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WIRE MELTING CHARACTERISTICSA non linear relationship exists between the rate at which the wire is fed into the arc and the current required to burn it off to maintain a constant arc length. This is known as the burn off characteristic and differs for each filler wire composition and diameter. The curves shown in Fig. illustrate the burn off characteristics of steel in Argon + O2 mixture. It will be seen that to alter the welding current a proportionate increase in the wire feed rate is required. The smaller the diameter of the wire, the faster is the wire feed speed required to reach the same current.
show that energy is property of system
An air refrigerator operates between the pressure limits of 1 bar and 5 bar. The temperature of the air entering the compressor and expansion cylinder are 15 o C and 25 o C respect
Advantages of resistance welding 1. Resistance welding is very fast compared to arc welding. 2. Almost any combination of metals can be resistance welded provided necessa
Hello, I need some assistance in solving engineering statics problems. In the following link, I have uploaded seven questions. I need help solving these problems step-by-step. I
what is rolling process
what is properties , uses and process ?
Deflection at the centre: A simply supported beam of span 6 m is subjected to Udl of 24 kN/m for a length of 2 m from left support. Discover the deflection at the centre, maxi
Q. Formed heads of vessels? Formed heads are generally of 2:1 semi ellipsoidal form, but other heads may be used, such as hemispherical, torispherical, conical and toriconical.
Flux Cored Arc Welding Single Pass F illet Welds upto (8.0 mm) maximum and groove welds made with a single pass or a single pass each side, may be made using an E70T-X electrod
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