Material solders in efficient MIG/MAG solder the influencing factor of fused efficiency

Time:2023-06-20 10:08:43
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source:PHAUP CNC Machining

[summary] the concept such as the fused efficiency that the article is aimed at efficient MIG/MAG solder, fused rate undertook an analysis, put forward to affect MIG/MAG to solder material is fused the element of efficiency, put forward to rise finally solder material is fused the effective method of efficiency. Extremely fused gas protects solder with its efficient, energy-saving, operation goes to the lavatory simply, the characteristic such as facilitating implementation mechanization and automation, wide application receives in actual production, already became welding rod arc welding replace craft. Current, the MIG/MAG of the industrial developed country such as Western Europe, United States and Japan solders the 60 ％～ that craft occupies all welder to make an amount 80 ％ . Since 20 centuries since 90 time, as the progress that industry produces, tall parameter is changed, thick board, super- thick board solder the application of metallic structure is gotten more and more extensive, each production manufacturer competes to strengthen the market ability, stronger and stronger demand rises solder deliver a child to produce efficiency and reduce manufacturing cost. Existing findings makes clear, if the short of of frit apply rate of welding wire 20 ％ / Min above, satisfy hard namely solder the manufacturing efficiency requirement of the product, also cannot obtain expectant economic benefits. Accordingly, raise MIG/MAG to solder the manufacturing efficiency of craft, it is to rise solder a of ability of product market competition efficient way. Raise solder deliver a child to produce efficiency to basically include two fields: It is solder in order to rise speed solders for purpose high speed, its basic jumping-off place is to rising solder speed while rise solder electric current, solder in order to maintain substantially of hot input quantity keeps changeless, basically use at soldering laminosely; 2 be solder in order to rise the fused rate of material is rate of apply of purpose tall frit to solder, ask to more fused soldering is in inside unit time namely material, the article basically undertakes research discussion in the light of the 2nd respect. 1.

Solder the fused efficiency of material wants to rise solder the fused efficiency of material, should soldering certainly rise below normative premise solder the fused rate of material, because this always can rise,solder the method of fused rate and measure can improve data solder the frit apply efficiency of material. The definition of fused rate is an unit material solders fusedly inside time (fill metal and mother capable person) weight, it is implementation efficient solder the factor with the mainest method. To extremely fused gas protects solder, fused solder the energy of material is comprised by two parts, one part is the energy C1 that electric arc produces; Another part is the resistor hot C1 that does stretchy part generation in welding wire, if pursue,1 is shown. 2.

Solder material is fused the influencing factor of efficiency (1) solders electric current wants to raise fused rate, increase solder electric current is necessary, as solder voltaic accretion, solder the fused rate of material can rise apparently. But will tell to the welding wire of certain diameter, its voltaic capacity has certain restriction. Should solder when electric current increases fixed rate, solder electric arc configuration and frit drop transfer the form will produce apparent change. When using filament, solder electric current increases certain level to meet what do not stabilize into the person rotate efflux transfers, right now frit drop often is transverse cast piece become splatter, solder the process is very flabby calm. If use thick silk big electric current to solder,be like SAW, as solder of electric current increase, the fused rate of welding wire rises, but also rise subsequently to the hot input of workpiece at the same time, solder hot input volume rises, this to excel in steel and special purpose material soldering is very incommensurate. Below this kind of circumstance, want to be in assure to solder solder deliver a child rises to produce efficiency below the premise of quality, must rising solder electric current while auxiliary and other technology measure. (2) welding wire is dry extend length soldering identically below voltaic circumstance, those who increase welding wire is dry the fused rate that extends length to also can raise welding wire. Graph the ohmic heat that 1 medium C2 shows to arise on welding wire and voltaic square become direct ratio, this are very important to raising the fused rate of welding wire. Because the resistor rate of welding wire also is met as welding wire temperature lift and rise, as solder voltaic addition, the resistor rate of welding wire also can rise. Graph 2 do the relation curve between the efficiency of apply of welding wire frit when extending length and electric current to differ 3 kinds. By the graph 2 can see, soldering identically below voltaic circumstance, as do those who extend length to increase, the frit apply efficiency of welding wire rises apparently. When because this is in,big electric current solders, the fused rate that heats up pair of welding wire in the ohm of the generation on welding wire is having crucial effect. (When 3) polarity uses different polarity to undertake soldering to the influence of frit apply efficiency, the frit apply efficiency of welding wire and mother capable person is different. Normally the circumstance falls, extremely fused aeriform protection solder uses DCEP(dc to receive) instead, because DCEP can realize bigger frit,mix greatly the defect that can prevent frit deep inadequacy. Graph 3 with the graph 4 gave out polarity and frit are deep and the relation between the frit apply efficiency of welding wire. Can see, dc is received instead can obtain bigger frit deep, but the frit apply efficiency of welding wire is lesser; DCEN(dc is being received) can achieve efficiency of taller apply of welding wire frit, but the frit of mother capable person is deep lesser. From the graph 3 with the graph 4 can see, the frit apply efficiency of the fused rate that can adjust mother capable person through changing polarity and welding wire, satisfy thereby solder differently the requirement of craft. If ask the frit that increases mother ability is deep, can use DCEP; If solder when thin plate, can use DCEN, the frit that reduces mother ability thereby is deep, and the fused efficiency that increases welding wire, final implementation high speed is efficient solder. (The influence of diameter of 4) welding wire pursues the 5 welding wire that showed different diameter are in different solder efficiency of apply of the frit below normative parameter. Can see from this, soldering identically below voltaic circumstance, as welding wire diameter reduce, solder current density rises, the frit apply efficiency of welding wire also rises; Contrary, if carry frit apply efficiency certain, as welding wire diameter reduce, solder electric current is reduced, the corresponding hot input to workpiece also decreases, fall in the premise of identical frit apply efficiency namely, can reduce the hot input of pair of mother capable person, of steel of this pair of excel in and special purpose steel soldering is very advantageous. So, welder author is studying efficient MIG/MAG solders when craft, use filament big electric current to solder mostly, exploited afore-mentioned advantages just about. If TIME solders,craft is used 1.

The welding wire of 2mm, top rate sending silk can amount to 50m/min. The welder such as LINFAST and double silk TANDEM art all use 1.

The filament of 2mm. Using the another good point that filament solders is when small electric current solders the stability of electric arc rises, reduce to the wallop of bath, maintain frit to agree greatly equably thereby. (The research that 5) protects aeriform influence to protect gas in the light of MIG/MAG has been begun a lot of year, protective gas is soldering main show is in the action in the process the following respects: ① increases electric arc stability. ② improves frit drop to transfer. ③ raises welding line mechanical properties of metals. ④ raises solder deliver a child to produce efficiency. ⑤ reduces the possibility of weld defects, such as stoma, incomplete fusion. Additional, because differ,aeriform physics, chemistry differs, it is soldering the function since the place in the process is not same also, because this pair protects aeriform choice, should be aimed at different craft condition, different application situation and differ somewhat. Graph the rule that the 6 electrical conductivity that showed different gas change as temperature. By the graph 6 can see as temperature rise, of gas decompose and ionization is more easy, because this makes aeriform electrical conductivity as temperature rise and rise. The graph shows the relation curve between the thermal conductance that is gas and temperature 7 times. Aeriform thermal conductance is a when protect gas very main character, it is affected directly solder the temperature of electric arc and configuration and welding line figuration. By the graph 7 can see, gas of hydric, oxygen, CO2 is in microtherm (taller thermal conductance is had when 3000K) about, and helium gas and argon gas are in high temperature (taller thermal conductance is had when 9000K) about. MIG/MAG solders uses gas is normally oxygen or CO2 gas are joined on pure tritium, CO2 and Ar-He compound foundation, will increase the oxidation power in gas. Current, welder author protected aeriform research to obtain a lot of positive result to MIG/AG solder, be in especially efficient (apply leads Gao Rong) soldering protective gas. Be like TIME gas (Ar/8 ％ CO2/0.

5 ％ O2/26.

％ He/Ar) of CO2/30 of ％ of Corgon He30(10 of gas of 5 ％ He) , LINFAST. Afore-mentioned gas although composition difference, but realized welder of efficiency of tall frit apply art. So, what does protective gas have to affect to the frit apply efficiency of welding wire? To show this problem W. Lucas and M. Suban and J. The metabolic circumstance of the efficiency of apply of welding wire frit below the circumstance that Tusek protects to different medium undertook experimenting study, graph 8a is W. Lucas 5 is planted the efficiency of apply of welding wire frit that gains below the different situation that protects aeriform protection changes circumstance. Graph 8b is M. Suban and J. The welding wire that gets below the circumstance that Tusek protects to different protective gas fuses rate changes circumstance. Consider to make clear, the form that the gas of different composition transfers to drop of the character of electric arc, frit and solder the character of bath has bigger effect, and it is very finite to the influence of the fused rate of welding wire. Be based on afore-mentioned results, should ask according to different technology when the choice protects gas (solder the ply of the composition of material, material and solder the position) the protective gas with different choice. 3.

Epilogue (1) increases solder electric current can rise apparently solder the fused efficiency of material, but in increase solder electric current while should assist other technology measure, ability assures to solder technology is good. (Grow what 2) increases welding wire at extending degree, having crucial effect to improving the frit apply efficiency of welding wire. (3) chooses welder of filament big electric current art, can improving efficiency of apply of welding wire frit while, reduce the hot input of pair of mother capable person, be helpful for excel in steel and the stuff that have special purpose solder. (4) choice DCEP can obtain bigger frit deep, use DCEN to be able to improve the frit apply efficiency of welding wire, comfortable solder at laminose high speed. (The impact of the frit apply efficiency of the composition row welding wire of 5) protection gas is not big, but, protective gas can increase the stability of electric arc, improve frit drop to transfer, extend solder normative scope of application. Choose little helium to perhaps do not have the gas mixture with the low price of helium, replace 3 yuan or gas of 4 yuan of rich helium, again auxiliary and other technology measure (field control) , the stable frit drop that can come true to fall in circumstance of filament big electric current transfers, this efficient to low cost MAG solders new technology has very important real sense. CNC Milling CNC Machining