CN113134666A - Plane and vertical face circumferential submerged arc surfacing non-standard equipment and surfacing process method - Google Patents
Plane and vertical face circumferential submerged arc surfacing non-standard equipment and surfacing process method Download PDFInfo
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- CN113134666A CN113134666A CN202110456508.2A CN202110456508A CN113134666A CN 113134666 A CN113134666 A CN 113134666A CN 202110456508 A CN202110456508 A CN 202110456508A CN 113134666 A CN113134666 A CN 113134666A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a plane and vertical face circumferential submerged arc surfacing non-standard device and a surfacing process method. The center post mandrel is supported by a bearing seat fixed with a base to rotate, a variable frequency motor is fixed on the base through a motor support, power is transmitted to the center post mandrel through a gear transmission case and an RV reducer, the circumferential rotation linear speed of a cross beam at different welding speeds is covered by the variable frequency motor, a welding equipment power source is led to the brush position of a collecting ring through a towline groove and a wire harness, the equipment is fixed on a platform in the middle of a water guide component to be subjected to surfacing welding, the center of a circle and the level are adjusted according to the rough machining surface of the water guide component, a supporting wheel is arranged at the far end of the cross beam, the cross beam and the welding equipment are driven to rotate circumferentially through the power of the supporting wheel, and submerged arc welding equipment is connected to the far end of the cross beam through a fixed hanging arm of the welding equipment, so that the mechanical connection and the electrical connection between the welding equipment are realized, and the circumferential rotation of the welding equipment is driven. Thereby realizing the automatic submerged-arc automatic surfacing circumferential continuous welding of the wear-resistant and corrosion-resistant stainless steel of the plane and the vertical surface of the water guide component.
Description
Technical Field
The invention relates to the field of automatic surfacing, in particular to a plane and vertical surface circumferential submerged arc surfacing non-standard device and a surfacing process method.
Background
In order to obtain excellent wear-resisting and corrosion-resisting properties, stainless steel surfacing welding technology is often adopted on the metal surfaces of the matching parts of the top cover, the bottom ring and other water guide components of the pumped storage unit and the runner and the contact parts of the water guide components and the guide vane end parts, and the traditional manual GMAW consumable electrode gas shielded welding method is adopted to realize poor surfacing welding quality and low efficiency.
The stainless steel built-up welding method adopting manual GMAW consumable electrode gas shielded welding has the following defects:
1) the surfacing layer has more internal defects exposed in the next processing process due to the problems of inter-channel cleaning, gas protection effect, manual operation and the like, mainly shows the defects of air holes, inter-channel inclusions, incomplete penetration, transverse cracks and the like, and is easy to repeat in the repairing process, thereby influencing the punctual production of parts.
2) The fusion ratio of the priming layer and the base material metal is larger, the chemical composition and the metallographic structure of the interface of the heat affected zone are complex, and the welding hot crack defect is easy to generate.
3) The repair of defects of the overlay layer exposed after the part is subjected to finish machining can affect the machining size of the part, and great quality risks exist.
4) For a welding structure with large surfacing quantity, manual surfacing efficiency is low, and the application efficiency of the much welding structure is higher.
From the above points, it can be seen that from the two aspects of stainless steel surfacing efficiency and quality, it is necessary to optimize and innovate surfacing equipment and surfacing process.
Disclosure of Invention
In view of the above, the invention realizes the circumferential continuous welding of the energy storage project water guide component plane and vertical face wear-resistant corrosion-resistant stainless steel submerged arc automatic surfacing by adopting the plane and vertical face circumferential submerged arc surfacing non-standard equipment and the surfacing process method, and further improves the surfacing efficiency and quality. The purpose of the invention is realized by the following technical scheme:
the submerged arc surfacing non-standard equipment consists of six parts, namely a central column mechanism, an operating arm mechanism, a counterweight mechanism, a variable frequency speed reduction control mechanism, an electric transmission mechanism and a welding equipment connection adjusting mechanism.
The submerged arc welding equipment is connected to the welding equipment connection adjusting mechanism; the welding equipment is connected with the adjusting mechanism and is fixed with the remote handle of the operating arm mechanism; the submerged arc welding equipment is connected with an external power supply and a variable-frequency speed reduction control mechanism through an electric transmission mechanism; the electric transmission mechanism is arranged inside the central column mechanism; the variable-frequency speed reduction control mechanism is fixed on a bearing seat and a base of the central column mechanism; the counterweight mechanism and the cantilever support of the central column mechanism are welded into a whole; the central column mechanism is in interference fit with the operating arm mechanism through a cantilever support of the central column mechanism and drives the operating arm mechanism, the counterweight mechanism, the welding equipment connection adjusting mechanism and the submerged arc welding equipment to perform circumferential rotation welding, and the rotating speed is adjusted through the variable-frequency speed reduction control mechanism.
In the plane and vertical face circumferential submerged arc surfacing non-standard equipment, the central column mechanism consists of a wire groove supporting plate, a lifting motor, a lead screw fixing plate, an anti-rotation key, a central column mandrel, a wiring groove, a cantilever support, a lead screw nut, a bearing seat, a tapered roller bearing, a protective baffle, a base, a handle bolt, a jackscrew adjusting window and a centering device, wherein the base is arranged in the middle of a water guide component to be surfaced; the aligning device is arranged on the base bottom plate, and the aligning device and the base bottom plate are tightly clamped by a fixing bolt; the central column mandrel is arranged on the base; the bearing seat is connected with the base through a handle bolt; the outer shaft diameter of the central column mandrel is matched with the inner holes of the tapered roller bearings at the upper and lower ends in the bearing seat; the cantilever support is of a two-piece handle structure, the inner diameter of the cantilever support is matched with the outer diameter of the central column mandrel, and the cantilever support is in interference fit with the central column mandrel after being tightened; the lead screw is fixed on the central column mandrel through a lead screw fixing plate; the lifting motor is fixedly arranged on the screw rod fixing plate; the lead screw is connected with the cantilever support through a lead screw nut; the power line and the control line of the welding equipment are arranged in a central column mandrel of the central column mechanism, a wiring groove and a towline groove of the operating arm mechanism; and the central column mandrel is supported to rotate by utilizing a bearing seat fixed with the base.
In the plane and vertical face circumferential submerged arc surfacing non-standard equipment, the operating arm mechanism consists of a cross beam, a towline slot and an extension arm, and one end of the cross beam is connected with a cantilever support bolt of the central column mechanism; the other end is connected with the extension arm through a bolt; the towline slot is connected with a wire harness of the electric transmission mechanism; the beam drives the submerged arc welding equipment to rotate; the linear speed coverage range is 100 mm/Min-400 mm/Min; the beam drives the submerged arc welding equipment to rotate within the radius range of R1500 mm-R3500 mm by increasing or decreasing the balance weight of the balance weight arm and disassembling or assembling the extension arm.
In the plane and vertical face circumferential submerged arc surfacing non-standard equipment, the counterweight mechanism consists of a counterweight arm, a counterweight block and a locking device, and the counterweight arm is welded with a cantilever support of the central column mechanism; the counterweight block and the locking device are fixed at the far end of the counterweight arm.
In the plane and vertical face circumferential submerged arc surfacing non-standard equipment, the variable-frequency speed reduction control mechanism consists of an electric cabinet, a gear transmission case, an RV speed reducer and a variable-frequency motor, wherein the electric cabinet is fixed on a bearing seat of the central column mechanism, and a welding equipment control line is led out from the electric cabinet; the variable frequency motor is fixed on a base of the central column mechanism through a motor support, and power is transmitted to a central column mandrel of the central column mechanism through a gear transmission and an RV reducer; the gear transmission, the RV reducer and the variable frequency motor are arranged in a protective baffle plate and a base of the central column mechanism; mechanically speed-changing through a gear gearbox and an RV reducer, and further electrically speed-changing through a variable frequency motor and a frequency converter; the frequency conversion frequency of the variable frequency motor of the submerged arc surfacing non-standard equipment is limited within 50Hz during welding operation.
In the plane and vertical face circumferential submerged arc surfacing non-standard equipment, the electric transmission mechanism consists of a wire harness, a collecting ring electric brush and a brush holder, and the wire harness, the collecting ring electric brush and the brush holder are arranged in a protective baffle and a base of the central column mechanism; one end of the collecting ring electric brush is connected with an external power supply, and the other end of the collecting ring electric brush is connected with the wiring harness; the power supply of the welding equipment is led to the electric brush of the collecting ring through a towline slot and a wire harness of the operating arm mechanism; leading out a power line of the submerged arc welding equipment from the brush holder; the electric connection between an external power supply of the welding equipment and the wire harness adopts a collecting ring electric brush wireless rotary connection structure; the maximum current which can be carried by the wire harness and the collecting ring electric brush during welding operation is not less than 1250A, and the withstand voltage is more than 110V.
In the plane and vertical face circumferential submerged arc surfacing non-standard equipment, the welding equipment connection adjusting mechanism consists of a linear guide rail, a supporting wheel adjusting mechanism, a welding equipment fixing hanging arm, a supporting wheel, a rack, a hand wheel and a radial adjusting device, and the welding equipment fixing hanging arm is mechanically connected with the welding equipment; the welding equipment fixing hanging arm is matched with the hand-operated wheel rack, and the radial positions of the welding equipment fixing hanging arm and the welding equipment are adjusted on the linear guide rail; the supporting wheel adjusting mechanism is matched with the supporting wheel rack; adjusting the elevation of the supporting wheel through the rack; the radial position of the welding device is adjusted by a radial adjusting device.
The invention also provides a surfacing process method of the plane and vertical face circumferential submerged arc surfacing non-standard equipment, which uses the plane and vertical face circumferential submerged arc surfacing non-standard equipment and comprises the following steps:
step 1: preparing before welding, namely connecting a submerged arc welding device to the far end of a beam of a submerged arc surfacing non-standard device through a welding device fixing hanging arm, fixing the submerged arc surfacing non-standard device in the middle of a water guide component to be surfaced, adjusting the circle center and the level according to the rough machining surface of the water guide component, and enabling a supporting wheel to be in contact with the rough machining surface of the water guide component to be surfaced;
step 2: and (4) formally welding, wherein the non-standard submerged arc surfacing equipment drives the cross beam, the extension arm, the fixed hanging arm of the welding equipment and the welding equipment to perform circumferential automatic surfacing through the power of the supporting wheel.
In the above-mentioned plane and elevation circumferential submerged arc surfacing process method, a "strip electrode" submerged arc welding material is firstly used for surfacing a transition layer of austenite plus 10% -15% ferrite welding material, and then a "filament electrode" submerged arc welding material is used for filling and surfacing.
In the plane and vertical face circumferential submerged arc surfacing welding process method, a secondary annealing heat treatment process is added after surfacing of the martensitic stainless steel welding material with the requirement on wear resistance.
Technical effects
1) Through the cooperation of the submerged arc surfacing non-standard equipment and the submerged arc welding equipment, the circumferential continuous welding of the automatic submerged arc surfacing of the wear-resistant and corrosion-resistant stainless steel for the plane and the vertical surface of the water guide component of the energy storage project is realized, and compared with a GMAW method, the surfacing efficiency is at least doubled.
2) By arranging the supporting wheel with power below the far end of the beam of the submerged arc surfacing non-standard equipment, the self deflection of the beam in the surfacing process when the rotating radius is larger is reduced, the equipment rigidity and stability of the welding equipment during circumferential advancing are improved, and the surfacing quality is ensured.
3) The submerged arc surfacing non-standard equipment can directly bear the welding current of the submerged arc welding equipment by adopting the collecting ring electric brush, can realize wireless rotation, solves the problem that a power line and a control line of the welding equipment and the submerged arc surfacing non-standard equipment are wound to rotate forwards and backwards in the rotating process of the central column core shaft, and ensures the continuity of circumferential welding.
4) By adopting a submerged arc automatic surfacing welding process method to replace a manual GMAW consumable electrode gas shielded welding method, molten pool slag protection is realized, and the quality of a surfacing layer is improved. Meanwhile, the welding current is increased by more than 2 times, and the welding deposition efficiency of the welding material is further improved.
5) For the vertical surface overlaying part of the part, the welding flux retainer ring tool is arranged on the inner circle, so that the automatic submerged arc overlaying at the vertical surface transverse welding position is realized, and the limitation that the submerged arc welding method is only suitable for the flat welding position is solved.
6) By adding a transition layer of austenite plus 10% -15% ferrite welding material, the columnar crystal of coarse austenite is cut off, and the sensitivity of hot crack of the structure of a build-up welding heat affected zone is reduced.
7) The transition layer is built up by adopting a 'strip pole' submerged arc welding method, so that the fusion ratio with the base metal is reduced, the chemical components and the metallographic structure of the interface of the heat affected zone are improved, and the sensitivity of the hot cracks of the built-up heat affected zone is reduced.
8) The secondary annealing heat treatment process is added after the surfacing of the martensitic stainless steel welding material with the requirement on wear resistance, so that the residual stress of the surfacing metal can be reduced, the size and the quality can be stabilized, the hardness of a surfacing layer can be reduced, and favorable conditions are created for the subsequent processing.
Drawings
FIG. 1 is a schematic diagram of a submerged arc surfacing non-standard equipment structure.
Fig. 2 is a schematic view of the matching of the bearing and the central column mandrel.
FIG. 3 is a schematic view of "strip" submerged arc weld deposit.
FIG. 4 is a schematic view of "filament" submerged arc and submerged arc weld deposit.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are simply used for convenience of description of the present invention, and do not indicate or imply that the devices or components referred to must have specific orientations, be constructed and operated in specific orientations, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1 and 2, the submerged arc surfacing non-standard equipment consists of a central column mechanism 43, an operating arm mechanism 44, a counterweight mechanism 45, a variable frequency speed reduction control mechanism 46, an electric transmission mechanism 47 and a welding equipment connection adjusting mechanism 48, wherein the submerged arc welding equipment is connected to the welding equipment connection adjusting mechanism 48; the welding equipment is connected with the adjusting mechanism 48 and fixed with the far end handle of the operating arm mechanism 44; the submerged arc welding equipment is connected with an external power supply and a variable-frequency speed reduction control mechanism 46 through an electric transmission mechanism 47; the electric transmission mechanism 47 is arranged inside the center post mechanism 43; the variable-frequency speed reduction control mechanism 46 is fixed on the bearing seat 12 and the base 18 of the central column mechanism 43; the counterweight mechanism 45 and the cantilever support 6 of the central column mechanism 43 are welded into a whole; the central column mechanism 43 is in interference fit with the operating arm mechanism 44 through the cantilever support 6 and drives the operating arm mechanism 44, the counterweight mechanism 45, the welding equipment connection adjusting mechanism 48 and the submerged arc welding equipment to perform circumferential rotation welding, and the rotating speed is adjusted through the variable-frequency speed reduction control mechanism 46.
The central column mechanism 43 is composed of a wire slot supporting plate 1, a lifting motor 2, a lead screw fixing plate 3, an anti-rotation key 4, a central column mandrel 5, a wiring groove 40, a cantilever support 6, a lead screw 7, a lead screw nut 11, a bearing seat 12, a tapered roller bearing 41, a protective baffle 17, a base 18, a handle bolt 42, a jackscrew adjusting window 22 and a centering device 23, wherein the base 18 is arranged in the middle of a water guide part 33 to be surfacing welded; the aligning device 23 is arranged on the bottom plate of the base 18, and the aligning device 23 and the bottom plate of the base 18 are tightly clamped by using a fixing bolt; the central column mandrel 5 is arranged on the base 18; the bearing seat 12 and the base 18 are connected by a fastening bolt 42; the outer shaft diameter of the central column mandrel 5 is matched with the inner holes of the tapered roller bearings 41 at the upper and lower ends in the bearing seat 12; the cantilever support 6 is of a two-piece handle structure, the inner diameter of the cantilever support 6 is matched with the outer diameter of the central column mandrel 5, and the cantilever support is in interference fit with the central column mandrel 5 after being tightened; the lead screw 7 is fixed on the central column mandrel 5 through the lead screw fixing plate 3; the lifting motor 2 is fixedly arranged on the lead screw fixing plate 3; the lead screw 7 is connected with the cantilever support 6 through a lead screw nut 11; the power lines and the control lines of the welding equipment are arranged in the central column mandrel 5 of the central column mechanism 43, the wiring groove 40 and the towline groove 25 of the operating arm mechanism 44; the central column mandrel 5 is supported for rotation by a bearing block 12 fixed to a base 18.
The operating arm mechanism 44 consists of a cross beam 10, a towline slot 25 and an extension arm 32, wherein one end of the cross beam 10 is connected with the cantilever support 6 of the central column mechanism 43 through a bolt; the other end is connected with an extension arm 32 through a bolt; the towline slot 25 is connected with the wiring harness 19 of the electric transmission mechanism 47; the beam 10 drives the submerged arc welding equipment to rotate, and the linear speed coverage range is 100 mm/Min-400 mm/Min; the rotating radius range of the submerged arc welding equipment driven by the beam 10 is R1500 mm-R3500 mm by increasing or decreasing the balance weight of the balance weight arm 8 and disassembling or assembling the extension arm 32.
The counterweight mechanism 45 consists of a counterweight arm 8, a counterweight block and a locking device 9, and the counterweight arm 8 is welded with the cantilever support 6 of the central column mechanism 43; the counterweight and locking device 9 is fixed at the far end of the counterweight arm 8.
The variable-frequency speed reduction control mechanism 46 consists of an electric cabinet 13, a gear transmission case 14, an RV speed reducer 15 and a variable-frequency motor 16, wherein the electric cabinet 13 is fixed on a bearing seat 12 of the central column mechanism 43, and a control line of welding equipment is led out from the electric cabinet 13; the variable frequency motor 16 is fixed on the base 18 of the central column mechanism 43 through a motor bracket, and transmits power to the central column mandrel 5 of the central column mechanism 43 through the gear transmission box 14 and the RV reducer 15; the gear transmission box 14, the RV reducer 15 and the variable frequency motor 16 are arranged in the protective baffle 17 and the base 18 of the central column mechanism 43; the speed is mechanically changed through a gear transmission box 14 and an RV reducer 15, and further electrically changed through a variable frequency motor 16 and a frequency converter; the frequency conversion frequency of the variable frequency motor 16 of the submerged arc surfacing non-standard equipment is limited within 50Hz during welding operation.
The electric transmission mechanism 47 is composed of a wiring harness 19, a collecting ring electric brush 20 and a brush holder 21, wherein the wiring harness 19, the collecting ring electric brush 20 and the brush holder 21 are arranged in a protective baffle 17 and a base 18 of the central column mechanism 43; one end of the collecting ring electric brush 20 is connected with an external power supply, and the other end is connected with the wiring harness 19; the power supply of the welding equipment is led to the position of the collecting ring brush 20 through the towline slot 25 of the operating arm mechanism 44 and the wiring harness 19; the power line of the submerged arc welding equipment is led out from the brush seat 21; the electric connection between the external power supply of the welding equipment and the wire harness 19 adopts a wireless rotary connection structure of a collecting ring electric brush 20; the maximum current which can be carried by the wire harness 19 and the collecting ring brush 20 during welding operation is not less than 1250A, and the withstand voltage is more than 110V.
The welding equipment connection adjusting mechanism 48 consists of a linear guide rail 24, a supporting wheel adjusting mechanism 26, a welding equipment fixing hanging arm 27, a supporting wheel 28, a rack 29, a hand-operated wheel 30 and a radial adjusting device 31, wherein the welding equipment fixing hanging arm 27 is mechanically connected with the welding equipment; the welding equipment fixing hanging arm 27 is matched with the hand-operated wheel 30 through a rack, and the radial positions of the welding equipment fixing hanging arm 27 and the welding equipment are adjusted on the linear guide rail 24; the supporting wheel adjusting mechanism 26 is matched with the supporting wheel 28 in a rack manner; the elevation of the supporting wheel 28 is adjusted through the rack 29; the radial position of the welding device is adjusted by means of a radial adjustment device 31.
Preparing before welding, namely connecting a submerged arc welding device to the far end of a beam 10 of a submerged arc surfacing non-standard device through a welding device fixing hanging arm 27, fixing the submerged arc surfacing non-standard device in the middle of a water guide component 33 to be surfaced, adjusting the circle center and the level according to the rough machining surface of the water guide component 33, and enabling a supporting wheel 28 to be in contact with the rough machining surface of the water guide component 33 to be surfaced; and (3) formally welding, wherein the non-standard submerged arc surfacing equipment drives the beam 10, the extension arm 32, the fixed hanging arm 27 of the welding equipment and the welding equipment to perform circumferential automatic surfacing through the power of the supporting wheel 28.
As shown in fig. 3 and 4, during overlaying, a 'strip electrode' submerged arc welding material 34 is used for overlaying a transition layer 35 of austenite plus 10% -15% ferrite welding material, then a 'wire electrode' submerged arc welding material 36 is used for filling 38 and overlaying 39, and a secondary annealing heat treatment process is added after overlaying the martensitic stainless steel welding material with the requirement on wear resistance.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The non-standard equipment for the submerged arc surfacing in the circumferential direction of the plane and the vertical face is characterized by comprising a central column mechanism (43), an operating arm mechanism (44), a counterweight mechanism (45), a variable-frequency speed reduction control mechanism (46), an electric transmission mechanism (47) and a welding equipment connection adjusting mechanism (48), wherein the submerged arc surfacing equipment is connected to the welding equipment connection adjusting mechanism (48); the welding equipment is connected with the adjusting mechanism (48) and fixed with the remote handle of the operating arm mechanism (44); the submerged arc welding equipment is connected with an external power supply and a variable-frequency speed reduction control mechanism (46) through an electric transmission mechanism (47); the electric transmission mechanism (47) is arranged inside the central column mechanism (43); the variable-frequency speed reduction control mechanism (46) is fixed on the bearing seat (12) and the base (18) of the central column mechanism (43); the counterweight mechanism (45) and the cantilever support (6) of the central column mechanism (43) are welded into a whole; the central column mechanism (43) is in interference fit with the operating arm mechanism (44) through the cantilever support (6) of the central column mechanism and drives the operating arm mechanism (44), the counterweight mechanism (45), the welding equipment connection adjusting mechanism (48) and the submerged arc welding equipment to perform circumferential rotation welding, and the rotating speed is adjusted through the variable-frequency speed reduction control mechanism (46).
2. The plane and vertical face circumferential submerged arc surfacing non-standard equipment according to claim 1, wherein the central column mechanism (43) is composed of a wire groove supporting plate (1), a lifting motor (2), a lead screw fixing plate (3), an anti-rotation key (4), a central column mandrel (5), a wiring groove (40), a cantilever support (6), a lead screw (7), a lead screw nut (11), a bearing seat (12), a tapered roller bearing (41), a protective baffle (17), a base (18), a closing bolt (42), a jackscrew adjusting window (22) and a centering device (23), and the base (18) is installed in the middle of a water guide component (33) to be surfaced; the aligning device (23) is arranged on the bottom plate of the base (18), and the aligning device (23) and the bottom plate of the base (18) are tightly clamped by using a fixing bolt; the central column mandrel (5) is arranged on the base (18); the bearing seat (12) is connected with the base (18) through a handle bolt (42); the outer diameter of the central column mandrel (5) is matched with the inner holes of the tapered roller bearings (41) at the upper and lower ends in the bearing seat (12); the cantilever support (6) is of a two-piece handle structure, the inner diameter of the cantilever support (6) is matched with the outer diameter of the central column mandrel (5), and the cantilever support and the central column mandrel (5) are in interference fit after being tightened; the lead screw (7) is fixed on the central column mandrel (5) through the lead screw fixing plate (3); the lifting motor (2) is fixedly arranged on the screw rod fixing plate (3); the lead screw (7) is connected with the cantilever support (6) through a lead screw nut (11); the power line and the control line of the welding equipment are arranged in a central column mandrel (5) of a central column mechanism (43), a wiring groove (40) and a drag chain wire groove (25) of an operating arm mechanism (44); the central column mandrel (5) is supported to rotate by a bearing seat (12) fixed with a base (18).
3. The plane and vertical face circumferential submerged arc surfacing non-standard equipment according to claim 1, wherein the operating arm mechanism (44) consists of a cross beam (10), a towline groove (25) and an extension arm (32), and one end of the cross beam (10) is in bolted connection with a cantilever support (6) of a central column mechanism (43); the other end is connected with an extension arm (32) through a bolt; the towline slot (25) is connected with a wire harness (19) of the electric transmission mechanism (47); the beam (10) drives the submerged arc welding equipment to rotate, and the linear speed coverage range is 100 mm/Min-400 mm/Min; the rotating radius range of the submerged arc welding equipment driven by the cross beam (10) is R1500 mm-R3500 mm by increasing or decreasing the balance weight of the balance weight arm (8) and disassembling or assembling the extension arm (32).
4. The plane and vertical face circumferential submerged arc surfacing non-standard equipment according to claim 1, wherein the counterweight mechanism (45) consists of a counterweight arm (8), a counterweight block and a locking device (9), and the counterweight arm (8) is welded with the cantilever support (6) of the center column mechanism (43); the counterweight and the locking device (9) are fixed at the far end of the counterweight arm (8).
5. The planar and vertical face circumferential submerged arc surfacing non-standard equipment according to claim 1, wherein the variable frequency speed reduction control mechanism (46) consists of an electric cabinet (13), a gear transmission (14), an RV speed reducer (15) and a variable frequency motor (16), the electric cabinet (13) is fixed on a bearing seat (12) of a central column mechanism (43), and a welding equipment control line is led out from the electric cabinet (13); the variable frequency motor (16) is fixed on a base (18) of the central column mechanism (43) through a motor support, and power is transmitted to a central column mandrel (5) of the central column mechanism (43) through a gear transmission (14) and an RV reducer (15); the gear transmission (14), the RV reducer (15) and the variable frequency motor (16) are arranged in a protective baffle (17) and a base (18) of the central column mechanism (43); the speed is mechanically changed through a gear transmission case (14) and an RV reducer (15), and is further electrically changed through a variable frequency motor (16) and a frequency converter; the frequency conversion frequency of the variable frequency motor (16) of the submerged arc surfacing non-standard equipment is limited within 50Hz during welding operation.
6. The plane and vertical face circumferential submerged arc surfacing non-standard equipment according to claim 1, wherein the electric transmission mechanism (47) consists of a wiring harness (19), a collecting ring electric brush (20) and a brush holder (21), and the wiring harness (19), the collecting ring electric brush (20) and the brush holder (21) are installed inside a protective baffle (17) and a base (18) of a central column mechanism (43); one end of a collecting ring electric brush (20) is connected with an external power supply, and the other end of the collecting ring electric brush is connected with a wiring harness (19); the power supply of the welding equipment is led to the position of a collecting ring electric brush (20) through a towline slot (25) of an operating arm mechanism (44) and a wiring harness (19); the power line of the submerged arc welding equipment is led out from the brush holder (21); the electric connection between an external power supply of the welding equipment and the wire harness (19) adopts a wireless rotary connection structure of a collecting ring electric brush (20); the welding current of the submerged arc welding equipment is carried through the collecting ring brush (20) and power supply transmission is completed, the maximum current which can be carried by the wire harness (19) and the collecting ring brush (20) during welding operation is not less than 1250A, and the withstand voltage is more than 110V.
7. The plane and vertical face circumferential submerged arc surfacing non-standard equipment according to claim 1 is characterized in that the welding equipment connection adjusting mechanism (48) consists of a linear guide rail (24), a supporting wheel adjusting mechanism (26), a welding equipment fixing hanging arm (27), a supporting wheel (28), a rack (29), a hand-operated wheel (30) and a radial adjusting device (31), and the welding equipment fixing hanging arm (27) is mechanically connected with the welding equipment; the welding equipment fixing hanging arm (27) is matched with a rack of the hand-operated wheel (30), and the radial positions of the welding equipment fixing hanging arm (27) and the welding equipment are adjusted on the linear guide rail (24); the supporting wheel adjusting mechanism (26) is matched with the supporting wheel (28) by a rack; the elevation of the supporting wheel (28) is adjusted through the rack (29); the radial position of the welding device is adjusted by means of a radial adjustment device (31).
8. A plane and elevation circumferential submerged arc surfacing process method which uses the plane and elevation circumferential submerged arc surfacing non-standard equipment according to claims 1-7, and is characterized by comprising the following steps:
step 1: preparing before welding, namely connecting a submerged arc welding device handle to the far end of a beam (10) of a submerged arc surfacing non-standard device through a welding device fixing hanging arm (27), fixing the submerged arc surfacing non-standard device in the middle of a water guide component (33) to be surfaced, adjusting the circle center and the level according to the rough machining surface of the water guide component (33), and enabling a supporting wheel (28) to be in contact with the rough machining surface of the water guide component (33) to be surfaced;
step 2: and (3) formally welding, wherein the non-standard submerged arc surfacing equipment drives the beam (10), the extension arm (32), the fixed hanging arm (27) of the welding equipment and the circumferential automatic surfacing of the welding equipment through the power of the supporting wheel (28).
9. A planar and vertical face circumferential submerged arc overlaying process according to claim 8, wherein during overlaying, a 'strip electrode' submerged arc welding material (34) is used for overlaying a transition layer (35) of austenite + 10% -15% ferrite welding material, and then a 'wire electrode' submerged arc welding material (36) is used for filling (38) and overlaying a cover face (39).
10. The planar and vertical face circumferential submerged arc surfacing process method according to claim 8, characterized in that a secondary annealing heat treatment process is added after surfacing for martensitic stainless steel welding materials with wear resistance requirements.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117245181A (en) * | 2023-11-17 | 2023-12-19 | 河北品华管业有限公司 | Triaxial transmission mechanism of submerged arc welding machine |
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Application publication date: 20210720 |