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what is the process for welding the flange section of railway line to a steel beam
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george
Nov 14, 2012, 11:18:02 PM11/14/12
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what is the process for welding the base (flange) of railway line to a steel
beam. the two items must be seal welded to prevent corrosion.
do we use inner shield, MIG or low hydrogen electrodes, with or without
pre-heat, current ambient temperature is 27c.
we have had problems with the rail flange cracking along side the weld.
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beam. the two items must be seal welded to prevent corrosion.
do we use inner shield, MIG or low hydrogen electrodes, with or without
pre-heat, current ambient temperature is 27c.
we have had problems with the rail flange cracking along side the weld.
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| Web, RSS and Social Media Interface to |
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Richard Smith
Nov 15, 2012, 5:24:08 AM11/15/12
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Welding rods would cost, but no preheat with its equipment/costs(?)
As this is seal-weld (really and truly? Little / no strength
required?) low yield strength of 309 irrelevant?
Ernie Leimkuhler
Nov 15, 2012, 11:01:47 AM11/15/12
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In article <1bb74$50a46cfa$43de0cc0$27...@news.flashnewsgroups.com>,
Normally you would preheat the area with weedburners to at least 50
degF, preferably 100 degF. Use Tempilstiks to measure your temperature.
Then slow cool with welding blankets.
7018 should work, but rails are manganese steel, so I would opt for a
8018 rod.
degF, preferably 100 degF. Use Tempilstiks to measure your temperature.
Then slow cool with welding blankets.
7018 should work, but rails are manganese steel, so I would opt for a
8018 rod.
Ernie Leimkuhler
Nov 15, 2012, 11:03:59 AM11/15/12
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In article <m1ehjvc...@invalid.com>, Richard Smith
309 would not be my choice for a high cyclic load joint like a railroad
rail.
It is tough, but will develop stress fractures faster than a HSLA rod
like 8018.
There should be a variant of 8018 tailored to manganese steels.
Lincoln makes a bunch of 8018 variants for different HSLA steels.
rail.
It is tough, but will develop stress fractures faster than a HSLA rod
like 8018.
There should be a variant of 8018 tailored to manganese steels.
Lincoln makes a bunch of 8018 variants for different HSLA steels.
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