No ka mea, 316L mānoanoa-walled stainless steel paipu he corrosion-resistant, hopena-kū'ē, a kiʻekiʻe-mehana kū'ē, ua hoʻohana pinepine ia i ka lāʻau lapaʻau, kemika 'oihana, meaʻai, 'oihana māmā, kemika mīkini, 'oihana pipelines, a me ka mechanical'āpana. ʻOiaʻiʻo, kūpono hoʻi nā paipu kila mānoanoa no ka hana ʻana a me ka hana ʻana i nā paipu hoʻopau a me nā paipu kumu like ʻole. Eia naʻe, ʻino nā paipu kila mānoanoa ma hope o ka hoʻohana ʻana. No laila, he aha kaʻu e hana ai inā ua ʻino ʻia nā paipu kila kila 316L me ka pā mānoanoa?

Ua ʻike mākou i ka wā e ʻānai ʻia ai nā paipu kila kila mānoanoa o 316L e nā thermocouple, ua luku ʻia ka mea hoʻoneʻe anodic a mālama ʻia ka electrode maikaʻi ʻole. Inā mākou e ho'āʻo e mālama i ka paipu kila mānoanoa me ke kila kila ma ke ʻano he electrode maikaʻi ʻole mai ka hoʻomaka ʻana a i ka hopena, ʻaʻole hiki ke ʻino ʻia ka paipu kila. Ua kapa ʻia kēia ʻano anti-corrosion i ka pale cathodic pipeline. He ala hoʻi kēia e alakaʻi ai. ʻAʻole ia e hoʻohana wale i nā mea metala hiki ke hoʻoneʻe ʻia e like me nā kiʻiʻoniʻoni pale akā hoʻopau pū kekahi i nā mea metala hoʻoneʻe a mālama i nā ʻāpana metala. Hiki ke hana ʻia ka noiʻi ʻepekema hou me ka luku ʻole i ka anodic oxidation. No laila, hiki ke hoʻokaʻawale ʻia ke ʻano pale cathodic i ke ʻano kiʻiʻoniʻoni pale a me ke ʻano hana pale uila.

Me ka mea hoʻoikaika ikaika e like me ke kiʻi pale, e hoʻokomo i loko o ka ili o ka paipu kila kila 316l pale, a i ʻole e hoʻopili i ka metala pale me kahi uea, i lilo ka kiʻiʻoniʻoni pale a me ka metala pale i ʻelua ʻaoʻao o ka hopena galvanic cell. No ka mea he metala ikaika ke kiʻi pale, he hopena anodic oxidation kona i loko o ka pākaukau, hoʻoneʻe ʻia a hōʻino ʻia e ka ea corrosive, a ʻo ka mea pale pale ka cathode. Hoʻopau a nāwaliwali paha ka pākaukau liʻiliʻi ma ka hana cathode, a laila pale i nā ʻāpana metala. I ka wā e ʻeleʻele ai ke kiʻi pale, hiki ke hoʻololi ʻia e kahi kiʻi pale ʻē aʻe.

No laila, ʻo kēia ʻano anti-corrosion he ala pale kaʻa nalowale, ʻike ʻia hoʻi he ala pale cathodic. No ka laʻana, aia nā poloka zinc i loko o nā paila mahu, a hoʻokomo pinepine ʻia ka zinc a puni nā propellers o nā moku. ʻOi aku ka ikaika o Zinc ma mua o ka hao, no laila e ʻino mālie ka zinc a pale i ka umu a me nā propellers. I ka wā o ke kaʻina hana electrolysis, ʻaʻole maʻalahi ka pōʻino o ka electrode i pili i ka pole maikaʻi ʻole o ka mana. I kēia electrode, ʻaʻole pono ka electron, no laila ʻaʻole hiki i ka paia maikaʻi ʻole 316L ka mānoanoa o ka pā stainless steel paipu ponoʻī ʻaʻole hiki ke nalowale i nā electrons a lilo i mau ion maikaʻi.

I nā huaʻōlelo ʻē aʻe, ʻaʻole maʻalahi ka pōʻino o ka electrode maikaʻi ʻole. E like me kēia kumu kumu, hiki iā mākou ke hoʻohana i waho o kēia manawa e hoʻopili i ka paipu kila mānoanoa me ka pilina maikaʻi ʻole o ka mana hoʻololi e like me ka pilina maikaʻi ʻole, hoʻonohonoho i ka mana kōkua a me ka pou maikaʻi o ka lako mana hoʻololi. ka pili anodic oxidation, a laila mālama i nā mea hana ʻino. Hiki ke anodizing kekahi mau paipu wai ʻino, nā ala kaʻaahi kahiko, a me nā mea ʻē aʻe, e ʻino mālie ana ma lalo o nā kūlana haʻahaʻa. Ua like kēia ʻano me ke ʻano kiʻiʻoniʻoni pale.