- ʻO ke koho waiwai opaipu welapili pono i ko lākou ola lawelawe, ka pono o ka hoʻomehana ʻana, a me ka palekana, a pono e noʻonoʻo ʻia ma muli o nā kumu kumu e like me nā ʻano o ke ʻano hana, ka mahana, ke kaomi, a me ka corrosiveness.
1, ʻO nā kumu nui e pili ana i ke koho mea
Nā hiʻohiʻona o ke ʻano hana:
He ʻino paha ka mea waena (e like me ka waika-base solution, ka wai kai, ka wai ʻōpala kemika, a pēlā aku);
Inā loaʻa i ka medium nā mea haumia (e like me nā ʻāpana, sediment, a me nā mea ʻē aʻe, hiki ke hoʻopau ʻia);
ʻO ka meaʻai a i ʻole ka lāʻau lapaʻau (pono e hoʻokō i nā koi o ka maʻemaʻe a ʻaʻohe ua).
Mahana hana:
'Oko'a ka hana pale wela o nā mea like 'ole ma ka lumi wela (≤ 100 ℃), ka mahana wela (100-600 ℃), a me ka wela ki'eki'e (> 600 ℃).
kaomi hana:
Pumi haʻahaʻa (≤ 1MPa), kaomi maʻamau (1-10MPa), kaomi kiʻekiʻe (> 10MPa), pono e hoʻokō ka mea i nā koi ikaika mechanical ma lalo o ke kaomi pili.
2、 Nā mea maʻamau a me nā hiʻohiʻona pili
Ke kila kila (ʻoi loa i hoʻohana ʻia)
Hoʻokaʻawale ʻia i nā hiʻohiʻona e like me 304, 316, 310S, a me nā mea ʻē aʻe, ua hoʻonui ʻia ke kūpaʻa corrosion a me ke kūpaʻa wela kiʻekiʻe i ke kaʻina:
304 kila kila:kū'ē i ka corrosion maʻamau (e like me ka wai, ka ea, ka waikawa palupalu a me ka alkali), ke kumu kūʻai kūpono, kūpono no ka hoʻomehana ʻana i ka wai paila, ka wai ʻoihana maʻamau, ka ea paʻa, etc., ka mahana hana ≤ 600 ℃, kaomi ≤ 10MPa.
316 kila kila:Loaʻa i ka molybdenum element, me ka ʻoi aku ka maikaʻi o ka corrosion ma mua o 304, hiki ke kū i ke kai, nā haʻahaʻa paʻakai liʻiliʻi, dilute sulfuric acid, a me nā mea ʻē aʻe.
310S kila kila:ʻO ke kūpaʻa wela kiʻekiʻe (≤ 1200 ℃), ke kūpaʻa ikaika o ka oxidation, kūpono i nā hiʻohiʻona hoʻomehana e like me ke kiʻekiʻe-mehana flue gas a me ka paʻakai hoʻoheheʻe ʻia, akā haʻahaʻa haʻahaʻa haʻahaʻa i ka 316.
Ke kila kalapona
ʻO ke kumu kūʻai haʻahaʻa, ka ikaika mechanical kiʻekiʻe (hiki ke kū i ke kaomi> 20MPa), akā hiki i ka ʻāʻī (koi i ka pena anti rust a i ʻole ka pale galvanizing), kūpono wale no ka non corrosive, lumi wela/mehana wela (≤ 300 ℃) media, e like me ka ʻaila ʻenekini hoʻomehana a me nā kinoea ʻenehana maʻamau.
3、 Kaʻina koho a me nā kuhikuhi hihia
1. E wehewehe i nā pono kumu:
E hoʻoholo mua i ke ʻano (corrosiveness/cleanliness), ka mahana (ke wela lumi/ke wela kiʻekiʻe), ke kaomi (ke kaomi kiʻekiʻe/ke kaomi haʻahaʻa?), a laila hoʻohālikelike i nā waiwai waiwai.
2. Nā laʻana hiʻohiʻona maʻamau:
ʻO ka wai paipu wela/ka wai ʻoihana maʻamau: 304 kila kila (kūʻai kaulike a me ka pale ʻana i ka corrosion);
Hoʻomaʻamaʻa i ka wai kai/wai paʻakai liʻiliʻi: 316 kila kuhiliʻole (kū i ka ʻino chloride ion);
ʻO ka hoʻomehana ʻana i ka waika hydrochloric / ka hopena alkali ikaika: titanium alloy a i ʻole Hastelloy alloy (me nā koi kūpaʻa ʻino ikaika);
Meaʻai meaʻai wela wela wela: 316 kuhiliʻole kila (maʻemaʻe+corrosion-pale);
ʻO ka hoʻomehana kinoea wela wela (800 ℃): 310S kila kila (kū kūʻē i ka hoʻonā wela kiʻekiʻe)
Inā makemake ʻoe e ʻike hou aku e pili ana i kā mākou huahana, e ʻoluʻolukāhea iā mā˚ou!
Ka manawa hoʻouna: ʻAukake-18-2025
