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Rifles, Reloading, Optics, Equipment
Reloading
Salt Bath Annealing
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<blockquote data-quote="WildRose" data-source="post: 2447759" data-attributes="member: 30902"><p>The problem with that theory is that Zinc melts at just 420c, less than half the melting point of copper thus if we heat the brass to over 420c for any significant amount of time we risk cooking it off and having nothing left but copper and thus an unusable case.</p><p></p><p>So the key is heating the brass to probably no higher than 450c all the way through evenly so as to get the most effect.</p><p></p><p>I know for a fact that i've ruined brass in the past with the, "if some (red) is good, more is better theory" using a torch.</p><p></p><p>The key to making the salt bath work seems to me then is careful control of temperature not to exceed 450c, and figuring out the amount of time necessary to heat it up all the way through evenly without cooking off the zinc or otherwise damaging the brass.</p><p></p><p>If the pot is heated to 500-550c then it should be a fairly simple matter of figuring out just where that time constraint then is met.</p><p></p><p>From what I've gathered on the subject recently it seems as though we get maximum benefit by annealing our brass every 3-4 loadings IF we get it properly annealed each time so I'd really like to figure out exactly when that point is reached.</p></blockquote><p></p>
[QUOTE="WildRose, post: 2447759, member: 30902"] The problem with that theory is that Zinc melts at just 420c, less than half the melting point of copper thus if we heat the brass to over 420c for any significant amount of time we risk cooking it off and having nothing left but copper and thus an unusable case. So the key is heating the brass to probably no higher than 450c all the way through evenly so as to get the most effect. I know for a fact that i've ruined brass in the past with the, "if some (red) is good, more is better theory" using a torch. The key to making the salt bath work seems to me then is careful control of temperature not to exceed 450c, and figuring out the amount of time necessary to heat it up all the way through evenly without cooking off the zinc or otherwise damaging the brass. If the pot is heated to 500-550c then it should be a fairly simple matter of figuring out just where that time constraint then is met. From what I've gathered on the subject recently it seems as though we get maximum benefit by annealing our brass every 3-4 loadings IF we get it properly annealed each time so I'd really like to figure out exactly when that point is reached. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Salt Bath Annealing
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