Answer / gurmeet singh

I aluminium welding, we have a aluminum oxide layer over
the metal surfae, which is genrally formed in free aluminum
surfaces. This oxide ;ayer is not removed by brushing. So
we have to use the cleaning action whichin the welding
process. So during aluminium welding, we use AC power
source, which given sine wave. This cause the breakdown of
oxide layer of aluminium.

And in general arc welding technology, we use DCRP or DCSP
i.e. reverse or straight polarity for welding.

Answer / mahmoud talafha

there is no difference the general arc welding its the basic way of welding. aluminium welding it Subsidiary to general arc welding .

Answer / unemployed

can we not use aluminium in arc welding?is the aluminium
welding not use in arc welding?arc is only the gap form
between cathode and anode

how many psi to one bar?

6 Answers  

---

Name the device which converts sound energy into mechanical energy?

0 Answers  

---

why we do not megger to motor under system is very high vaccum condition. and what is the tempreture of vaccum conditon

0 Answers   Daikin,

---

What valves are fitted in a four-stroke diesel engine?

1 Answers  

---

Why big tyres are used for rear wheel ?

3 Answers  

---

What is gtsc technology?

0 Answers  

---

What is the ADP&PDP in air dryer?

2 Answers   Godrej,

---

What are the causes if one cylinder in a diesel engine has a high temperature?

0 Answers   RRB,

---

How to exite natural frequencies in a overhung rotor

0 Answers   Honeywell,

---

why different types of sound are produced in different bykes though they say run on SI engine

3 Answers   Honda,

---

hi friends, i want to know full depth of regarding mechanical seals

1 Answers  

---

please send me jindal interview question if any one have?? my id is erabhishekparashar@gmail.com thnx in advance

0 Answers   Jindal,

---