CN214769578U - Large-scale vertical scroll end wearing and tearing build-up welding device of finishing mill - Google Patents
Large-scale vertical scroll end wearing and tearing build-up welding device of finishing mill Download PDFInfo
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- CN214769578U CN214769578U CN202121342993.2U CN202121342993U CN214769578U CN 214769578 U CN214769578 U CN 214769578U CN 202121342993 U CN202121342993 U CN 202121342993U CN 214769578 U CN214769578 U CN 214769578U
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- 238000003466 welding Methods 0.000 title description 89
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000003754 machining Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 23
- 230000008439 repair process Effects 0.000 abstract description 14
- 239000010410 layer Substances 0.000 description 25
- 239000000463 material Substances 0.000 description 11
- 238000005096 rolling process Methods 0.000 description 9
- 230000007547 defect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 4
- 239000002932 luster Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
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- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007778 shielded metal arc welding Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Abstract
The utility model discloses a wear surfacing device for the end head of a large vertical shaft of a finishing mill, which comprises a structural member frame and an adjusting tool; the structural member frame comprises a rectangular frame body, and a placing groove with a semicircular side surface is arranged at the upper part of the frame body; a plurality of semi-annular supporting pieces are arranged in the placing groove, a plurality of through holes are formed in the bottom of the placing groove, a vertical shaft end fixing pin penetrates through the center of one side end of the placing groove, and side fixing pins are symmetrically arranged on two sides of the end; every it is equipped with to run through in the through-hole adjust the frock, should adjust the frock and include jacking device and establish the arc supporting seat at this jacking device top, jacking device bottom and structure frame fixed connection. Use the utility model discloses, can implement fast and accomplish the large-scale vertical scroll end wear and tear surfacing repair of finishing mill, reduce purchasing cost, reduce long-time process and shut down the loss, produce various rim flanges and provide the guarantee for reasonable group.
Description
Technical Field
The utility model belongs to the technical field of welding equipment, a large-scale vertical scroll end wearing and tearing build-up welding device of finishing mill is related to.
Background
The production process of the tires with various specifications of Baokouma steel rail transit material science and technology Limited company is as follows: the method comprises the steps of cutting a raw material steel ingot qualified by inspection into required lengths through a disc cold saw, heating the cut steel ingot to a process temperature through an annular heating furnace, clamping the steel ingot to a hydraulic press through a movable manipulator for upsetting and punching, clamping the punched steel ingot through a fixed crane, and conveying the steel ingot to a roughing mill and a finishing mill for rolling and forming. In the process, a finishing mill rolling device mainly drives a gear to rotate through the lower part of a large vertical shaft, the middle part of the finishing mill rolling device is arranged in the center of a rolling fixed table, and dies of various rolling types are arranged at the upper end head of the finishing mill rolling device to be matched with the dies for rolling, as shown in figure 1, after the large vertical shaft 1 is operated for a long time and rolled by load, the end head 11 of the large vertical shaft is often seriously abraded, and the abraded end head of the large vertical shaft can influence the normal operation and rolling precision of a shaft system. Because the wheel band finishing mill vertical shaft is bulky, dismantlement, hoist and mount and transportation all have certain difficulty to transport the factory with the vertical shaft and restore, the time cycle is long, and the enterprise generally does not have spare parts moreover, will certainly cause the loss of stopping production for a period of time. In order to restore production as soon as possible, a surfacing device for the end head of the large vertical shaft of the finishing mill and a matched repairing process need to be formulated on an operation site to repair the abraded large vertical shaft, the hardness of the welded and repaired vertical shaft needs to be ensured to be larger than that of a base metal, a surfacing layer meets the operation size through manual grinding, the surface and the inner layer cannot have any welding defects, and the subsequent influence on the quality of an operation period is avoided.
SUMMERY OF THE UTILITY MODEL
To the large-scale vertical scroll of finishing mill that exists in the background art bulky, after its end wearing and tearing, dismantle, hoist and repair and all have the problem of certain difficulty, the utility model provides a large-scale vertical scroll end wearing and tearing build-up welding device of finishing mill and repair technology can implement fast and accomplish the large-scale vertical scroll end wearing and tearing build-up welding of finishing mill and repair, reduces purchasing cost, has reduced long-time process shutdown loss, produces various domestic and foreign rim flanges for reasonable group and provides the guarantee.
The utility model provides a technical problem's technical scheme as follows:
the utility model relates to a surfacing welding device for abrasion of large-scale vertical shaft end of a finishing mill, which comprises a structural member frame and an adjusting tool; the structural member frame comprises a rectangular frame body, and a placing groove with a semicircular side surface is arranged at the upper part of the frame body; a plurality of semi-annular supporting pieces are arranged in the placing groove, a plurality of through holes are formed in the bottom of the placing groove, a vertical shaft end fixing pin penetrates through the center of one side end of the placing groove, and side fixing pins are symmetrically arranged on two sides of the end; each through-hole runs through to be provided with one adjust the frock, should adjust the frock and include jacking device and set up the arc supporting seat at this jacking device top, jacking device's bottom and structure frame fixed connection.
As a further improvement of the technical scheme, the lower part of the frame body and the corresponding positions of the through holes on the placing groove are respectively welded with a base flange, the bottom of the jacking device is provided with a connecting flange, and the connecting flange and the base flange are correspondingly provided with a plurality of connecting holes and are fixedly connected through locking bolts.
As a further improvement of the technical scheme, the jacking device is an oil cylinder.
As a further improvement of the technical scheme, the structural member frame is machined by adopting channel steel of 200mm and a steel plate of 20 mm.
As a further improvement of the technical scheme, the fixing pin at the end of the vertical shaft is a full-thread screw rod with the diameter of 80mm, and the fixing pin at the side edge is a full-thread screw rod with the diameter of 30 mm.
The utility model relates to a repair technology of large-scale vertical scroll end of finishing mill wearing and tearing uses among the above-mentioned technical scheme a large-scale vertical scroll end of finishing mill wearing and tearing build-up welding device go on, will respectively adjust the frock and install on the structure frame, then with large-scale vertical scroll handling to the standing groove of structure frame in, carry out horizontal position adjustment and satisfying the build-up welding requirement back to large-scale vertical scroll through respectively adjusting the frock again, carry out rigid fixation through vertical scroll end fixed pin and two side fixed pins to the end of large-scale vertical scroll, then carry out the build-up welding and restore, concrete step as follows:
step one, preparing before welding;
1.1), welding equipment: HT400D digital control inversion type manual direct current argon arc welding machine, wherein welding rods adopt an E6015 welding rod and a D102 welding rod, and direct current is reversely connected;
1.2), oil stains, oxide layers, moisture and the like cannot be generated in a welding position area and a welding rod, and the metallic luster needs to be exposed;
1.3), welding technical requirements: the overlaying layer fuses base materials, and a welding seam cannot have any welding defects;
1.4), weldment material: covering a wear-resistant layer on the alloy steel cover of the base material;
1.5), auxiliary facilities: the device comprises heat-insulating cotton, a heat-insulating barrel, a sample plate, a temperature measuring instrument, a magnifying glass, a mask, gloves, a slag removal hammer, a chisel, a file, a steel wire brush, abrasive paper, a steel ruler, a horizontal ruler, a movable spanner, a straight grinder, an angle grinder, a steel wire plier, a steel saw blade and labor protection articles;
1.6), welding process parameters: determining welding parameters according to the material of a weldment, the specification of a welding rod and the welding requirements;
step two, surfacing repair;
2.1) because the end head of the large vertical shaft is worn greatly, before welding, a manual angle grinder is adopted to grind the surface of the worn part to obtain metallic luster, an oxygen-acetylene H01-20 baking gun is adopted to preheat the worn part, an infrared thermometer is used for assisting measurement and control, after the preheating temperature is reached, a base material bottom layer and a filling layer are welded firstly by an E6015 welding rod through manual electrode arc welding, then the outer wear-resistant layer is built up, and in the welding process, any welding defect is required to be detected layer by layer, and then the next layer is welded;
2.2) because the end head is abraded greatly, the interlayer temperature is required to be kept and proper hammering is carried out in the welding process to reduce the stress action;
2.3) because the end of the large-scale crankshaft is welded and repaired, the shaft deformation in the welding process needs to be controlled, and the rotary welding is adopted;
2.4) monitoring the micro-variable of the shaft in the welding process through the side fixing pins on the two sides of the end and the end erection vertical shaft end fixing pins, and timely adjusting the welding repair sequence when the large vertical shaft deforms in the welding process;
2.6), after welding, slowly cooling by welding heat-preservation cotton;
2.7) flaw detection is carried out on the welding seam shaft by adopting nondestructive testing, the surface adopts fluorescence testing, and the interior adopts ultrasonic testing;
2.8) after detecting no welding defect, processing the surfacing layer to accord with the use size through manual grinding, and delivering for use after the surfacing layer is qualified through operation inspection and acceptance of an on-site finishing mill.
As a further improvement of the technical scheme, the preheating temperature of the large vertical shaft end before welding is 100-150 ℃.
As a further improvement of the technical scheme, an E6015 welding rod with the diameter of 3.2mm is adopted as the bottom layer and the filling layer, the welding current is 80-110A, the arc voltage is 17 +/-1V, and the welding speed is 15 +/-1 cm/min; the covering surface layer adopts a D102 welding rod with the diameter of 4.0mm, the welding current is 130-160A, the arc voltage is 19 +/-1V, and the welding speed is 15 +/-1 cm/min.
Compared with the prior art, a large-scale vertical scroll end wearing and tearing build-up welding device of finishing mill, its novel structure, the configuration is compact, reasonable, the preparation material is common, preparation and maintenance cost are low, convenient operation, the operation is reliable, the corresponding repair technology of cooperation, not only safe easy operation, welding quality is stable, has satisfied on-the-spot actual demand, work efficiency is high, moreover greatly reduced the maintenance cost, reduced long-time process and shut down the loss, provide the guarantee for rationally organizing all kinds of wheel hub flanges of producing.
Drawings
FIG. 1 is a schematic structural view of a large vertical shaft according to the present invention;
fig. 2 is a schematic structural view of a large-scale vertical shaft end wear surfacing device of a finishing mill according to the present invention;
FIG. 3 is a schematic structural view of a large-scale vertical shaft end wear surfacing device for a finishing mill according to the present invention;
fig. 4 is an explosion schematic view of a large-scale vertical shaft end wear surfacing device of a finishing mill according to the present invention;
in the figure: 1. a large vertical shaft; 11. a tip; 2. a structural member frame; 21. a frame body; 22. a placement groove; 23. a semi-annular support; 24. a through hole; 25. a fixing pin for the end of the vertical shaft; 26. side fixing pins; 27. a base flange; 3. adjusting the tool; 31. a connecting flange; 32. a jacking device; 33. an arc-shaped supporting seat; 34. and locking the bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "upper", "lower", "left", "right", "front", "rear", and the like used in the specification and claims of the present disclosure are used only to indicate relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships are changed accordingly. The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Example 1:
as shown in fig. 1 to 4, the utility model relates to a wear surfacing welding device for large vertical shaft end of finishing mill, which comprises a structural member frame 2 for placing a large vertical shaft 1 and an adjusting tool 3 for adjusting the horizontal position of the large vertical shaft 1 and facilitating the lifting and rotation of the large vertical shaft 1; the structural member frame 2 is formed by machining a 200mm channel steel and a 20mm steel plate and comprises a rectangular frame body 21, wherein a placing groove 22 with a semicircular side face is formed in the upper part of the frame body 21, so that the horizontal placement of a large vertical shaft is met, and the large vertical shaft can rotate through hoisting, matching and surfacing; a plurality of semi-annular supporting pieces 23 are arranged in the placing groove 22, a plurality of through holes 24 for arranging the adjusting tool 3 are formed in the bottom of the placing groove, a vertical shaft end fixing pin 25 for fixing the end 11 of the large vertical shaft 1 in the pile welding process penetrates through the center of one end of the placing groove, side fixing pins 26 are symmetrically arranged on two sides of the placing groove, and the side fixing pins 26 are used for rigidly fixing the end 11 in the pile welding process and monitoring the micro-deformation of the middle shaft in the welding process; each through-hole 24 is internally provided with one adjusting tool 3 in a penetrating manner, each adjusting tool 3 comprises a jacking device 32 and an arc-shaped supporting seat 33 arranged at the top of the jacking device 32, and the bottom of the jacking device 32 is fixedly connected with the structural member frame 2. Further, the lower part of the frame body 21 and the corresponding position of each through hole 24 on the placing groove 22 are respectively welded with a base flange 27, the bottom of the jacking device 32 is provided with a connecting flange 31, the connecting flange 31 and the base flange 27 are correspondingly provided with a plurality of connecting holes and are fixedly connected through a locking bolt 34, and the stability of the adjusting tool 3 in use is effectively ensured.
In this embodiment, the jacking device 32 may be an oil cylinder, and is connected to a hydraulic system on site to perform lifting adjustment of the horizontal position of the large vertical shaft 1 placed thereon.
In this implementation, the vertical shaft end fixing pin 25 is a full-thread screw rod with a diameter of 80mm, and the side fixing pin 26 is a full-thread screw rod with a diameter of 30 mm.
Example 2:
as shown in fig. 1 to 4, the utility model relates to a repair technology of large-scale vertical scroll end of finishing mill wearing and tearing uses embodiment 1 a large-scale vertical scroll end of finishing mill wearing and tearing build-up welding device go on, will respectively adjust frock 3 and install on structure frame 2, then with 1 handling of large-scale vertical scroll to the standing groove 22 of structure frame 2 in, the rethread respectively adjusts frock 3 and carries out horizontal position adjustment and after satisfying the build-up welding requirement to large-scale vertical scroll 1, carry out rigid fixation to the end 11 of large-scale vertical scroll 1 through vertical scroll end fixed pin 25 and two side fixed pins 26, ensure the whole overall dimension of the end of large-scale vertical scroll after the build-up welding in the use tolerance scope, then carry out the build-up welding and restore, concrete step is as follows:
step one, preparing before welding;
1.1, welding equipment: HT400D digital control inversion type manual direct current argon arc welding machine, wherein welding rods adopt an E6015 welding rod and a D102 welding rod, and direct current is reversely connected;
1.2, oil stains, oxide layers, moisture and the like cannot be generated in a welding position area and a welding rod, and the metallic luster needs to be exposed;
1.3, welding technical requirements: the overlaying layer fuses base materials, and a welding seam cannot have any welding defects;
1.4, weldment material: covering a wear-resistant layer on the alloy steel cover of the base material;
1.5, auxiliary facilities: heat-insulating cotton, a heat-insulating barrel, a sample plate, a thermodetector, a magnifier, a mask, gloves, a slag removal hammer, a chisel, a file, a wire brush, sand paper, a steel ruler, a level bar, a movable spanner, a straight grinder, an angle grinder, a wire plier, a steel saw blade and labor protection articles (work clothes, shoes, a hat and a flat mirror);
1.16, welding process parameters:
manual shielded metal arc welding
Step two, surfacing repair;
2.1, because the end 11 of the large vertical shaft 1 is abraded greatly, before welding, a manual angle grinder is adopted to grind the surface of an abraded part to obtain metallic luster, an oxygen-acetylene H01-20 baking gun is adopted to preheat the abraded part, the preheating temperature is 100-150 ℃, an infrared thermometer is used for auxiliary measurement and control, after the preheating temperature is reached, a base material bottom layer and a filling layer are welded firstly by adopting an E6015 welding rod through manual electrode arc welding, then outer wear-resistant layer overlaying welding is carried out, and in the welding process, any welding defect does not need to be detected layer by layer, and then the next layer is welded;
2.2, because the end 11 is abraded greatly, the interlayer temperature is required to be kept and proper hammering is required to be carried out in the welding process so as to reduce the stress action;
2.3, because the end 11 of the large crankshaft 1 is welded and repaired, the shaft deformation in the welding process needs to be controlled, and the rotating welding is adopted, namely the large vertical shaft is rotated by hoisting, matching and overlaying welding;
2.4, monitoring the micro-variable of the shaft in the welding process through side fixing pins 26 on two sides of the end and end erection vertical shaft end fixing pins 25, adjusting the welding repair sequence in time when the large vertical shaft 1 deforms in the welding process, performing welding repair after rotating the vertical shaft by hoisting, and adjusting the deformation of the shaft in the welding repair process;
2.6, welding and slowly cooling heat-preservation cotton after welding is finished;
2.7, flaw detection is carried out on the welding seam shaft by adopting nondestructive testing, the surface is detected by adopting fluorescence, and the interior is detected by adopting ultrasonic waves;
and 2.8, after detecting no welding defect, manually grinding the surfacing layer to a size which accords with the use size, checking and accepting through the operation of an on-site finishing mill, delivering for use, and checking the rolling of a rim flange of a periodic finishing mill to ensure that the wear surfacing of the end head of the large vertical shaft achieves the use effect of mechanical performance.
Claims (6)
1. A large-scale vertical scroll end wear surfacing device of finishing mill, its characterized in that: the device comprises a structural member frame (2) and an adjusting tool (3); the structural member frame (2) comprises a rectangular frame body (21), and a placing groove (22) with a semicircular side surface is arranged at the upper part of the frame body (21); a plurality of semi-annular supporting pieces (23) are arranged in the placing groove (22), a plurality of through holes (24) are formed in the bottom of the placing groove, a vertical shaft end fixing pin (25) penetrates through the center of one side end of the placing groove, and side fixing pins (26) are symmetrically arranged on two sides of the end; every it is provided with one to run through in through-hole (24) adjust frock (3), should adjust frock (3) including jacking device (32) and set up arc supporting seat (33) at this jacking device (32) top, the bottom and the structure frame (2) fixed connection of jacking device (32).
2. The wear surfacing device for the large-scale vertical shaft end of the finishing mill according to claim 1, is characterized in that: the lower part of the frame body (21) and the corresponding positions of the through holes (24) on the placing groove (22) are respectively welded with a base flange (27), the bottom of the jacking device (32) is provided with a connecting flange (31), and the connecting flange (31) and the base flange (27) are correspondingly provided with a plurality of connecting holes and are fixedly connected through locking bolts (34).
3. The wear surfacing device for the large-scale vertical shaft end of the finishing mill according to claim 1 or 2, characterized in that: the jacking device (32) is an oil cylinder.
4. The wear surfacing device for the large-scale vertical shaft end of the finishing mill according to claim 3, is characterized in that: the structural member frame is formed by machining a 200mm channel steel and a 20mm steel plate.
5. The wear surfacing device for the large-scale vertical shaft end of the finishing mill according to claim 3, is characterized in that: the vertical shaft end fixing pin (25) is a full-thread screw rod with the diameter of 80mm, and the side fixing pin (26) is a full-thread screw rod with the diameter of 30 mm.
6. The wear surfacing device for the large-scale vertical shaft end of the finishing mill according to claim 4, is characterized in that: the vertical shaft end fixing pin (25) is a full-thread screw rod with the diameter of 80mm, and the side fixing pin (26) is a full-thread screw rod with the diameter of 30 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121342993.2U CN214769578U (en) | 2021-06-16 | 2021-06-16 | Large-scale vertical scroll end wearing and tearing build-up welding device of finishing mill |
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| CN202121342993.2U CN214769578U (en) | 2021-06-16 | 2021-06-16 | Large-scale vertical scroll end wearing and tearing build-up welding device of finishing mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182646A (en) * | 2021-06-16 | 2021-07-30 | 安徽马钢设备检修有限公司 | Surfacing device and repairing process for abrasion of large vertical shaft end of finishing mill |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182646A (en) * | 2021-06-16 | 2021-07-30 | 安徽马钢设备检修有限公司 | Surfacing device and repairing process for abrasion of large vertical shaft end of finishing mill |
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