CN108655638B - Water-cooling welding fixture and manufacturing method thereof, case body fixture and welding method thereof - Google Patents
Water-cooling welding fixture and manufacturing method thereof, case body fixture and welding method thereof Download PDFInfo
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- CN108655638B CN108655638B CN201810489810.6A CN201810489810A CN108655638B CN 108655638 B CN108655638 B CN 108655638B CN 201810489810 A CN201810489810 A CN 201810489810A CN 108655638 B CN108655638 B CN 108655638B
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- cooling
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses a water-cooling welding fixture and a manufacturing method thereof, a case body fixture and a welding method, wherein the water-cooling welding fixture comprises a positioning structure for fixing and positioning a boss part at the welding position of a case body and a heat dissipation structure for heat dissipation and cooling when the boss part is welded to the case body in a water-cooling mode, an air flow channel for conveying protective gas to a cavity formed by enclosing the boss part and the case body is arranged in the positioning structure, and a water flow channel for dissipating heat and cooling the welding part by flowing cooling water is arranged between the positioning structure and the heat dissipation structure and/or in the heat dissipation structure. According to the water-cooling welding fixture, the cooling water in the water flow channel is used for continuously taking away the heat absorbed by the heat dissipation structure in the welding process, so that the heat dissipation performance of the heat dissipation structure is improved, the heat around a welding line can be continuously absorbed by the heat dissipation structure, and the boss part and the case body are prevented from being seriously deformed due to overhigh temperature.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a water-cooling welding clamp and a manufacturing method thereof, a machine box body clamp and a welding method thereof.
Background
A plurality of boss parts need to be welded on the outer surface of the aeroengine case body, the boss parts are various in shape, and precise holes or threaded holes are machined in the axis of the boss parts and are generally used for installing parts such as adjustable blades, pipelines and sensors. Because the wall thickness of the machine case body and the lug boss part is thick, the high heat quantity of the current required by welding is large, the residual stress after welding directly causes the warpage of the upper and lower mounting edges, the lug boss part deforms seriously, and the flatness of the mounting edge of the machine case body and the position degree of the lug boss part can not meet the product requirements.
In the prior art, the welding method is adjusted, welding parameters are adjusted, heat dissipation is enhanced, a boss part clamp and a case part clamp are used for carrying out rigid constraint on a case body and the boss part, a heat dissipation copper block is arranged around a welding line to enhance heat dissipation, and welding deformation of parts is improved.
Disclosure of Invention
The invention provides a water-cooling welding clamp and a manufacturing method thereof, a case body clamp and a welding method thereof, and aims to solve the technical problem of serious deformation in the existing boss part and case body welding process.
According to one aspect of the present invention, there is provided a water-cooling welding jig for positioning and cooling a boss when water-cooling welding is performed on a casing, the water-cooling welding jig comprising a positioning structure for fixing and positioning the boss at a welding position of the casing and a cooling structure for cooling the boss when water-cooling welding is performed on the casing, a first end of the cooling structure is fitted over a boss fixing end of the positioning structure, a second end of the cooling structure is fitted to the casing to absorb heat generated during welding, an air flow channel for conveying shielding gas into a cavity formed by the boss and the casing is provided in the positioning structure, a water flow channel for cooling the welding portion by flowing cooling water is provided between the positioning structure and the cooling structure and/or in the cooling structure, the positioning structure is provided with a water inlet channel for conveying cooling water and a water discharge channel for discharging cooling water, the water inlet channel and the water discharge channel are respectively communicated with the water flow channel.
The outer wall surface of the boss fixing end of the positioning structure is an outer step surface, the inner wall surface of the heat dissipation structure is an inner step surface matched and sleeved with the outer step surface, the outer step surface and the inner step surface are in sealed sleeve joint, and a water flow channel is formed between the outer step surface and the inner step surface.
Be equipped with the dog that is used for separating the rivers passageway in the rivers passageway, the dog separates the rivers passageway of inhalant canal output and the rivers passageway of drainage channel input so that cooling water follow the inhalant canal and get into behind the rivers passageway flow and absorb heat of heat radiation structure and then discharge from the drainage channel.
An exhaust groove is formed in the joint surface between the heat dissipation structure and the case body and used for exhausting air at the welding position of the boss piece and the case body and replacing the air with protective gas to achieve gas protection of a welding line.
The positioning structure comprises a positioning seat for positioning the boss part, a pull rod axially inserted into the positioning seat and in threaded connection with the boss part, a bush arranged between the positioning seat and the pull rod and used for guiding the pull rod to be inserted, and a baffle plate for fixing and positioning the water-cooling welding fixture on the machine box body fixture; the inner cavity of the positioning seat is sequentially provided with a first inner hole, a second inner hole and a third inner hole along the axis to the direction of the case body, the lining is attached to the inner wall surface of the first inner hole, and the boss piece extends into the second inner hole matched with the top end of the boss piece from the third inner hole and is attached to the end surface of the lining;
the airflow channel comprises an axial channel arranged in the pull rod along the axial direction of the pull rod, a first radial channel arranged in the pull rod along the radial direction of the pull rod and communicated with the axial channel, a second radial channel arranged in the bushing along the radial direction of the bushing and communicated with the first radial channel, a first axial ventilation groove arranged on the outer surface of the bushing along the radial direction of the bushing, and a second axial ventilation groove arranged on the inner wall surface of a second inner hole along the axial direction of the positioning seat and communicated with the first axial ventilation groove.
The positioning structure comprises a positioning seat for positioning the boss part, a pull rod which is axially inserted into the positioning seat and is in threaded connection with the boss part, and a baffle plate for fixing and positioning the water-cooling welding fixture on the machine box body fixture;
the inner cavity of the positioning seat is sequentially provided with a first inner hole, a second inner hole and a third inner hole matched with the top end of the boss part along the axis direction of the case body, and the boss part is inserted into the third inner hole and is attached to the end face of the second inner hole;
the airflow channel comprises an axial channel arranged in the pull rod along the axial direction of the pull rod, a radial channel arranged in the pull rod along the radial direction of the pull rod and communicated with the axial channel, an annular groove arranged between the first inner hole and the second inner hole and communicated with the radial channel, and a plurality of axial vent holes arranged at the bottom of the annular groove and distributed along the circumferential direction of the second inner hole, wherein protective gas enters a cavity formed by the boss and the case body in a surrounding way after passing through the axial vent holes.
The positioning structure comprises a positioning seat for positioning the boss, a blocking sleeve which is inserted into the first end of the positioning seat along the axial direction and is used for enabling the inside of the positioning seat to form an airflow inner cavity, an air inlet pipe which penetrates through the blocking sleeve and is communicated with the airflow inner cavity, a pull rod which extends into the positioning seat along the axial direction and is in threaded connection with the top end of the boss, and a baffle plate which is used for fixing and positioning the water-cooled welding clamp on a machine box body clamp; the positioning seat comprises a positioning groove and a plurality of vent holes, the positioning groove is arranged at the second end of the positioning seat and matched with the top end of the boss piece, the vent holes are arranged around the positioning groove and communicated with the inner cavity of the airflow, and protective gas enters a cavity formed by the boss piece and the case body in a surrounding mode after passing through the vent holes.
According to another aspect of the present invention, there is provided a method for manufacturing a water-cooled welding jig, including the steps of: processing the outer wall surface of the boss fixing end of the positioning structure into an outer step surface, processing the inner wall surface of the heat dissipation structure into an inner step surface which is matched and sleeved with the outer step surface, and reserving a lug at the outer step surface of the positioning structure or the inner step surface of the heat dissipation structure for separating a water flow channel; sleeving an outer step surface of the positioning structure with an inner step surface of the heat dissipation structure, and performing bead welding and sealing on the inner and outer step junction surfaces along the periphery; and carrying out a sealing test to check the sealing effect of the water flow channel between the inner step surface and the outer step surface.
According to another aspect of the present invention, there is provided a cartridge body clamp for fixing a cartridge body and installing the above water-cooling welding clamp, the cartridge body clamp including a lower mounting plate for supporting a small end of the cartridge body, a press ring fixed to the lower mounting plate for pressing and fixing an edge plate of the small end of the cartridge body to the lower mounting plate, an upper mounting plate for fixing a large end of the cartridge body, a plurality of posts arranged on the lower mounting plate for fixing the upper mounting plate, and a plurality of mounting plates arranged on the lower mounting plate for positioning and fixing the water-cooling welding clamp according to a welding position of a boss member.
According to another aspect of the present invention, there is provided a method for welding multiple bosses to a casing, wherein multiple bosses are respectively fixed by multiple water-cooled welding jigs, and the casing and the multiple water-cooled welding jigs are respectively fixed by the casing jigs, the method comprising the steps of: fixing the machine case on a machine case clamp; respectively fixing a plurality of boss pieces on positioning mechanisms of a plurality of matched water-cooling welding fixtures; respectively fixing the water-cooling welding clamps fixed with the lug bosses on the mounting plates corresponding to the case body clamps; connecting an airflow channel of the water-cooling welding fixture with an air inlet pipeline, and respectively connecting a water inlet channel and a water drainage channel of the water-cooling welding fixture with a water inlet pipeline and a water outlet pipeline; opening an air inlet pipeline to enable the protective gas to be completely replaced by the air around the boss part, and opening an air inlet pipeline and an air outlet pipeline to enable the cooling water to be completely replaced by the air in the water inlet channel, the water flow channel and the water drainage channel; welding the lug bosses at the corresponding positions of the case body by using welding equipment, and continuously radiating and cooling by using protective gas and cooling water; and closing the air inlet pipeline and the water inlet pipeline until the machine box body is cooled.
The invention has the following beneficial effects:
according to the water-cooling welding fixture, the water flow channel is additionally arranged between the positioning structure and the heat dissipation structure and/or in the heat dissipation structure, the positioning structure is provided with the water inlet channel which is communicated with the water flow channel and is used for conveying cooling water and the water drainage channel which is used for discharging the cooling water, and the cooling water in the water flow channel is used for continuously taking away heat absorbed by the heat dissipation structure in the welding process, so that the heat dissipation performance of the heat dissipation structure is improved, the heat dissipation structure can continuously absorb heat around a welding line, and the boss part and the machine box body are prevented from being seriously deformed due to overhigh temperature; the airflow channel for conveying the protective gas for improving the quality of the welding seam is arranged in the positioning mechanism, and the water flow channel is arranged between the positioning structure and the heat dissipation structure and/or in the heat dissipation structure so as to realize the strict separation of the airflow channel and the water flow channel, ensure that the cooling water in the water flow channel and the water vapor generated when the cooling water absorbs the heat of the heat dissipation structure during welding are all blocked by the positioning mechanism and cannot enter the airflow channel and the boss part to pollute the welding seam.
According to the manufacturing method of the water-cooling welding fixture, the outer wall surface of the boss fixing end of the positioning structure is processed into the outer step surface, the inner wall surface of the heat dissipation structure is processed into the inner step surface which is matched and sleeved with the outer step surface, and the convex block is reserved at the outer step surface of the positioning structure or the inner step surface of the heat dissipation structure to separate a water flow channel and is processed at the opposite position, so that the operation is easy; the positioning structure and the heat dissipation structure are in sealed sleeve joint by performing bead welding and sealing on the joint surface of the inner step surface and the outer step surface along the periphery, so that a sealed water flow channel is formed between the inner step surface and the outer step surface; the tightness of the water flow channel is tested through a sealing test, and the water vapor generated when cooling water in the water flow channel and the cooling water absorb heat of the heat dissipation structure can not enter the air flow channel and the periphery of the boss part to pollute a welding seam in the using process of the water-cooling welding clamp.
According to the case body clamp, the case body is arranged on the lower mounting plate, the edge plate at the small end of the case body is pressed and fixed on the lower mounting plate through the pressing ring, and the upper mounting plate is pressed on the large end of the case body and fixed on the plurality of stand columns on the lower mounting plate, so that the case body is positioned and fixed between the upper mounting plate and the lower mounting plate; the plurality of water-cooling welding fixtures fixed with the lug bosses are arranged on the plurality of mounting plates on the lower mounting plate, and then the plurality of lug bosses are welded with the machine box body.
The invention relates to a welding method of a multi-lug boss and a machine box body, which is characterized in that after the machine box body is positioned and fixed by a machine box body clamp and a plurality of water-cooling welding clamps fixed with the lug boss, the lug boss is welded on the outer surface of the machine box body; the protective gas is conveyed to the periphery of the boss part before welding to completely replace the air around the boss part with the protective gas, so that the high-temperature metal at the welding seam is prevented from being oxidized by the air in the welding process; the cooling water starts to be welded after the water inlet channel, the water flow channel and the drainage channel circulate, so that the cooling water continuously absorbs the heat of the heat dissipation structure in the whole welding process, the heat dissipation performance of the heat dissipation structure is improved, the heat dissipation structure can continuously absorb the heat around a welding line, and the boss part and the case body are prevented from being seriously deformed due to overhigh temperature; and after welding is finished, the air inlet pipeline and the water inlet pipeline are closed until the machine case body is cooled, so that the temperature of the machine case body and the boss piece is uniformly cooled, the deformation of the machine case body and the boss piece caused by the residual stress after welding in the machine case body and the boss piece is avoided, and the flatness of the installation edge of the machine case body and the position degree of the boss piece after the plurality of boss pieces and the machine case body are welded can meet the product requirement.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of a water-cooled welding jig for positioning a fixed long boss according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of an outer step surface of a positioning structure for positioning a fixed long boss according to a preferred embodiment of the present invention;
FIG. 3 is a schematic structural view of an inner step surface of a heat dissipation structure according to a preferred embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a water-cooled welding fixture for positioning and fixing a short boss according to a preferred embodiment of the present invention;
FIG. 5 is a schematic structural view of an outer step surface of a positioning structure for positioning and fixing a short boss according to a preferred embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a water-cooled welding jig for positioning and fixing a precise inner hole boss according to a preferred embodiment of the present invention;
FIG. 7 is a schematic structural view of an outer step surface of a positioning structure for positioning and fixing a precise internal bore boss according to a preferred embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a water-cooled welding jig according to a preferred embodiment of the present invention;
FIG. 9 is a schematic structural view of a cartridge body clamp according to a preferred embodiment of the present invention.
Illustration of the drawings:
1. a positioning structure; 10. positioning seats; 101. a first inner bore; 102. a second inner bore; 103. a third inner bore; 104. an annular groove; 105. an axial vent; 106. positioning a groove; 107. a vent hole; 108. a second axial vent slot; 11. a pull rod; 12. a baffle plate; 13. a bushing; 14. plugging a sleeve; 15. an air inlet pipe; 2. a heat dissipation structure; 3. a case body; 4. an air flow channel; 5. a water flow channel; 6. a water inlet channel; 7. a drainage channel; 8. a stopper; 100. water-cooling the welding fixture; 200. a cartridge body clamp; 201. a lower mounting plate; 202. pressing a ring; 203. an upper mounting plate; 204. a column; 205. mounting a plate; 300. a long boss; 400. a short boss; 500. and (4) a precise inner hole boss.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
FIG. 1 is a schematic cross-sectional view of a water-cooled welding jig for positioning a fixed long boss according to a preferred embodiment of the present invention; FIG. 2 is a schematic structural view of an outer step surface of a positioning structure for positioning a fixed long boss according to a preferred embodiment of the present invention; FIG. 3 is a schematic structural view of an inner step surface of a heat dissipation structure according to a preferred embodiment of the present invention; FIG. 4 is a schematic cross-sectional view of a water-cooled welding fixture for positioning and fixing a short boss according to a preferred embodiment of the present invention; FIG. 5 is a schematic structural view of an outer step surface of a positioning structure for positioning and fixing a short boss according to a preferred embodiment of the present invention; FIG. 6 is a schematic cross-sectional view of a water-cooled welding jig for positioning and fixing a precise inner hole boss according to a preferred embodiment of the present invention; FIG. 7 is a schematic structural view of an outer step surface of a positioning structure for positioning and fixing a precise internal bore boss according to a preferred embodiment of the present invention; FIG. 8 is a schematic cross-sectional view of a water-cooled welding jig according to a preferred embodiment of the present invention; FIG. 9 is a schematic structural view of a cartridge body clamp according to a preferred embodiment of the present invention.
As shown in fig. 1 to 7, the water-cooled welding jig 100 of the present embodiment is used for positioning and cooling heat generated when a boss is water-cooled welded to a casing 3, and includes a positioning structure 1 for fixing and positioning the boss at a welding position of the casing 3 and a heat dissipation structure 2 for cooling heat generated when the boss is water-cooled welded to the casing 3. The first end of the heat dissipation structure 2 is sleeved on the boss fixing end of the positioning structure 1, and the second end of the heat dissipation structure 2 is attached to the case body 3 to absorb heat generated during welding. An airflow channel 4 for conveying protective gas to a cavity formed by enclosing the boss part and the case body 3 is arranged in the positioning structure 1. A water flow channel 5 for dissipating heat and cooling the welding part by flowing cooling water is arranged between the positioning structure 1 and the heat dissipation structure 2 and/or in the heat dissipation structure 2. The positioning structure 1 is provided with a water inlet channel 6 for conveying cooling water and a water outlet channel 7 for discharging the cooling water, and the water inlet channel 6 and the water outlet channel 7 are respectively communicated with the water flow channel 5. According to the water-cooling welding fixture 100, the water flow channel 5 is additionally arranged between the positioning structure 1 and the heat dissipation structure 2, and the positioning structure 1 is provided with the water inlet channel 6 communicated with the water flow channel 5 and used for conveying cooling water and the water drainage channel 7 used for discharging the cooling water. The cooling water in the water flow channel 5 is utilized to continuously take away the heat absorbed by the heat dissipation structure 2 in the welding process, so that the heat dissipation performance of the heat dissipation structure 2 is improved, the heat dissipation structure 2 can continuously absorb the heat around the welding line, and the boss part and the case body 3 are prevented from being seriously deformed due to overhigh temperature. The water flow channel 5 is separated from the air flow channel 4 which is used for conveying the protective gas to the periphery of the boss part in the positioning structure 1, and water vapor generated when cooling water in the water flow channel 5 absorbs heat of the heat dissipation structure 2 is blocked by the positioning mechanism, so that the cooling water cannot enter the periphery of the air flow channel 4 and the boss part, and therefore pollution of the water and the water vapor to a welding seam is avoided.
As shown in fig. 2-3, in the present embodiment, the water channel 5 is disposed between the positioning structure 1 and the heat dissipating structure 2. The outer wall surface of the boss fixing end of the positioning structure 1 is an outer step surface. The inner wall surface of the heat radiation structure 2 is provided with an inner step surface which is matched and sleeved with the outer step surface. The outer step surface and the inner step surface are in sealing sleeve joint, and a water flow channel 5 is formed between the outer step surface and the inner step surface. The heat dissipation structure 2 is a heat conduction sleeve made of metal with strong heat conduction capability. Outer step face is processed into through the outer wall with location structure 1's boss stiff end, and interior step face that cup joints with outer step face cooperation is processed into with the internal face of heat radiation structure 2, makes the inclosed annular inner chamber that the interlude formed constitute rivers passageway 5, need not to form rivers passageway 5 at the inside processing inner chamber of heat radiation structure 2, and processing is simple and rivers passageway 5 and airflow channel 4 separate strictly to water and steam have been avoided causing the pollution to the butt weld.
As shown in fig. 8, a stopper 8 for separating the water flow channel 5 is disposed in the water flow channel 5, and the stopper 8 separates the water flow channel 5 at the output end of the water inlet channel 6 from the water flow channel 5 at the input end of the water discharge channel 7, so that the cooling water enters from the water inlet channel 6 and flows along the water flow channel 5 to absorb the heat of the heat dissipation structure 2, and then is discharged from the water discharge channel 7. By additionally arranging the stop block 8 for separating the water flow channel 5 between the output end of the water inlet channel 6 and the input end of the water drainage channel 7, cooling water flows into the water flow channel 5 from the output end of the water inlet channel 6 and then flows along the whole water flow channel 5 to absorb heat of the heat dissipation structure 2 and then is discharged from the water drainage channel 7, the temperature of the cooling water which can not continuously absorb heat after the heat of the heat dissipation structure 2 is absorbed is increased in time, the cooling water is discharged out of the water flow channel 5 in time, the fresh cooling water in the water flow channel 5 absorbs the heat of the heat dissipation structure 2, and therefore the heat dissipation performance of the heat dissipation structure 2 is improved. The phenomenon that part of cooling water enters the water flow channel 5 from the water inlet channel 6 and is directly discharged from the water drainage channel 7 without absorbing the heat of the heat dissipation structure 2 is avoided, and part of cooling water absorbing the heat of the heat dissipation structure 2 is retained in the water flow channel 5 and cannot continuously absorb the heat of the heat dissipation structure 2.
An exhaust groove is arranged on the binding surface between the heat dissipation structure 2 and the case body 3. The exhaust groove is used for exhausting air at the welding part of the boss and the machine box body 3 and replacing the air with protective gas so as to realize gas protection of the welding seam. Before welding, after protective gas flows into the space between the boss part and the heat dissipation structure 2 through the airflow channel 4, air between the boss part and the heat dissipation structure 2 is exhausted from the exhaust groove, so that the welding part of the boss part and the case body 3 is filled with the protective gas. The problem that high-temperature metal at the welding seam is oxidized by air in the welding process to influence the quality of the welding seam is avoided.
As shown in fig. 1, the boss member is a long boss 300 having a threaded bore. The positioning structure 1 comprises a positioning seat 10 for positioning a boss, a pull rod 11 inserted into the positioning seat 10 along the axial direction and in threaded connection with the boss, a bushing 13 arranged between the positioning seat 10 and the pull rod 11 for guiding the insertion of the pull rod 11, and a baffle 12 for fixing and positioning the water-cooled welding fixture 100 on the case fixture 200. The inner cavity of the positioning seat 10 is sequentially provided with a first inner hole 101, a second inner hole 102 and a third inner hole 103 along the axis toward the casing body 3, and the bush 13 is attached to the inner wall surface of the first inner hole 101. The boss extends from the third bore 103 into the second bore 102 which mates with the boss tip and abuts the end face of the bushing 13. The airflow channel 4 comprises an axial channel arranged in the pull rod 11 along the axial direction of the pull rod 11, a first radial channel arranged in the pull rod 11 along the radial direction of the pull rod 11 and communicated with the axial channel, a second radial channel arranged in the bushing 13 along the radial direction of the pull rod 11 and communicated with the first radial channel, a first axial ventilation groove arranged on the outer surface of the bushing 13 along the radial direction of the pull rod 11, and a second axial ventilation groove 108 arranged on the inner wall surface of the second inner hole 102 along the axial direction of the positioning seat 10 and communicated with the first axial ventilation groove. The bush 13 is inserted into the positioning socket 10 and fixed by an angle pin, so that the first axial ventilation groove on the outer surface of the bush 13 is communicated with the second axial ventilation groove 108 on the inner wall surface of the second inner hole 102, the positioning socket 10 realizes the positioning of the long boss 300 by the matching of the second inner hole 102 and the outer wall surface of the top end of the boss piece and the joint support of the end surface of the bush 13 and the end surface of the top end of the long boss 300. And the pull rod 11 is guided by the bushing 13 to be inserted into the positioning seat 10 to be in threaded connection with the threaded hole of the long boss 300 for fixation. Since the long boss 300 is a long boss, the boss needs to be inserted into the positioning seat 10, so that a hole for positioning the boss cannot be formed in the end face of the positioning seat 10, otherwise, the length of the heat dissipation mechanism needs to be increased. If the length of the heat dissipation structure 2 is increased, the distance between the water flow channel 5 between the positioning structure 1 and the heat dissipation structure 2 and the welding position is too far, so that the heat of the heat dissipation structure 2 cannot be absorbed in time. Therefore, the shaped hole of the positioning seat 10 for positioning the boss member needs to be disposed in the middle section of the positioning seat 10. If the molding hole which is attached to the outer wall surface and the end surface of the top end of the boss part is directly processed in the middle section of the positioning seat 10, the processing difficulty is high. Therefore, the end face of the boss part is attached and supported by the additionally arranged bush 13, the processing is simple, the bush 13 can also guide the pull rod 11 to be inserted into the third inner hole 103 of the positioning seat 10 to be in threaded connection with the boss part, and the positioning and fixing of the long boss 300 are realized. The shielding gas sequentially passes through the axial passage, the first radial passage, the second radial passage, the first axial vent groove and the second axial vent groove 108 in the pull rod 11 and enters the periphery of the long boss 300.
In another embodiment, shown in fig. 4-5, the boss is a short boss 400 having a threaded bore. The positioning structure 1 comprises a positioning seat 10 for positioning the boss, a pull rod 11 inserted into the positioning seat 10 in the axial direction and connected with the boss in a threaded manner, and a baffle 12 for fixing and positioning the water-cooled welding fixture 100 on the case fixture 200. The inner cavity of the positioning seat 10 is sequentially provided with a first inner hole 101, a second inner hole 102 and a third inner hole 103 matched with the top end of the boss part along the axis toward the casing body 3, and the boss part is inserted into the third inner hole 103 and attached to the end face of the second inner hole 102. The airflow channel 4 comprises an axial channel axially arranged in the pull rod 11 along the pull rod 11, a radial channel radially arranged in the pull rod 11 along the pull rod 11 and communicated with the axial channel, an annular groove 104 arranged between the first inner hole 101 and the second inner hole 102 and communicated with the radial channel, and a plurality of axial vent holes 105 arranged at the bottom of the annular groove 104 and distributed along the circumferential direction of the second inner hole 102. The shielding gas enters a cavity formed by the boss and the case body 3 after passing through the axial vent hole 105. The short boss 400 is a short type boss member. The profile hole matched with the top end of the short boss 400 on the positioning seat 10 is arranged at the end face. The shielding gas passes through the axial passage, the radial passage, the annular groove 104 and the axial vent hole 105 in the pull rod 11 in sequence and enters around the short boss 400.
In another embodiment, shown in fig. 6-7, the boss is a precision bore boss 500. The end face of the top end of the boss part is provided with two threaded holes which are respectively positioned at two sides of the precise inner hole. The positioning structure 1 comprises a positioning seat 10 for positioning the boss, a blocking sleeve 14 inserted into a first end of the positioning seat 10 along the axial direction to form an airflow inner cavity inside the positioning seat 10, an air inlet pipe 15 penetrating through the blocking sleeve 14 and communicated with the airflow inner cavity, a pull rod 11 axially extending into the positioning seat 10 and in threaded connection with the top end of the boss, and a baffle 12 for installing the water-cooled welding fixture 100 on the casing fixture 200. The positioning seat 10 includes a positioning groove 106 disposed at the second end of the positioning seat 10 and matched with the top end of the boss member, and a plurality of vent holes 107 disposed around the positioning groove 106 and communicated with the inner cavity of the air flow, and the shielding gas enters the cavity formed by the boss member and the case body 3 after passing through the vent holes 107. Because the hole of accurate hole boss 500 is accurate hole, can't insert through a pull rod 11 that threaded connection is fixed in the hole of accurate hole boss 500, consequently insert two screw holes of boss top end face department through two pull rods 11 that threaded connection is fixed. The shielding gas passes through the gas inlet pipe 15, the gas flow cavity and the vent hole 107 in sequence and enters the periphery of the boss.
The manufacturing method of the water-cooling welding jig of the embodiment is used for manufacturing the water-cooling welding jig 100, and includes the following steps: processing the outer wall surface of the boss fixing end of the positioning structure 1 into an outer step surface, processing the inner wall surface of the heat dissipation structure 2 into an inner step surface which is matched and sleeved with the outer step surface, and reserving a lug at the outer step surface of the positioning structure 1 or the inner step surface of the heat dissipation structure 2 for separating a water flow channel 5; sleeving an outer step surface of the positioning structure 1 with an inner step surface of the heat dissipation structure 2, and performing bead welding and sealing along the periphery of a joint surface of the inner step surface and the outer step surface; a sealing test was performed to check the sealing effect of the water flow channel 5 between the inner and outer step surfaces. According to the manufacturing method of the water-cooling welding fixture, the outer wall surface of the boss fixing end of the positioning structure 1 is processed into the outer step surface, the inner wall surface of the heat dissipation structure 2 is processed into the inner step surface which is matched and sleeved with the outer step surface, and a bump is reserved at the outer step surface of the positioning structure 1 or the inner step surface of the heat dissipation structure 2 to separate the water flow channel 5, so that the processing is performed at the opposite position, and the operation is easy; the positioning structure 1 and the heat dissipation structure 2 are in sealed sleeve joint by performing bead welding and sealing on the joint surface of the inner step surface and the outer step surface along the periphery, so that a closed water flow channel 5 is formed between the inner step surface and the outer step surface; the tightness of the water flow channel 5 is checked through a sealing test, and it is ensured that when the water-cooling welding fixture 100 is used, cooling water in the water flow channel 5 and water vapor generated when the cooling water absorbs heat of the heat dissipation structure 2 cannot enter the air flow channel 4 and the periphery of the boss part to pollute a weld joint.
As shown in fig. 9, the casing 3 fixture of the present embodiment is used for fixing the casing 3 and installing a plurality of the water-cooled welding fixtures 100. The case body clamp 200 comprises a lower mounting plate 201 for supporting the small end of the case body 3, a pressing ring 202 fixed on the lower mounting plate 201 and used for pressing and fixing an edge plate of the small end of the case body 3 on the lower mounting plate 201, an upper mounting plate 203 used for fixing the large end of the case body 3, a plurality of stand columns 204 arranged on the lower mounting plate 201 and used for fixing the upper mounting plate 203, and a plurality of mounting plates 205 arranged on the lower mounting plate 201 and used for positioning and fixing the water-cooling welding clamp 100 according to the welding positions of a boss piece. The mounting plate 205 is provided with a mounting hole. The water-cooled welding jig 100 is inserted into the mounting hole and is fixedly connected to the mounting plate 205. In the present embodiment, after the water-cooled welding jig 100 is inserted into the mounting hole, the baffle 12 fixed by the positioning seat 10 is fixed to the mounting plate 205, thereby fixing the water-cooled welding jig 100. According to the case body clamp 200, the case body 3 is arranged on the lower mounting plate 201, the edge plate of the small end of the case body 3 is tightly pressed and fixed on the lower mounting plate 201 through the pressing ring 202, and the upper mounting plate 203 is pressed on the large end of the case body 3 and fixed on the plurality of upright posts 204 on the lower mounting plate 201, so that the case body 3 is positioned and fixed; the plurality of water-cooling welding jigs 100 are installed through the plurality of installation plates 205 provided on the lower installation plate 201, and the plurality of bosses are fixed by the plurality of water-cooling welding jigs 100 to achieve welding of the plurality of bosses and the casing body 3. The heat of the welding position is absorbed by the heat dissipation structure 2 of the water-cooling welding fixture 100, and the heat of the heat dissipation structure 2 is absorbed in time by the cooling water in the water flow channel 5 between the positioning structure 1 and the heat dissipation structure 2, so that the heat dissipation performance and the heat dissipation effect of the heat dissipation structure 2 are improved, the deformation of the boss piece and the case body 3 caused by a large amount of heat generated in the welding process is avoided, and the flatness of the installation edge of the case body 3 after welding and the position degree of the boss piece are ensured to meet the requirements of products.
In the method for welding a multi-boss member and a casing according to the present embodiment, the plurality of water-cooling welding jigs 100 are used to fix a plurality of boss members, and the casing jig 200 is used to fix the casing 3 and the plurality of water-cooling welding jigs 100, respectively, and the method includes the following steps: fixing the case 3 on the case clamp 200; fixing the plurality of boss parts on the positioning mechanisms of the plurality of matched water-cooling welding fixtures 100 respectively; fixing the water-cooling welding fixtures 100 fixed with the bosses on the mounting plates 205 corresponding to the casing body fixtures 200 respectively; connecting an airflow channel 4 of the water-cooling welding fixture 100 with an air inlet pipeline, and respectively connecting a water inlet channel 6 and a water outlet channel 7 of the water-cooling welding fixture 100 with a water inlet pipeline and a water outlet pipeline; opening an air inlet pipeline to enable the protective gas to be completely replaced by the air around the boss part, and opening an air inlet pipeline and an air outlet pipeline to enable cooling water to be completely replaced by the air in the water inlet channel 6, the water flow channel 5 and the water drainage channel 7; welding the lug bosses at the corresponding positions of the case body 3 by using welding equipment, and continuously radiating and cooling by using protective gas and cooling water; and closing the air inlet pipeline and the water inlet pipeline after the machine box body 3 is cooled. The invention relates to a welding method of a multi-lug boss and a machine box body, which is characterized in that after the machine box body 3 and a plurality of water-cooling welding clamps 100 fixed with lug bosses are positioned and fixed by a machine box body clamp 200, the lug bosses are welded on the outer surface of the machine box body 3; the protective gas is conveyed to the periphery of the boss part before welding to completely replace the air around the boss part with the protective gas, so that the high-temperature metal at the welding seam is prevented from being oxidized by the air in the welding process; the cooling water starts to be welded after the water inlet channel 6, the water flow channel 5 and the water drainage channel 7 circulate, so that the cooling water continuously absorbs the heat of the heat dissipation structure 2 in the whole welding process, the heat dissipation performance of the heat dissipation structure 2 is improved, the heat dissipation structure 2 can continuously absorb the heat around a welding line, and the boss part and the case body 3 are prevented from being seriously deformed due to overhigh temperature; and after welding, the air inlet pipeline and the water inlet pipeline are closed until the case body 3 is cooled, so that the temperature of the case body 3 and the boss part is uniformly cooled, and the case body 3 and the boss part are prevented from deforming due to the residual stress after welding in the case body 3 and the boss part, thereby ensuring that the flatness of the mounting edge of the case body 3 and the position degree of the boss part meet the product requirements after the plurality of boss parts and the case body 3 are welded.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
according to the water-cooling welding fixture, the water flow channel is additionally arranged between the positioning structure and the heat dissipation structure and/or in the heat dissipation structure, the positioning structure is provided with the water inlet channel which is communicated with the water flow channel and is used for conveying cooling water and the water drainage channel which is used for discharging the cooling water, and the cooling water in the water flow channel is used for continuously taking away heat absorbed by the heat dissipation structure in the welding process, so that the heat dissipation performance of the heat dissipation structure is improved, the heat dissipation structure can continuously absorb heat around a welding line, and the boss part and the machine box body are prevented from being seriously deformed due to overhigh temperature; the airflow channel for conveying the protective gas for improving the quality of the welding seam is arranged in the positioning mechanism, and the water flow channel is arranged between the positioning structure and the heat dissipation structure and/or in the heat dissipation structure so as to realize the strict separation of the airflow channel and the water flow channel, ensure that the cooling water in the water flow channel and the water vapor generated when the cooling water absorbs the heat of the heat dissipation structure during welding are all blocked by the positioning mechanism and cannot enter the airflow channel and the boss part to pollute the welding seam.
According to the manufacturing method of the water-cooling welding fixture, the outer wall surface of the boss fixing end of the positioning structure is processed into the outer step surface, the inner wall surface of the heat dissipation structure is processed into the inner step surface which is matched and sleeved with the outer step surface, and the convex block is reserved at the outer step surface of the positioning structure or the inner step surface of the heat dissipation structure to separate a water flow channel and is processed at the opposite position, so that the operation is easy; the positioning structure and the heat dissipation structure are in sealed sleeve joint by performing bead welding and sealing on the joint surface of the inner step surface and the outer step surface along the periphery, so that a sealed water flow channel is formed between the inner step surface and the outer step surface; the tightness of the water flow channel is tested through a sealing test, and the water vapor generated when cooling water in the water flow channel and the cooling water absorb heat of the heat dissipation structure can not enter the air flow channel and the periphery of the boss part to pollute a welding seam in the using process of the water-cooling welding clamp.
According to the case body clamp, the case body is arranged on the lower mounting plate, the edge plate at the small end of the case body is pressed and fixed on the lower mounting plate through the pressing ring, and the upper mounting plate is pressed on the large end of the case body and fixed on the plurality of stand columns on the lower mounting plate, so that the case body is positioned and fixed between the upper mounting plate and the lower mounting plate; the plurality of water-cooling welding fixtures fixed with the lug bosses are arranged on the plurality of mounting plates on the lower mounting plate, and then the plurality of lug bosses are welded with the machine box body.
The invention relates to a welding method of a multi-lug boss and a machine box body, which is characterized in that after the machine box body is positioned and fixed by a machine box body clamp and a plurality of water-cooling welding clamps fixed with the lug boss, the lug boss is welded on the outer surface of the machine box body; the protective gas is conveyed to the periphery of the boss part before welding to completely replace the air around the boss part with the protective gas, so that the high-temperature metal at the welding seam is prevented from being oxidized by the air in the welding process; the cooling water starts to be welded after the water inlet channel, the water flow channel and the drainage channel circulate, so that the cooling water continuously absorbs the heat of the heat dissipation structure in the whole welding process, the heat dissipation performance of the heat dissipation structure is improved, the heat dissipation structure can continuously absorb the heat around a welding line, and the boss part and the case body are prevented from being seriously deformed due to overhigh temperature; and after welding is finished, the air inlet pipeline and the water inlet pipeline are closed until the machine case body is cooled, so that the temperature of the machine case body and the boss piece is uniformly cooled, the deformation of the machine case body and the boss piece caused by the residual stress after welding in the machine case body and the boss piece is avoided, and the flatness of the installation edge of the machine case body and the position degree of the boss piece after the plurality of boss pieces and the machine case body are welded can meet the product requirement.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A water-cooling welding fixture is used for positioning and cooling a boss part when the boss part is welded on a machine box body (3) in a water-cooling mode, and comprises a positioning structure (1) used for fixing and positioning the boss part at the welding position of the machine box body (3) and a cooling structure (2) used for cooling the boss part when the boss part is welded on the machine box body (3) in the water-cooling mode,
the first end of the heat dissipation structure (2) is sleeved on the boss fixed end of the positioning structure (1), the second end of the heat dissipation structure (2) is attached to the case body (3) to absorb heat generated during welding,
it is characterized in that the preparation method is characterized in that,
be equipped with in location structure (1) and be used for carrying protective gas to boss spare and case body (3) enclose air current passageway (4) in closing the cavity that forms, location structure (1) with between heat radiation structure (2) and/or be equipped with in heat radiation structure (2) and be used for utilizing the cooling water that flows to carry out heat dissipation refrigerated rivers passageway (5) to welding position, location structure (1) is equipped with inlet channel (6) that are used for carrying the cooling water and is used for discharging drainage channel (7) of cooling water, inlet channel (6) with drainage channel (7) respectively with rivers passageway (5) intercommunication.
2. The water-cooled welding jig of claim 1,
the outer wall surface of the boss fixed end of the positioning structure (1) is an outer step surface, the inner wall surface of the heat dissipation structure (2) is an inner step surface which is matched and sleeved with the outer step surface, the outer step surface is in sealed sleeve joint with the inner step surface, and a water flow channel (5) is formed between the outer step surface and the inner step surface.
3. The water-cooled welding jig of claim 1,
the water flow channel (5) is internally provided with a stop block (8) for separating the water flow channel (5), the stop block (8) separates the water flow channel (5) at the output end of the water inlet channel (6) from the water flow channel (5) at the input end of the drainage channel (7) so that cooling water enters from the water inlet channel (6) and then flows along the water flow channel (5) to absorb the heat of the heat dissipation structure (2) and then is discharged from the drainage channel (7).
4. The water-cooled welding jig of claim 1,
and an exhaust groove is formed in a binding surface between the heat dissipation structure (2) and the case body (3), and is used for exhausting air at a welding part of the boss part and the case body (3) and replacing the air with protective gas so as to realize gas protection of a welding line.
5. The water-cooled welding jig of claim 1, wherein the boss member is a long boss (300) having a threaded bore,
the positioning structure (1) comprises a positioning seat (10) for positioning a boss part, a pull rod (11) which is axially inserted into the positioning seat (10) and is in threaded connection with the boss part, a bushing (13) which is arranged between the positioning seat (10) and the pull rod (11) and is used for guiding the insertion of the pull rod (11), and a baffle (12) which is used for fixing and positioning the water-cooling welding clamp (100) on a machine box body clamp (200);
the inner cavity of the positioning seat (10) is sequentially provided with a first inner hole (101), a second inner hole (102) and a third inner hole (103) along the axis direction of the case body (3), the lining (13) is attached to the inner wall surface of the first inner hole (101), and the boss piece extends into the second inner hole (102) matched with the top end of the boss piece from the third inner hole (103) and is attached to the end surface of the lining (13);
the airflow channel (4) comprises an axial channel axially arranged in the pull rod (11) along the pull rod (11), a first radial channel radially arranged in the pull rod (11) along the pull rod (11) and communicated with the axial channel, a second radial channel radially arranged in the lining (13) along the lining (13) and communicated with the first radial channel, a first axial ventilation groove radially arranged on the outer surface of the lining (13) along the lining (13) and a second axial ventilation groove (108) axially arranged on the inner wall surface of the second inner hole (102) along the positioning seat (10) and communicated with the first axial ventilation groove.
6. The water-cooled welding jig of claim 1, wherein the boss member is a short boss (400) having a threaded bore,
the positioning structure (1) comprises a positioning seat (10) for positioning a boss part, a pull rod (11) which is axially inserted into the positioning seat (10) and is in threaded connection with the boss part, and a baffle (12) for fixing and positioning the water-cooling welding clamp on a machine box body clamp (200);
the inner cavity of the positioning seat (10) is sequentially provided with a first inner hole (101), a second inner hole (102) and a third inner hole (103) matched with the top end of a boss part along the axis direction of the case body (3), and the boss part is inserted into the third inner hole (103) and attached to the end face of the second inner hole (102);
airflow channel (4) include the edge pull rod (11) axial is located axial passage in pull rod (11), edge pull rod (11) radially locate in pull rod (11) with the radial passage of axial passage intercommunication, locate between first hole (101) with between second hole (102) and with annular groove (104) of radial passage intercommunication and locate annular groove (104) bottom is followed a plurality of axial air vent (105) of the circumference distribution of second hole (102), protective gas process enter behind axial air vent (105) boss spare and machine casket body (3) enclose in closing the cavity that forms.
7. The water-cooling welding fixture of claim 1, wherein the boss is a precision inner hole boss (500), two threaded holes are arranged on the end surface of the top end of the boss respectively at two sides of the precision inner hole,
the positioning structure (1) comprises a positioning seat (10) for positioning a boss piece, a blocking sleeve (14) which is inserted into the first end of the positioning seat (10) along the axial direction and is used for enabling the inside of the positioning seat (10) to form an airflow inner cavity, an air inlet pipe (15) which penetrates through the blocking sleeve (14) and is communicated with the airflow inner cavity, a pull rod (11) which extends into the positioning seat (10) along the axial direction and is in threaded connection with the top end of the boss piece, and a baffle (12) which is used for fixing and positioning the water-cooling welding clamp on a machine box body clamp (200);
the positioning seat (10) comprises a positioning groove (106) which is arranged at the second end of the positioning seat (10) and matched with the top end of the boss part and a plurality of vent holes (107) which are arranged on the periphery of the positioning groove (106) and communicated with the inner cavity of the air flow, and protective gas enters the cavity formed by the boss part and the case body (3) in a surrounding way after passing through the vent holes (107).
8. A method of manufacturing a water-cooled welding jig for manufacturing a water-cooled welding jig (100) according to any one of claims 1 to 7, comprising the steps of:
processing the outer wall surface of the boss fixing end of the positioning structure (1) into an outer step surface, processing the inner wall surface of the heat dissipation structure (2) into an inner step surface which is matched and sleeved with the outer step surface, and reserving a lug at the outer step surface of the positioning structure (1) or the inner step surface of the heat dissipation structure (2) for separating a water flow channel (5);
sleeving an outer step surface of the positioning structure (1) with an inner step surface of the heat dissipation structure (2), and performing bead welding sealing on a joint surface of the inner step surface and the outer step surface along the periphery;
and carrying out a sealing test to check the sealing effect of the water flow channel (5) between the inner step surface and the outer step surface.
9. A cartridge holder for fixing a cartridge (3) and installing the water-cooled welding holder (100) of any one of claims 1 to 7,
it is characterized in that the preparation method is characterized in that,
the case body clamp (200) comprises a lower mounting plate (201) for supporting the small end of the case body (3), a pressing ring (202) fixed on the lower mounting plate (201) and used for pressing and fixing the edge plate of the small end of the case body (3) on the lower mounting plate (201), an upper mounting plate (203) used for fixing the large end of the case body (3), a plurality of stand columns (204) arranged on the lower mounting plate (201) and used for fixing the upper mounting plate (203), and a plurality of mounting plates (205) used for positioning and fixing the water-cooling welding clamp (100) arranged on the lower mounting plate (201) according to the welding positions of boss pieces.
10. A method for welding a plurality of bosses and a case, wherein a plurality of bosses are respectively positioned and fixed by a plurality of water-cooling welding jigs (100) as set forth in any one of claims 1 to 7, and a case (3) and a plurality of the water-cooling welding jigs (100) are respectively fixed by a case jig (200) as set forth in claim 9,
the method comprises the following steps:
fixing the machine box body (3) on a machine box body clamp (200);
respectively fixing the plurality of boss parts on the positioning mechanisms of the plurality of matched water-cooling welding fixtures (100);
respectively fixing the water-cooling welding clamp (100) fixed with the boss piece on the mounting plates (205) corresponding to the case body clamp (200);
connecting an airflow channel (4) of the water-cooling welding fixture with an air inlet pipeline, and respectively connecting a water inlet channel (6) and a water drainage channel (7) of the water-cooling welding fixture (100) with a water inlet pipeline and a water outlet pipeline;
opening an air inlet pipeline to enable the protective gas to be completely replaced by the air around the boss part, and opening an air inlet pipeline and an water outlet pipeline to enable cooling water to be completely replaced by the air in the water inlet channel (6), the water flow channel (5) and the water drainage channel (7);
welding the lug bosses at the corresponding positions of the case body (3) by using welding equipment respectively, and continuously radiating and cooling by using protective gas and cooling water;
the air inlet pipeline and the water inlet pipeline are closed until the case body (3) is cooled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810489810.6A CN108655638B (en) | 2018-05-21 | 2018-05-21 | Water-cooling welding fixture and manufacturing method thereof, case body fixture and welding method thereof |
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| CN201810489810.6A CN108655638B (en) | 2018-05-21 | 2018-05-21 | Water-cooling welding fixture and manufacturing method thereof, case body fixture and welding method thereof |
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| CN108655638B true CN108655638B (en) | 2020-04-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109341959A (en) * | 2018-12-10 | 2019-02-15 | 中国航发贵州黎阳航空动力有限公司 | A kind of air-tight test fixture |
| CN110788543B (en) * | 2019-10-31 | 2021-02-09 | 中国航发南方工业有限公司 | Welding positioning device and welding positioning method for combined casing |
| CN111761279B (en) * | 2020-05-22 | 2021-04-23 | 柳州沪信汽车科技有限公司 | Exhaust manifold flange welding radiator |
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