How many of you use a pulser on your sched 10 or sched 40 manifolds?

I just installed the pulser in my 250dx syncrowave and im trying to figure out what would be a good starting point on stainless.

Aluminum was very easy to figure out, but ive always had a problem with stainless not being colorful (almost hot looking at times)

I have been doing them at 85 amps during a quick paced root purge pass (i get full penetration this way) and if its schedule 10, 1 filler pass. If its Sched 40, 2 filler passes @ 65amps.

The welds tend to almost look cold and rigid (like its not hot enough to smooth out). I have to walk the cup or they wont spread out either. I tried my welder on 90 amps today with 50% background amps, 1 peak per second and 50% time in peak amperage. It looked better as far as not looking cold goes, but it wasnt extremely colorful, nor was it wide and spread out.

I use a gas lense, #20 torch and cfm = 32. Any input would be greatly appreciated.

 

thats a lot of gas. most people use ~16-19

 

what would be the result of using too much gas?

 

How do you clean your metal?

 

i use a wire wheel on a bench grinder then wipe it down with acetone.

 

I never go below 21cfh...just works the best in my opinion. I also use at least a 10 sec. post purge minimum.

 

Personally I hate the pulser. Never could get used to it. Just leave it off.

 

bump. whats your amperage for this type of stuff regardless of cfm?

do you guys go fast with a higher amperage, or slow with a lower amperage. Hit me with some info so i can try some new stuff.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RC000E &raquo;</TD></TR><TR><TD CLASS="quote">I never go below 21cfh...just works the best in my opinion. I also use at least a 10 sec. post purge minimum.</TD></TR></TABLE>

exactly. are you pulling the torch away from the weld right after you stop the weld? you need to keep the gas flowing over the weld area until its not glowing red anymore or it becomes contaminated. if you dont do that there will be no color. try using a 10 sec post purge then slowy walk the torch back and forth over the weld section while the gas is purging.

 

are you welding in a inert atmosphere (purging)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CoreyR &raquo;</TD></TR><TR><TD CLASS="quote">

exactly. are you pulling the torch away from the weld right after you stop the weld? you need to keep the gas flowing over the weld area until its not glowing red anymore or it becomes contaminated. if you dont do that there will be no color. try using a 10 sec post purge then slowy walk the torch back and forth over the weld section while the gas is purging.

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To an extent....although you will get a "nicer" color by not stopping the torch, keeping a consistent torch angle and not goin back and forth over the weld section letting the gas flow.

 

i ran my stuff at about 50-60 amps and went fairly slow, my gas out of the torch was at about 10-15cfm with a backpurge about the same and my stuff came out just fine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CoreyR &raquo;</TD></TR><TR><TD CLASS="quote">

exactly. are you pulling the torch away from the weld right after you stop the weld? you need to keep the gas flowing over the weld area until its not glowing red anymore or it becomes contaminated. if you dont do that there will be no color. try using a 10 sec post purge then slowy walk the torch back and forth over the weld section while the gas is purging.

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I have my macine running gas for 9 seconds after the weld And i generally run the torch in the last few inches of weld for those 9 seconds.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HT Chaplain &raquo;</TD></TR><TR><TD CLASS="quote">are you welding in a inert atmosphere (purging)</TD></TR></TABLE>
I am not welding inside of a welding chamber if thats what you mean. Im on a workbench with the work piece on top. On my first pass i have a regulator with a fitting welded to a 1.5" schedule 40 pipe cap taped on with masking tape to the runner im welding, with another cap on the far end of the runner.

I have been doing 5cfm on the purge and about 28cfm out of the torch. I have been getting penetration, and nothing is breaking or cracking, its just not as pretty. I dont know how welders like turbo jesse from afi and these other builders get the welds and the flow like that. Maybe its the camera, but i look at welds from code@lovefab, he gets these big fat beads without walking the cup.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ls1_datsun &raquo;</TD></TR><TR><TD CLASS="quote">

To an extent....although you will get a "nicer" color by not stopping the torch, keeping a consistent torch angle and not goin back and forth over the weld section letting the gas flow.</TD></TR></TABLE>