7 Questions 1 Answers 0 Followers
Questions related from Nivas Ramachandiran
Antiferromagnetic materials, by forming magnetic domain couples of the same magnitude in antiparallel direction, nullify each other resulting in zero magnetic moment. Similarly, ferrimagnetic...
27 February 2017 4,947 2 View
As per the laws of friction, contact area does not have any impact on the frictional force. I welded Al 2021 alloy by FSW with two tools, such that they differ by their shoulder diameter (18 mm...
25 January 2017 9,987 4 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?
26 October 2016 7,066 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?
26 October 2016 10,109 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...
26 October 2016 4,095 3 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...
05 October 2016 8,935 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
03 October 2016 6,607 2 View
