AluminiumBronze: Difference between revisions

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Line 32: Line 32:
* Al: 13 % : 281 g
* Al: 13 % : 281 g
* Cu : 83% : 1793 g
* Cu : 83% : 1793 g
== For 200 cm3 / xxx g ==


= Preparation protocol =
= Preparation protocol =

Revision as of 16:21, 2 June 2018

= Kinds of Copper alloys *

Composition

  • Fe: 3.5 - 5.5 %
  • Al : 12.5-13.5 %
  • Mn: 0-2 %
  • Cu : rest
  • Melting point
    • Liquidus - 1051 C
    • Solidus - 1047 C
  • Density : 7.2 g/cm3

Recipes

For 500 cm3 / 3600 g

  • Fe : 4% : 144 g
  • Al: 13 % : 468 g
  • Cu : 83% : 2988


For 400 cm3 / 2880 g

  • Fe : 4% : 115 g
  • Al: 13 % : 374 g
  • Cu : 83% : 2391 g

For 300 cm3 / 2160 g

  • Fe : 4% : 86 g
  • Al: 13 % : 281 g
  • Cu : 83% : 1793 g

For 200 cm3 / xxx g

Preparation protocol

  • This is not yet tested : treat as hypothesis
  • As we will be using the 500ml graphite crucible for the first time, preheat first to 200 - 300 C, make sure it is stable and dry


Order to actions

  1. Load the crucible
    1. Fe, in as fine as possible form in the crucible
    2. Al
    3. Borax
  2. Wait for it to melt. We expect Iron to dissolve in molten Al
    1. Stir, check for solid Fe
    2. Add Cu
    3. More borax if needed
  3. heat up to 1200 C, max the oven can do. We want to be well above melting temperature, so we have sufficient time to pour before it starts solidifying
  4. Pour in stailess steel cupcake forms, to form ingots small enough to fit in the crucible