Official Answer
Answer
Maganin Cryogenic (sanyi zuwa $-300 ^{\circ}F$ ta amfani da nitrogen mai ruwa) wani lokaci ana amfani da shi don tabbatar da cikakkiyar jujjuyawar austenite da aka riƙe zuwa martensite a cikin manyan ƙarfe na carbon. Riƙe austenite ba shi da kwanciyar hankali kuma yana iya canzawa akan lokaci a zafin jiki, yana haifar da ƙaramin ƙarar ƙara. Don madaidaicin zoben karkace a cikin ingantaccen tsarin gani ko kewayawa, wannan juzu'i na iya zama matsala. Aikin Cryogenic yana tabbatar da tsayayyen microstructure, yana haɓaka taurin da kuma tabbatar da cewa $D_s $ diamita kyauta ta zobe ya kasance akai-akai akan rayuwar kayan aiki.
