CN110449695B - Flange welding process with main shaft rotating by 90 degrees - Google Patents
Flange welding process with main shaft rotating by 90 degrees Download PDFInfo
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- CN110449695B CN110449695B CN201910543285.6A CN201910543285A CN110449695B CN 110449695 B CN110449695 B CN 110449695B CN 201910543285 A CN201910543285 A CN 201910543285A CN 110449695 B CN110449695 B CN 110449695B
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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
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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
- B23K9/235—Preliminary treatment
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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
- B23K9/32—Accessories
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Abstract
The invention discloses a flange welding process with a main shaft rotating by 90 degrees, which comprises the following steps: the welding method comprises the following process steps of pre-splicing, preheating, 90-degree rotation fixing, welding, tempering and the like, the process is improved from horizontal welding of a main shaft to vertical welding of 90 degrees, and then the position improvement of a welding spot of a welding gun is combined, so that the operation of the welding gun is more convenient to adjust, and the position of a groove is more easily and accurately aligned.
Description
Technical Field
The invention relates to the technical field of flange welding, in particular to a flange welding process with a main shaft rotating by 90 degrees.
Background
The traditional shaft welding is performed by horizontally welding workpieces, because the two large flange surfaces are provided with grooves of 18mm, but because the size of 18mm is smaller than that of a welding gun protective sleeve, a welding gun can only reach the surfaces of the grooves, the dry extension welding current loss of a welding wire is large, and the penetration cannot be ensured;
secondly, the traditional welding process does not thoroughly and effectively clean welding slag and coating at a welding bead, and because of the foundation of the former welding and the latter welding, the operation and equipment for timely and effectively discharging the welding bead do not exist, the welding quality of the latter welding seam is seriously influenced, and the whole final welding effect is further influenced;
in the welding process, the welding technologies of the first few welding processes are critical, so that the welding point position selected by the welding gun is critical, but the current welding point design of the welding gun is not reasonable enough, so that the firmness of the welded welding line is poor.
Disclosure of Invention
Aiming at the existing problems, the invention aims to provide a flange welding process with a main shaft rotating by 90 degrees, the process improves the horizontal welding of the main shaft and the vertical welding by 90 degrees, and further combines the position improvement of a welding spot of a welding gun, so that the operation of the welding gun is more convenient to adjust, and the position of a groove is more easily and accurately aligned.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the flange welding process with the main shaft rotating by 90 degrees comprises the following steps:
s1: pre-splicing
Sleeving a large flange and a small flange on a main shaft according to the requirements of a drawing, and fixing the large flange and the small flange on the non-groove side in a spot welding manner;
s2: preheating
Preheating the spot-welded main shaft by using an oven at the temperature of 230 ℃, and keeping the temperature for 1 hour until the temperature of the workpiece is 150-200 ℃;
s3: spindle 90-degree rotary mounting
Hoisting the preheated main shaft and the handrail shaft to a welding workstation, and vertically fixing the main shaft by a 90-degree fixing device;
s4: welding of
First welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is a fit clearance between the shaft and the flange;
and (3) second welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the outer side weld toe position of the first welding seam, and the error is within 1.5 mm;
and (3) third welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the inner side weld toe position of the second welding seam, and the error is within 1.5 mm;
and fourth welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the alignment position of the welding wire is the inner side weld toe position of the third welding seam, and the error is 1.5 mm;
and fifth welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the outer side weld toe position of the fourth welding seam, and the error is within 1.5 mm;
and sixth welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the inner side weld toe position of the fifth welding seam, and the error is within 1.5 mm;
s5: tempering destressing
Tempering at the temperature of 625 +/-25 ℃, preserving heat for 2-3 hours, and then cooling along with the furnace to eliminate internal residual stress;
s6: and (4) carrying out nondestructive testing.
Preferably, the sizes of welding materials selected for welding the first welding to the sixth welding are all phi 1.2 mm.
Preferably, the current intensity of the first welding is 300A, the current intensity of the second welding is 280A, and the current intensity of the third welding to the sixth welding is 270A.
Preferably, the voltage intensity of the first welding to the fifth welding is 27V, and the voltage intensity of the sixth welding is 26V.
Preferably, the welding speeds of the first welding, the second welding, the fifth welding and the fifth welding are all 50mm/s, and the welding speeds of the third welding and the sixth welding are all 60 mm/s.
Preferably, the interlayer temperature needs to be controlled to be 100-180 ℃ in the welding process.
Preferably, the 90-degree fixing device comprises a vertical pile, an automatic pressing device fixed on the vertical pile and a lower clamping device arranged on the welding workstation, the lower clamping device and the automatic pressing device are arranged in a vertically corresponding mode, and the automatic pressing device can freely move up and down on the vertical pile under the control of the control module.
Preferably, the bottom of the main shaft is placed in the lower clamping device through a mechanical arm, and the top of the main shaft is automatically pressed through the automatic pressing device, so that the main shaft is rotatably mounted by 90 degrees.
Preferably, the welding method further comprises a welding bead cleaning step, wherein welding slag and coating at the welding seam are removed through cleaning equipment after each welding is finished.
As preferred, cleaning equipment sets up on vertical pile, including cleaning unit one and cleaning unit two, cleaning unit one with cleaning unit two all rotates the setting and is in on the vertical pile, its power source is the cylinder, and cleaning unit one with cleaning unit two all includes air impact cleaner and friction cleaner, and cleaning unit one and cleaning unit two are cleared up from the both sides relative motion of welding seam, combine the friction cleaning to thoroughly clear away welding slag and coating when the air impact is cleared up.
The invention has the beneficial effects that:
firstly, the horizontal welding of the main shaft is improved to be vertical welding, the traditional shaft type welding is performed by welding workpieces horizontally, but the main shaft is welded vertically by rotating the main shaft by 90 degrees. Because the two large flange surfaces are provided with grooves with the thickness of 18mm, the vertical rear welding gun can adjust the angle and align the bottoms of the grooves more easily. However, the size of 18mm is smaller than that of the welding gun protective sleeve, so that the welding gun can only reach the surface of the groove, and the welding current loss of the dry extension welding of the welding wire is large, so that the current welding parameters are determined on the premise of ensuring the penetration through multiple attempts;
secondly, in order to make the position of the main shaft at 90 degrees more stable, the main shaft is realized by a 90-degree fixing device, because if the verticality of the main shaft in the 90-degree welding process is not improved, the welding track of a welding gun can be influenced, and the quality of a welding seam is further influenced, after the 90-degree fixing device is adopted, the higher verticality can be always kept in the main shaft welding process;
in order to improve the welding quality of each welding pass in multiple welding passes, the invention adopts improved cleaning equipment to clean the welded previous welding pass in time and efficiently, so that no impurity is left on the welding surface during the welding of the next welding pass, and the aim of improving the welding quality is fulfilled.
Drawings
FIG. 1 is a weld drawing of a spindle according to the present invention.
Fig. 2 is a cross-sectional view taken along plane C-C of fig. 1.
FIG. 3 is a schematic view of a weld spot of the welding torch.
Fig. 4 is a schematic view of a rotary table of the welding apparatus of the present invention.
FIG. 5 is a schematic top view of the cleaning apparatus of the present invention.
Fig. 6 is a side view schematically showing a height-adjusting plate according to the present invention.
FIG. 7 is a weld joint penetrant inspection report for a weld of the present welding process.
FIG. 8 is a metallographic examination of a welded joint welded using the welding process of the present invention.
Fig. 9 is a test report of a weld joint welded using the welding process of the present invention.
Wherein: 1-main shaft, 2-small flange, 3-large flange, 10-automatic compactor, 101-pressure head structure, 102-height adjusting plate, 103-U-shaped plate, 11-vertical pile, 12-lower compactor, 121-compaction rod, 122-compaction cylinder, 123-arc plate, 13-limiting disc, 14-cleaning unit I, 15-cleaning unit II, 16-sleeving ring, 17-connecting rod, 18-compressed air pipeline, 19-transmission cylinder, 20-arc pipeline and 21-high temperature resistant steel brush.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.
Example (b): referring to fig. 1-3, a flange welding process with a spindle 1 rotated 90 degrees includes the steps of:
s1: pre-splicing
Sleeving a large flange 3 and a small flange 2 on a main shaft 1 according to the requirements of a drawing, and fixing the large flange and the small flange by spot welding on the non-groove side;
s2: preheating
Preheating the spot-welded main shaft 1 by using an oven at the temperature of 230 ℃, and keeping the temperature for 1 hour until the temperature of the workpiece is 150-200 ℃;
s3: spindle mounted for 190 degree rotation
Referring to fig. 4 and 6, the preheated main shaft 1 and the handrail shaft are hoisted to a welding workstation, and the main shaft 1 is vertically fixed by a 90-degree fixing device;
the 90-degree fixing device comprises a vertical pile 11, an automatic compactor 10 fixed on the vertical pile 11 and a lower clamper arranged on a welding workstation, the lower clamper and the automatic compactor 10 are arranged up and down correspondingly, and the automatic compactor 10 can freely move up and down on the vertical pile 11 under the control of a control module;
the bottom of the main shaft 1 is placed in the lower clamping device through a mechanical arm, and the top of the main shaft is automatically pressed through the automatic pressing device 10, so that the main shaft 1 is rotatably mounted by 90 degrees;
a servo driver and a servo motor are arranged in the automatic compactor 10, the servo motor is driven by the servo driver to move to the top end of the spindle 1, and the top end of the spindle 1 is compacted and fixed through a pressure head on the automatic compactor 10;
the pressure head structure 101 is a conical structure with an opening at the lower end, the conical structure is fixed at the bottom end of the automatic compactor 10 body through the height adjusting plate 102, when the pressure head compacts, the top end of the spindle 1 is clamped in the conical structure, the position is fixed only, and meanwhile, the height of the pressure head can be adjusted through the adjusting action of the height adjusting plate 102, so that the use range of the pressure head is expanded, and the welding requirements of spindles 1 with different sizes are met;
the height adjusting plate 102 is a steel plate, an adjusting groove is formed in the steel plate, the bottom of the adjusting groove penetrates through the bottom edge of the steel plate, the top of the adjusting groove is not penetrated, the U-shaped plate 103 is welded at the top end of the pressure head, the U-shaped plate 103 is clamped into the adjusting groove and can move up and down, the height of the U-shaped plate 103 is limited through a limiting bolt, and the purpose of adjusting the height of the pressure head is achieved;
the lower compactor 12 comprises a compacting disc and a circle of compacting rods 121, each compacting rod 121 is controlled by a compacting cylinder 122, the circle of compacting rods 121 is arranged around the main shaft 1 in a circle, the inclination angle of each compacting rod 121 is 30-45 degrees, and a compactor is fixed at the top end of each compacting rod 121;
the bottom of each pressing cylinder 122 is welded with a sliding block, a guide rail corresponding to each sliding block is arranged on each pressing disc, and the sliding blocks move in the guide rails to achieve the purposes of clamping, feeding and discharging;
the pressing device is an arc-shaped plate 123 with the same radian as the main shaft 1, and a clamping cavity matched with the outer diameter of the main shaft 1 is formed after the arc-shaped plates 123 are combined, so that the pressing device can be tightly attached to the outer wall of the main shaft 1 during clamping;
a layer of friction pad made of high-temperature-resistant resin material is fixedly bonded on the inner wall of the arc-shaped plate 123, so that the fixing effect of the main shaft 1 in the lower pressing device 12 is improved;
the working process is as follows: before clamping, the spindle 1 is firstly placed in the lower pressing device 12 through a manipulator, the pressing cylinder 122 is started to drive the pressing rod 121 to move towards the direction close to the spindle 1, when a circle of pressing rod 121 presses the spindle 1 in a pressing mode, the cylinder is still, the manipulator is far away, the automatic pressing device 10 is started, a pressing head is moved to the position of the upper end of the spindle 1, the position of the height adjusting plate 102 is selectively adjusted according to actual conditions, the upper end of the spindle 1 is just clamped in the conical structure, the position is unique in the whole welding process in the later period, and good perpendicularity is achieved;
s4: welding of
First welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is a fit clearance between the shaft and the flange;
and (3) second welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the outer side weld toe position of the first welding seam, and the error is within 1.5 mm;
and (3) third welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the inner side weld toe position of the second welding seam, and the error is within 1.5 mm;
and fourth welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the alignment position of the welding wire is the inner side weld toe position of the third welding seam, and the error is 1.5 mm;
and fifth welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the outer side weld toe position of the fourth welding seam, and the error is within 1.5 mm;
and sixth welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the inner side weld toe position of the fifth welding seam, and the error is within 1.5 mm;
furthermore, the sizes of welding materials selected for welding the first welding to the sixth welding are all phi 1.2 mm;
further, the current intensity of the first welding is 300A, the current intensity of the second welding is 280A, and the current intensity of the third welding to the sixth welding is 270A;
further, the voltage intensity of the first welding to the fifth welding is 27V, and the voltage intensity of the sixth welding is 26V;
further, the welding speed of the first welding, the second welding, the fifth welding and the fifth welding is 50, and the welding speed of the third welding and the sixth welding is 60;
further, the interlayer temperature needs to be controlled to be 100-180 ℃ in the welding process;
in the welding process, the welding gun needs to be cleared and robbed after 2-3 welding passes, the welding height of the third welding pass and the sixth welding pass needs to be larger than 8mm, and the other welding height needs to be 15 mm;
dry elongation of the welding wire in the welding process: 15mm plus or minus 2 mm; the welding current type is direct current reverse polarity;
the welding process also comprises welding protective gas which is 80% of Ar and 20% of CO2The gas flow is 10-15L/min, the arc-extinguishing current is 170A, and the arc-extinguishing voltage is 17V;
referring to fig. 4 and 5, in particular, the method further comprises a welding bead cleaning step, wherein welding slag and coating at the welding seam are removed through cleaning equipment after each welding is finished.
Specifically, the cleaning equipment is arranged on a vertical pile 11 and comprises a first cleaning unit and a second cleaning unit 15, the first cleaning unit and the second cleaning unit 15 are both rotatably arranged on the vertical pile 11, the power source of the first cleaning unit and the second cleaning unit 15 is a transmission cylinder 19, the first cleaning unit and the second cleaning unit 15 both comprise an air-blast cleaner and a friction cleaner, the first cleaning unit and the second cleaning unit 15 move oppositely from two sides of a welding seam to clean, and welding slag and coatings are thoroughly removed by combining friction cleaning while air-blast cleaning;
the cleaning unit I and the cleaning unit II 15 specifically comprise a sleeving circular ring 16, a connecting rod 17 of a central control structure, a transmission cylinder 19 and a cleaning part, the sleeving circular ring 16 is sleeved on the vertical pile 11, the connecting rod 17 is fixedly connected between the sleeving circular ring 16 and the cleaning part, the transmission end of the transmission cylinder 19 is connected with the side surface of the connecting rod 17, and the tail part of the transmission cylinder is connected with the cleaning unit I and the cleaning unit II 15 corresponding to the connecting rod through connecting arms;
the first cleaning unit is arranged at the upper part of the second cleaning unit 15, the limiting disc 13 is arranged on the vertical pile 11, the size of the limiting disc 13 is larger than that of the sleeving ring 16, the first cleaning unit is arranged on the limiting disc 13 in a sliding mode, specifically, a circular sliding rail is arranged on the limiting disc 13, the sleeving ring 16 of the first cleaning unit is connected in the sliding rail in a sliding mode, the second cleaning unit 15 is arranged on the first cleaning unit, and the size of the sleeved ring 16 on the second cleaning unit 15 is smaller than that of the first cleaning unit, the end part of the connecting rod 17 of the second cleaning unit 15 is also connected with a lower extension part, and because the second cleaning unit 15 is arranged above the first cleaning unit, however, the cleaners at the end parts of the first cleaning unit and the second cleaning unit 15 are all in the same horizontal plane, so that the lower extending part is required to extend the cleaning part on the second cleaning unit 15 downwards to be in the same straight line with the cleaning part on the first cleaning unit;
each connecting rod 17 with a hollow structure is connected with a compressed air pipeline 18, the compressed air pipeline 18 is connected with an air compressor, air is supplied to the cleaning part through the compressed air pipeline 18, and compressed air is sprayed outwards from the cleaning part under the action of high-pressure air flow to carry out air impact treatment on welding slag at the welding part;
each cleaner comprises a hollow arc-shaped pipeline 20 and a high-temperature-resistant steel brush 21 fixed on the inner side of the arc-shaped pipeline 20, the steel brush is fine, residual welding slag and residual coating which are difficult to be subjected to thorough air blasting treatment are subjected to friction treatment through the high-temperature-resistant steel brush 21, the welding slag and the residual coating are finally and effectively treated by combining the air blasting treatment, and meanwhile, the surface of a welding bead brushed by the steel brush has certain roughness, so that the subsequent welding is more favorably carried out;
the connecting rod 17 and the arc-shaped pipeline 20 are both made of high-temperature resistant steel;
the operation process is as follows: the position of the limiting disc 13 is approximately correspondingly arranged with the position of a flange on the 90-degree main shaft 1, when one welding pass is welded, one of the transmission cylinders 19 is started to drive the first cleaning unit to move, the first cleaning unit is close to a welding part, the welding pass can be cleaned by adopting the reciprocating motion which is staggered and spaced with the second cleaning unit 15, and the double cleaning of air impact and friction is received in the cleaning process, so that the aim of thoroughly cleaning residues is fulfilled, and the auxiliary improvement of the welding quality of the welding pass is facilitated;
s5: tempering destressing
Tempering at the temperature of 625 +/-25 ℃, preserving heat for 2-3 hours, and then cooling along with the furnace to eliminate internal residual stress;
s6: nondestructive testing, the welding joint form of flange welding is the angle joint of a plate and a rod, and is the same form, so the welding joint form of the flange welding is represented by the angle joint of the rod and the plate in the attached drawings.
FIG. 7 is a weld joint penetrant inspection report of a weld joint welded using the welding process of the present invention.
Fig. 8 shows the results of metallographic examination of the welded joint welded by the welding process of the present invention.
Fig. 9 is a test report of a weld joint welded using the welding process of the present invention.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The flange welding process with the main shaft rotating by 90 degrees is characterized by comprising the following steps of:
s1: pre-splicing
Sleeving a large flange and a small flange on a main shaft according to the requirements of a drawing, and fixing the large flange and the small flange on the non-groove side in a spot welding manner;
s2: preheating
Preheating the spot-welded main shaft by using an oven at the temperature of 230 ℃, and keeping the temperature for 1 hour until the temperature of the workpiece is 150-200 ℃;
s3: spindle 90-degree rotary mounting
Hoisting the preheated main shaft to a welding workstation, and vertically fixing the main shaft by a 90-degree fixing device;
the 90-degree fixing device comprises a vertical pile, an automatic compactor fixed on the vertical pile and a lower clamper arranged on the welding workstation, the lower clamper and the automatic compactor are arranged up and down correspondingly, and the automatic compactor can freely move up and down on the vertical pile under the control of a control module;
the bottom of the main shaft is placed in the lower clamping device through a mechanical arm, and the top of the main shaft is automatically pressed through the automatic pressing device, so that the main shaft is rotatably installed by 90 degrees;
s4: welding of
First welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is a fit clearance between the shaft and the flange;
and (3) second welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the outer side weld toe position of the first welding seam, and the error is within 1.5 mm;
and (3) third welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the inner side weld toe position of the second welding seam, and the error is within 1.5 mm;
and fourth welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the alignment position of the welding wire is the inner side weld toe position of the third welding seam, and the error is 1.5 mm;
and fifth welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the outer side weld toe position of the fourth welding seam, and the error is within 1.5 mm;
and sixth welding: the extending length of the welding wire is 13-17 mm; the angle of the welding gun is 45 degrees plus or minus 5 degrees; the welding wire alignment position is the inner side weld toe position of the fifth welding seam, and the error is within 1.5 mm;
the current intensity of the first welding is 300A, the current intensity of the second welding is 280A, and the current intensity of the third welding to the sixth welding is 270A;
the voltage intensity of the first welding to the fifth welding is 27V, and the voltage intensity of the sixth welding is 26V;
the welding speeds of the first welding, the second welding, the fourth welding and the fifth welding are all 50mm/s, and the welding speeds of the third welding and the sixth welding are all 60 mm/s;
the method also comprises a welding bead cleaning step, wherein the welding bead cleaning step is to clean welding slag and coating at a welding seam after each welding operation is finished through cleaning equipment;
the cleaning equipment is arranged on a vertical pile and comprises a first cleaning unit and a second cleaning unit, the first cleaning unit and the second cleaning unit are both rotatably arranged on the vertical pile, the power source of the first cleaning unit and the second cleaning unit is an air cylinder, the first cleaning unit and the second cleaning unit both comprise an air-blast cleaner and a friction cleaner, the first cleaning unit and the second cleaning unit move oppositely from two sides of a welding seam to clean, and welding slag and coatings are thoroughly cleaned by combining friction cleaning while air-blast cleaning;
a servo driver and a servo motor are arranged in the automatic compactor, the servo motor is driven by the servo driver to move to the top end of the spindle, and the top end of the spindle is compacted and fixed through a pressure head on the automatic compactor; the pressure head structure is a conical structure with an opening at the lower end, and the conical structure is fixed at the bottom end of the automatic compactor body through a height adjusting plate;
the second cleaning unit is arranged at the upper part of the first cleaning unit, a lower extension part is arranged on the second cleaning unit, and the second cleaning unit extends downwards to be on the same straight line with the first cleaning unit;
the first cleaning unit and the second cleaning unit comprise sleeved circular rings, connecting rods with hollow structures, transmission cylinders and cleaning parts; the sleeve ring is sleeved on the vertical pile, the connecting rod is fixedly connected between the sleeve ring and the cleaning part, the transmission end of the transmission cylinder is connected with the side surface of the connecting rod, and the tail part of the transmission cylinder is connected with the cleaning unit I and the cleaning unit II which correspond to the transmission end through the connecting arm;
each friction cleaner comprises a hollow arc-shaped pipeline and a high-temperature-resistant steel brush fixed on the inner side of the arc-shaped pipeline;
s5: tempering destressing
Tempering at the temperature of 625 +/-25 ℃, preserving heat for 2-3 hours, and then cooling along with the furnace to eliminate internal residual stress;
s6: and (4) carrying out nondestructive testing.
2. A flange welding process with spindle rotated 90 degrees according to claim 1, characterized in that: the sizes of welding materials selected for welding the first welding to the sixth welding are all phi 1.2 mm.
3. A flange welding process with spindle rotated 90 degrees according to claim 1, characterized in that: the interlayer temperature needs to be controlled to be 100-180 ℃ in the welding process.
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| CN201910543285.6A CN110449695B (en) | 2019-06-21 | 2019-06-21 | Flange welding process with main shaft rotating by 90 degrees |
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| CN201910543285.6A CN110449695B (en) | 2019-06-21 | 2019-06-21 | Flange welding process with main shaft rotating by 90 degrees |
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| JP3075723B1 (en) * | 1999-09-14 | 2000-08-14 | 株式会社大石工業 | Equipment for welding metal flanges to metal pipe ends |
| CN106312258A (en) * | 2015-06-23 | 2017-01-11 | 李浩杰 | Automatic welding machine special for waterproof casing pipe and pipeline accessories |
| CN205684883U (en) * | 2016-06-23 | 2016-11-16 | 金创(天津）人防设备有限公司 | A kind of closed guard gate's processing automatic welding machine |
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