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Rifles, Reloading, Optics, Equipment
Reloading
Annealing with lead - process?
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<blockquote data-quote="Mikecr" data-source="post: 403790" data-attributes="member: 1521"><p>My basis for--->"Successful use with Mobil1 guarantees the correct temperature range"?</p><p></p><p>I mentioned here & there that lead melts at high enough temperature, and going too high would cause the oil barrier to burn away, ruining cases as the lead brazes to them(an obvious problem). </p><p>And 'too high' looked to me to be near but higher than 750deg. That's just a little too hot even for synthetic oil.</p><p>There is not going to be a set timing formula because of all the variance in lead/lead amount/pots/cases/ventilation, etc.. </p><p>But does that matter?</p><p></p><p>If you dip very quickly, let's say in/out in 2sec, the brass might not take in full temperature. </p><p>The lead would likely solidify around the case, and might even braze to it because the oil barrier would shear at such a rate.</p><p>Pretty obvious failure..</p><p></p><p>If you dip extremely slow, let's say in/out in 1min, the brass would take in full temperature.</p><p>As long as your web/casehead are still below 450deg, all is fine. </p><p>But If your lead is hot enough, let's say 650deg, the oil would burn off before 1min, and your case would get alot heavier!</p><p>Again, pretty obvious failure..</p><p></p><p>There is no need to dip that long though, and if your oil is burning off in half that time, the lead's too hot.</p><p>If you go in/out within 30sec without lead sticking, then you got both the timing and temp needed.</p><p>But this is based on Mobil1 as a contaminant, preventing brazing -within it's limits.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 403790, member: 1521"] My basis for--->"Successful use with Mobil1 guarantees the correct temperature range"? I mentioned here & there that lead melts at high enough temperature, and going too high would cause the oil barrier to burn away, ruining cases as the lead brazes to them(an obvious problem). And 'too high' looked to me to be near but higher than 750deg. That's just a little too hot even for synthetic oil. There is not going to be a set timing formula because of all the variance in lead/lead amount/pots/cases/ventilation, etc.. But does that matter? If you dip very quickly, let's say in/out in 2sec, the brass might not take in full temperature. The lead would likely solidify around the case, and might even braze to it because the oil barrier would shear at such a rate. Pretty obvious failure.. If you dip extremely slow, let's say in/out in 1min, the brass would take in full temperature. As long as your web/casehead are still below 450deg, all is fine. But If your lead is hot enough, let's say 650deg, the oil would burn off before 1min, and your case would get alot heavier! Again, pretty obvious failure.. There is no need to dip that long though, and if your oil is burning off in half that time, the lead's too hot. If you go in/out within 30sec without lead sticking, then you got both the timing and temp needed. But this is based on Mobil1 as a contaminant, preventing brazing -within it's limits. [/QUOTE]
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Annealing with lead - process?
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