Wire Feed:

The way filler metal , in manual welding is added up to the pool effect the number of passes needed and the appearance of the finished weld.

In automatic and machine welding, wire feed speed find out the amount of filler deposited per unit length of weld. Reduced wire feed speed will enhanced penetration and flatten bead contour. Feeding the wire too gradually can lead to undercut, centreline cracking, and lack of joint fill. Improved wire feed speed reduced weld penetration and generated a more convex weld.