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Welding Rail 1
- Thread starter dik
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1
- #2
Are you talking about Thermite welding of the rail?
This is the only method I've seen used on main line. I've only seen preheat on some of the weld jobs. I've never seen any PWHT.
Welding on the RR
Some very good information
The source of that information. Also they have a lot of technical papers that you have to request.
This is the only method I've seen used on main line. I've only seen preheat on some of the weld jobs. I've never seen any PWHT.
Welding on the RR
Some very good information
The source of that information. Also they have a lot of technical papers that you have to request.
- Thread starter
- #3
There is so much heat input in a thermite weld that PWHT is not required. We SMAW repair these rails (weld build up)all the time without PWHT using 800 F to 1000 F preheat. Automated, continuous arc welding methods have been developed for these rails without PWHT as well. Again the preheat and high heat inputs preclude the neccesity for PWHT.
Can you comeback with exactly what are you are trying to do with a welding process for rail?
You posted that the CE is too high for welding, this is not necessarily true for rails as about 99% of rails can be welded. As mentioned above by stanweld the preheat is the secret.
If joining is your plan here is bit more information.
The first two URLs are for general information, procedures, and consumables for joining rails. The is a bit of information on electric welding on the GoldSchmidt site.
These two companies listed are joined at the hip.
This is a different company with a slightly different procedure. This paper from Railtech shows exactly how it's done.
Here is a procedure guide line for joining rails.
You posted that the CE is too high for welding, this is not necessarily true for rails as about 99% of rails can be welded. As mentioned above by stanweld the preheat is the secret.
If joining is your plan here is bit more information.
The first two URLs are for general information, procedures, and consumables for joining rails. The is a bit of information on electric welding on the GoldSchmidt site.
These two companies listed are joined at the hip.
This is a different company with a slightly different procedure. This paper from Railtech shows exactly how it's done.
Here is a procedure guide line for joining rails.
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