10 Questions 4 Answers 0 Followers
Questions related from Nivas Ramachandiran
The electrical conductivity of bronze is lesser than copper but its still higher than that of steel with good mechanical properties. Why it could not be a successful replacement for copper electrodes?
01 January 2018 5,908 2 View
Only two electrons act in a co-ordinated way. Why this is not extended to an infinite chain of electrons?
03 March 2017 1,661 1 View
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01 January 2017 7,508 0 View
Cathodic cleaning which takes place in GTAW with AC polarity helps in welding reactive metals as during DCEN cycle the surface oxide layer gets cleaned and during DCEP cycle welding takes place....
12 December 2016 8,646 1 View
high form factor leads to the growth of columnar grains upward directed from the side wall to the weld centre & lesser form factor results in the growth of columnar grains downward. why?
10 October 2016 3,874 2 View
Constant voltage power source is said to have better control over the parameters in a mechanised process. But still why do we prefer CC power source for SAW?
10 October 2016 6,813 6 View
The thin air column gets ionised which creates a bridge for the transfer of charged particles from electrode to workpiece and vice versa. This creates an arc. This concept holds good for SMAW,GMAW...
10 October 2016 8,999 1 View
I could see the text explaining DCEN gives more penetration. but could not understand why only in FCAW (not in SMAW or GMAW) it is preferred
10 October 2016 9,654 2 View
Form factor = width of the molten metal/depth of the molten metal & higher form factor gives good resistance from cracking. But how the width & depth are measured in practise?
10 October 2016 3,462 1 View
Since the cooling is very slow, we get coarse grained weak weld region. isnt? The plates that are joined are huge structures. So are they subjected to any kind of local heat treatment (Induction...
10 October 2016 3,929 2 View
