It should be possible to do if you have access to a TIG set. Thats a
tungsten tipped arc welding hand piece with argon shielding gas. We
weld stainless frequently with our modern inverter set not in
jewellery making tho.
Ive used my old as in 1960’s tig set to make stainless steel
jewellery. works fine.
But to melt and pour in a mould ? not a chance.
You would need at least 200 amps DC to melt enough on a ceramic
block to get a useable piece of the remelted blades.