Official Answer
Answer
A cikin ASTM B850, manyan zoben ƙarfe na carbon (taurin> 40 HRC) dole ne a jujjuya yanayin yin burodi a cikin sa'o'i 1 zuwa 4 na lantarki. Matsakaicin ƙa'idar ita ce mafi ƙarancin sa'o'i 22 a 190-220 digiri Celsius. Jinkirin yin burodi yana da mahimmanci; idan an ba da izinin hydrogen don yaduwa zuwa iyakokin hatsi kuma ya fara ƙananan ƙwayoyin cuta a ƙarƙashin damuwa na ciki, lalacewar ba za ta iya canzawa ba. Don madaidaicin maɗauran sararin samaniya da zobe, injiniyoyi da yawa yanzu sun ƙaura daga yin amfani da wutar lantarki zuwa injin galvanizing ko bakin karfe don kawar da wannan yanayin gazawar gaba ɗaya.
