Paton StandardMIG-160 Data Sheet And Operating Manual

Paton StandardMIG-160 Data Sheet And Operating Manual Manual pdf 23 page image

-23 - PATON StandardMIG MMA/TIG/MIG/MAGIt is used in welding of long length welds. The function is as follows: when firstpressing the button on the torch, the control signal enters the control unit, thefunction of pre-purging the welding zone with gas (the gas valve is opened) isprocessed, then, after the first release of the button, a signal is given to turn on thesource and the wire feed motor. From now on, the welding process begins; at thesame time, the function of smoothly entering the welding mode during the [t.uP]time is worked out, as well as additional functions can be worked out (for example,a pulsed mode, which we will discuss in detail in the following paragraphs)—all thisis shown on the cyclogram in Clause 5.2, according to the cycle of the weldingprocess. After the second press of the torch button, the function of arc voltagefade‐out and wire-feeding speed during the [t.dn] time is tested, and then thesource turns off. After the second release of the button, the function of thepost‐purging of the welding zone with shielding gas during the [t.Po] time isworked out (the gas valve is closed with a delay).In the alternative mode, unlike the 4T global standard, the system does notwait for the first release of the torch button, and immediately after testing thefunction of pre-purging the welding zone with gas during the [t.Pr] time, theprocess of arc striking starts—this is similar to that in the 2T button mode. Thismode is provided by the PATON Company as a bonus; it can be used only at will,since it is more familiar from the point of view of more frequent use of 2T mode bycustomers in classical semiautomatic machines, and therefore, it is more intuitive.5.3 FUNCTION OF PRE‐PURGING WITH SHIELDING GASThis function is necessary to protect the weld zone from the harmful effects ofatmospheric air and consists in pre-purging the weld zone with shielding gasbefore the arc striking. By default, the pre-purging time [t.Pr] is set to 0.5 seconds;this value can be changed at any time at your discretion. See Clause 6.1 forsequence of changing the value of any function in the current welding mode. Usethe right indicator of the wire-feeding machine.5.4 WIRE‐FEEDING SPEED FADE‐IN FUNCTIONThis function is necessary for a smooth transition to the welding mode for aset time [t.uP], which reduces spilling of the weld pool and splashing at the time ofarc striking, when the wire is still cold. The increased time of a smooth transition isapplied to the initial formation of the pool.ATTENTION! The longer the rise time, the lower the initial penetration, so it isused only for medium and long length welds. For this reason, do not increase thetime more than 0.1 seconds when welding with tick welds, etc.