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  1. #1
    Join Date
    Oct 2005
    Location
    Gastonia NC
    Posts
    3

    Default Welding questions

    I have been wanting to learn a little about different symbols on blueprints pertaining to welding. The part I am questioning now are the little triangles, what are they for, some empty, some colored in, and sometimes they are back to back with a little colored in triangle ahead of them. If there is a site that you know of or a good book you know the title of, I would appreciate it if you could share that info.

    Also I have heard that there is a little formula on finding a good starting point for the current. Is there such a formula and what is it? Say if I was going from a 7014 rod down to a 6013, how would I know a good spot to start the heat.

    One more thing is there any site or list that has good info on welding rods, like what they are good for, and reccomended applications, ect. For example where I work, they use 7014 1/8 rods to do all their 1/4-1/2 hor and vert welds, where in the past all i have ever seen used is 7018's.

    Any info given would be greatly appreciated,

    thanks,
    Otis Lentz

  2. #2
    Join Date
    Sep 2005
    Location
    Vernon Ct
    Posts
    117

    Default

    I'm going to attemp to post a pfd on weld symbols. If it doesn't work I can email it. It's to big to post. Email me if you want.

    Anyone know how to shrink it?

    Mike

  3. #3
    Join Date
    Oct 2005
    Location
    Gastonia NC
    Posts
    3

    Default

    email it to me and i will shrink it and post it for others. thanks

  4. #4
    Join Date
    Aug 2002
    Location
    Appleton, WI
    Posts
    207

    Default

    Miller does have an article "Deciphering Weld Symbols" in the Education section that may be of help. Here is a direct link...

    http://www.millerwelds.com/education...rticles47.html

  5. #5
    Join Date
    Aug 2002
    Location
    Appleton, WI
    Posts
    207

    Default

    You may also find the "Weld Parameter Calculators" helpful:

    http://millerwelds.com/education/calculators/

    (there is one for Stick, TIG, and MIG)

  6. #6
    Join Date
    Sep 2005
    Posts
    563

    Default

    Otis 1,
    One method to use to set your welding current is to use the decimal equivalent for the rod diameter you will be using.Example for an 1/8" electrode you would use 125amps which is the decimal for 1/8".This is only a starting point and is generaly near the middle range of current that a rod will run in.Metal thickness and position and joint design will need to be considered for final weld current settings.

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