ʻO ke kukui nui o kahoʻokahi-girder bridge craneʻaʻole kūlike, e pili pono ana i ka hana ma hope. ʻO ka mua, e hana mākou i ka palahalaha o ka lāʻau ma mua o ka neʻe ʻana i ke kaʻina hana aʻe. A laila ʻo ka sandblasting a me ka manawa plating e hana i ka huahana keʻokeʻo a me ka hala ʻole. Eia nō naʻe, ʻokoʻa nā hiʻohiʻona hoʻolālā o ko lākou mau kaola nui. ʻ
Pono mākou e hoʻomaopopo mua i nā manaʻo ʻelua e pili ana i ka huahana:
1. He aha nā mea hana a me nā ʻano papa e pono ai e hana i ka lāʻau nui o ka mīkini alahaka (nā papa, nā ʻōwili, nā ʻāpana ʻano kūikawā, nā lula)?
2. E noʻonoʻo ana i ka nui o ka lāʻau nui a me ka ʻili o ka crane-girder crane (e pili ana i ka huahana, hiki ke koho ʻia nā kaʻina hana pālahalaha like ʻole e hoʻopau i ke kumukūʻai a me ka hoʻokele operability), he aha ke ʻano o ka pae pae a me nā koi hoʻohana e hoʻokō ʻia no ke kukuna nui?
I kēia manawa, ʻelua mau ala e hoʻoponopono ai i ka palahalaha o ka pahu nui o ka crane:
1. ʻO ka hoʻohana ʻana i ka lāʻau lapaʻau ʻoihana e hoʻoneʻe i nā ʻāpana convex i poni ʻia ma o ka ʻoki ʻana a me ka deformation plastic o ka ʻili o ka mea e loaʻa ai kahi ʻano polishing maʻemaʻe, a hoʻohana maʻamau i nā pōhaku wili, wai polishing, etc.
2. Ka poni kemika. ʻO ka polishing kemika ka hana ʻana i nā ʻāpana convex microscopic o ka convexity kūloko o ka ʻikepili e hoʻoheheʻe mua ʻia i loko o ke ʻano kemika, a laila e loaʻa ai kahi ʻili laulima. ʻO ka pōmaikaʻi nui o kēia ʻano hana ʻo ia ka hiki ke hoʻoliʻiliʻi ʻia nā mea hana paʻakikī me ka ʻole o nā mea paʻakikī, a hiki ke hoʻonani ʻia nā papa kila he nui i ka manawa like. ʻO ka pilikia me ka polishing kemikal ka hoʻohana ʻana i ka wai polishing a me nā mea huahana. ʻO ka roughness o ka ʻili i loaʻa e ka polishing kemika maʻamau he 10μm.
