CN102049594A - Automatic build-up welding equipment for abrasion-resistant layer on inner wall of pipeline and automatic build-up welding method - Google Patents
Automatic build-up welding equipment for abrasion-resistant layer on inner wall of pipeline and automatic build-up welding method Download PDFInfo
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- CN102049594A CN102049594A CN 201010557900 CN201010557900A CN102049594A CN 102049594 A CN102049594 A CN 102049594A CN 201010557900 CN201010557900 CN 201010557900 CN 201010557900 A CN201010557900 A CN 201010557900A CN 102049594 A CN102049594 A CN 102049594A
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Abstract
The invention discloses automatic build-up welding equipment for an abrasion-resistant layer on an inner wall of a pipeline and an automatic build-up welding method for realizing efficient automatic production of high abrasion-resistant composite conveying pipelines. The equipment comprises a host, a direct-current gas protective welding power supply, a protective gas storage tank and a control box with a built-in automatic control device; one end of a base is provided with a head, a main shaft, a chuck and an adjustable roller bracket; the other end of the base is provided with a welding gun running execution device, and the device comprises a driving and reversing platform, a swing platform, a welding gun lifting mechanism, a wire feeder and a welding gun; the front end of the welding gun is provided with a welding torch, and a welding wire and a protective gas conveying pipe are communicated to the front end of the welding gun; the anode of the welding power supply is connected with the welding torch, and the cathode of the welding power supply is connected with a workpiece; and the moving parts are driven by a step motor through the automatic control device. The operation process comprises early preparation, parameter setting, welding and reset stopping; and by setting control parameters, the execution parts run according to the set parameters to form build-up welding layers tightly arranged and uniformly distributed in a spiral motion locus.
Description
Technical field
The invention belongs to welding technology field, be specifically related to a kind of inner-walls of duct wearing layer automatic bead welding equipment and automatic surfacing method thereof.
Background technology
In industries such as electric power, metallurgy, mine, building materials, when materials such as employing pipeline ash-slag delivery, coal dust, tantalite power, concrete grout, conveying pipeline inner wall not only bears serious wearing and tearing, sometimes also to bear bigger pressure, under this working condition, common steel tube very easily weares and teares and breaks, and service life is short.In order to adapt to above-mentioned condition of work, a kind of effective way is at common straightcarbon steel inside pipe wall build-up wear-resistant layer at present, thereby produce the compound conveyance conduit of a kind of high abrasion, this conveyance conduit scope of application is wide, and demand is big, if employing manual welding, not only production efficiency is low, work under hard conditions, and surfacing quality can't guarantee, when pipe diameter relatively hour, the welder can't enter at all and carry out the built-up welding operation in the pipeline.
Summary of the invention
The purpose of this invention is to provide a kind of inner-walls of duct wearing layer automatic bead welding equipment and automatic surfacing method thereof, thereby realize the high-efficient automatic production of the compound conveyance conduit of high abrasion.
Inner-walls of duct wearing layer automatic bead welding equipment of the present invention is achieved through the following technical solutions:
Inner-walls of duct wearing layer automatic bead welding equipment comprises the storage tank of main frame, direct current gas shielded welding power-supply, splendid attire protective gas and the control cabinet of built-in automaton;
Main frame comprises support, end at support is provided with head, bearing for spindle is bearing on the head, stepper motor is arranged through deceleration rear drive main shaft in the outside of head, the other end that is positioned at the head inboard at main shaft is equipped with chuck, also is provided with on support and the corresponding adjustable rolling wheel support of chuck position;
The other end at support is provided with the welding gun operation actuating unit corresponding with chuck, the bottom of described welding gun operation actuating unit is the advance and retreat platforms, advance and retreat platform by its bottom linear bearing and linear guide bearings on support, line slideway is identical with the chuck axis direction, be arranged on the stepper motor drive decelerator on the advance and retreat platform and drive the advance and retreat platform and advance and retreat along line slideway by the rack-and-pinion transmission, on the advance and retreat platform, be provided with oscillating platform, oscillating platform by its bottom linear bearing and linear guide bearings advance and retreat platform on, line slideway is identical with the chuck axis direction, be arranged on the stepper motor drive decelerator on the advance and retreat platform and drive oscillating platform and swing along line slideway by the rack-and-pinion transmission, in the front portion of oscillating platform welding gun elevating mechanism and welding gun are housed, the front end of welding gun is equipped with welding torch, at the rear portion of oscillating platform the wire-feed motor of being controlled by the direct current gas shielded welding power-supply is housed, welding wire and protective gas carrier pipe lead to the welding gun front end;
The positive pole of direct current gas shielded welding power-supply connects welding torch, and negative pole connects welded piece;
The lead that connects each stepper motor leads to control cabinet.
The described main shaft that is bearing on the head is a hollow shaft, is provided with air-introduced machine at the other end relative with chuck.
Described main shaft is to be slowed down and driving through decelerator and then through sprocket wheel chain transmission by stepper motor.
Described welding gun elevating mechanism comprises location riser and the perpendicular platform of lifting, the perpendicular platform of lifting is being located on the riser by the linear bearing and the linear guide bearings of its medial surface, welding gun is installed on the perpendicular platform of lifting, and the lifting of the perpendicular platform relative positioning riser of lifting is driven by the lead screw pair that has handwheel.
Described welding gun elevating mechanism comprises location riser and the perpendicular platform of lifting, the perpendicular platform of lifting is being located on the riser by the linear bearing and the linear guide bearings of its medial surface, welding gun is installed on the perpendicular platform of lifting, and the lifting of the perpendicular platform relative positioning riser of lifting drives decelerator by stepper motor and drives by the rack-and-pinion transmission.
The main part of described welding gun is a hollow pipe, and the positive wire of direct current gas shielded welding power-supply, protective gas carrier pipe and welding wire pass through from pipe.
Described automaton comprises programmable logic controller (PLC), controllor for step-by-step motor, stepper motor driver and input-output equipment, through being electrically connected formation.
Described direct current gas shielded welding power-supply is the high-power IGBT inverter.
Described protective gas is argon gas or carbon dioxide gas.
Utilize the automatic surfacing method of inner-walls of duct wearing layer automatic bead welding equipment of the present invention, its operating procedure process is as follows:
(1) early-stage preparations
Tubing to be welded is put on the adjustable rolling wheel support, blocks the center that an end of tubing is adjusted tubing with chuck; Welding wire through in the welding gun, is adjusted the vertical height and the horizontal level of welding gun, and the vertical range that makes welding torch and pipe material inner wall solder side is 10～15mm, with the edge to be welded horizontal range of tubing be 5～10mm, the while welding torch is in the downhand position;
(2) setup parameter
By operation to the control cabinet of built-in automaton, set the rotating speed of main shaft, control the linear velocity (control range is per minute 0-1200mm) of tubing operation to be welded; Set the advance and retreat platform axle to point-to-point speed, control welding gun per minute displacement (control range 0-800mm); Set the speed of oscillating platform swing, control torch swinging amplitude (control range 0-280mm, the distance that moves with the welding gun per minute equates), control per minute number of oscillations (control range 0～200 time); Set the direction of rotation and the straight-line direction of advance and retreat platform of main shaft; Set the welding current of direct current gas shielded welding power-supply and the flow of the welding wire speed of service and protective gas simultaneously;
(3) welding process
Start inner-walls of duct wearing layer automatic bead welding equipment of the present invention and begin weld job, each is carried out partly according to the parameter operation of setting, soldered tubing is in the process that whenever rotates a circle, welding torch axially at the uniform velocity moves a weld width, the amplitude of welding torch reciprocally swinging is a weld width simultaneously, thereby forms the overlay cladding of closely arranging equally distributed spiralling track; Above-mentioned weld job process is carried out continuously, moves to the operation terminal point of soldered tubing until welding torch;
(4) stop to reset
The tubing welding finishes and can stop weld job, and welding gun is withdrawed to non-job position.
The compound conveyance conduit of high abrasion that welding is good unloads from chuck.
Advantage of the present invention and beneficial effect are as follows:
Host machine part of the present invention comprises support and is arranged on the head of support one end, main shaft is installed on the head, the inside end of main shaft is equipped with chuck, the other end at support is provided with and the corresponding welding gun operation of chuck actuating unit, described welding gun operation actuating unit comprises advance and retreat platform, oscillating platform and welding gun elevating mechanism and welding gun, and its overall construction design is reasonable.
Chuck on the head adopts stepper motor to drive decelerator by main shaft and sprocket wheel chain transmission drives, and makes the chuck rotary speed steadily reliable; Adopt linear bearing and line slideway to position and support in the welding gun operation actuating unit, welding gun is operated steadily accurately; Advance and retreat, swing and lifting in the welding gun operation actuating unit all can adopt stepper motor to drive the type of drive of reductor by the rack-and-pinion transmission, and technology maturation is reliable; When the elevating movement in the welding gun operation actuating unit adopts the lead screw pair that has handwheel to drive, the welding gun elevating mechanism is further simplified, its operation is more intuitive and reliable.
The main shaft that is bearing on the head is a hollow shaft, is provided with air-introduced machine at its other end relative with chuck, can siphon away the flue dust that produces in the welding process.
The front end of welding gun is equipped with welding torch; the main part of welding gun is a hollow pipe; the wire-feed motor at its rear portion can penetrate welding wire hollow pipe very easily and lead to the welding gun front end, and the positive wire of direct current gas shielded welding power-supply and protective gas carrier pipe penetrate hollow pipe equally and lead to the welding gun front end.
The adjustable rolling wheel support that is provided with on support is corresponding with chuck position, and two of adjustable rolling wheel supports are one group and are oppositely arranged, and adopt the tubing of two groups of adjustable rolling wheel supports applicable to supporting different length and different-diameter.
Automaton places in the control cabinet, comprise programmable logic controller (PLC), controllor for step-by-step motor, stepper motor driver and input-output equipment, through being electrically connected formation, can realize control to each moving component, satisfy the operations requirement in the weld job process.
The present invention adopts the high-power IGBT inversion direct current source of welding current, and protective gas is argon gas or carbon dioxide gas, can satisfy the built-up welding requirement to the inner-walls of duct composite.
Utilize the automatic surfacing method of inner-walls of duct wearing layer automatic bead welding equipment of the present invention,, can draw as drawing a conclusion by understanding to its operating procedure process:
In the early-stage preparations operation, clamp and the adjustment location of welding gun of tubing to be welded can be realized smoothly by the operation of present device.
In the setup parameter operation, by operation, can set every job parameter to the control cabinet and the direct current gas shielded welding power-supply of built-in automaton, by the setting of job parameter, can satisfy every requirement to the built-up welding operation.
In welding process, the various piece of present device can guarantee to form the overlay cladding of the equally distributed spiralling track of tight arrangement according to parameter of setting and instruction operation.
After weld job was finished, the welding gun advance and retreat were convenient, and the compound conveyance conduit of made high abrasion can unload smoothly.
The present invention can also be achieved as follows function:
In operating procedure process of the present invention, be zero when setting the speed of mainshaft, when the speed of only setting the advance and retreat platform in the welding gun operation actuating unit was a certain numerical value, inner-walls of duct wearing layer automatic bead welding equipment of the present invention is formed to be straight bead.
In operating procedure process of the present invention, be a certain numerical value when setting the speed of mainshaft, when the speed of setting advance and retreat platform in the welding gun operation actuating unit was zero, inner-walls of duct wearing layer automatic bead welding equipment of the present invention is formed to be the inner-walls of duct circular weld; The width of circular weld is determined by the parameter of setting oscillating platform in the welding gun operation actuating unit.
In operating procedure process of the present invention, by setting suitable parameter, make welding gun when being revolved distance that the time advance and retreat of turning around move greater than the amplitude of swing by the welded tube material, inner-walls of duct wearing layer automatic bead welding equipment of the present invention is formed to be the inner-walls of duct spiral weld.
In a word, adopt equipment of the present invention and method, can realize the high-efficient automatic production of the compound conveyance conduit of high abrasion, reduce working strength of workers, improve working conditions, guarantee product quality, enhance productivity, provide advantageous conditions for producing the compound conveyance conduit of high abrasion in batches.
Description of drawings
Accompanying drawing is the main machine structure schematic diagram of inner-walls of duct wearing layer automatic bead welding equipment of the present invention.
The present invention goes back the direct current gas shielded welding power-supply that does not comprise in the drawings attached, the storage tank of splendid attire protective gas and the control cabinet of built-in automaton.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
Inner-walls of duct wearing layer automatic bead welding equipment comprises the storage tank of main frame, direct current gas shielded welding power-supply, splendid attire protective gas and the control cabinet of built-in automaton.
Main frame comprises support 1, support 1 is the bar shaped platform, it is the installation basis of whole main frame, end at support 1 is provided with head 2, two bearing spiders 3 of main shaft 10 usefulness and 4 are bearing on the head 2, on the support 1 in head 2 outsides, support 6 is housed, stepper motor 7 is installed on the support 6, stepper motor 7 direct connection decelerators, drive sprocket 5 is housed on the output shaft of decelerator, correspondence is equipped with by movable sprocket 9 on the main shaft 10, and by chain drive main shaft 10, the other end that is positioned at head 2 inboards at main shaft 10 is equipped with the chuck 11 that is used for clamping workpiece.Described main shaft 10 is hollow shafts, is provided with air-introduced machine 8 at head 2 outsides and the chuck 11 relative other ends.Chuck 11 extend internally along axis below, also be provided with on the support 1 and the corresponding two groups of adjustable rolling wheel supports 12 in chuck 11 positions and 13, it is one group that per two adjustable rolling wheel supports are symmetrical arranged.
At the other end of support 1, be provided with the welding gun operation actuating unit corresponding with chuck 11.The bottom of described welding gun operation actuating unit is advance and retreat platforms 16, advance and retreat platform 16 is bearing on the support 1 by its bottom two groups of linear bearings 26 installed and the two groups of line slideways 27 that are arranged in parallel that are installed on the support 1, line slideway 27 is identical with chuck 11 axis directions, be installed in the stepper motor 22 direct connection decelerators at advance and retreat platform 16 rear portions, reducer output shaft is equipped with gear downwards, tooth bar is fixed between two groups of line slideways 27, can drive advance and retreat platform 16 by the rack-and-pinion transmission and advance or retreat, drive whole welding gun operation actuating unit and advance or retreat at support 1 upper edge chuck 11 axis directions along line slideway 27.
Above the advance and retreat platform 16 is oscillating platform 20, oscillating platform 20 is bearing on the advance and retreat platform 16 by its bottom two groups of linear bearings 24 installed and the two groups of line slideways 25 that are arranged in parallel that are installed on the advance and retreat platform 16, the two group line slideway 25 of advance and retreat on the platform 16 and two groups of line slideways 27 on the support 1 are on two parallel planes and are identical with chuck 11 axis directions, be arranged on the stepper motor 23 direct connection decelerators of advance and retreat platform 16 front portions, reducer output shaft upwards is equipped with gear, tooth bar is fixed between two groups of line slideways 25, and can drive oscillating platform 20 along line slideway 25 swings by the rack-and-pinion transmission.
Welding gun elevating mechanism 19 and welding gun 15 are housed in the front portion of oscillating platform 20, and the main part of welding gun 15 is hollow pipes, the length of hollow pipe and the length of tubing to be welded (or length half) quite, the front end of welding gun 15 is equipped with welding torch 14.The wire-feed motor of being controlled by the direct current gas shielded welding power-supply 21 is housed at the rear portion of oscillating platform 20; welding wire and protective gas carrier pipe penetrate hollow pipe and lead to welding gun 15 front ends; the positive wire of direct current gas shielded welding power-supply penetrates hollow pipe and connects welding torch 14, and negative pole connects workpiece.Welding gun elevating mechanism 19 comprises a location riser 17 and the perpendicular platform of the lifting that is oppositely arranged at its back side, the perpendicular platform of lifting is being located on the riser 17 by two groups of linear bearings that are installed in its medial surface and the two groups of linear guide bearings that are arranged in parallel that are installed on the riser 17 of location, the lifting of the perpendicular platform relative positioning riser 17 of lifting drives by the lead screw transmission that has handwheel 18 is secondary, welding gun 15 is fixed on the lateral surface that platform is erected in lifting with chuck 11 axis direction identical end portions, rotate handwheel 18, welding gun 15 can move up and down, adjustable height.Another drive scheme as welding gun elevating mechanism 19, it is full-automatic drive scheme, the lifting of the perpendicular platform relative positioning riser 17 of lifting drives decelerator by stepper motor and drives by the rack-and-pinion transmission, can realize the elevating movement of the perpendicular platform relative positioning riser 17 of lifting equally.
The lead that connects each stepper motor leads to control cabinet respectively, and control cabinet is built-in with automaton.Automaton includes programmable logic controller (PLC), controllor for step-by-step motor, stepper motor driver and input-output equipment, through being electrically connected formation.By operation to control cabinet, thus the automatic control of realization inner-walls of duct wearing layer automatic bead welding equipment.
The direct current gas shielded welding power-supply that adopts is the high-power IGBT inverter, and protective gas is argon gas or carbon dioxide gas.
A concrete welding operation example is described below:
The carbon steel tubing of preparing diameter 300mm, the length 3000mm of welding is put on the adjustable rolling wheel support, blocks an end of steel pipe and the center of adjusting whole steel pipe with chuck.Open source of welding current switch, welding wire through in the welding gun, is adjusted the elongation of welding gun and the height of welding gun, and making welding torch is 10～15mm apart from the vertical range for the treatment of overlaying surface of steel pipe inwall, with the edge to be welded horizontal range of steel pipe be 5～10mm, simultaneously welding torch is in the downhand position.
Open the control cabinet power switch, the rotating speed of adjusting main shaft is 17%, linear velocity per minute 134mm.Adjusting the advance and retreat platform axle is 1% to point-to-point speed, and the welding gun per minute moves 35mm.Speed 100% pulse of adjusting the oscillating platform swing is 13000, and the torch swinging amplitude is 35mm, per minute swing 60 times.Determine the main axis rotation direction for counterclockwise and the direction of motion of welding gun for moving forward into.Set the flow of welding current, the welding wire speed of service and the protective gas of direct current gas shielded welding power-supply, forward linkage status simultaneously to.
Press start button, the source of welding current starts and begins welding, each moving component is simultaneously by the movement parameter of setting, workpiece whenever rotates a circle, welding torch moves 35mm along the axis direction of steel pipe to be welded to the inside of steel pipe, and the width of welding bead also is 35mm, and welding gun carries out continuous welding in the downhand position, the welding bead of steel pipe inwall is the equally distributed helical form of tight arrangement, finishes 1.5 meters length up to built-up welding.
Press stop button and stop welding, be reset to the preceding position of welding by the SR welding gun.
The workpiece tune of having welded 1.5 meters long is contained on the inner-walls of duct wearing layer automatic bead welding equipment of the present invention again, repeats aforesaid operations and finish other 1.5 meters up to welding, so far, 3 meters long pipe fitting welding is finished.
Press stop button and stop welding, be reset to the preceding position of welding by the SR welding gun.
The compound conveyance conduit of high abrasion that welding is good unloads from chuck.
The present invention is at steel pipe inner wall overlaying high-abrasive material, makes its needs that reach wear resistant and impact resistant, and the title of welding wire that embodiment adopts is yd547, is a kind of high tungsten chromium nickel silicon alloy flux-cored wire, and the wearing layer after the built-up welding has very high wearability and shock resistance.The major metal composition of welding wire: Cr≤3.00% Ni≤5.00～7.00% Si≤1.00% W≤70～85%; The content that changes heterogeneity can obtain the wearing layer of different hardness, and the steel pipe after built-up welding is finished is the compound conveyance conduit of high abrasion.
The invention is not restricted to the foregoing description, for example stepper motor is replaced into other buncher, its automatic control section is adjusted accordingly, and for another example the sprocket wheel chain drive is replaced into gear drive or belt pulley transmission, can realize purpose of the present invention equally.Under the situation that tubing to be welded has been determined, these two links of early-stage preparations in the operating procedure process and setup parameter are not strict front and back ordinal relation.In a word, every, simple modification alternative without being equal to of creative work still belongs to protection domain of the present invention.
Claims (10)
1. an inner-walls of duct wearing layer automatic bead welding equipment is characterized in that: comprise the storage tank of main frame, direct current gas shielded welding power-supply, splendid attire protective gas and the control cabinet of built-in automaton;
Main frame comprises support, end at support is provided with head, bearing for spindle is bearing on the head, stepper motor is arranged through deceleration rear drive main shaft in the outside of head, the other end that is positioned at the head inboard at main shaft is equipped with chuck, also is provided with on support and the corresponding adjustable rolling wheel support of chuck position;
The other end at support is provided with the welding gun operation actuating unit corresponding with chuck, the bottom of described welding gun operation actuating unit is the advance and retreat platforms, advance and retreat platform by its bottom linear bearing and linear guide bearings on support, line slideway is identical with the chuck axis direction, be arranged on the stepper motor drive decelerator on the advance and retreat platform and drive the advance and retreat platform and advance and retreat along line slideway by the rack-and-pinion transmission, on the advance and retreat platform, be provided with oscillating platform, oscillating platform by its bottom linear bearing and linear guide bearings advance and retreat platform on, line slideway is identical with the chuck axis direction, be arranged on the stepper motor drive decelerator on the advance and retreat platform and drive oscillating platform and swing along line slideway by the rack-and-pinion transmission, in the front portion of oscillating platform welding gun elevating mechanism and welding gun are housed, the front end of welding gun is equipped with welding torch, at the rear portion of oscillating platform the wire-feed motor of being controlled by the direct current protecting gas source of welding current is housed, welding wire and protective gas carrier pipe lead to the welding gun front end;
The positive pole of direct current gas shielded welding power-supply connects welding torch, and negative pole connects welded piece;
The lead that connects each stepper motor leads to control cabinet.
2. inner-walls of duct wearing layer automatic bead welding equipment according to claim 1 is characterized in that: the described main shaft that is bearing on the head is a hollow shaft, is provided with air-introduced machine at the other end relative with chuck.
3. inner-walls of duct wearing layer automatic bead welding equipment according to claim 1 is characterized in that: described main shaft is to be slowed down and driving through decelerator and then through sprocket wheel chain transmission by stepper motor.
4. inner-walls of duct wearing layer automatic bead welding equipment according to claim 1, it is characterized in that: described welding gun elevating mechanism comprises location riser and the perpendicular platform of lifting, the perpendicular platform of lifting is being located on the riser by the linear bearing and the linear guide bearings of its medial surface, welding gun is installed on the perpendicular platform of lifting, and the lifting of the perpendicular platform relative positioning riser of lifting is driven by the lead screw pair that has handwheel.
5. inner-walls of duct wearing layer automatic bead welding equipment according to claim 1, it is characterized in that: described welding gun elevating mechanism comprises location riser and the perpendicular platform of lifting, the perpendicular platform of lifting is being located on the riser by the linear bearing and the linear guide bearings of its medial surface, welding gun is installed on the perpendicular platform of lifting, and the lifting of the perpendicular platform relative positioning riser of lifting drives decelerator by stepper motor and drives by the rack-and-pinion transmission.
6. inner-walls of duct wearing layer automatic bead welding equipment according to claim 1, it is characterized in that: the main part of described welding gun is a hollow pipe, the positive wire of direct current gas shielded welding power-supply, protective gas carrier pipe and welding wire pass through from pipe.
7. inner-walls of duct wearing layer automatic bead welding equipment according to claim 1, it is characterized in that: described automaton, comprise programmable logic controller (PLC), controllor for step-by-step motor, stepper motor driver and input-output equipment, through being electrically connected formation.
8. inner-walls of duct wearing layer automatic bead welding equipment according to claim 1 is characterized in that: described direct current gas shielded welding power-supply is the high-power IGBT inverter.
9. inner-walls of duct wearing layer automatic bead welding equipment according to claim 1 is characterized in that: described protective gas is argon gas or carbon dioxide gas.
10. utilize the automatic surfacing method of inner-walls of duct wearing layer automatic bead welding equipment of the present invention, it is characterized in that the operating procedure process is as follows:
(1) early-stage preparations
Tubing to be welded is put on the adjustable rolling wheel support, blocks the center that an end of tubing is adjusted tubing with chuck; Welding wire through in the welding gun, is adjusted the vertical height and the horizontal level of welding gun, and the vertical range that makes welding torch and pipe material inner wall solder side is 10～15mm, with the edge to be welded horizontal range of tubing be 5～10mm, the while welding torch is in the downhand position;
(2) setup parameter
By operation to the control cabinet of built-in automaton, set the rotating speed of main shaft, control the linear velocity (control range is per minute 0-1200mm) of tubing operation to be welded; Set the advance and retreat platform axle to point-to-point speed, control welding gun per minute displacement (control range 0-800mm); Set the speed of oscillating platform swing, control torch swinging amplitude (control range 0-280mm, the distance that moves with the welding gun per minute equates), control per minute number of oscillations (control range 0～200 time); Set the direction of rotation and the straight-line direction of advance and retreat platform of main shaft; Set the welding current of direct current gas shielded welding power-supply and the flow of the welding wire speed of service and protective gas simultaneously;
(3) welding process
Start inner-walls of duct wearing layer automatic bead welding equipment of the present invention and begin weld job, each is carried out partly according to the parameter operation of setting, soldered tubing is in the process that whenever rotates a circle, welding torch axially at the uniform velocity moves a weld width, the amplitude of welding torch reciprocally swinging is a weld width simultaneously, thereby forms the overlay cladding of closely arranging equally distributed spiralling track; Above-mentioned weld job process is carried out continuously, moves to the operation terminal point of soldered tubing until welding torch;
(4) stop to reset
The tubing welding finishes and can stop weld job, and welding gun is withdrawed to non-job position;
The compound conveyance conduit of high abrasion that welding is good unloads from chuck.
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| CN 201010557900 CN102049594A (en) | 2010-11-25 | 2010-11-25 | Automatic build-up welding equipment for abrasion-resistant layer on inner wall of pipeline and automatic build-up welding method |
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| CN 201010557900 CN102049594A (en) | 2010-11-25 | 2010-11-25 | Automatic build-up welding equipment for abrasion-resistant layer on inner wall of pipeline and automatic build-up welding method |
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Application publication date: 20110511 |