of a manufacturing process of a roller bed blank;
In the figure: 1. the steel plate drilling machine comprises a thick plate, 2, a vertical plate, 3, a rib plate, 4, a bottom plate, 5, H-shaped steel, 6, a raw material steel plate, 7, a cutting line, 8, a drilling line, 9, a connecting point, 10 and a baffle.
Detailed Description
the invention will be further described with reference to the following figures and specific examples:
Inquiring 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, wherein the roller bed frame is divided into a transmission side roller bed frame and an operation side roller bed frame, and the roller bed frame has the structural characteristics that: the structure of the long and thin rivet welding structure, the structure of the transmission side roller bed frame and the structure of the operation side roller bed frame are basically the same and are in a bilateral symmetry structure form; the dimension of the common continuous casting machine roller bed thick plate 1 is 300mm (width) X412mm (height) X5550 (length). Whether the roller bed frame on the transmission side or the operation side needs to be cut into a plurality of grooves on a thick plate, so the key of high and low material utilization rate is on the manufacturing method of the thick part 1. The manufacturing process of the roller frame blank comprises the following steps:
1) and blanking of the thick plate 1:
a. According to the size of the thick plate 1 and the size of the raw material steel plate 6, cutting lines 7 of a plurality of thick plates 1 are designed by a computer in a blanking mode of 'embedding jacking', the specification of the raw material steel plate 6 on the market at present can be realized on a whole steel plate to manufacture 8 thick plates 1, the cutting lines 7 of the thick plates 1 are designed according to the size of the whole steel plate and the size of the thick plates 1 through computer typesetting, and enough cutting gap sizes are reserved among the thick plates 1.
The nesting in machining refers to a method for improving the utilization rate of materials and reducing waste materials by nesting small materials with different shapes in limited raw material areas as much as possible to produce the small materials when the machined parts are discharged, so that the small materials are not easily discharged or are vacant at places when the machined parts are discharged, and in order to avoid great waste.
The 'embedded nesting' in the embodiment of the invention refers to a nesting blanking mode that a plurality of thick parts 1 are mutually staggered, wedged and embedded together.
b. A cutting line 7 is drawn, and the cutting line 7 designed by a computer is drawn on the raw material steel plate 6.
c. Drawing a drilling line 8 according to a cutting line 7 and drilling cutting holes, wherein the cutting holes are cut and cut by a cutting torch directly and cannot penetrate due to the fact that the thickness of a steel plate is large, the cutting holes are drilled before cutting, namely, the cutting torch starts to cut, dot-dash lines are drilled, and the number of the drilled holes is ensured to be distributed at the starting point of a new continuous cutting line after the cutting of one continuous cutting line is finished. And after the scribing is finished, drilling by using a drilling machine.
d. Inputting a cutting program to cut a thick plate blank by using a numerical control flame cutting machine, and keeping a plurality of connecting points 9 connected with each other during cutting for the following reasons: in the process of cutting the thick plate, a large amount of heat can be emitted, so that the cut part generates warping deformation, the cutting line behind the cutting by the cutting torch can deviate, therefore, the connecting points 9 connected with a plurality of positions are ensured not to be cut, and when the cutting is finished, the connecting points 9 are cut after the workpiece is cooled.
2) The vertical plate 2, the rib plate 3 and the bottom plate 4 are cut and blanked by a numerical control flame cutting machine.
3) planing the oppositely arranged surfaces of the thick plate 1 and the vertical plate 2 respectively; the thick plate 1 is transferred to a machining workshop, the thick plate 1 and the vertical plate 3 are planed to be aligned and assembled by a planer, the alignment and assembly of the thick plate 1 and the vertical plate 3 are convenient for alignment and assembly of next procedure, and the alignment and assembly of the thick plate 1 and the vertical plate 3 are guaranteed to be straight through machining.
4) And (3) assembling and welding the components, and assembling and welding the thick plate 1 and other steel plates of the roller frame in a rotary riveting welding workshop. The process is one of key processes for controlling welding deformation, in order to avoid welding deformation, the bottom plates 4 of the transmission side roller way frame and the operation side roller way frame are fixed together in pairs back to back, the side surfaces of the two bottom plates 4 can be fixed by welding baffle plates in a spot welding manner, and then other components are assembled and welded. The H-shaped steel 5 is not welded at first, and is welded after the roller bed frame is assembled and welded and each procedure is finished through machining. When the assembly welding is carried out, the symmetrical welding seams of the transmission side roller bed frame and the operation side roller bed frame are simultaneously welded, and the two ends of the two roller bed frames are simultaneously constructed towards the middle, so that two welders are respectively arranged on the transmission side roller bed frame and the operation side roller bed frame for welding.
5) and (4) stress relief annealing, wherein after back-to-back assembly welding of the transmission side roller way frame and the operation side roller way frame is completed, the whole body is annealed by a furnace. Because the internal stress formed by welding can cause the deformation of the roller frame, a stress relief annealing process must be arranged, and the mode and the method of the stress relief annealing are critical to preventing the deformation. After the back-to-back assembly welding of the transmission side and the operation side of the roller frame is completed, the roller frame still does not need to be disassembled, and the whole roller frame is annealed by a furnace.
6) And the transmission side roller bed frame and the operation side roller bed frame are detached, polished and formed. Cutting off the welding baffle plates 10 on the side surfaces of the two bottom plates 4, and grinding burrs and steel slag.
7) welding the machined bottom plate 4 with H-shaped steel; the welding process of the H-shaped steel member 5 and the bottom plate 4 is characterized in that the grinding forming of the process 6) and all machining processes of the roller bed are carried out in the process, namely the H-shaped steel member is not welded in the whole manufacturing process of the roller bed blank, and the welding is carried out after other machining processes of the roller bed are finished. And welding the H-shaped steel 5 and then finishing the manufacturing of the roller frame blank.
The manufacturing method of the roller bed frame blank of the continuous rolling mill production line provided by the embodiment of the invention has the advantages that: the deformation of the roller bed frame blank can be effectively reduced or avoided, the condition of repairing or scrapping the blank is reduced, and meanwhile, the utilization rate of raw materials can be greatly improved, so that the manufacturing cost of the roller bed frame blank of the continuous rolling mill is reduced.
the above embodiments and drawings are only for illustrating the technical solutions of the present invention and are not to be construed as limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions and substitutions can be made by those skilled in the art without departing from the spirit of the present invention and the scope of the present invention is also defined by the claims.
Nothing specifically described herein is prior art to the present invention.
Claims (7)
1. A manufacturing method of a roller bed frame blank of a continuous rolling production line is characterized by comprising the following steps: the method has the following process characteristics: 1) blanking a thick plate component of the roller bed frame by adopting a blanking mode of 'embedded jacking', reserving a plurality of connection points among blank materials in the cutting and blanking process, and cutting the connection points after the blank materials are cooled; 2) the assembly welding of each component is carried out after the bottom plates of the transmission side roller way frame and the operation side roller way frame are fixed back to back, the symmetrical welding seams of the transmission side roller way frame and the operation side roller way frame are simultaneously welded during the assembly welding, and the construction is simultaneously carried out from the two end parts of the two roller way frames to the middle part; 3) the transmission side roller way frame and the operation side roller way frame are integrally annealed under the condition of no disassembly after assembly welding is finished;
The method comprises the following steps of 1) blanking a thick plate; 2) cutting and blanking the vertical plate, the bottom plate and the rib plate by using a numerical control machine; 3) planing the oppositely installed surfaces of the thick plate and the vertical plate respectively; 4) assembling and welding the components in a butt mode, fixing the bottom plates of the transmission side roller bed frame and the operation side roller bed frame back to back in pair, and then assembling and welding other components; 5) stress relief annealing; 6) and the transmission side roller bed frame and the operation side roller bed frame are detached, polished and formed.
2. the manufacturing method of the roller frame blank of the continuous rolling production line according to claim 1, which is characterized in that: the thick plate blanking process comprises the following steps: a. designing cutting lines of a plurality of thick plates by using a computer according to the size of the thick plates and the size of raw material steel plates in a blanking mode of 'embedding nesting'; b. drawing a cutting line, namely drawing the cutting line designed by a computer on a raw material steel plate; c. drawing a drilling line according to the cutting line and drilling a cutting hole; d. inputting a cutting program and cutting the thick plate blank by a numerical control machine.
3. the manufacturing method of the roller frame blank of the continuous rolling production line according to claim 2, characterized in that: in the cutting line drawing link of the thick plate blanking process, enough cutting line gap size is reserved among workpieces, and the cutting line gap can not only ensure the size of a thick plate blank, but also enable cutting to be implemented.
4. The manufacturing method of the roller frame blank of the continuous rolling production line according to claim 2, characterized in that: in the thick plate blanking process, drilling lines are drawn and holes are drilled according to cutting lines, and the number of the drilled holes is ensured to be distributed at the starting point of a new continuous cutting line after one continuous cutting line is cut.
5. the manufacturing method of the roller frame blank of the continuous rolling production line according to claim 1, which is characterized in that: in the process of assembling and welding each component, the bottom plates of the transmission side roller way frame and the operation side roller way frame are fixed in pairs back to back by welding baffle plates on the side surfaces of the two bottom plates in a spot welding manner.
6. the manufacturing method of the roller frame blank of the continuous rolling production line according to claim 1, which is characterized in that: the numerical control machine tool for blanking the thick plate selects a numerical control flame cutting machine or a plasma cutting machine.
7. The manufacturing method of the roller frame blank of the continuous rolling production line according to claim 1, which is characterized in that: the process also comprises a welding process of the H-shaped steel member and the bottom plate, and the process is arranged after the grinding and forming of the process 6) and all machining procedures of the roller frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811130430.XA CN109175903B (en) | 2018-09-27 | 2018-09-27 | Method for manufacturing roller bed frame blank of continuous rolling production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811130430.XA CN109175903B (en) | 2018-09-27 | 2018-09-27 | Method for manufacturing roller bed frame blank of continuous rolling production line |
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| CN109175903A CN109175903A (en) | 2019-01-11 |
| CN109175903B true CN109175903B (en) | 2019-12-13 |
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| CN201811130430.XA Expired - Fee Related CN109175903B (en) | 2018-09-27 | 2018-09-27 | Method for manufacturing roller bed frame blank of continuous rolling production line |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2570052B2 (en) * | 1992-02-10 | 1997-01-08 | 東洋製罐株式会社 | Guide bar for manufacturing welded cans |
| CN100418698C (en) * | 2006-09-28 | 2008-09-17 | 哈尔滨工业大学 | Forming processing method for large-scale loop-forming element |
| KR100819850B1 (en) * | 2006-10-09 | 2008-04-07 | 신한다이아몬드공업 주식회사 | Diamond tools |
| CN101334659A (en) * | 2008-06-20 | 2008-12-31 | 郭向阳 | Numerical control cutting machine optimized nesting method |
| CN103785998A (en) * | 2014-02-20 | 2014-05-14 | 成军 | Manufacturing method of inclined electroslag welding component shaped like Chinese character 'ri' |
| CN105149726B (en) * | 2015-09-28 | 2017-09-15 | 中船黄埔文冲船舶有限公司 | A kind of numerical control nesting method of aluminum alloy strip gusset |
| CN105750687B (en) * | 2016-04-28 | 2019-04-02 | 中船黄埔文冲船舶有限公司 | A kind of numerical control nesting method of batch small part |
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Granted publication date: 20191213 Termination date: 20200927 |