CN101462223B - Method for processing large-sized ladle backing ring rotating shaft - Google Patents
Method for processing large-sized ladle backing ring rotating shaft Download PDFInfo
- Publication number
- CN101462223B CN101462223B CN2007100945773A CN200710094577A CN101462223B CN 101462223 B CN101462223 B CN 101462223B CN 2007100945773 A CN2007100945773 A CN 2007100945773A CN 200710094577 A CN200710094577 A CN 200710094577A CN 101462223 B CN101462223 B CN 101462223B
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- Prior art keywords
- rotating shaft
- backing ring
- external diameter
- ladle
- subjected
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- 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.)
- Expired - Fee Related
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012545 processing Methods 0.000 title claims description 13
- 238000003466 welding Methods 0.000 claims abstract description 15
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000003672 processing method Methods 0.000 claims description 11
- 238000005482 strain hardening Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000003754 machining Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract 3
- 239000010959 steel Substances 0.000 abstract 3
- 238000003801 milling Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012958 reprocessing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
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Abstract
The invention discloses a method for machining a rotating shaft of a backing ring of a large-scale steel ladle. The method is used for manufacturing the rotating shaft of the backing ring of the steel ladle with the outside diameter of the backing ring of more than 6,000 mm and gross weight of more than 50 tons; and the method comprises the following specific steps: step one, a backing ring welding piece is subjected to cold work and integral molding so that the dimension of the backing ring meets requirement of a drawing, and rotating shaft holes of two ends are machined; step two, two rotating shafts are independently machined, the first rotating shaft is subjected to finish machining so that the dimension precision of the first rotating shaft meets requirement of the drawing, the second rotating shaft is subjected to semi-finishing, and the outside diameter of the second rotating shaft is subjected to 5 to 8 mm allowance machining according to the dimension of the drawing; step three, the backing ring welding piece and two rotating shafts are welded and assembled; and step four, the outside diameter of the first rotating shaft is taken as a benchmark to perform alignment, and the outside diameter of the second rotating shaft is subjected to precision boring. The rotating shaft of the backing ring of the large-scale steel ladle manufactured by the method can meet requirement on coaxiality of the rotating shaft of the backing ring; and dimension and assembly dimension of each part have high precision.
Description
Technical field
The present invention relates to a kind of manufacture method of ladle backing ring rotating shaft, be specifically related to a kind of processing method of large-sized ladle backing ring rotating shaft.
Background technology
As shown in Figure 1, ladle backing ring rotating shaft comprises backing ring 3, and backing ring 3 two ends are provided with first rotating shaft 1 and 2 second rotating shafts, and the length of first rotating shaft 1 is greater than second rotating shaft 2.For small-sized ladle backing ring rotating shaft, generally adopt following processing method:
The rotating shaft 1,2 and backing ring 3 welding fabrications that 1, will have surplus earlier, processing rotating shaft 1,2 on horizontal lathe then meets the demands the axiality between first rotating shaft 1 and second rotating shaft 2.This processing method can only be used to process small-sized ladle backing ring rotating shaft, length overall L for backing ring rotating shaft is 9665mm, backing ring external diameter Φ A is 6300mm, and rotating shaft diameter of phi B only is the large-sized ladle backing ring rotating shaft of 800mm, because backing ring rotating shaft own wt overweight (workpiece weight is above 60 tons), the process equipment horizontal lathe is difficult to bear, and the backing ring rotating shaft of welding fabrication can't be placed on the horizontal lathe; And because backing ring external diameter Φ A is excessive, and rotating shaft diameter of phi B is too small, is subjected to the restriction of cutting linear velocity, the machining accuracy of rotating shaft can not be guaranteed, and therefore can't guarantee the axiality between first rotating shaft 1 and second rotating shaft 2.
2, earlier rotating shaft 1,2 is processed on request, then with rotating shaft 1,2 and backing ring 3 welding assemblings.This processing method is because welding deformation amount is bigger, wayward, and mismachining tolerance is bigger, also can't guarantee the axiality between first rotating shaft 1 and second rotating shaft 2.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of processing method of large-sized ladle backing ring rotating shaft, and it can guarantee in the ladle backing ring rotating shaft axiality between two rotating shafts.
For solving the problems of the technologies described above, the technical solution of the processing method of large-sized ladle backing ring rotating shaft of the present invention is:
Be used to make the backing ring external diameter more than 6000mm, gross weight is greater than 50 tons ladle backing ring rotating shaft; Concrete steps are as follows:
The first step, backing ring weldment cold-working monolithic molding make the backing ring size satisfy the drawing requirement; The shaft hole at processing two ends;
Second goes on foot, processes separately two rotating shafts;
The first rotating shaft fine finishining makes the first rotating shaft dimensional accuracy reach the drawing requirement;
The second rotating shaft semifinishing is stayed the processing of 5～8mm surplus with the external diameter of second rotating shaft by the figure size;
The length of first rotating shaft is greater than second rotating shaft;
The 3rd goes on foot, backing ring weldment and two rotating shafts welding is assembled;
The 4th step, be the benchmark centering by the first rotating shaft external diameter, the right boring second rotating shaft external diameter.
The technique effect that the present invention can reach is:
Use the present invention to make large-sized ladle backing ring rotating shaft, the large-sized ladle backing ring rotating shaft of manufacturing can satisfy the requirement of backing ring rotating shaft axiality; The present invention is with two length rotating shaft split processing back centering welding reprocessing minor axis external diameters, the precision height of each accessory size of the large-sized ladle backing ring rotating shaft of manufacturing and fitted position.
Use the present invention to make large-sized ladle backing ring rotating shaft, need not to use the large scale computer process equipment, easy and simple to handle, the efficient height; Effectively solved the overweight difficult problem that is subjected to the restriction of process equipment of product weight.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural representation of ladle backing ring rotating shaft;
Fig. 2 is the flow chart of the processing method of large-sized ladle backing ring rotating shaft of the present invention.
Among the figure, 1 first rotating shaft, 2 second rotating shafts, 3 backing rings, the length overall of L backing ring rotating shaft, Φ A backing ring external diameter, Φ B rotating shaft diameter.
The specific embodiment
As shown in Figure 2, the processing method of large-sized ladle backing ring rotating shaft of the present invention is used to make the backing ring external diameter more than 6000mm, and gross weight is greater than 50 tons ladle backing ring rotating shaft.Concrete steps are as follows:
1, backing ring 3 weldment cold-working monolithic moldings make backing ring 3 sizes satisfy the drawing requirement; The shaft hole at processing two ends;
Cold-working is shaped backing ring 3 weldments by figure is overall, welding, ultrasonic examination, stress relieving by annealing make backing ring 3 sizes satisfy the drawing requirement; Mark signature center line and school leveling line on backing ring 3 weldments, mark the shaft hole boring processing line that backing ring 3 two ends are used to install rotating shaft, backing ring 3 weldments are positioned on the revolving dial of digital-control boring-milling machine, adopt the shaft hole at digital-control boring-milling machine processing two ends, boring is to bevel for welding;
2, process two rotating shafts 1,2 separately;
2.1, first rotating shaft, 1 fine finishining: with first rotating shaft 1 by the figure dimensional requirement all processing put in place, dimensional accuracy reaches the drawing requirement;
2.2, second rotating shaft, 2 semifinishings: the external diameter of second rotating shaft 2 is stayed the processing of 5～8mm surplus by the figure size;
3, with backing ring 3 weldments and two rotating shaft 1,2 welding assemblings;
By two rotating shafts 1,2 of figure welding assembling, adopt infrared laser centering rotating shaft 1,2 external diameters in the backing ring 3 weldment both sides cold-workings that process during assembling, guarantee that two rotating shafts, 1,2 axialities meet the drawing requirement, postwelding weld seam annealing destressing;
4, be the benchmark centering by first rotating shaft, 1 external diameter, right boring second rotating shaft 2 external diameters.
Backing ring 3 weldments that are equipped with rotating shaft 1,2 are clamped on the revolving dial of digital-control boring-milling machine, former datum level volt is flat, rotating shaft 1,2 axially consistent with the guide rail direction of digital-control boring-milling machine, by first rotating shaft, 1 external diameter is the benchmark centering, alignment, with face cutter second rotating shaft 2 is wiped a cutter along axis simultaneously, with 45 ° of revolving dial rotations, ginseng is pressed the right boring of figure dimensional requirement to second rotating shaft, 2 external diameters then.
Use the present invention to make large-sized ladle backing ring rotating shaft, the large-sized ladle backing ring rotating shaft of manufacturing can satisfy the requirement of backing ring rotating shaft axiality; The present invention is with two length rotating shaft split processing back centering welding reprocessing minor axis external diameters, the precision height of each accessory size of the large-sized ladle backing ring rotating shaft of manufacturing and fitted position.
Use the present invention to make large-sized ladle backing ring rotating shaft, need not to use the large scale computer process equipment, easy and simple to handle, the efficient height; Effectively solved the overweight difficult problem that is subjected to the restriction of process equipment of product weight.
Claims (2)
1. the processing method of a large-sized ladle backing ring rotating shaft is characterized in that: be used to make the backing ring external diameter more than 6000mm, gross weight is greater than 50 tons ladle backing ring rotating shaft; Concrete steps are as follows:
The first step, backing ring weldment cold-working monolithic molding make the backing ring size satisfy the drawing requirement; The shaft hole at processing two ends;
Second goes on foot, processes separately two rotating shafts;
The first rotating shaft fine finishining makes the first rotating shaft dimensional accuracy reach the drawing requirement;
The second rotating shaft semifinishing is stayed the processing of 5～8mm surplus with the external diameter of second rotating shaft by the figure size; The length of described first rotating shaft is greater than second rotating shaft;
The 3rd goes on foot, backing ring weldment and two rotating shafts welding is assembled;
The 4th step, be the benchmark centering by the first rotating shaft external diameter, the right boring second rotating shaft external diameter.
2. the processing method of large-sized ladle backing ring rotating shaft according to claim 1 is characterized in that: adopt infrared laser centering rotating shaft external diameter during described the 3rd step welding assembling, guarantee that two rotating shaft axialities meet the drawing requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100945773A CN101462223B (en) | 2007-12-17 | 2007-12-17 | Method for processing large-sized ladle backing ring rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100945773A CN101462223B (en) | 2007-12-17 | 2007-12-17 | Method for processing large-sized ladle backing ring rotating shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101462223A CN101462223A (en) | 2009-06-24 |
| CN101462223B true CN101462223B (en) | 2010-08-11 |
Family
ID=40803140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100945773A Expired - Fee Related CN101462223B (en) | 2007-12-17 | 2007-12-17 | Method for processing large-sized ladle backing ring rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101462223B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057261B (en) * | 2014-06-30 | 2016-08-24 | 广东韶钢工程技术有限公司 | 120 tons of ladle processing technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657218A (en) * | 2004-02-19 | 2005-08-24 | 上海重型机器厂 | Welding method for backing ring trunnion of large converter |
| CN1701908A (en) * | 2005-06-21 | 2005-11-30 | 渤海船舶重工有限责任公司 | Heat mounting method for bracket-quoit trunnion |
| CN200981875Y (en) * | 2006-11-23 | 2007-11-28 | 鞍钢集团设计研究院 | Multi-adaptability composite structure large-scale] converter backing ring |
-
2007
- 2007-12-17 CN CN2007100945773A patent/CN101462223B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657218A (en) * | 2004-02-19 | 2005-08-24 | 上海重型机器厂 | Welding method for backing ring trunnion of large converter |
| CN1701908A (en) * | 2005-06-21 | 2005-11-30 | 渤海船舶重工有限责任公司 | Heat mounting method for bracket-quoit trunnion |
| CN200981875Y (en) * | 2006-11-23 | 2007-11-28 | 鞍钢集团设计研究院 | Multi-adaptability composite structure large-scale] converter backing ring |
Non-Patent Citations (1)
| Title |
|---|
| JP昭53-57103A 1978.05.24 |
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| Publication number | Publication date |
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| CN101462223A (en) | 2009-06-24 |
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Granted publication date: 20100811 Termination date: 20121217 |