Official Answer
Answer
'Blueing' magani ne mai ƙarancin zafin jiki ($260-370 ^\circ C$) wanda ke samar da siriri, magnetite mai kariya ($ Fe_3O_4$) akan karfen carbon. Bayan kyawawan sha'awar, wannan tsari yana aiki azaman sauƙi mai sauƙi kuma yana ba da tushe ga masu hana lalatawar mai-tsoma. Don zoben karkace, waɗanda aka raunata daga faɗuwar waya, blueing yana taimakawa wajen daidaita diamita kuma yana hana 'springback' wanda zai iya faruwa idan kayan aikin sanyi ne kawai. Yana da madaidaicin farashi mai tsada ga mafi tsadar sutura don injunan masana'antu na cikin gida.
