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Found 2 results

  1. Compiled by Adam Ford COMPARISON BORAX followed by BORIC ACID FORMULA Na2B4O7·10H2O H3BO3 MOLAR MASS 381.37 g/mol 61.83 g/mol MELTING POINT 1,369°F (743°C) 339.6°F (170.9°C) BOILING POINT 2,867°F (1,575°C) 572°F (300°C) DENSITY 1.73 g/cm³ 1.44 g/cm³ SOLUBILITY Water Water IUPAC ID Sodium tetraborate decahydrate (so-dee-um tet-ra-bo-rate dec-a-hi-drate) Trihydroxidoboron, Boric acid (tri-hy-drox-ide-o-bo-ron) DIFFERENCES BORAX followed by BORIC ACID Differences FORMULA Na2B4O7·10H2O H3BO3 BORAX much more complex MOLAR MASS 381.37 g/mol 61.83 g/mol Difference 319.54 g/mol MELTING POINT 1,369°F (743°C) 339.6°F (170.9°C) Difference 1029.4°F (554.111°C) BOILING POINT 2,867°F (1,575°C) 572°F (300°C) Difference 2295°F (1257.222°C) DENSITY 1.73 g/cm³ 1.44 g/cm³ Difference 0.29 g/cm³ In the end, You will have to heat the metal a lot less to be able to get the metal fluxed with Boric acid. This is JUST A REFERANCE SHEET I am NOT ADVOCATING FOR ONE OR THE OTHER, THAT IS YOUR CHOICE This sheet may be used as you want. Redistribution is fine by me
  2. Hey guys, I'm trying to figure out where I went wrong with fire welding the other day. I'm using a coal forge first off. So I decided I was just going fire weld two pieces of scrap to learn how, but I failed miserably. Can't even figure out how I failed. My process was as follows: Started forge (duh, lol) Got fire pot nice and deep and fully glowing (Aprox. 7-9 inch heart)(Metal is of larger size) Picked two pieces, one 8" x 3" the other about 7" x 3" Heated (first time) to glowing, my normal working heat. Failed Realized I would need much more heat, heated to nearly burnt (Where it sparks) Still failed. Added forge borax (Actually called Cherry Heat http://www.centaurforge.com/Cherry-Heat-Welding-Compound-5-lb-can/productinfo/5CHERRY/) I cleaned the metal off with a wire brush first, then applied the powder, but I admit I had now idea how to use it still failed. Decided I needed help. Can anyone help me figure out where I went wrong, or give me a run down of how you do it?