Page 1 of 5 123 ... LastLast
Results 1 to 10 of 45

Thread: Uses of magnesium question

  1. #1
    Join Date
    Nov 2002
    Posts
    1,669

    Post Uses of magnesium question

    I'm dumping a waterheater so I thought I'd pull out the anode. As far as I know the anode is made of magnesium. I suppose I'll know if the shavings burn giving off a bright light. I also know that the powder and fine shavings are used in flashbulbs and other devices like that.

    What properties are of interest to a machinist? What is the metal good for other than its chemical properties?

    Thanks,

    Spence

  2. #2
    Join Date
    Oct 2004
    Posts
    18

    Post

    Light, even lighter than Aluminum

    John

  3. #3
    Join Date
    Jul 2003
    Location
    Vici, Ok.
    Posts
    1,131

    Post

    Spence I don't know about water heaters, but I worked as a corrosion tech for a while in the oil patch, and we used mostly zinc anodes for liquid contact. The only time we used mag anodes was in earth contact. James

  4. #4
    Join Date
    Jan 2003
    Location
    Deep in the Heart of Texas!
    Posts
    5,576

    Post

    LOL... Funny now but not at the time. I set one of my wood benches on fire power sanding Aluminum/Magnesium alloy. I still have about 30lbs. of it. What the heck is it good for. Corrodes faster than aluminum.

  5. #5
    Join Date
    Nov 2002
    Posts
    1,669

    Post

    Well as you might expect the rod was heavily pitted and corroded. Still it would make a 4x4" cube. Can I melt it and treat it just as I would aluminum? Is there a hazard of it igniting in the crucible?

  6. #6
    Join Date
    Sep 2004
    Posts
    137

    Post

    As a retired chemist, I strongly suggest that you NOT try to melt it. If it does catch fire, magnesium burns so hot it will strip the necessary oxygen from carbon dioxide ( one form of "fire extinguisher") and under some circumstances even water!! Also it will be so bright that if you look at it, you will not be able to see what you are doing. remember those flash bulbs? Think of a continuous light that bright.

    Bob

  7. #7

    Post

    Magnesium is useful for igniting the Thermite made from the left over scrap aluminum and rust.

    Don Clement
    Running Springs, California

  8. #8
    Join Date
    Nov 2002
    Location
    Kenosha, not the pass the other one
    Posts
    2,416

    Post

    We used to use Magnesium safety blocks in presses when work had to be done on the dies while in the press. Any time a set of blocks had to modified some idiot always had to collect the swarf from the saw. Although some of the guys did save it for using as firestarters for hunting trips out west
    The optimist says the glass is half full, the pessimist says it's half empty. The paranoid in me says somebody put a hole in it.

    Remember pessimists are at heart opptomists. They know things can and will get worse.

  9. #9

    Post

    Actually, magnesium doesn't work that well as a fire starter. Burns very hot, but goes out too quickly. Pieces of an old bicycle inner tube work best as fire starter.

    Don Clement
    Running Springs, California

  10. #10
    Join Date
    Nov 2002
    Posts
    1,669

    Post

    Is there anyone else that thinks that melting the magnesium will be hazardous? I was thinking of using the same methods and cast iron crucible as I use on the aluminum.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •