what do you guys think of this ramhorn
01-27-2007, 02:20 PM
#33
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Join Date: Feb 2005
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Re: what do you guys think of this ramhorn
Originally Posted by BigWheeze
There you go. omgmasterwelder just pointed out why peoples manifolds crack and fall apart. omgmasterwelder bmc has welded alot of SS and might chime in on his experience with this.
Originally Posted by saltyhooter
head flange isnt welded yet. i will backpurge it beforte the final weld.
01-27-2007, 02:28 PM
#34
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Join Date: Nov 2006
Posts: 768
Re: what do you guys think of this ramhorn
Rawr, you dont understand that metal where I marked is now sugared creating a weak point regardless of purging and not finished welding. Been there done that. No replacement for experience. The chain is only strongest as the weakest link
01-27-2007, 02:39 PM
#35
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Re: what do you guys think of this ramhorn
Then explain it insted of trying to be an elitist welder dick? kthnks. There's a good chance josh is using countersunk headflanges too. So, that might not be the primary joint for the weld.
01-27-2007, 02:44 PM
#36
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Join Date: Nov 2006
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Re: what do you guys think of this ramhorn
Originally Posted by rawr
Then explain it insted of trying to be an elitist welder dick? kthnks. There's a good chance josh is using countersunk headflanges too. So, that might not be the primary joint for the weld.
01-27-2007, 02:48 PM
#37
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Join Date: Feb 2005
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Re: what do you guys think of this ramhorn
Plus I seriously ------- doubt 4 little contaminated tack welds are going to comprimise the streignth of the entire ------- manifold.
doesn't sound like it really matters on a turbo manifold.
Plus, you can get any element to drop its bind with oxygen atoms, its not rocket science. just electropolish, or just ------- grind off some metal and throw a small peice of stainless in and weld it right.
Peoples manifolds fell apart because josh was welding ---- up in a hurryfull drunk and ripped in his garage to catch up.
Purging
Purging, especially of the weld interior, is critical for achieving a high level of purity in a piping system. If no purge at all were used on the weld interior during the weld, the resulting weld area would be black and crusty from oxidation. This condition is called "sugared" as it resembles burnt carbonized sugar. If a purge is used, but the duration is not sufficient to replace the atmosphere with highly purified argon, or if the argon is contaminated with atmospheric oxygen or moisture, a weld with varying amounts of blue, gray, or brownish discoloration will result. This discoloration is referred to as "heat tint". Heat tint is undesirable and has been associated with an increased rate of corrosion. There is also the fear that the products of oxidation, especially of the type which can easily be wiped off, will result in contamination of the gases that are transported through the piping system. Achieving a weld interior with no sign of discoloration resulting from oxidation requires special care. For this installation, special cryogenic dewars of liquid argon certified for UHP applications to be 99.999% pure were used for purging the weld head and interior of the tubing during welding.
Purging, especially of the weld interior, is critical for achieving a high level of purity in a piping system. If no purge at all were used on the weld interior during the weld, the resulting weld area would be black and crusty from oxidation. This condition is called "sugared" as it resembles burnt carbonized sugar. If a purge is used, but the duration is not sufficient to replace the atmosphere with highly purified argon, or if the argon is contaminated with atmospheric oxygen or moisture, a weld with varying amounts of blue, gray, or brownish discoloration will result. This discoloration is referred to as "heat tint". Heat tint is undesirable and has been associated with an increased rate of corrosion. There is also the fear that the products of oxidation, especially of the type which can easily be wiped off, will result in contamination of the gases that are transported through the piping system. Achieving a weld interior with no sign of discoloration resulting from oxidation requires special care. For this installation, special cryogenic dewars of liquid argon certified for UHP applications to be 99.999% pure were used for purging the weld head and interior of the tubing during welding.
Plus, you can get any element to drop its bind with oxygen atoms, its not rocket science. just electropolish, or just ------- grind off some metal and throw a small peice of stainless in and weld it right.
Peoples manifolds fell apart because josh was welding ---- up in a hurryfull drunk and ripped in his garage to catch up.
