Official Answer
Answer
'Oil Tempered' SAE 1070 carbon karfe ana sarrafa ta dumama zuwa austenitic kewayon, quenching a cikin mai, sa'an nan tempering zuwa ga taurin da ake so (yawanci HRC 45-52). Wannan tsari yana haifar da kyakkyawan tsari na martensite mai zafi, yana ba da kyakkyawan ma'auni na ƙarfin yawan amfanin ƙasa da ƙarfi. Don zoben riƙon karkace a cikin injuna masu nauyi, an fi son wannan kayan akan waya 'Cold Drawn' saboda yana da ƙananan matsi na ciki da kwanciyar hankali mafi kyau. Duk da haka, dole ne a kiyaye shi daga lalata ta hanyar shafan phosphate ko plating na zinc. Hakanan yana da mahimmanci a guje wa 'sake zafin rai' yayin kowane tsarin sutura na gaba don kiyaye ingancin tsarin zoben.
