Welding on a tire rim

[chevytaHOE5674]

I too have welded around the valve stem and other places on a rim. I pull the valve core out and leave it out until the tire and wheel has fully cooled.

[Tom]

The video is accompanied by a lecture.  One of the examples given in the lecture is about one person killed and a helper injured when the dismounted tire exploded.  It had the valve core removed and was pulled back from the rim but still hanging in the rim.  The heat expanded the air so fast that the tire reseated itself and the core-less valve couldn't vacate the air fast enough.  it exploded.

[rbarshaw]

Here's a good argument for tires inflated with nitrogen, no oxygen, no fire. In hind site it's obvious, heat and compressed air and flamable material in a confined space equals an explosion. I welded on the rims for my first mill with 50# in them and welded for 24" around a plate to mount a shaft to, made several passes, suprised i'm still alive.

[Tom]

according to that article, nitrogen wouldn't help.  The heat starts a chemical reaction in the material of the tire.  The tire generates its own heat.  Nothing is burning, on the other hand, it is heating without burning. 
The explosion is caused by the containment of any gas in the tire, as I understand it.

[edwardj_]

hmmmm....   not sure i am happy that i watched this.  I work in a motorcycle shop that also deals with argos.  I have had a few instances where i have had to use a torch or die grinder/cut off wheel on the lug nuts.  I guess I will have to pay more attention next time and only use a grinder and stop and cool it fairly often.  Its surprising how many things we do in life only to find out how lucky we were well after we got away with it...

As for the cans of beans...   if you insist on heating them up without opening the top of the can there is a "safe" (notice i put quotes to point out some danger still...) way to do it.  I have done it many times and have never hurt myself or others with any flying debris.  Put a dent in the can...  smack it hard on the side and then throw it in the fire, on top of the boiler, exhaust or whatever.  when the dent pops pull it off and open it.  if ya wait too much longer there is a mess everywhere.

[footer]

hmmmm....   not sure i am happy that i watched this.  I work in a motorcycle shop that also deals with argos.  I have had a few instances where i have had to use a torch or die grinder/cut off wheel on the lug nuts.  I guess I will have to pay more attention next time and only use a grinder and stop and cool it fairly often.  Its surprising how many things we do in life only to find out how lucky we were well after we got away with it...

As for the cans of beans...   if you insist on heating them up without opening the top of the can there is a "safe" (notice i put quotes to point out some danger still...) way to do it.  I have done it many times and have never hurt myself or others with any flying debris.  Put a dent in the can...  smack it hard on the side and then throw it in the fire, on top of the boiler, exhaust or whatever.  when the dent pops pull it off and open it.  if ya wait too much longer there is a mess everywhere.

I work for a major food company that makes canned beans, and other products, and I know for a fact that the beans are cooked in the sealed can, so I know that they can be reheted in the can. That is, as long as the temperature doesnt exceed the temperature that the factory "cooks" them at... ...