Yadda za a zabar zafin bugun bugun injin wutar lantarki?

Lokacin narke gami, idan ya ƙunshi molybdenum ko tungsten gami, zafin zafin jiki dole ne a sarrafa shi a 1650-1700 ℃; domin manganese, da tapping zafin jiki dole ne a sarrafa a 1600-1620 ℃. Baya ga tabbatar da narkakken gawa, lokacin narkar da ingot ko wasu kayan da aka dawo da su, ana tantance zafin zafin da aka yi a cikin narkakken ƙarfe a cikin tanderun.