1.Lokacin da yashi ayukan iska mai ƙarfi ko manual inji derusting da ake amfani, da karfe sikelin a saman nababban diamita karfe bututu yana fuskantar iska kai tsaye saboda bawon sikelin oxide daga bututun ƙarfe mai girman diamita.Idan ba a yi fenti a cikin lokaci ba, fuskar babban bututun ƙarfe na ƙarfe zai iya sake yin tsatsa, wanda ke shafar mannewar fim ɗin fenti.Tun da fenti abu ne mai ɗaukar lokaci, bayanan ƙirƙira yana yiwuwa ya ƙare kuma ya zama mara aiki.Sabili da haka, ana sake nazarin manyan alamun fenti kafin amfani da su, kuma sakamakon ya dace da ma'auni.

2.Derusting: Wannan muhimmin tsari ne kafin rufe manyan bututun ƙarfe na ƙarfe da aka gyara, kuma shine mabuɗin manyan bututun ƙarfe.Tsatsa cire iya inganta mannewa anti-tsatsa fenti, game da shi mika rayuwar sabis na manyan diamita karfe bututu.

3.The surface na babban diamita karfe bututu sarrafa ta sandblasting, harbi ayukan iska mai ƙarfi ko pickling tsari ne in mun gwada da tsabta, da kuma oxide sikelin da tsatsa ne in mun gwada da tsabta, wanda inganta shafi mannewa.Lokacin da wurin shigarwa ya kasance ba tare da wani sharadi ba ta hanyar fashewar yashi da harbin iska, ana iya amfani da injina na hannu don cire tsatsa, amma matakin cire tsatsa ya kai.