As inversion technology and the progress that show acting digitlization to control a system, make the application that exceeds spray transfer of short arc voltage to solder becomes a possibility. New-style welder has enough fast adjustment speed, before voltage of normal electric arc is achieved after short circuit disconnects, control lives solder exorbitant growth of electric current, also control the output energy of the welder inside unit time at the same time. The spray transfer in summarizing gas to protect solder is soldering actually the application in the operation is wide. Spray transfer goes out to be used now commonly bigger solder below electric current and the circumstance when using inert gase or gas of mix up of Gao Han argon. 20 centuries 80 time end, german standard DIN 1910-4 made following definitions to spray transfer, "In spray transfer welding wire frit drips is transfer with the means of imperceptible grain in welding line, frit drips short circuit won't appear in transferring. " the voltage of the electric arc when spray transfer is taller, that is to say electric arc is longer (if pursue,1 is shown) . Right now electric arc stability is reduced, electric arc suffers magnetism to slant the effect that play is easy produce deflection, appear easily welding line bites edge and stoma generate, be opposite additionally of alloy burn caustic more serious also. At this moment, produced adverse effect to the actual application of spray transfer. Graph 1 exceed eject of short arc voltage to solder extremely fused gas protects one of solder pioneer -- Hans-Ulrich Pomaska Ceng Di has gone out " the short arc that energy centers spray transfer " method. This kind of method is a few of electric arc voltage spray transfer is reduced, the result is to soldering short circuit cannot avoid completely in the process. If short circuit duration is very short, although meeting occurrence voltage is steep,fall, but electric current has not enough time to rise substantially however. Solder to also won't appear below this kind of condition splatter, just have a few small splash. The voice that in soldering, hears is slight crackle, is not disorder noise hum, this kind of electric arc is applied very quickly in real work. The definition of the corresponding spray transfer in German standard also instead, "Frit drop transfers is with subtle grain means undertakes, frit drips short circuit appears scarcely in transferring. " if reduce the electric arc tension of spray transfer further, can make the time of frit drop short circuit is lengthened, cause splatter badly. Although be reduced in theoretic hope voltage, but in actual in however heretofore is applied hard. Control systematic development as the development of inversion technology and modern digitlization, make the application that exceeds spray transfer of short arc voltage to solder becomes a possibility. New-style welder has enough fast adjustment speed, before voltage of normal electric arc is achieved after short circuit disconnects, control lives solder exorbitant growth of electric current, also control the output energy of the welder inside unit time at the same time. Can reduce the splattering of the generation when short circuit transfers substantially so, make exceed spray transfer of short arc voltage to be able to apply successfully in real operation. This solders new-styly electric arc form, we say for " EWM ForceArc- exceeds power arc " . Graph the static picture that camera of 2 high speed films " compulsive electric current " compare with photograph of solder of brief spurt arc, "Exceed power arc " solder the technology reduces arc length through reducing arc to press ceaselessly. In the picture of a piece of static state that films from high speed camera (like the graph 2 are shown) can see, electric arc forms bath below plasma pressure, frit drop measure is even, and fashion career very fast. Drip to this type frit, their inevitable meeting now and then felt forms frit drop chain together again bath of bring into contact with, this offerred condition of a short circuit, if did not control systematic interpose,be in in whole process, will form when removing arc afresh bigger splatter. The metabolic circumstance of the electric current below this kind of relatively longer short circuit condition and voltage, we can use the short circuit in short arc solder to cross a cycle that crosses means to explain, this is a very typical procedure. When frit drop and bath are contacted, voltage is reduced above all (like the graph 3 are shown) , because at this moment electric arc resistor and previous relatively lesserer than rising, electric current just can rise to short-circuit current after voltage drop is small. "Compulsive " in eject arc welding, the program prevents energy through control (time of × of voltaic × voltage) leap, soldering so in the process can cross the region that splatters to arise the most easily very quickly, achieve the goal that avoids to splatter thereby. Graph the graph of voltage electric current when 3 short circuit (A) short circuit, (B) and (C) frit drop move, (D) what if use,remove arc afresh is traditional solder power source, let impossibly solder electric current drops inside short time, because be in common power source,this is, as a result of the existence of transformer and reactor inductance, do not allow electric current to have so rapid change rate. And in inversion technology, we are to pass electronic pilot means to control inductance amount. For example, transfer in short circuit in, reactor can be shut completely, between the down-lead of cable of reactance consist in that this means only, be in namely short circuit condition and the rise of the electric current in heavy process removing arc and drop can be adjusted quickly. Can prevent splattering generation completely so. Want to dominate the time that electric current rises and drops accurately, to the voltage of power source feedback loop should have higher demand: Hardware circuit must the change that can collect voltage inside brief time, feedback to dominate return circuit. "EWM exceeds power arc " solder when brief short circuit appearing in the process, voltage and electric current did not appear to fluctuate greatly, this prevented splattering generation. Another advantage of the welder that has this kind of quick reaction is: Welding wire can allow to extend welding torch when solder longer. Some solder place welding torch is achieved not easily, with " EWM exceeds power arc " solder to be able to undertake soldering to these place however. Buildup fused and penetrable character rose to shape significantly the effect, make root ministry shapes more close together, narrower. Graph 4 those who show is puissant exceed power arc solder (left) with solder of arc of convention weak point (right) solder " T " model the effect contrast of contact pursues. Use " EWM exceeds power arc " solder, welding line width is narrower, frit is deep increase. Graph are 4 cross section compared " T " model contact (Zun Tu: ? of exacting Τ " slash shake of blessing brandish Yi OrceArc- exceeds ゝ of blessing of Shan of of white of ∨ of 9 Suo leave uncovered rainwatering in puddles job of new-style electric arc is in the characteristic of power arc spray transfer area. Its solder voltaic limits is in groovy spray transfer electric arc or the voltaic limits of electric arc length arc, compare with photograph of groovy eject arc, new-style arc welding has the following advantage: Thrust of powerful plasma electric arc brought up Gao Rong deep; The can retain electric arc easily way when manual work is stable; Short arc solders avoid to produce welding line to bite an edge; Solder efficiently speed makes work get twice the result with half the effort; High quality welding line is attributed to narrow and small heat to affect an area; Solder energy is small make workpiece is out of shape decrease. ForceArc- exceeds power arc solder power source without doubt, a kind of new-style electric arc must combine a modern welder gift each shining more brilliantly in the other's company. Get inversion power source and digitlization record manage systematic support only, welder ability is had to the operation instruction of the user very tall answer a gender. Implementation exceeds power arc to solder to soldering power source has higher demand, the talent of digitlization control system that uses advanced delicacy in inversion power source only assures to exceed power arc to solder outstandingly the effect. Graph the 5 newest research master piece that are EWM company -- " EWM-forceArc " welder, this machine besides can undertake exceeding power arc solder, still can use at MIG/MAG convention solder, MIG/MAG pulse solder, hand arc solder and TIG solder. The applied domain that ForceArc- of welder of graph 5 PHOENIX 500 EXPERTPULS ForceArc exceeds power arc to solder exceeds power arc to solder the technology applies to industry of mechanical engineering, equipment project, steel structure, shipbuilding, container, high pressure container, equipment to build especially and maritime exercise. Solder applicably material reachs aluminium alloy for carbolic steel, alloy steel, aluminium. Solder material ply is in commonly 5mm above. The diameter of applicable welding wire is 1. 0mm and 1.
2mm (carbolic steel, stainless steel) and 1.
2mm and 1.
6mm (aluminium and aluminium alloy) . Protective gas basis can be used by solder material pure argon or the mix up gas that contain argon high. CNC Milling
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