CN107644579A - A kind of manual arc welding simulated instrument for training of magnetic inductive - Google Patents

A kind of manual arc welding simulated instrument for training of magnetic inductive Download PDF

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Publication number
CN107644579A
CN107644579A CN201711032603.XA CN201711032603A CN107644579A CN 107644579 A CN107644579 A CN 107644579A CN 201711032603 A CN201711032603 A CN 201711032603A CN 107644579 A CN107644579 A CN 107644579A
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China
Prior art keywords
magnetic
welding
training
mounting box
magnetic stripe
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CN201711032603.XA
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Chinese (zh)
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CN107644579B (en
Inventor
刘鹰
梁刚
刘春群
韦泉
黄运涛
周柱龙
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Guangxi Agricultural Vocational College
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Guangxi Agricultural Vocational College
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Publication of CN107644579B publication Critical patent/CN107644579B/en
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Abstract

The invention discloses a kind of manual arc welding simulated instrument for training of magnetic inductive, it is connected including simulation welding workpiece group, simulated electrode group and simulation electric welding machine, the ultrasonic distance-measuring sensor installed in magnetic stripe mounting box one end by the power line installed in magnetic stripe mounting box bottom with power outlet;Pneumatic triplet, two-position three-way hand change valve, two-position five-way solenoid directional control valve and single pole double-acting cylinder are sequentially connected, and one-way throttle valve are also associated between two-position five-way solenoid directional control valve and single pole double acting, power switch is connected with conversion electric power.Power outlet is connected with conversion electric power, and magnetic inductor A, magnetic inductor B, magnetic inductor C, buzzer, LED lamp bead are connected by way of series connection with conversion electric power;The input of programmable controller is connected with ultrasonic distance-measuring sensor, and the output end of programmable controller is connected with LED lamp bead.Instrument for training design structure of the present invention is simple, and beginner can be helped quickly to grasp the arc manipulation of different welding positions and the training of feeding action.

Description

A kind of manual arc welding simulated instrument for training of magnetic inductive
Technical field
The present invention relates to a kind of manual arc welding simulated instrument for training of magnetic inductive.
Background technology
Manual electric arc welding is to make metal using the arc heat between welding rod and weldment and mother metal melts the one kind to form weld seam Welding method.According to the difference of the relative position of workpiece, four kinds of downhand welding, vertical position welding, horizontal position welding and overhead welding welding positions can be divided into.In A kind of manual electric arc welding supplemental training device, this device substantially only considered disclosed in state patent ZL201420792688.7 The training of downhand welding mode.Manual electric arc welding rod-moving operation analog training device disclosed in Chinese patent ZL200910023097.7 and Arc welding rod-moving detection method, this analog training device, beginner's downhand welding arc manipulation method is also mainly trained, without more Go to consider that the arc manipulation of the various welding positions including vertical position welding, horizontal position welding and overhead welding is trained.In addition, beginner also needs to slap The welding rod of different-diameter is held under different welding currents, produces corresponding feeding speed during different burning velocities.
In addition, operator takes the size for carving concern welding pool during arc manipulation.One measured weld seam of matter be by It is countless in the same size and continuously molten bath is concretionary.Therefore, skilled addressee thinks manual arc-welding operations The height of level of skill is exactly " arc manipulation ability " and " molten bath observation ability " after all in the tool of existing level and development level Body embodies.Beginner practical operation training in often due to operational motion it is uncoordinated, there is the phenomenon attended to one thing and lose sight of another, hold very much Easily ignore observation molten bath size to adjust the problem of welding action ensures welding quality.
The content of the invention
It is an object of the invention to provide a kind of manual arc welding simulated instrument for training of magnetic inductive, beginner can be quickly aided in Grasp the welding rod arc manipulation method of the different welding positions such as downhand welding, vertical position welding, horizontal position welding and overhead welding common in welding, grasp different welderings Molten bath size is to adjust welding action during corresponding feeding rhythm of action under bar burning velocity and study observation arc manipulation With movement velocity etc. to ensure welding quality.
To achieve the above object, the manual arc welding simulated instrument for training of magnetic inductive of the invention, including simulation welding workpiece Group, simulated electrode group and simulation electric welding machine, the simulation welding workpiece group include locating rack, magnetic stripe mounting box, magnetic stripe, ultrasonic wave Distance measuring sensor, power line and power outlet, three straight troughs are provided with locating rack, it is fixed that two straight troughs are arranged in right-angled intersection The side of position frame, a straight trough are arranged on the top of locating rack, and the size of straight trough is adapted with magnetic stripe mounting box, magnetic stripe mounting box It is detachably connected and is fixed on straight trough, magnetic stripe installation is connected in magnetic stripe mounting box;Ultrasonic wave installed in magnetic stripe mounting box one end Distance measuring sensor is connected by the power line installed in magnetic stripe mounting box bottom with power outlet;
The simulated electrode group includes:Single pole double-acting cylinder, lever and test inductive head, are provided with single pole double acting on lever Cylinder, test inductive head are arranged on the piston rod head of single pole double-acting cylinder, and test inductive head is provided with magnetic inductor A, magnetic Inductor B, magnetic inductor C, buzzer and LED lamp bead, magnetic inductor A, magnetic inductor B, magnetic inductor C are separately mounted to magnetic strength The different height inside head is answered, LED lamp bead is fixedly connected on test inductive head front end;
The simulation electric welding machine includes:Pneumatic triplet, two-position five-way solenoid directional control valve, one-way throttle in casing Valve, two-position three-way hand change valve, power switch, programmable controller and conversion electric power, pneumatic triplet, two-position three way hand Dynamic reversal valve, two-position five-way solenoid directional control valve and single pole double-acting cylinder are sequentially connected, two-position five-way solenoid directional control valve and single pole One-way throttle valve is also associated between double acting, power switch is connected with conversion electric power;
Power outlet is connected with conversion electric power, and magnetic inductor A, magnetic inductor B, magnetic inductor C, buzzer, LED lamp bead pass through string The mode of connection is connected with conversion electric power;The input of programmable controller is connected with ultrasonic distance-measuring sensor, programmable The output end of controller is connected with LED lamp bead.
Further, the simulation welding workpiece group also includes bolt, and the bottom of straight trough is provided with two through holes, magnetic stripe installation The bottom of box is provided with two nuts, and magnetic stripe mounting box is fixed by way of bolt coordinates through through hole with nut with straight trough to be connected Connect.
Further, the simulation welding workpiece group also includes stator, and magnetic stripe mounting box face down passes through stator It is connected with the straight trough on locating rack top.
Further, the stator is provided with four through holes, and each two through hole is one group, and stator is passed through by bolt One group of through hole is fixedly connected with straight trough, and magnetic stripe mounting box face down is fastened on fixation by bolt through another group of through hole On piece.
Further, the height spacing between the magnetic inductor B and magnetic inductor C is 2mm-4mm.
Further, the LED lamp bead is that astigmatism type highlights red lamp bead, and aperture size and the shading value of LED lamp bead can Become.
Further, the outside of the LED lamp bead is additionally provided with lampshade.
The substantive distinguishing features of the present invention and progress are:
The manual arc welding simulated instrument for training of magnetic inductive of the application, has advantages below:
1st, design structure is simple, and manufacturing cost is low, can help that beginner quickly grasps the arc manipulation of different welding positions and feeding is moved The training of work.
2nd, beginner can be helped to grasp the shading value by observing lamp bead(That is molten bath size)Ensured with adjusting welding action The simulated training of welding quality.
3rd, this instrument for training is divided into three parts, is designed entirely by reference to the part of actual welding equipment, can give just Scholar creates a more real simulated training environment, and move related to grasps can be faster adapted to during actually to operate the computer Make technical key point.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of simulated electrode group.
Fig. 3 is the structural representation for testing inductive head.
Fig. 4 is the downhand welding of simulation workpiece group, vertical position welding station structure schematic diagram.
Fig. 5 is the downhand welding of simulation workpiece group, vertical position welding station structure rearview.
Fig. 6 is the horizontal position welding of simulation workpiece group, overhead welding station structure schematic diagram.
Fig. 7 is simulation electric welding machine structure schematic diagram.
Fig. 8 is the circuit theory diagrams of programmable controller.
Component serial number and title in figure:
Simulated electrode group I, simulation electric welding machine II, simulation welding workpiece group III;
11- locating racks, 12- magnetic stripes mounting box, 13- magnetic stripes, 14- stators, 15- bolts, 16- ultrasonic distance-measuring sensors, 17- Power line, 18- power outlets;
The pneumatic triplet of 21- casings, 22-, 23- two-position five-ways solenoid directional control valve, 24- one-way throttle valves, 25- two-position three ways are manual Reversal valve, 26- power switches, 27- programmable controllers, 28- conversion electric powers;
31- single poles double-acting cylinder, 32- levers, 33- tests inductive head, 33-1 magnetic inductor A, 33-2 magnetic inductors B, 33-3 Magnetic inductor C, 34- buzzer, 35-LED lamp beads, 36- lampshades.
Embodiment
Below in conjunction with the implementation structure of the accompanying drawing description present invention.
Referring to shown in Fig. 1-Fig. 8, the manual arc welding simulated instrument for training of magnetic inductive of the invention, including simulation welding workpiece Group III, simulated electrode group I and simulation electric welding machine II.
Three straight troughs are provided with the locating rack 11 of simulation welding workpiece group III, it is fixed that two straight troughs are arranged in right-angled intersection The side of position frame 11, a straight trough are arranged on the top of locating rack 11, and the size of straight trough is adapted with magnetic stripe mounting box 12, magnetic stripe Mounting box 12, which is detachably connected, is fixed on straight trough, and the installation of magnetic stripe 13 is connected in magnetic stripe mounting box 12.Installed in magnetic stripe mounting box The ultrasonic distance-measuring sensor 16 of 12 one end is connected by the power line 17 installed in the bottom of magnetic stripe mounting box 12 with power outlet 18 Connect, power outlet 18 is connected with conversion electric power 28.
Simulation welding workpiece group III also includes bolt 15, and the bottom of straight trough is provided with two through holes, the bottom of magnetic stripe mounting box 12 Portion is provided with two nuts, and magnetic stripe mounting box 12 is fixed by way of bolt 15 coordinates through through hole with nut with straight trough to be connected Connect.By way of bolt 15 and nut coordinate, magnetic stripe mounting box 12 is fixedly connected respectively at three straight troughs.
Straight trough of the magnetic stripe mounting box 12 face-up with the top of locating rack 11 is connected by bolt 15 with the cooperation of nut, It is connected by stator 14 face down of magnetic stripe mounting box 12 and the straight trough on the top of locating rack 11.Stator 14 is set There are four through holes, each two through hole is one group, and stator 14 is fixedly connected by bolt 15 through one group of through hole with straight trough, magnetic stripe The face down of mounting box 12 is fastened on stator 14 by bolt 15 through another group of through hole.
Single pole double-acting cylinder 31 is installed, it is double that test inductive head 33 is arranged on single pole on the lever 32 of simulated electrode group I The piston rod head of active cylinder 31, test inductive head 33 are provided with magnetic inductor A33-1, magnetic inductor B33-2, magnetic inductor C33-3, buzzer 34 and LED lamp bead 35, magnetic inductor A33-1, magnetic inductor B33-2, magnetic inductor C33-3 are separately mounted to Different height inside magnetic induction head, the height spacing between magnetic inductor B33-2 and magnetic inductor C33-3 are 2mm-4mm. LED lamp bead 35 is fixedly connected on test inductive head 33 front end, and LED lamp bead 35 is that astigmatism type highlights red lamp bead, LED lamp bead 35 Aperture size is variable with shading value.The outside of LED lamp bead 35 is additionally provided with lampshade 36, and lampshade 36 has tip.
Magnetic stripe 13 and magnetic inductor A33-1, magnetic inductor B33-2, magnetic inductor in magnetic stripe mounting box 12 C33-3 is engaged.The magnetic force of magnetic stripe 13 is selected according to the distance at the tip of lampshade 36 and the surface of magnetic stripe mounting box 12, and magnetic stripe 13 Accommodation is carried out with the distance between magnetic inductor A33-1, magnetic inductor B33-2, magnetic inductor C33-3.Make lampshade When the distance at 36 tips and the surface of magnetic stripe mounting box 12 is 2mm-4mm, magnetic inductor A33-1 triggerings, when distance is less than 2mm, magnetic Inductor B33-2 is triggered;When distance is more than 4mm, magnetic inductor C33-3 triggerings.
Simulate in electric welding machine II, pneumatic triplet 22, two-position three-way hand change valve 25, two-position five-way solenoid directional control valve 23 It is sequentially connected with single pole double-acting cylinder 31, is also associated with unidirectionally saving between two-position five-way solenoid directional control valve 23 and single pole double acting Valve 24 is flowed, power switch 26 is connected with conversion electric power 28.
Magnetic inductor A33-1, magnetic inductor B33-2, magnetic inductor C33-3, buzzer 34, LED lamp bead 35 pass through series connection Mode be connected with conversion electric power 28;The input of programmable controller 27 is connected with ultrasonic distance-measuring sensor 16, can be compiled The output end of cyclelog 27 is connected with LED lamp bead 35.
Below in conjunction with the accompanying drawings and embodiment describes the operation principle of the present invention:
(1)Prepare before start.
First have to choose one kind in a kind of welding position i.e. downhand welding, vertical position welding, horizontal position welding and overhead welding, by magnetic stripe mounting box 12 It is fixedly connected with straight trough.Wherein, straight trough of the magnetic stripe mounting box 12 face-up with the top of locating rack 11 is fixedly connected as downhand welding, magnetic The face down of bar mounting box 12 is fixedly connected as welding in the overhead position by stator 14 and the straight trough on the top of locating rack 11, magnetic stripe mounting box 12 The straight trough parallel to the ground with being located at the side of locating rack 11 is fixedly connected as horizontal position welding, and magnetic stripe mounting box 12 is with being located at the side of locating rack 11 Face straight trough perpendicular to the ground is fixedly connected as vertical position welding.
Operator one holds grip handle 32, and another hand first revolves the nut for simulating one-way throttle valve 24 on electric welding machine II " 0 " position is gone to, the burning movement velocity of representative simulation welding rod is most slow.When operator turns on the power switch 26, can be manually rotated two During switch to the "ON" position of position threeway hand-operated direction valve 25, pneumatic circuit is switched on, the piston rod of single pole double-acting cylinder 31 Do quick stretch out to move, and stop after reaching maximum stroke, in stand-by operation state, be clamped in equivalent to new welding rod The state of preparation on welding gun.
Piston rod movement speed can be adjusted by the nut of the one-way throttle valve 24 in rotary simulation electric welding machine II(Quite In practical operation, the size of the welding current of electric welding machine is adjusted).
(2)Striking operation training.
Striking refers in welding, makes welding material(Welding rod, welding wire etc.)Ignite the process of electric arc, in welding process, weldering The welding rod or electrode of rifle and the distance of workpiece are maintained at the technical requirements that 2mm-4mm is industry field.
Instrument for training of the present invention simulates arc process, should be first by simulation electric welding machine II when operator needs to start training The nut of one-way throttle valve 24 rotate to a suitable gear, beginner and can first select relatively low gear.Now, operator is Striking can be started, operator holds lever 32, test inductive head 33 is streaked on the surface of magnetic stripe mounting box 12, magnetic stripe 13 and test Magnetic inductor in inductive head 33 coordinates.Magnetic stripe mounting box 12 is provided with fixed test point, tests the lampshade 36 of inductive head 33 Tip can trigger magnetic inductor A33-1 by improving 2-4mm during test point rapidly, is also turned on circuit and lights astigmatism type height Shiny red LED lamp bead 35, and the electromagnet coil circuit of two-position five-way solenoid directional control valve 23 is connected so as to switch its operating position, The piston rod of single pole double-acting cylinder 31 is set to do retraction movement, representative successfully completes striking operation.
After piston rod is fully retracted on earth, only power switch 26 need to be torqued into "Off" gear and can be manually rotated two During the switch of threeway hand-operated direction valve 2525 to off-position, you can cut-out gas circuit, circuit, equipment return to original state.Need again During task, above-mentioned action process is repeated.
(3)Arc manipulation is trained.
In arc manipulation training process, used to embody the size of welding pool in the test one astigmatism type of installation of inductive head 33 Highlighted red LED lamp bead 35, using the change of its aperture size and shading value come simulated implementation.The size in molten bath in actual welding Change mainly with two relating to parameters:First, the space length of welding rod and workpiece is big apart from small molten bath, small apart from big molten bath;The Two, translational speed of the welding rod along weld seam, the fast molten bath of speed is small, and the slow molten bath of speed is big.LED lamp bead 35 is fixed on test with lampshade 36 The front end of inductive head 33, test inductive head 33 it is nearer apart from the surface of magnetic stripe mounting box 12, the aperture of LED lamp bead 35 is smaller, it is on the contrary then Become big, you can indirectly show change of the molten bath size because of welding rod and the space length of workpiece.It is provided with simulation workpiece group Ultrasonic distance-measuring sensor 16 is used for the change for measuring the space length between test inductive head 33 and ultrasonic distance-measuring sensor 16 Change, then the translational speed of test inductive head 33 is obtained that is, weldering by the computing of the internal processes of programmable controller 27 Connect speed.Result of the rate of change of this translational speed through the internal processes computing of programmable controller 27, then it is defeated by analog quantity Go out end to adjust the change of the shading value of LED lamp bead 35.Only the shading value of LED lamp bead 35 is held essentially constant just expression welding pool Size it is basically identical, it is on the contrary then represent molten bath and become big or diminish, that is to say and embody translational speed of the welding rod along weld seam to molten The influence of pond size.
The circuit theory diagrams of programmable controller 27 are shown in Fig. 8, and those skilled in the art are easily designed according to demand Programming.
Specifically training process is:After completing striking operation, the still hand-held lever 32 of operator starts to do arc manipulation action, is divided into For three parts:Welding rod feeding, move to welding direction and weaving.During arc manipulation, it is desirable to test sensing The first 33 distance between two tips simulation workpiece surface of lampshade 36 keeps 2mm-4mm space lengths.If space length is less than 2mm, test Magnetic inductor B33-2 in inductive head 33 can be immediately detected distance and be less than setting value, and circuit disconnects, and buzzer 34 sends prompting Alarm sound to prompt operator, extinguish, it is necessary to restart striking operation again by LED lamp bead 35.If space length is more than 4mm, the magnetic inductor C33-3 tested in inductive head 33 can detect that distance is more than setting value immediately, and circuit disconnects, buzzer 34 Prompting alarm sound is sent to prompt operator, LED lamp bead 35 is extinguished, it is necessary to restart striking operation again.
Operator should ensure the distance between two tips simulation workpiece table of lampshade 36 of test inductive head 33 in arc manipulation training process Face is kept in the range of 2mm-4mm space lengths, and notices whether the aperture for observing LED lamp bead 35 is in the same size, if any big ripple It is dynamic to make corresponding adjustment at once.If operator moves the excessive velocities or excessively slow of simulated electrode, red on simulated electrode The shading value of color LED lamp bead 35 can change immediately shows that the size of welding pool is changing, and now operator should Immediately regulation speed of welding, to ensure to weld the uniformity of translational speed.
(4)Sub-item is trained.
Due to beginner's hand, eye, brain exercise not harmony, just start training when often have some setbacks.It is contemplated that in downhand welding It is striking training, feeding training, speed of welding training, welding arc manipulation synthesis instruction to carry out sub-item training under the state of welding position Practice, molten bath size controlled training, after this project is skilled, can just carry out vertical position welding, horizontal position welding and the different welding positions of overhead welding respectively Related training.

Claims (7)

  1. A kind of 1. manual arc welding simulated instrument for training of magnetic inductive, it is characterised in that:Including simulating welding workpiece group(Ⅲ), simulation Welding rod group(Ⅰ)With simulation electric welding machine(Ⅱ), the simulation welding workpiece group(Ⅲ)Including locating rack(11), magnetic stripe mounting box (12), magnetic stripe(13), ultrasonic distance-measuring sensor(16), power line(17)And power outlet(18), locating rack(11)Upper setting There are three straight troughs, two straight troughs are arranged on locating rack in right-angled intersection(11)Side, a straight trough is arranged on locating rack(11) Top, the size of straight trough and magnetic stripe mounting box(12)It is adapted, magnetic stripe mounting box(12)It is detachably connected and is fixed on straight trough, magnetic Bar(13)Installation is connected to magnetic stripe mounting box(12)In;Installed in magnetic stripe mounting box(12)The ultrasonic distance-measuring sensor of one end (16)By installed in magnetic stripe mounting box(12)The power line of bottom(17)With power outlet(18)Connection;
    The simulated electrode group(Ⅰ)Including:Single pole double-acting cylinder(31), lever(32)With test inductive head(33), lever (32)On single pole double-acting cylinder is installed(31), test inductive head(33)Installed in single pole double-acting cylinder(31)Piston rod Head, test inductive head(33)Magnetic inductor A is installed(33-1), magnetic inductor B(33-2), magnetic inductor C(33-3), buzzing Device(34)And LED lamp bead(35), magnetic inductor A(33-1), magnetic inductor B(33-2), magnetic inductor C(33-3)It is separately mounted to Different height inside magnetic induction head, LED lamp bead(35)It is fixedly connected on test inductive head(33)Front end;
    The simulation electric welding machine(Ⅱ)Including:Installed in casing(21)Interior pneumatic triplet(22), two-position five-way electromagnetic switch Valve(23), one-way throttle valve(24), two-position three-way hand change valve(25), power switch(26), programmable controller(27) And conversion electric power(28), pneumatic triplet(22), two-position three-way hand change valve(25), two-position five-way solenoid directional control valve(23)With Single pole double-acting cylinder(31)It is sequentially connected, two-position five-way solenoid directional control valve(23)It is also associated between single pole double acting unidirectional Choke valve(24), power switch(26)With conversion electric power(28)Connection;
    Power outlet(18)With conversion electric power(28)Connection, magnetic inductor A(33-1), magnetic inductor B(33-2), magnetic inductor C (33-3), buzzer(34), LED lamp bead(35)By way of series connection and conversion electric power(28)Connection;Programmable controller (27)Input and ultrasonic distance-measuring sensor(16)Connection, programmable controller(27)Output end and LED lamp bead (35)Connection.
  2. 2. the manual arc welding simulated instrument for training of magnetic inductive according to claim 1, it is characterised in that:The simulation welding Workpiece group(Ⅲ)Also include bolt(15), the bottom of straight trough is provided with two through holes, magnetic stripe mounting box(12)Bottom be provided with two Individual nut, magnetic stripe mounting box(12)Pass through bolt(15)It is fixedly connected through through hole with the mode that nut coordinates with straight trough.
  3. 3. the manual arc welding simulated instrument for training of magnetic inductive according to claim 2, it is characterised in that:The simulation welding Workpiece group(Ⅲ)Also include stator(14), magnetic stripe mounting box(12)Face down passes through stator(14)With locating rack(11)Top The straight trough connection at end.
  4. 4. the manual arc welding simulated instrument for training of magnetic inductive according to claim 3, it is characterised in that:The stator (14)Four through holes are provided with, each two through hole is one group, stator(14)Pass through bolt(15)Through one group of through hole and straight trough It is fixedly connected, magnetic stripe mounting box(12)Face down passes through bolt(15)Stator is fastened on through another group of through hole(14) On.
  5. 5. the manual arc welding simulated instrument for training of magnetic inductive according to claim 1, it is characterised in that:The magnetic inductor B(33-2)With magnetic inductor C(33-3)Between height spacing be 2mm-4mm.
  6. 6. the manual arc welding simulated instrument for training of magnetic inductive according to claim 1, it is characterised in that:The LED lamp bead (35)Red lamp bead, LED lamp bead are highlighted for astigmatism type(35)Aperture size and shading value it is variable.
  7. 7. the manual arc welding simulated instrument for training of magnetic inductive according to claim 1, it is characterised in that:The LED lamp bead (35)Outside be additionally provided with lampshade(36).
CN201711032603.XA 2017-10-30 2017-10-30 Magnetic induction type manual electric arc welding simulation training instrument Expired - Fee Related CN107644579B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108526667A (en) * 2018-03-23 2018-09-14 宁夏特鑫焊接热喷涂有限公司 Plasma (orifice) gas planing system for cement roller gouge

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CN1866317A (en) * 2006-06-09 2006-11-22 西安交通大学 Simulative training device for manual arc welding operation
CN102083580A (en) * 2008-07-04 2011-06-01 弗罗纽斯国际有限公司 Device and method for simulating a welding process
US20140065584A1 (en) * 2009-07-10 2014-03-06 Lincoln Global, Inc. Virtual testing and inspection of a virtual weldment
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108526667A (en) * 2018-03-23 2018-09-14 宁夏特鑫焊接热喷涂有限公司 Plasma (orifice) gas planing system for cement roller gouge

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