CN103056495A - Welding device and welding method for large gears - Google Patents
Welding device and welding method for large gears Download PDFInfo
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- CN103056495A CN103056495A CN2012105736968A CN201210573696A CN103056495A CN 103056495 A CN103056495 A CN 103056495A CN 2012105736968 A CN2012105736968 A CN 2012105736968A CN 201210573696 A CN201210573696 A CN 201210573696A CN 103056495 A CN103056495 A CN 103056495A
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Abstract
The invention discloses a welding device and a welding method for large gears and relates to the welding technical field. A surfacing transition layer is surfaced through submerged automatic arc welding with a manipulator, and accordingly, the labor intensity is reduced greatly, and the welding quality is improved; by means of the surfacing transition layer, the carbon equivalent of the welding area is reduced, the ductility and toughness of a fusion area is improved, and simultaneously, the radial stress is released, and cracks are avoided during wheel disc welding. Simultaneously, due to the constant rotation of a gear during welding, only a heater of 1/3 circumference is needed during preheating, and a circular heater is not needed so as to control deformation, so that the working environment is improved greatly, and the labor intensity is reduced. As the 100% nondestructive inspection of weld joints before and after heat treatment is qualified for one time, welding deformation caused by local repairing is avoided. The welding device has the advantages of being simple in structure, convenient to operate and the like, and the welding device and the welding method are suitable for large-range popularization and application.
Description
[technical field]
The present invention relates to welding technology field, relate in particular to a kind of welder and welding method thereof of gear wheel, be specifically related to a kind of welder and welding method thereof of three layers of disc gear wheel.
[background technology]
Known, conventional gear mostly is casting and forges structure, and the major defect of this structure is exactly the production cost height, processing capacity is large, so the gear of this structure is only applicable to the processing of miniature gear, and just can not only depend on a cover casting forging technology to satisfy its designing requirement for some large-scale gears " be the gear of Φ 4145 such as diameter ", those skilled in the art are in order to satisfy the processing to large-scale gear at present, usually it is larger to adopt the technology of welding to obtain diameter, the gear that gearratio is larger, thereby save material and production cost, but the gear of welding is to belong to the dissimilar steel welding, and mother metal phosphorus content and alloying element are higher, therefore in welding process, very easily cause the weldability of gear poor, tendency of hardenability is large, constraint stress on the gear weld seam circumference is large simultaneously, and then cause producing in the weld seam cold crack, because large gear generally all is three layers of web pattern, the control of its welding deformation and welding quality all has very large difficulty, wherein gear ring inner circle postwelding can't be processed, if circularity over tolerance is larger, the gear ring wall unevenness is even behind the Excircle machining, uneven in the time of then can causing the gear operation, therefore large gear must adopt rational welder and welding method to control gear wheel circularity adding man-hour, makes it reach the design and use requirement.
[summary of the invention]
For overcoming the deficiency that exists in the background technology, the invention provides a kind of welder and welding method thereof of gear wheel, the present invention is by utilizing manipulator Lincoln weld built-up welding to go out the built-up welding transition zone, greatly reduce labour intensity, improve welding quality, wherein the built-up welding transition zone has reduced the carbon equivalent of welding region, the plasticity and toughness of corresponding circle of sensation have been improved, discharged simultaneously radial stress, crack when preventing from welding disc, because gear constantly rotates, only need the heater of 1/3 circumference during preheating simultaneously when welding, needn't adopt in order to control distortion the heater of full circle, greatly improved working environment, reduced labour intensity, because weld seam is before heat treatment, after 100% nondestructive inspection all be once qualified, avoid the part to reprocess and cause welding deformation.
For realizing aforesaid goal of the invention, the present invention adopts technical scheme as described below:
A kind of welder of gear wheel, comprise welding positioner and antifleeing mechanism, described welding positioner is rectangle structure, two ends at the welding positioner are respectively equipped with the square boss that raises up, middle part in each boss upper side is respectively equipped with rolling element, top at two rolling elements is provided with external toothing, the end face of described external toothing both sides connects respectively the gear wheel in the antifleeing mechanism, gear wheel in the described antifleeing mechanism is at least three, described each gear wheel is movably arranged between two gripper shoes by pin, described two gripper shoes are fixed on the upper side of base plate, described each base plate is separately fixed at the upper end of supporter A and supporter B, and the upper side that the lower end of described supporter A and supporter B tilts to be fixed on base forms the welder of described gear wheel.
The welder of described gear wheel, the two ends of described gear wheel middle part endoporus are respectively equipped with bearing, and the inner ring of described bearing is socketed on the outer edge surface of pin.
The welder of described gear wheel, described supporter A is set to two, connects by translot steel A in the upper end of two supporter A.
The welder of described gear wheel, described translot steel A replaces with round steel or square steel or I-steel.
The welder of described gear wheel, described supporter B is set to two, connects by translot steel B in the upper end of two supporter B.
The welder of described gear wheel, described translot steel B replaces with round steel or square steel or I-steel.
The welder of described gear wheel, described supporter A are connected the upper end by the connection of vertical slot steel with supporter B.
The welder of described gear wheel, described vertical slot steel replaces with round steel or square steel or I-steel.
A kind of welding method of gear wheel, described welding method comprises the steps:
The first step, built-up welding built-up welding transition zone:
1), at first processes K type groove at the outer edge surface of middle interradial plate and ring gear, inner edge surface at external toothing processes K type groove, process single double V-groove at the outer edge surface of two disc up and down, further process the built-up welding groove in the position of every layer of disc of external toothing inner headed face, then external toothing is placed on the top of welding positioner, guarantee that external toothing can rotate at the welding positioner, further use manipulator Lincoln weld built-up welding built-up welding transition zone, will carry out continuous heating to external toothing when built-up welding, interlayer temperature is controlled at 250～350 ℃;
2), because the wide and high ratio of external toothing is too little, when external toothing rotates at the welding positioner, in order to prevent security incident, both sides at external toothing arrange antifleeing mechanism, and antifleeing mechanism can prevent effectively that external toothing from play occuring and topple over, and has guaranteed safety in production when welding, in actual mechanical process, gear wheel in one of them antifleeing mechanism rotates with external toothing, and another antifleeing mechanism and external toothing then keep the gap about 5～15mm, guarantees that external toothing can rotate smoothly;
3), processing built-up welding transition zone, namely machining is carried out on the surface of built-up welding transition zone, carry out after the assay was approved next step operation;
Second step, the welding disc:
1) disc in the middle of, at first welding, when welding middle disc, at first operating personnel need to install conducting rod in the conductive mechanism of manipulator head;
2), middle interradial plate and external toothing and ring gear spot welding fixedly are placed on the upper side of plane positioner, guarantee that gear centre is concentric with the plane positioner, and gear is fixed on the positioner of plane with fixed head;
3), will begin behind the gear centering welding, weld first the circumferential weld of ring gear 1 and disc during welding, the circumferential weld of the full disc of weldering and external toothing again after the groove welding of circumferential weld is full;
4), with the gear turn-over, with work step 3) welding sequence welding another side ring gear and the circumferential weld between external toothing and the disc;
Welding material is selected H08MnA+HJ431 when 5), welding, gage of wire is Φ 4, and preheat temperature is 100 ℃, adopts the steel pipe of 1/3 gear ring circumference every the hole of boring a Φ about 5 about 200mm during preheating, make heater behind the hot song, described heater connects heating source;
6), in when welding, at first carry out bottoming, the welding method during bottoming is submerged-arc welding, Current Control is in 400～550 peaces, Control of Voltage is at 27～28 volts, the electric current kind is selected DCEP, speed of welding is controlled at 300～350mm/min, heat input≤30KJ/cm; Further butt welded seam is filled, and the welding method during filling is submerged-arc welding, and Current Control is in 500～650 peaces, and Control of Voltage is at 27～30 volts, and the electric current kind is selected DCEP, and speed of welding is controlled at 280～320mm/min, heat input≤39KJ/cm; Last butt welded seam carries out capping, and the welding method during capping is submerged-arc welding, and Current Control is in 500～600 peaces, and Control of Voltage is at 27～30 volts, and the electric current kind is selected DCEP, and speed of welding is controlled at 280～320mm/min, heat input≤39KJ/cm;
7), remove conducting rod, the conductive mechanism of utilizing the manipulator head welds gear two disc up and down, welding method is the same, has namely finished once the welding process to gear after to be welded the finishing.
The welding method of described gear wheel, described conducting rod is at least two joints, described per two joint conducting rods are connected together by internal thread and the external thread wire that the end arranges respectively, are provided with the endoporus of perforation at the middle part of conducting rod.
Adopt aforesaid technical scheme, the present invention has superiority as described below:
The welder of a kind of gear wheel of the present invention and welding method thereof, the present invention utilizes manipulator Lincoln weld built-up welding to go out the built-up welding transition zone, greatly reduce workman's labour intensity, improved welding quality, simultaneously built-up welding transition zone can reduce the carbon equivalent of welding region greatly, improve the plasticity and toughness of corresponding circle of sensation, further discharge stress radially, prevented from when the welding disc, cracking, further the present invention is implemented in the circumferential welded seam that adopts interradial plate in the manipulator Lincoln weld welded gear on the positioner of plane by conducting rod, replaced traditional submerged arc welding carriage welding, make welding process more stable, pre-heating mean is simpler, because gear wheel constantly rotates on the positioner of plane, preheating only needs the heater of 1/3 circumference, needn't adopt in order to control distortion the heater of full circle, improve working environment, reduced labour intensity, because weld seam is before heat treatment, after 100% nondestructive inspection all be once qualified, so welding deformation of avoiding the part to reprocess causing, the present invention is simple in structure, easy to operate suitable large-scale promotion and application.
[description of drawings]
Fig. 1 is welding process schematic diagram of the present invention;
Fig. 2 is antifleeing mechanism structural representation among the present invention;
Fig. 3 is the structural representation of conducting rod among the present invention;
Fig. 4 is the structural representation of gear wheel among the present invention;
In the drawings: 1, ring gear; 2, external toothing; 3, disc; 4, heater; 5, plane positioner; 6, wire reel; 7, conducting rod; 8, built-up welding transition zone; 9, manipulator; 10, gear wheel; 11, vertical slot steel; 12, supporter A; 13, supporter B; 14, welding positioner; 15, base; 16, internal thread; 17, external screw thread; 18, endoporus; 19, base plate; 20, pin; 21, gripper shoe.
[specific embodiment]
Can explain in more detail the present invention by the following examples, the present invention is not limited to the following examples;
The welder of 2 and 4 described a kind of gear wheels by reference to the accompanying drawings, comprise welding positioner 14 and antifleeing mechanism, described welding positioner 14 is rectangle structure, two ends at welding positioner 14 are respectively equipped with the square boss that raises up, be respectively equipped with the rolling element that rolls for external toothing 2 at the middle part of each boss upper side, be provided with external toothing 2 on the top of two rolling elements, the end face of described external toothing 2 both sides connects respectively the gear wheel 10 in the antifleeing mechanism, gear wheel 10 in the described antifleeing mechanism is at least three, wherein be preferably four, described each gear wheel 10 is movably arranged between two gripper shoes 21 by pin 20, or be respectively equipped with bearing at the two ends of described gear wheel 10 middle part endoporus, the inner ring of described bearing is socketed on the outer edge surface of pin 20, described two gripper shoes 21 are fixed on the upper side of base plate 19, described each base plate 19 is separately fixed at the upper end of supporter A12 and supporter B13, and the upper side that the lower end of described supporter A12 and supporter B13 tilts to be fixed on base 15 forms the welder of described gear wheel.
The welder of described gear wheel, described supporter A12 is set to two, connects by translot steel A in the upper end of two supporter A12, and described translot steel A replaces with round steel or square steel or I-steel.
The welder of described gear wheel, described supporter B13 is set to two, connects by translot steel B in the upper end of two supporter B13, and described translot steel B replaces with round steel or square steel or I-steel.
The welder of described gear wheel, described supporter A12 are connected the upper end by 11 connections of vertical slot steel with supporter B13, described vertical slot steel 11 replaces with round steel or square steel or I-steel.
The welding method of 1 and 3 described a kind of gear wheels by reference to the accompanying drawings, described welding method comprises the steps:
The first step, built-up welding built-up welding transition zone 8:
1), at first the outer edge surface at middle interradial plate 3 and ring gear 1 processes K type groove, inner edge surface at external toothing 2 processes K type groove, process single double V-groove at the outer edge surface of two disc 3 up and down, further process the built-up welding groove in the position of every layer of disc of external toothing 2 inner headed faces 3, then external toothing 2 is placed on the top of welding positioner 14, guarantee that external toothing 2 can rotate at welding positioner 14, further use manipulator Lincoln weld built-up welding built-up welding transition zone 8, will carry out continuous heating to external toothing 2 when built-up welding, interlayer temperature is controlled at 250～350 ℃;
2), because the wide and high ratio of external toothing 2 is too little, when external toothing 2 rotates at welding positioner 14, in order to prevent security incident, both sides at external toothing 2 arrange antifleeing mechanism, antifleeing mechanism can prevent effectively that external toothing 2 from play occuring and topple over when welding, guaranteed safety in production, in actual mechanical process, gear wheel 10 in one of them antifleeing mechanism rotates with external toothing 2,2 gaps that keep about 5～15mm of another antifleeing mechanism and external toothing guarantee that external toothing 2 can rotate smoothly;
3), processing built-up welding transition zone 8, namely machining is carried out on the surface of built-up welding transition zone 8, carry out after the assay was approved next step operation;
Second step, welding disc 3:
1) disc 3 in the middle of, at first welding, when welding middle disc 3, at first operating personnel need to install conducting rod 7 in the conductive mechanism of manipulator 9 heads;
2), middle interradial plate 3 and external toothing 2 and ring gear 1 spot welding fixedly are placed on the upper side of plane positioner 5, guarantee that gear centre is concentric with plane positioner 5, and gear is fixed on the plane positioner 5 with fixed head;
3), will begin behind the gear centering welding, weld first the circumferential weld of ring gear 1 and disc 3 during welding, the circumferential weld of the full disc 3 of weldering and external toothing 2 again after the groove welding of circumferential weld is full;
4), with the gear turn-over, with work step 3) welding sequence welding another side ring gear 1 and the circumferential weld between external toothing 2 and the disc 3;
Welding material is selected H08MnA+HJ431 when 5), welding, gage of wire is Φ 4, and preheat temperature is 100 ℃, adopts the steel pipe of 1/3 external toothing circumference every the hole of boring a Φ about 5 about 200mm during preheating, make heater 4 behind the hot song, described heater 4 connects heating source;
6), in when welding, at first carry out bottoming, the welding method during bottoming is submerged-arc welding, Current Control is in 400～550 peaces, Control of Voltage is at 27～28 volts, the electric current kind is selected DCEP, speed of welding is controlled at 300～350mm/min, heat input≤30KJ/cm; Further butt welded seam is filled, and the welding method during filling is submerged-arc welding, and Current Control is in 500～650 peaces, and Control of Voltage is at 27～30 volts, and the electric current kind is selected DCEP, and speed of welding is controlled at 280～320mm/min, heat input≤39KJ/cm; Last butt welded seam carries out capping, and the welding method during capping is submerged-arc welding, and Current Control is in 500～600 peaces, and Control of Voltage is at 27～30 volts, and the electric current kind is selected DCEP, and speed of welding is controlled at 280～320mm/min, heat input≤39KJ/cm;
7), remove conducting rod 7, the conductive mechanism of utilizing manipulator 9 heads welds gear two disc 3 up and down, welding method is the same, has namely finished once the welding process to gear after to be welded the finishing.
The welding method of described gear wheel, described conducting rod 7 is at least two joints, described per two joint conducting rods 7 are connected together by internal thread 16 and 17 of the external screw threads that the end arranges respectively, are provided with the endoporus 18 of perforation at the middle part of conducting rod 7.
Now the present invention is made concrete elaboration in conjunction with specific product:
The gear shape that wherein needs to weld is of a size of 1270X Φ 4145, three layers of web pattern, the material of external toothing 2 is 30CrNiMo8, the material of ring gear 1 is 34CrMo4, the material of disc 3 is S355JR, thickness is 60mm, and middle interradial plate 3 is " K " type groove with the groove of ring gear 1 and external toothing 2, and outer adradialia 3 grooves are single " V " type groove;
1, built-up welding built-up welding transition zone 8, improve its performance:
1. process the built-up welding groove of dark 25x wide 75 in every layer of disc of external toothing 2 inner circles 3 positions, the built-up welding groove can reduce the built-up welding difficulty, guarantee surfacing quality, the soft transition zone of built-up welding can reduce the carbon equivalent of welding region, improve the plasticity and toughness of corresponding circle of sensation, can discharge radial stress, crack when preventing from welding disc, owing to want continuous heating during built-up welding, interlayer temperature reaches 250～350 ℃, the operating environment very severe, and we adopt manipulator Lincoln weld built-up welding built-up welding transition zone 8, reduce labour intensity and operation easier, and improved welding quality;
2. because the wide and high ratio of external toothing 2 is too little, rotate at welding positioner 14, safety coefficient is very low, needs to increase antifleeing mechanism, prevent that external toothing 2 from the play sense occuring and toppled in when welding, ensure safety in production, wherein antifleeing mechanism is formed by the channel-section steel assembly welding, and both sides are four gear wheels 10 of welding equipment respectively, prevent external toothing 2 plaies, one lateral part wheel 10 rotates with external toothing 2, and opposite side keeps gap, the 10mm left and right sides, guarantees that external toothing 2 can rotate smoothly;
3. process transition zone, after the built-up welding groove piles with, machining is carried out on the overlay cladding surface, roughness and circularity reach after the designing requirement could welding equipment disc 3;
2, welding disc 3:
1. since middle interradial plate 3 apart from gear wheel end face 625mm, the head conductive mechanism can't directly be welded, with reference to relevant criterion, we are with conducting rod two sections making in 7 minutes, intermediate thread connects, reach length requirement, simultaneously conducting rod 7 is installed on the conductive mechanism, the welding wire that will coil simultaneously on wire reel 6 connects conducting rod;
2. middle interradial plate 3 fixedly is placed on the plane positioner 5 with external toothing 2 and ring gear 1 spot welding, guarantees that gear centre is concentric with plane positioner 5, and 5 gears are fixed on the plane positioner 5 with fixed head;
3. begin behind the gear centering to weld, weld first the circumferential weld (inner circle circumferential weld) of ring gear 1 and disc 3 during welding, weld again the circumferential weld (cylindrical circumferential weld) of full disc 3 and external toothing 2 after the groove welding of internal circular seam is full;
4. gear is turned over individual, the same inside and outside circumferential weld of welding sequence welding disc 3 another sides;
5. welding material H08MnA+HJ431, gage of wire Φ 4,100 ℃ of preheatings adopt the steel pipe of 1/3 external toothing, 2 circumferences to bore Φ 5 holes every 200mm, make heater 4 behind the hot song, and described heater 4 is communicated with thermals source;
6. welding parameter such as following table:
| Welding bead | Welding method | Fill metal dimension | Electric current(A) | Voltage（V） | The electric current kind | Speed of welding（mm/min） | The heat input （KJ/cm） |
| Bottoming | Submerged-arc welding | φ4 | 400-550 | 27-28 | DCEP | 300-350 | ≤30 |
| Fill | Submerged-arc welding | φ4 | 500-650 | 27-30 | DCEP | 280-320 | ≤39 |
| Capping | Submerged-arc welding | φ4 | 500-600 | 27-30 | DCEP | 280-320 | ≤39 |
7. two disc in the outside 3 adopt standard conductive mechanism can finish welding (namely removing conducting rod 7), and welding method is the same.
Part not in the detailed description of the invention is prior art.
The embodiment that selects in this article in order to disclose purpose of the present invention currently thinks to suit, and still, will be appreciated that the present invention is intended to comprise that all belong to all changes and the improvement of the embodiment in this design and the invention scope.
Claims (10)
1. the welder of a gear wheel, comprise welding positioner (14) and antifleeing mechanism, described welding positioner (14) is rectangle structure, two ends at welding positioner (14) are respectively equipped with the square boss that raises up, middle part in each boss upper side is respectively equipped with rolling element, be provided with external toothing (2) on the top of two rolling elements, it is characterized in that: the end face of described external toothing (2) both sides connects respectively the gear wheel (10) in the antifleeing mechanism, gear wheel in the described antifleeing mechanism (10) is at least three, described each gear wheel (10) is movably arranged between two gripper shoes (21) by pin (20), described two gripper shoes (21) are fixed on the upper side of base plate (19), described each base plate (19) is separately fixed at supporter A(12) and supporter B(13) the upper end, described supporter A(12) and supporter B(13) the lower end upper side that tilts to be fixed on base (15) form the welder of described gear wheel.
2. the welder of gear wheel according to claim 1 is characterized in that: the two ends of described gear wheel (10) middle part endoporus are respectively equipped with bearing, and the inner ring of described bearing is socketed on the outer edge surface of pin (20).
3. the welder of gear wheel according to claim 1 is characterized in that: described supporter A(12) be set to two, at two supporter A(12) the upper end connect by translot steel A.
4. the welder of gear wheel according to claim 3, it is characterized in that: described translot steel A replaces with round steel or square steel or I-steel.
5. the welder of gear wheel according to claim 1 is characterized in that: described supporter B(13) be set to two, at two supporter B(13) the upper end connect by translot steel B.
6. the welder of gear wheel according to claim 5, it is characterized in that: described translot steel B replaces with round steel or square steel or I-steel.
7. the welder of gear wheel according to claim 1 is characterized in that: the upper end of described supporter A(12) being connected with supporter B(13 connects by vertical slot steel (11).
8. the welder of gear wheel according to claim 7, it is characterized in that: described vertical slot steel (11) replaces with round steel or square steel or I-steel.
9. implement a kind of welding method of gear wheel of the welder of the described a kind of gear wheel of the arbitrary claim of claim 1～8, it is characterized in that: described welding method comprises the steps:
The first step, built-up welding built-up welding transition zone (8):
1), at first the outer edge surface at middle interradial plate (3) and ring gear (1) processes K type groove, inner edge surface at external toothing (2) processes K type groove, process single double V-groove at the outer edge surface of two disc (3) up and down, further process the built-up welding groove in the position of every layer of disc of external toothing (2) inner headed face (3), then external toothing (2) is placed on the top of welding positioner (14), guarantee that external toothing (2) can rotate at welding positioner (14), further use manipulator Lincoln weld built-up welding to go out built-up welding transition zone (8), will carry out continuous heating to external toothing (2) when built-up welding, interlayer temperature is controlled at 250～350 ℃;
2), because the wide and high ratio of external toothing (2) is too little, when external toothing (2) rotates at welding positioner (14), in order to prevent security incident, both sides at external toothing (2) arrange antifleeing mechanism, antifleeing mechanism can prevent effectively that external toothing (2) from play occuring and topple over when welding, guaranteed safety in production, in actual mechanical process, gear wheel in one of them antifleeing mechanism (10) rotates with external toothing (2), another antifleeing mechanism and external toothing (2) then keep the gap about 5～15mm, guarantee that external toothing (2) can rotate smoothly;
3), processing built-up welding transition zone (8), namely machining is carried out on the surface of built-up welding transition zone (8), carry out after the assay was approved next step operation;
Second step, welding disc (3):
1) disc (3) in the middle of, at first welding, when welding middle disc (3), at first operating personnel need to install conducting rod (7) in the conductive mechanism of manipulator (9) head;
2), middle interradial plate (3) and external toothing (2) and ring gear (1) spot welding fixedly are placed on the upper side of plane positioner (5), guarantee that gear centre is concentric with plane positioner (5), and gear is fixed on the plane positioner (5) with fixed head;
3), will begin behind the gear centering welding, weld first the circumferential weld of ring gear (1) and disc (3) during welding, the circumferential weld of the full disc (3) of weldering and external toothing (2) again after the groove welding of circumferential weld is full;
4), with the gear turn-over, with work step 3) welding sequence welding another side ring gear (1) and the circumferential weld between external toothing (2) and the disc (3);
Welding material is selected H08MnA+HJ431 when 5), welding, gage of wire is Φ 4, preheat temperature is 100 ℃, adopt the steel pipe of 1/3 external toothing (2) circumference every the hole of boring a Φ about 5 about 200mm during preheating, make heater (4) behind the hot song, described heater (4) connects heating source;
6), in when welding, at first carry out bottoming, the welding method during bottoming is submerged-arc welding, Current Control is in 400～550 peaces, Control of Voltage is at 27～28 volts, the electric current kind is selected DCEP, speed of welding is controlled at 300～350mm/min, heat input≤30KJ/cm; Further butt welded seam is filled, and the welding method during filling is submerged-arc welding, and Current Control is in 500～650 peaces, and Control of Voltage is at 27～30 volts, and the electric current kind is selected DCEP, and speed of welding is controlled at 280～320mm/min, heat input≤39KJ/cm; Last butt welded seam carries out capping, and the welding method during capping is submerged-arc welding, and Current Control is in 500～600 peaces, and Control of Voltage is at 27～30 volts, and the electric current kind is selected DCEP, and speed of welding is controlled at 280～320mm/min, heat input≤39KJ/cm;
7), remove conducting rod (7), the conductive mechanism of utilizing manipulator (9) head welds gear two disc (3) up and down, welding method is the same, has namely finished once the welding process to gear after to be welded the finishing.
10. the welding method of gear wheel according to claim 9, it is characterized in that: described conducting rod (7) is at least two joints, described per two joint conducting rods (7) are connected together by internal thread (16) and external screw thread (17) silk that the end arranges respectively, are provided with the endoporus (18) of perforation at the middle part of conducting rod (7).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104923889A (en) * | 2015-07-02 | 2015-09-23 | 重庆齿轮箱有限责任公司 | Assembly welding method of welded gear |
| CN112705867A (en) * | 2019-10-24 | 2021-04-27 | 青岛九合重工机械有限公司 | Method for welding T-shaped joint of pump truck |
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| CN201573028U (en) * | 2009-12-23 | 2010-09-08 | 中国有色（沈阳）冶金机械有限公司 | Bevel catch wheel device for welding of cylinder bodies |
| CN102009317A (en) * | 2010-05-31 | 2011-04-13 | 无锡恒富科技有限公司 | Moving-prevention structure of welding roller frame |
| CN101913013A (en) * | 2010-08-18 | 2010-12-15 | 中信重工机械股份有限公司 | Process for assembling and welding middle-hard teeth surface welded gear |
| CN203091942U (en) * | 2012-12-26 | 2013-07-31 | 中信重工机械股份有限公司 | Welding set for large gear |
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| CN104923889A (en) * | 2015-07-02 | 2015-09-23 | 重庆齿轮箱有限责任公司 | Assembly welding method of welded gear |
| CN112705867A (en) * | 2019-10-24 | 2021-04-27 | 青岛九合重工机械有限公司 | Method for welding T-shaped joint of pump truck |
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Application publication date: 20130424 |