Ma muli o ka hana ʻana o nā ʻāpana mānoanoa ma luna o ka ʻili, nā ʻāpana paʻakikī a paʻakikī o ka unahi, ʻo ia mau ʻāpana pickling descaling ʻano paʻakikī. ʻO ia ka wehe ʻana i ka unahi ʻokesaʻi wehe e like me ke kaʻina pickling o ka wehe ʻana i ka lehu i kau ʻia.

1, unahi ʻole:
2, Pickling hana: ma hope o loose unahiʻole, pili pinepine i nā ʻāpana o ka ʻili papa o ka hina hina, e kau lehu ma hope o ka wehe 'ana i ka oxide passivation.
3, Ka wehe 'ana i ka lehu e kau ana i ka hana kaʻina hana: ʻO nā ʻāpana ma hope o ka pickling passivation kaʻina hana maikaʻi ʻole corrosion i ka lewa, e like me ka ʻike ʻana i ka ea, nā ʻāpana o ka ʻili. No ka hoʻonui ʻana i ke kūpaʻa corrosion o nā ʻāpana, pono nā ʻāpana e hoʻohua i kahi ākea, maikaʻi ke kūpaʻa corrosion o ke kiʻi passive, i mea e hoʻokō ai i ke kumu o ka pale ʻana i ka corrosion. He maikaʻi a maikaʻi ʻole paha ke kiʻi passivation e pili pono i ka maikaʻi o ke ola a me nā ʻāpana hiʻohiʻona, nā mea e pili ana i ka maikaʻi o ka haku mele passivation a me ka maikaʻi o ka mea nui o ka hopena passivation.