Official Answer
Answer
Black Oxide (MIL-DTL-13924) wani shafi ne na juyawa wanda ke ba da bayyanar duhu da ƙaramin juriya na lalata, da farko an yi niyya don aikace-aikacen cikin gida ko kuma inda zoben za a nutsar a cikin mai. Zinc Phosphate (nauyi) yana ba da mafi kyawun kariyar lalata kuma yana aiki azaman ma'auni don mai. Don zoben karkace, dole ne murfin ya zama bakin ciki sosai don kada ya tsoma baki tare da ikon zoben na sassauƙa yayin shigarwa. Dole ne a sarrafa zoben ƙarfe na carbon (SAE 1070-1090) a hankali don guje wa ɓarnawar hydrogen idan waɗannan suturar sun ƙunshi matakin ɗaukar acid.
