CN114012215A - Titanium alloy long straight welding bead semi-automatic welding device and method - Google Patents
Titanium alloy long straight welding bead semi-automatic welding device and method Download PDFInfo
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- CN114012215A CN114012215A CN202111390570.2A CN202111390570A CN114012215A CN 114012215 A CN114012215 A CN 114012215A CN 202111390570 A CN202111390570 A CN 202111390570A CN 114012215 A CN114012215 A CN 114012215A
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- 238000003466 welding Methods 0.000 title claims abstract description 223
- 239000011324 bead Substances 0.000 title claims abstract description 41
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 18
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 215
- 229910052786 argon Inorganic materials 0.000 claims abstract description 108
- 239000007789 gas Substances 0.000 claims abstract description 44
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 claims 2
- 238000009434 installation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 150000001485 argon Chemical class 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K9/235—Preliminary treatment
-
- 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
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
-
- 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
- B23K9/32—Accessories
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
A titanium alloy long straight welding bead semiautomatic welding device and a method thereof are provided, the titanium alloy long straight welding bead semiautomatic welding device comprises a welding assembly and a guide assembly; the guide assembly comprises a guide rail assembly arranged longitudinally and a slide rail rod arranged transversely; the welding device also comprises a driving assembly used for driving the welding assembly to move along the guide assembly, wherein the driving assembly comprises a lower driving piece matched with the guide rail assembly and an upper driving piece matched with the sliding rail rod; the welding assembly is connected with the slide rail rod; the welding assembly comprises a positioning block for clamping the slide rail rod, a connecting plate connected with the positioning block, an adjuster arranged at the other end of the connecting plate, a welding gun clamp fixed on the adjuster, a welding gun clamped on the welding gun clamp, and an argon gas hood arranged on the welding gun clamp; the regulator comprises a height regulator and an angle regulator capable of regulating the angle. The invention improves the production efficiency, improves the mechanical property of the welding joint and improves the quality of the titanium alloy structural member.
Description
Technical Field
The invention belongs to the technical field of semi-automatic welding of titanium alloy structural parts, and particularly relates to a semi-automatic welding device and method for a long straight welding bead of a titanium alloy structural part.
Background
Taking the support frame to be applied to the rocket gun as an example, when the rocket gun rotates and launches, the support frame bears the reaction force of the rotation and the launch of the rocket gun, the stable in structure of the support frame is to guarantee the normal work foundation of the rocket gun, if the support frame with unstable structure is used for the rocket gun, the rocket gun has the risk of dropping, and the rocket gun can cause major safety accidents once dropping.
Taking the support frame on the fire engine as an example, can give when the fire control unit rotates or high-pressure water spray and have a reaction force to the support frame, the stable in structure of support frame guarantees the normal basis of work of fire control unit, if the unstable support frame of structure is used for the fire control unit, the risk that the fire control unit dropped, the fire control unit in case drops and will cause major safety accident.
Titanium alloys are alloys based on titanium with other elemental compositions added. In recent industry, titanium alloy has become the first choice material for high performance structural members due to its excellent characteristics of high strength, corrosion resistance and heat resistance.
Titanium alloy is selected for welding to manufacture the support frame for a rocket gun or a fire engine, the length of the welding bead is a long welding bead with the length of more than 500mm, high-quality welding of the support frame is guaranteed, the support frame with a stable structure is obtained, and hidden dangers of safety accidents can be reduced.
The titanium alloy has active chemical properties, and solidified parts are easy to absorb hydrogen and oxygen in a high-temperature state in the welding process, so that the welding quality is poor. If the support frame with local oxidation is used on a rocket gun or a fire engine, weld bead cracking can occur, and serious safety accidents are caused.
The titanium alloy structural part is welded by manual argon arc welding, the requirement on the operation level of a welder is high, the angle of the welding gun and the swing amplitude of the welding gun can influence the welding quality during welding, and the welding quality is poor due to the fact that the welder is unstable. Meanwhile, manual welding is adopted, so that the welding efficiency is low and the welding quality is difficult to ensure. Meanwhile, two persons are needed to operate cooperatively during manual welding, and one person welds the other person and holds the argon filling device to carry out argon protection on the solidified part in the high-temperature state. The requirement on the operation level of a welder is high, and the welding efficiency is low. Because people can be influenced by factors such as environment, the situation of unstable protection can occur, the welding bead quality is unstable, the welding bead local oxidation phenomenon occurs, and the welding quality is low.
For titanium alloy structural members on rocket guns, because the batch size is small, if the robot welding is adopted, each workpiece needs to be programmed independently, the cost is high, and the efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects in the technical aspect of titanium alloy welding, and provides a titanium alloy long straight welding bead semi-automatic welding device, which improves the production efficiency, improves the mechanical property of a welding joint (namely a welding bead), improves the quality of a titanium alloy structural part, and reduces the potential safety hazard when a welding part is used.
The invention also aims to provide a semi-automatic welding method for the long straight welding bead of the titanium alloy.
The technical scheme of the invention is as follows: comprises a welding component and a guiding component; the guide assembly comprises a guide rail assembly arranged longitudinally and a slide rail rod arranged transversely;
the welding device also comprises a driving assembly used for driving the welding assembly to move along the guide assembly, wherein the driving assembly comprises a lower driving piece matched with the guide rail assembly and an upper driving piece matched with the sliding rail rod;
the welding assembly is connected with the slide rail rod;
the welding assembly comprises a positioning block for clamping the slide rail rod, a connecting plate connected with the positioning block, an adjuster arranged at the other end of the connecting plate, a welding gun clamp fixed on the adjuster, a welding gun clamped on the welding gun clamp, and an argon gas hood arranged on the welding gun clamp; the regulator comprises a height regulator and an angle regulator capable of regulating the angle.
The regulator comprises a connecting bent plate for connecting the height regulator and the angle regulator, an L-shaped connecting plate capable of fixing the welding gun clamp and the angle regulator and having adjustable height, an argon cover clamp arranged on the left end face of the welding gun clamp, and an argon cover clamped on the argon cover clamp.
The lower driving part comprises a lower driving box, and the upper driving part comprises an upper driving box; supporting wheels which are matched with the guide rail assemblies to slide are arranged on two sides of the lower driving box; an upper driving box installed on the lower driving box; the control assembly for controlling the action of the driving assembly is in contact connection with the right end face of the upper driving box and the upper end face of the lower driving box;
when a long straight welding bead of titanium alloy is welded, a workpiece is placed on an argon tank, so that a welding seam is positioned above the center of the argon tank, and the argon in the argon tank can protect the back of the workpiece; the front side of the workpiece moves along with the welding gun through the argon cover on the welding gun clamp, and the solidified part of the front side of the welded workpiece in a high-temperature state can be protected in real time through the argon blown out of the argon cover.
The upper driving box and the lower driving box are internally provided with a driving motor and a gear, the gear is arranged on an upper output shaft of the driving motor, the gear of the lower driving box is matched with the guide rail assembly, and the gear of the upper driving box is matched with the sliding rail rod. The upper driving box drives the sliding rail bar to move, and the lower driving box drives the whole control assembly to move. The gear of the upper driving box is matched with the sliding rail rod to work, and the gear of the lower driving box is matched with the guide rail component to work.
The argon gas cover comprises a cover body, an air inlet pipe is arranged in the cover body, the air inlet pipe is an air inlet connected with argon gas at the inner end of an annular pipe which is formed by spirally winding the pipe in the plane direction, a plurality of air outlets are arranged on the upper surface of the annular pipe, and the outer end of the annular pipe is closed.
The upper end face of the positioning block is provided with a threaded hole, the front end face of the positioning block is provided with a clamping groove matched with the slide rail rod, the threaded hole penetrates through the clamping groove, and the end face of the positioning block is provided with an adjusting knob which is matched with the threaded hole in the positioning block and is provided with a screw rod.
The angle regulator comprises a motor box, a motor embedded in the motor box and a height adjusting clamp matched with a motor output shaft.
The welding gun clamp comprises a front clamp plate and a rear clamp plate, a connecting pin for connecting the front clamp plate and the rear clamp plate is used for adjusting an adjustable pin for opening the front clamp plate and the rear clamp plate, and a hole matched with the connecting pin and a clamping groove matched with the adjustable pin are respectively formed in the front clamp plate and the rear clamp plate.
The argon gas cover clamp comprises a fixed seat fixed on the welding gun clamp, an arc plate matched with the fixed seat and two adjusting bolts.
The guide rail assembly comprises a magnetic suction block, a trapezoidal connecting beam arranged on the magnetic suction block, and a guide rail support frame arranged on the trapezoidal connecting beam, wherein the upper end surface of the guide rail support frame is provided with a clamping groove for installing a guide rail bar, and the guide rail bar is embedded and arranged on the guide rail support frame. The guide rail bar is matched with the lower driving box, and the magnetic suction block is a bottom supporting switch, so that the whole device can be stably sucked on the workbench.
A titanium alloy long straight welding bead semi-automatic welding method is characterized in that: the method comprises the following steps:
1) assembling and spot-welding the workpieces to be welded firmly;
2) placing the workpiece fixed by spot welding on an argon gas tank, wherein a welding seam is arranged above the center of the argon gas tank, and the argon gas in the argon gas tank protects the back of the workpiece;
3) installing a welding assembly, a guide assembly, a driving assembly and a control assembly; the position of a welding gun is adjusted through a height adjuster and an angle adjuster of the welding assembly, the height distance between the welding gun and a welding bead is 2 +/-0.05 mm, and the angle is 15 +/-1 degrees;
setting the current on a welding machine to be 90-130A, adjusting the flow of protective gas of a welding gun on an argon bottle to be 10 +/-3L/min, and adjusting the walking speed of the welding gun to be 27-32cm/min by a control assembly;
4) introducing gas into the argon hood for 3-5 minutes, introducing gas into the argon tank for 12-15 minutes, and starting welding after the gas introduction is finished;
5) in the welding process, an operator observes a welding bead and finely adjusts the path of a welding gun through a control assembly in real time, so that the welding gun is always in the center of the welding bead, the distance between the welding gun and the height of the welding bead is 2 +/-0.05 mm, and the path of the welding gun is kept to be a straight line;
6) and after the arc quenching is finished, continuously ventilating the argon tank and the argon hood for 2-3 minutes.
Further, the bottom of the guide rail component is provided with a magnetic suction block.
Further, the argon shield is designed to be in an eccentric structure.
The invention has the beneficial effects that:
1. the invention provides a semi-automatic welding device and method for a titanium alloy structural member. The argon gas cover is clamped on the clamp, and can be linked with the argon arc welding gun in the welding process, so that the welding can be completed by only one person, the production efficiency is improved, and the labor cost is reduced. Meanwhile, the designed argon cover structure is a circular eccentric structure, and the workpiece is placed on the argon groove, so that the area near the solidified part in a high-temperature state in the titanium alloy welding process can be better protected, and the welding quality of the titanium alloy structural member is improved.
2. The invention is also suitable for welding of more active materials such as aluminum alloy and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a rail assembly;
fig. 3 is a schematic connection diagram of the lower driving box 332, the upper driving box 331 and the control component;
FIG. 4 is a schematic view of a welding operation;
FIG. 5 is a schematic view of a welded assembly;
FIG. 6 is a schematic view of the argon shield configuration I (with the annular tube below the bottom surface of the upper sealing plate 1821 of the thick cylindrical section);
FIG. 7 is a cross-sectional view C-C of FIG. 6;
FIG. 8 is a perspective view of FIG. 6;
fig. 9 is a structural schematic diagram of the argon gas hood ii (the annular tube is located below the bottom surface of the thin cylindrical section upper closing plate 1810);
FIG. 10 is a perspective view of FIG. 9;
FIG. 11 is a schematic structural view of an argon arc welding gun;
FIG. 12 is a schematic structural view of an argon shield clamp;
FIG. 13 is a schematic view of the structure of an argon gas tank;
FIG. 14 is a cross-sectional view B-B of FIG. 13;
fig. 15 is a perspective view of fig. 13.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
The structure of the titanium alloy automatic welding device is shown in figures 1-3, and comprises a guide rail assembly 22, a lower driving box 332, an upper driving box 331, a control assembly 23 and a welding assembly 24. The control component 23 for controlling the actions of the upper driving box 331 and the lower driving box 332 is connected with the right end surface of the upper driving box 331 and the upper end surface of the lower driving box 332 in a contact manner.
The welding module 24 is connected to the control module 23. The welding assembly 24 is connected with the control assembly 23 through the slide rail rod 21. The welding assembly 24 comprises a positioning block 11 for clamping a slide rail rod 21, a connecting plate 12 connected with the positioning block 11, a height adjuster 13 arranged at the other end of the connecting plate 12, an angle adjuster 15 capable of adjusting the angle, a connecting bent plate 14 for connecting the height adjuster 13 and the angle adjuster 15, a welding gun clamp 20, an argon arc welding gun 17 clamped on the welding gun clamp 20, an L-shaped connecting plate 16 capable of adjusting the height for fixing the welding gun clamp 20 and the angle adjuster 15, an argon shield clamp 19 arranged on the left end face of the welding gun clamp 20, and an argon shield 9 clamped on the argon shield clamp 19.
When the lower driving box 332 moves, the supporting wheels support the lower driving box 332 to move on the guide rail assembly 22, the corner connecting frames connected with the supporting wheels and the lower driving box are connected to form the lower driving box which can slide on the guide rail assembly 22, the upper driving box 331 is installed on the upper surface of the lower driving box 332, and the lifting handle 333 installed at the rear surface of the upper driving box facilitates the moving of the equipment. During welding, the guide rail assembly 22 can be directly adsorbed on a workpiece or a workbench through the magnetic block 10, so that stable walking of the argon arc welding gun 17 is ensured. The control assembly 23 is placed on the guide rail assembly 22, the lower driving box 332 is matched with the guide rail assembly 22 through the guide rail strip 224, the upper driving box 331 is connected with the welding assembly 23 through the slide rail rod 21, the control assembly 23 drives the argon arc welding gun 17 to move longitudinally through moving longitudinally on the guide rail assembly 22, the control assembly 23 drives the argon arc welding gun 17 to move transversely through controlling the slide rail rod 21 to move transversely, and the control assembly 23 can control the movement speed and direction of the argon arc welding gun 17 and control the start and stop of welding. The welding assembly 24 can complete the welding of the weld joint, and the angle of the argon arc welding gun 17 can be adjusted through the angle adjuster 15.
The guide rail assembly 22 comprises a magnetic block 10, a trapezoidal connecting beam 222 installed on the magnetic block, a guide rail support frame 223 installed on the trapezoidal connecting beam 222, a clamping groove for installing a guide rail bar arranged on the upper end face of the guide rail support frame, and a guide rail bar 224 installed on the guide rail support frame in an embedded mode. The guide rail 224 is matched with the lower driving box 332, and the magnetic block 10 is a bottom supporting switch, so that the whole device can be stably adsorbed on the workbench.
In fig. 4, during welding operation, the workpiece 8 is placed on the argon gas tank 9, the argon gas tank 9 is placed on the working platform, the welding seam of the workpiece 8 is in the middle of the argon gas tank 9, argon gas is filled into the argon gas tank 9, and the protection of the back of the workpiece 8 can be realized.
In fig. 5, the welding assembly 24 includes a positioning block 11, which is fitted with the rail bar 21. The device comprises a height adjuster 13, a connecting plate 12, an angle adjuster 15, a connecting bent plate 14, a welding gun clamp 20, an L-shaped connecting plate, an argon arc welding gun 17, an argon shield 18 and an argon shield clamp 19, wherein the connecting plate 12 is assembled with a positioning block 11 and the height adjuster 13 in a matched mode, the L-shaped connecting plate is connected with the height adjuster 13 and the angle adjuster 15, the L-shaped connecting plate is connected with the angle adjuster 15 and the welding gun clamp 20, and the argon shield clamp 19 is installed on the welding gun clamp 20 and can clamp the argon shield 18. The positioning block 11 can adjust the clamping and the loosening of the slide rail rod 21 through a knob on the positioning block 11, the positioning block 11 is matched with the slide rail rod 21 to assemble the slide rail rod 21 to be inserted into a positioning hole of the positioning block 11, the slide rail rod is tightly pressed by screwing a bolt on the positioning block 11, and the whole control assembly 23 and the whole welding assembly 24 are connected. The height adjuster 13 can adjust the relative height position between the connecting plate 12 and the argon arc welding gun by rotating an adjusting knob on the height adjuster, thereby adjusting the height of the argon arc welding gun. The angle regulator 15 comprises a motor box and a height adjusting clamp, a motor in the motor box can drive the height adjusting clamp 16 to rotate during operation, the height adjusting clamp 16 is an L-shaped connecting plate, and then the L-shaped connecting plate is driven to rotate to adjust the angle of the argon arc welding gun. The welding gun clamp 20 can clamp and release the argon arc welding gun 17 through the adjustment of a knob on the welding gun clamp.
Argon gas cover anchor clamps 19 are installed in welder anchor clamps 20 side, and when welding titanium alloy structure spare, argon gas cover anchor clamps 19 press from both sides tight argon gas cover 18 and move along with argon arc welder's motion, make the argon gas can protect the near region of solidification position, and argon gas cover 18 sets up to eccentric structure can make the argon gas more be close to the molten bath, and then makes to have more sufficient argon gas protection around the welding molten bath, and then improves the welded joint quality.
In fig. 6, 7 and 8, the argon gas hood 18 includes a hood body, the opening at the lower end of the hood body is an air outlet opening 187, an air inlet pipe is arranged in the hood body, the air inlet pipe is a ring-shaped pipe 183 spirally wound in a plane direction, the inner end 186 of the ring-shaped pipe is an air inlet connected with argon gas, a plurality of air outlets 185 are arranged on the upper surface of the ring-shaped pipe 183, and the outer end 184 of the ring-shaped pipe is a closed opening.
The cover body is a thick cylindrical section 182, and the thick cylindrical section 182 comprises a thick cylindrical section upper sealing plate 1820 and a thick cylindrical section side sealing plate 1821; the thick cylindrical section upper sealing plate 1820 is eccentrically connected with a thin cylindrical section 181, the thin cylindrical section 181 is connected with the argon shield clamp 19, the inner cavity of the thin cylindrical section 181 is not communicated with the inner cavity of the thick cylindrical section 182, and the annular tube 183 is arranged below the bottom surface of the thick cylindrical section upper sealing plate 1821 (as shown in fig. 8). The air outlets 185 are uniformly distributed on the upper surface of the ring-shaped pipe 183. The aperture of the outlet 185 is 3 mm.
In fig. 9 and 10, the cover body is of a step-shaped structure and comprises a thin cylindrical section 181 positioned at the upper part and a thick cylindrical section 182 positioned at the lower part, the thin cylindrical section 181 and the thick cylindrical section 182 are eccentrically arranged, and the thin cylindrical section 181 is connected with the argon cover clamp 19; the thin cylindrical section 181 comprises a thin cylindrical section upper sealing plate 1810 and a thin cylindrical section side sealing plate 1811; the thick cylindrical section 182 comprises a thick cylindrical section upper seal plate 1820 and a thick cylindrical section side seal plate 1821; the inner cavity of the thin cylindrical section 181 is communicated with the inner cavity of the thick cylindrical section 182, and the annular tube 183 is arranged below the bottom surface of the upper sealing plate 1810 of the thin cylindrical section.
In fig. 11, the argon arc welding gun includes a welding gun holder 20, a welding gun 17 held in the welding gun holder 20, and an argon gas cover 18 attached to the welding gun holder 20. An argon gas cover 18 is attached to a torch holder 20 via an argon gas cover holder 19. The welding gun clamp 20 comprises a front clamp plate and a rear clamp plate, a connecting pin for connecting the front clamp plate and the rear clamp plate, and an adjustable pin for adjusting the opening size of the front clamp plate and the rear clamp plate, wherein the front clamp plate and the rear clamp plate are respectively provided with a hole matched with the connecting pin and a clamping groove matched with the adjustable pin.
In fig. 12, the argon shield clamp 19 includes a fixing base 191 fixed to the welding gun clamp 20, an arc plate 192 engaged with the fixing base 191, and two adjusting bolts 193.
In fig. 13, 14 and 15, a clapboard with holes is arranged in an argon groove 9, an air inlet hole is arranged on the side surface of the argon groove, and an argon pipe is inserted above the air inlet hole to blow air into the argon groove 9.
When welding a long straight welding bead of titanium alloy, firstly, the workpieces are connected by spot welding, the spot-welded workpieces are placed on an argon tank, a welding seam is arranged above the center of the argon tank, and argon in the argon tank 9 can protect the back of the workpieces. The argon gas cover 18 on the workpiece front welding gun clamp 20 moves along with the welding gun 17, and the argon gas blown out from the argon gas cover 18 can protect the solidified part of the front high-temperature state of the welded workpiece in real time. The method comprises the following specific steps:
1. assembling and spot-welding the workpieces to be welded firmly;
2. placing the workpiece fixed by spot welding on an argon tank;
3. welding parameters are set. The position of a welding gun is adjusted through a height adjuster 13 and an angle adjuster 15 of a welding assembly 24, the distance between the welding gun and the height of a welding bead is 2mm, and the angle is 15 degrees; setting the current on a welding machine to be 90-130A, adjusting the flow of protective gas of a welding gun on an argon bottle to be 10L/min, and adjusting the walking speed of the welding gun to be 27-32cm/min by a control assembly;
4. ventilating an argon tank for 12-15 minutes, ventilating an argon cover for 3-5 minutes, and then starting welding;
5. in the welding process, an operator observes a welding bead and finely adjusts the path of a welding gun in real time;
6. and after the arc quenching of the welding is finished, the ventilation is continued for 2 minutes.
During welding, workpieces are connected in a spot welding mode, the workpieces which are firmly welded in the spot welding mode are placed on the welding device to be welded, welding beads can deviate due to welding deformation in the welding process, therefore, an operator observes a welding bead molten pool during welding, the walking track of the welding gun is finely adjusted in real time according to the deviation condition of the welding beads, and the welding gun is enabled to be always over against the center of the welding beads and 2mm away from the welding beads. The welding parameters used for the workpieces with different plate thicknesses during welding are shown in table 1.
Claims (10)
1. The utility model provides a titanium alloy long straight welding bead semi-automatic welding device which characterized in that: comprises a welding component (24) and a guiding component; the guide assembly comprises a guide rail assembly (22) arranged longitudinally and a slide rail rod (21) arranged transversely;
the welding device also comprises a driving assembly for driving the welding assembly (24) to move along the guide assembly, wherein the driving assembly comprises a lower driving piece matched with the guide rail assembly (22) and an upper driving piece matched with the sliding rail rod (21);
the welding assembly (24) is connected with the slide rail rod (21);
the welding assembly (24) comprises a positioning block (11) for clamping the slide rail rod (21), a connecting plate (12) connected with the positioning block (11), an adjuster arranged at the other end of the connecting plate (12), a welding gun clamp (20) fixed on the adjuster, a welding gun (17) clamped on the welding gun clamp (20), and an argon cover (18) arranged on the welding gun clamp (20); the adjuster comprises a height adjuster (13) and an angle adjuster (15) capable of adjusting the angle.
2. The titanium alloy long straight bead semiautomatic welding device according to claim 1, wherein: the regulator comprises a connecting bent plate (14) connected with a height regulator (13) and an angle regulator (15), an L-shaped connecting plate (16) capable of fixing the height of a welding gun clamp (20) and the angle regulator (15), an argon cover clamp (19) arranged on the left end face of the welding gun clamp (20), and an argon cover (18) clamped on the argon cover clamp (19).
3. The titanium alloy long straight bead semiautomatic welding device according to claim 1, wherein: the lower driving member comprises a lower driving box (332), and the upper driving member comprises an upper driving box (331); supporting wheels which are matched with the guide rail assembly (22) to slide are arranged on two sides of the lower driving box (332); an upper drive cassette (331) mounted above the lower drive cassette (332); the control component (23) for controlling the action of the driving component is in contact connection with the right end face of the upper driving box (331) and the upper end face of the lower driving box (332);
and the upper drive box (331) and the lower drive box (332) are internally provided with a drive motor and a gear, the gear is arranged on an upper output shaft of the drive motor, the gear of the lower drive box (332) is matched with the guide rail assembly (22), and the gear of the upper drive box (331) is matched with the slide rail rod (21).
4. The titanium alloy long straight bead semiautomatic welding device according to claim 1, wherein: the argon gas hood (18) comprises a hood body, wherein an air inlet pipe is arranged in the hood body, the air inlet pipe is an annular pipe (183) which is formed by spirally winding one pipe in the plane direction, the inner end (186) of the annular pipe is an air inlet connected with argon gas, a plurality of air outlets (185) are arranged on the upper surface of the annular pipe (183), and the outer end (184) of the annular pipe is closed in a closed mode.
5. The titanium alloy long straight bead semiautomatic welding device according to claim 1, wherein: the upper end face of the positioning block (11) is provided with a threaded hole, the front end face of the positioning block is provided with a clamping groove matched with the sliding rail rod (21), the threaded hole penetrates through the clamping groove, and the upper end face of the positioning block (11) is provided with an adjusting knob which is matched with the threaded hole in the positioning block and is provided with a screw.
6. The titanium alloy long straight bead semiautomatic welding device according to claim 1, wherein: the angle regulator (15) comprises a motor box, a motor embedded in the motor box and a height adjusting clamp (16) matched with the output shaft of the motor.
7. The titanium alloy long straight bead semiautomatic welding device according to claim 1, wherein: the welding gun clamp (20) comprises a front clamp plate and a rear clamp plate, a connecting pin for connecting the front clamp plate and the rear clamp plate is used for adjusting an adjustable pin for opening the front clamp plate and the rear clamp plate, and a hole matched with the connecting pin and a clamping groove matched with the adjustable pin are respectively formed in the front clamp plate and the rear clamp plate.
8. The titanium alloy long straight bead semiautomatic welding device according to claim 1, wherein: the argon gas cover clamp (19) comprises a fixed seat (191) fixed on the welding gun clamp (20), an arc plate (192) matched with the fixed seat (191), and two adjusting bolts (193).
9. The titanium alloy long straight bead semiautomatic welding device according to claim 1, wherein: guide rail subassembly (22) are including magnetism piece (10) of inhaling, install trapezoidal tie-beam (222) on magnetism piece, install guide rail support frame (223) on trapezoidal tie-beam (222), and guide rail support frame up end is provided with the draw-in groove of installation guide rail strip to and inlay guide rail strip (224) of installing on guide rail support frame.
10. A titanium alloy long straight welding bead semi-automatic welding method is characterized in that: the method comprises the following steps:
1) assembling and spot-welding the workpieces to be welded firmly;
2) placing the workpiece (8) fixed by spot welding on an argon tank (9), wherein a welding line is arranged above the center of the argon tank, and argon in the argon tank protects the back of the workpiece;
3) the device comprises a mounting welding assembly (24), a guide assembly (22), a driving assembly and a control assembly (23); the position of a welding gun is adjusted through a height adjuster (13) and an angle adjuster (15) of the welding assembly (24), the distance between the welding gun and the height of a welding bead is 2 +/-0.05 mm, and the angle is 15 +/-1 degrees;
setting the current on a welding machine to be 90-130A, adjusting the flow of protective gas of a welding gun on an argon bottle to be 10 +/-3L/min, and adjusting the walking speed of the welding gun to be 27-32cm/min by a control assembly;
4) introducing gas into the argon hood for 3-5 minutes, introducing gas into the argon tank for 12-15 minutes, and starting welding after the gas introduction is finished;
5) in the welding process, an operator observes a welding bead and finely adjusts the path of the welding gun through the control assembly (23) in real time, so that the welding gun is always in the center of the welding bead, the distance between the welding gun and the height of the welding bead is 2 +/-0.05 mm, and the path of the welding gun is kept to be a straight line;
6) and after the arc quenching is finished, continuously ventilating the argon tank (9) and the argon hood (18) for 2-3 minutes.
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| CN111633364A (en) * | 2020-06-10 | 2020-09-08 | 江苏瑞伯特智能科技股份有限公司 | Single-side welding and double-side forming welding robot |
| CN111872520A (en) * | 2020-07-21 | 2020-11-03 | 江麓机电集团有限公司 | Titanium alloy butt fusion electrode inert gas protection welding device and welding process |
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| US4672173A (en) * | 1985-02-28 | 1987-06-09 | Nippon Kokan Kabushiki Kaisha | Gas-shielded arc welding apparatus |
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Application publication date: 20220208 |