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Gold Prospecting
Alluvial Gold Prospecting
Dollying gold from qaurtz.
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<blockquote data-quote="HeadsUp" data-source="post: 101211" data-attributes="member: 414"><p>regarding the air chisel hammer you made , i advise guys to try and preheat the end of the chisel if they stick or mig weld it</p><p></p><p>the chisel is hardened steel and if you weld without preheat they snap off within 5 minutes from embrittlement in the heat affected zone</p><p></p><p>the way you did it with TIG is great because you get some preheat in there before you lay down any filler rod and the heating is a bit slower.</p><p></p><p>an even better way to do them however is to soften the chisel end by annealing first before welding</p><p></p><p>annealing steel requires a different process to suit the material type , i will try and get a metallurgy spec for chisels and provide the procedure for annealing , its opposite what you do to anneal copper</p></blockquote><p></p>
[QUOTE="HeadsUp, post: 101211, member: 414"] regarding the air chisel hammer you made , i advise guys to try and preheat the end of the chisel if they stick or mig weld it the chisel is hardened steel and if you weld without preheat they snap off within 5 minutes from embrittlement in the heat affected zone the way you did it with TIG is great because you get some preheat in there before you lay down any filler rod and the heating is a bit slower. an even better way to do them however is to soften the chisel end by annealing first before welding annealing steel requires a different process to suit the material type , i will try and get a metallurgy spec for chisels and provide the procedure for annealing , its opposite what you do to anneal copper [/QUOTE]
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Gold Prospecting
Alluvial Gold Prospecting
Dollying gold from qaurtz.
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