CN218657462U - Surfacing device for repairing pressed copper nut of rolling mill - Google Patents
Surfacing device for repairing pressed copper nut of rolling mill Download PDFInfo
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- CN218657462U CN218657462U CN202223156408.7U CN202223156408U CN218657462U CN 218657462 U CN218657462 U CN 218657462U CN 202223156408 U CN202223156408 U CN 202223156408U CN 218657462 U CN218657462 U CN 218657462U
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- copper nut
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- welding gun
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Abstract
The utility model discloses a build-up welding device for repairing a copper nut pressed down by a rolling mill, a copper nut body is clamped by a chuck of a welding positioner, a supporting seat is arranged right in front of and below the copper nut body, a welding gun controller is arranged on the supporting seat, a welding gun is arranged at the front end of a support arm of the welding gun controller, the welding gun is connected with a wire feeding machine head, and the wire feeding machine head is connected with a power supply through an electric wire; and a dust hood is arranged above the welding gun opposite to the copper nut body. The utility model discloses use the build-up welding to be the thread to combine the characteristics of aluminium bronze product build-up welding, preferred lathe work's relevant embodiment accomplishes the build-up welding before the copper nut restores smoothly, the time of pressing down the copper nut after the restoration can reach more than ten months, has prolonged the live time of copper nut, can practice thrift the purchasing cost that the relevant enterprise pressed down the copper nut.
Description
Technical Field
The utility model relates to a be arranged in the prosthetic auxiliary assembly of steel rolling equipment copper nut, in particular to is used for rolling mill to push down prosthetic build-up welding device of copper nut.
Background
The rolling mill is a device for realizing the metal rolling process, and the screwdown used for adjusting the roll gap of the rolling mill is one of the important structures of the rolling mill and mainly comprises a screwdown screw rod, a screwdown nut and a transmission mechanism thereof. The large-scale reduction copper nut is an important part on a rolling mill, and the copper nut not only needs to be compact in structure, but also needs to have good wear resistance and high strength and toughness, so the material of the copper nut of the rolling mill reduction device fitting is generally aluminum bronze, such as 10-3 aluminum iron bronze or 9-4 aluminum iron bronze and the like. In the rolling process, each adjustment of a rolling seam is completed by pressing down the copper nut and the screw rod, and the screw rod is under the working conditions of frequent forward and reverse rotation and high temperature and is impacted when a rolled piece is bitten. In the prior art, worn copper nuts are directly replaced by new copper nuts, so that the equipment maintenance cost is increased, and the working progress is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be used for rolling mill to push down prosthetic build-up welding device of copper nut through carrying out the build-up welding to wearing and tearing copper nut, carries out the installation technical index that machining guaranteed copper nut again to the live time of extension copper nut, improve equipment's intact rate reduces the cost of maintenance of equipment, guarantees the normal production of enterprise.
In order to achieve the above purpose, the utility model provides the following technical scheme. A surfacing device for repairing a copper nut pressed down by a rolling mill comprises a welding positioner, wherein a copper nut body is clamped by a chuck of the welding positioner, a supporting seat is arranged right in front of and below the copper nut body, a welding gun controller is arranged on the supporting seat, a welding gun is arranged at the front end of a supporting arm of the welding gun controller, the welding gun is connected with a wire feeding machine head, and the wire feeding machine head is connected with a power supply through a wire; and a dust hood is arranged above the welding gun opposite to the copper nut body.
Furthermore, the welding gun controller is used for driving the welding gun to feed at a constant speed, so that the continuous and effective surfacing process is realized.
Further, the wire feeder head is used for continuously or intermittently feeding the welding wire to the welding gun position.
The utility model discloses use the build-up welding to be the thread to combine the characteristics of aluminium bronze product build-up welding, preferred lathe work's relevant embodiment accomplishes the build-up welding before the copper nut restores smoothly, the time of pressing down the copper nut after the restoration can reach more than ten months, has prolonged the live time of copper nut, can practice thrift the purchasing cost that the relevant enterprise pressed down the copper nut.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the welding machine comprises a copper nut body, 2 parts of a welding positioner, 3 parts of a welding gun, 4 parts of a wire feeding machine head, 5 parts of an electric wire, 6 parts of a power supply, 7 parts of a welding gun controller, 8 parts of a supporting seat and 9 parts of a dust hood.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. Referring to fig. 1, a surfacing device for repairing a copper nut pressed down by a rolling mill comprises a welding positioner 2 with the model of HB-20, a copper nut body 1 is clamped on a chuck of the welding positioner 2, a supporting seat 8 is arranged right below the copper nut body 1, a welding gun controller 7 (a portable numerical control cutting machine with the model of HB2015LCD-2.5 × 6) is arranged on the supporting seat 8, a welding gun 3 (the model of KR 350A) is arranged at the front end of a supporting arm of the welding gun controller 7, the welding gun 3 is connected with a wire feeding machine head 4 (the model of CS-401Y), and the wire feeding machine head 4 is connected with an arc welder power supply 6 (the model of Pulse inverter-350 and Pulse MIG/MAG) through an electric wire 5; a dust hood 9 is arranged above the welding gun 3 opposite to the copper nut body 1.
Through the utility model discloses accomplish after the build-up welding, adopt lathe work's method again, with the screw thread lathe tool according to the screw thread pitch who pushes down copper nut, will wear and tear the whole thread turning that warp and glue the greasy dirt and go out metallic luster. And then, performing surfacing treatment on the pressed copper nut by adopting a certain surfacing welding process (namely 'welding of aluminum bronze'). Since the most difficult of the aluminum brazing technique is the oxidation of aluminum to form refractory Al 2 O 3 The coating is easy to generate defects such as slag inclusion and the like, has hot brittleness and is easy to generate cracks when being covered on the surfaces of molten drops and a molten pool; secondly, the aluminum bronze welding can generate part of toxic and harmful gas. The utility model discloses a select suitable welding source, preheat temperature and weld back heat preservation slow cooling and use dust collecting equipment and adopt full-automatic welding technique, not let utensil such as people's close range weldingAnd by adopting a bulk measure, the surfacing welding of the copper nut pressed down by the rolling mill is successfully realized. And finally, turning the copper nut after surfacing cooling to meet the preset size requirement of the original drawing.
Example (b): the rolling mill screwdown copper nut body 2 is made of 10-3 aluminum iron bronze, is cylindrical in shape, one end face is an inwards concave spherical surface, the other end face is a flat surface, and threads are trapezoidal internal threads. The copper nut body 2 has a great amount of worn threads, is difficult to use normally and needs to be replaced by new spare parts or repaired. The device is adopted to fill all the thread of the copper nut body 2 by surfacing welding, and the allowance of subsequent turning is ensured. The operation process is as follows: before welding, oil stain in the copper nut body 2 needs to be cleaned, and defects such as welding air holes are avoided. The copper nut body 2 is clamped on the working table of the welding positioner 2, and the welding positioner 2 drives the copper nut body 2 to rotate according to the required rotating speed. The current domestic advanced double-pulse MIG welding technology is selected, the alternating current arc has the purification function, the oxide can be removed, the defects that slag inclusion is easy to generate in the brazing of the aluminum bronze and the like are overcome, and the welding of the low-melting-point aluminum bronze is facilitated. Preheating at about 250 ℃ is required before soldering. QA19-4 aluminum bronze welding wires are selected for welding, welding wires of a welding gun 3 are discharged through a wire feeding machine head 4 for welding, and the wire feeding machine head 4 continuously or intermittently feeds the welding wires to the position of the welding gun 3 according to actual requirements, so that a stable wire feeding process is realized. The wire 5 is used as a connecting wire of the wire feeding machine head 4 and the power supply 6, and the power supply 6 is used as a power supply of the arc welding machine. In order to realize automatic welding, a HB2015 LCD-2.5X 6 portable numerical control cutting machine is selected as a welding gun controller 7 to clamp a welding gun 3, the welding gun 3 is driven to feed into the copper nut body 1 at a constant speed at a certain running speed, and meanwhile, the continuous and effective surfacing process is realized in cooperation with the rotary motion of the copper nut body 1. And the welding gun controller 7 is supported by the supporting seat 8, so that the welding stability and the welding quality are improved. In the welding process, toxic gas generated by welding is sucked into dust collection equipment by adopting the dust collection cover 9 above the outer side of the copper nut body 1, so that the harm to the body of a person is avoided. After welding, the copper nut body 2 is covered with heat insulation cotton for slow cooling, so that cracks are avoided. After slow cooling, turning according to the pattern of the copper nut body 2 to meet the established size requirement of the original drawing, and realizing restoration.
Because the melting point of the aluminum bronze is lower (about 1000 ℃), the fluidity is good during solidification, and the thickness is not easy to pile up in the surfacing process. The method of turning in advance and reserving most of threads can be adopted, the original threads are favorable for stacking thickness in the surfacing process, the fusion of a welding wire and a copper nut body is facilitated, and the strength after welding is better.
Claims (3)
1. A surfacing device for repairing a copper nut pressed down by a rolling mill comprises a welding positioner and is characterized in that a copper nut body is clamped by a chuck of the welding positioner, a supporting seat is arranged right in front of and below the copper nut body, a welding gun controller is arranged on the supporting seat, a welding gun is arranged at the front end of a supporting arm of the welding gun controller, the welding gun is connected with a wire feeding machine head, and the wire feeding machine head is connected with a power supply through a wire; and a dust hood is arranged above the welding gun opposite to the copper nut body.
2. The surfacing device for repairing the pressed copper nut of the rolling mill according to claim 1, wherein the welding gun controller is used for driving a welding gun to feed at a constant speed so as to realize continuous and effective surfacing.
3. The weld overlay device for mill reduction copper nut repair according to claim 1, wherein the wire feeder head is configured to continuously or intermittently feed wire to a welding gun location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223156408.7U CN218657462U (en) | 2022-11-28 | 2022-11-28 | Surfacing device for repairing pressed copper nut of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223156408.7U CN218657462U (en) | 2022-11-28 | 2022-11-28 | Surfacing device for repairing pressed copper nut of rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218657462U true CN218657462U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223156408.7U Active CN218657462U (en) | 2022-11-28 | 2022-11-28 | Surfacing device for repairing pressed copper nut of rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218657462U (en) |
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2022
- 2022-11-28 CN CN202223156408.7U patent/CN218657462U/en active Active
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