[TheForge] Gas welding

[Peter Fels and Phoebe Palmer]

At 10:22 AM 2/2/02, you wrote:




>On Sat, 02 Feb 2002 12:05:11 -0600, Dave Brown wrote:
>
> >stick.  You can "push" the puddle around and with practice (more than I
> >have to date)
>
>         Go down one orifice size and up your pressures about 5%.
>The smaller the flame with a higher pressure behind it, the better
>the puddle can be moved.  With practice (the best instructor), you
>can make torch welds that are completely invisible - it looks like
>a one-piece casting.
>
>
>
>Roy Wilson
>General Operations Director
>Zanzibar Internet Land Line Administrator
>
>Different brands of torch have different  inner cone characteristics and 
>favor different techniques. As a tip wears that changes. Some torch 
>sculptors modify the tip oroface  shape  for specialized applications.
You can force the puddle around  with the gas velocity, as Roy points out, 
though some steels won't tolerate that well; Or you can use a slower, 
softer flame to successfully influence the puddle flow. A placid  puddle is 
a good goal. If you are going to rework a torch welded area, it helps to 
chip off the scale.
Given practice, it is possible to build up almost any shape using a torch 
and filler rods.



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