E hoʻomaka kākou me ka ʻoiaʻiʻo:
Hoʻohana maʻamau ʻia nā paipu kila kila Austenitic i nā ʻano kaiapuni corrosive. Eia naʻe, inā e akahele ʻoe, e ʻike ʻoe i loko o nā palapala hoʻolālā o kekahi mau ʻāpana, ʻoiai ka lōʻihi o DN≤40, ua hoʻohana maoli ʻia nā ʻano mea āpau. I loko o nā palapala hoʻolālā o nā ʻāpana ʻē aʻe, nā paipu kila kila, ʻaʻohe mea liʻiliʻi o ka caliber, hoʻohana pū lākou i nā mea hoʻohui paipu i hoʻopaʻa ʻia ma mua o nā mea paipu.
E like me ka ʻōlelo ʻana: i mea e hōʻoia ai i ka maikaʻi wili o nā paipu liʻiliʻi liʻiliʻi a pale i ke komo ʻana o ka welding i ka wā wili nui o kēia manawa, hoʻohana pinepine ʻia ka pilina ma kahi o ka pilina wili. No laila, no ke aha e lawe ʻole ai nā ʻāpana ʻē aʻe o nā paipu liʻiliʻi liʻiliʻi i nā ʻāpana intubation? Pili kēia i ka pilikia: ʻino ʻino.
E kamaʻilio kākou e pili ana i ke ʻano o ka crevice corrosion?
Ke loaʻa kahi āpau (maʻamau 0.025-0.1mm) ma luna o ka ʻili o nā mea metala ma muli o nā kino haole a i ʻole nā ​​kumu kumu, paʻakikī ke neʻe ʻana i ka mea corrosive i loko o ke āpau, kahi e alakaʻi ai i ka corrosion metala, i kapa ʻia ʻo gap corrosion. Lilo pinepine ka ʻino ʻino i mea e hoʻoulu ai i nā mea ʻino ʻē aʻe (e like me ka pitting corrosion, stress corrosion), no laila ke hoʻoikaika nei ka papahana e pale i ka hiki ʻana mai o ka corrosion crevice. Pono e pale ʻia ka noho ʻana o nā māwae i ka hoʻolālā ʻana i ka hoʻolālā pipeline no ka mea maʻalahi i ka pohā.
Ke kila kila 304 flange
ʻO ia no ka mea aia kahi āpau i loko o ke kumu pili, no laila kekahi mau ʻāpana i mea e pale aku ai i ka corrosion āpau, no ka noho ʻana o ka corrosion o nā paipu kila kila, ʻo ka pipeline liʻiliʻi liʻiliʻi e hoʻohana pinepine i ka pilina kuʻi, hoʻomalu kaʻina hana e hōʻoia i ka maikaʻi, pale aku. ka hoʻohana ʻana i ka intubation.
ʻO 304 he kila kuhili honua, hoʻohana nui ʻia ia i ka hana ʻana i nā mea hana a me nā ʻāpana e koi ana i ka hana holoʻokoʻa maikaʻi (ke kūpaʻa corrosion a me ka formability).
ʻO ka 304 stainless steel kahi hōʻailona o ke kila kila i hana ʻia e like me nā kūlana ASTM ma ʻAmelika Hui Pū ʻIa. Ua like ka 304 me ke kila kila 0Cr19Ni9 (0Cr18Ni9) o Kina. Aia ka 304 i ka 19% chromium a me 9% nickel.
ʻO 304 kahi kila kuhiliʻole i hoʻohana nui ʻia, kila pale wela. Hoʻohana ʻia i nā lako hana meaʻai, nā lako kemika xitong, ka ikehu nuklea, etc.
304 wiliwili wiliwili kila kilahe chromium i hoʻohana nui ʻia - nickel stainless steel, me ka pale ʻana i ka corrosion maikaʻi, ke kūpaʻa wela, ka ikaika haʻahaʻa haʻahaʻa a me nā waiwai mechanical. ʻO ke kūpaʻa ʻana o ka corrosion i ka lewa, inā he lewa ʻoihana a i ʻole kahi wahi haumia nui, pono e hoʻomaʻemaʻe ʻia i ka manawa e pale ai i ka corrosion. He kūpono no ka hana ʻana i ka meaʻai, mālama a me ka lawe ʻana. He maikaʻi ka machinability a me ka weldability. ʻO ka mea hoʻololi wela pā, nā bellows, nā waiwai o ka hale, nā mea kūkulu hale, nā kemika, ka ʻoihana meaʻai, etc.