Ihe mgbanaka ahụ bụ Quenching + iwe ọkụ. Nkemgbanaka adịgborojaa na-ekpo ọkụ na okpomọkụ kwesịrị ekwesị (850 ℃ na-ekpo ọkụ, okpomọkụ okpomọkụ 590 ℃) ma na-edebe ya ruo oge ụfọdụ, wee mikpuo ya na ọkara ka ọ dị jụụ ngwa ngwa.

50 c8 mgbanaka -Na-emenyụ ọkụ.