ʻAʻole ʻo N08028 kahi māka āu e kuhikuhi wale nei. No nā mea ʻenekinia a me nā hui kūʻai kūʻai ʻana i nā ʻāpana kila kila kūikawā N08028, ʻo ke kū ʻana o ka corrosion o nā mea i ka hapalua wale nō o ka moʻolelo. Aia ia i loko o ka ʻohana austenitic high-alloy, i hoʻolālā ʻia no nā kaiapuni kahi e hāʻule ai ka 316L—nā ʻakika concentrated, nā kahawai kaʻina chloride-waiwai, a me nā kūlana kinoea ʻawaʻawa. ʻO ka hapa ʻē aʻe o ka moʻolelo inā paha e hiki ke hana ʻia ka ʻāpana i ke kaha kiʻi, mālama pono ʻia ka wela, a hōʻoia ʻia ma mua o ke komo ʻana i ka lawelawe. Hoʻopili kēia ʻatikala i ka haku mele a me nā waiwai i nā mea maoli o ka hana ʻana a me ka loaʻa ʻana o nā mea N08028.
He aha ka N08028 kuhiliʻole?
ʻO N08028 kahi kila kila austenitic kiʻekiʻe i ʻike ʻia e ka helu UNS N08028 a me ka inoa ʻEulopa 1.4563 (X1NiCrMoCu 31-27-4). Ke kūʻai ʻia nei ma lalo o nā inoa kalepa me Sanicro 28, Alloy 28, a me Incoloy 028. Ua hoʻomohala ʻia ka papa no ka lawelawe ʻana i nā media corrosive nui, ʻoi aku ka hoʻoili ʻana i ka waikawa phosphoric, a mai ia manawa ua hoʻohana ʻia i ka hana kemika, ka aila a me ke kinoea, a me nā lako hoʻomalu pollution.
Hōʻike ʻia ka alloy e kahi mea nickel kiʻekiʻe (ma kahi o 31%), chromium kiʻekiʻe (ma kahi o 27%), a me nā hoʻohui o ka molybdenum a me ke keleawe. Hoʻokaʻawale kēia hui ʻana mai nā māka austenitic maʻamau: ʻaʻole ia he 316L i hoʻololi ʻia a i ʻole he "super austenitic" ma ke ʻano maʻamau, akā he haku mele kūikawā i hana ʻia no ke kūʻē ʻana i nā waikawa oxidizing a me ka hoʻohaʻahaʻa ʻana, me ke keleawe e pāʻani ana i ke kuleana nui i ka lawelawe ʻana i ka sulfuric acid.
No ke kūʻai ʻana a me nā kikoʻī kikoʻī, pono e ʻike ʻia ka mea ma kāna helu UNS a i ʻole EN ma mua o nā inoa kalepa wale nō. Hoʻopili ʻo ASTM B668 i ka UNS N08028 a me N08029 seamless pipe a me ka paipu no ka lawelawe corrosive maʻamau, e koi ana i ke kūlana hoʻonā-annealed a me ka wehewehe ʻana i nā koi hoʻāʻo kemika, tensile, a me ka hydrostatic.
Hoʻohui Kimia a me nā mea nui
ʻO ka inoa inoa o N08028 (UNS N08028 / EN 1.4563) ma kahi o: chromium 27%, nickel 31%, molybdenum 3.5%, keleawe 1.0%, me ke kalapona i kaupalena ʻia i ≤0.020%. ʻO ka haʻahaʻa kalapona haʻahaʻa (ELC grade) e hōʻemi i ka pilikia o ka sensitization i ka wā wili a me ka ʻike wela kiʻekiʻe.
Hōʻike maʻamau ʻia ka helu hoʻohālikelike ʻana o ka pitting resistance (PRE) no N08028 me ka liʻiliʻi o 38, helu ʻia e ke kumu maʻamau PRE = %Cr + 3.3 × %Mo + 16 × %N. Hōʻike nā kumu ʻaoʻao ʻekolu i nā waiwai PRE ma kahi o 38-41, ma muli o ke ʻano huahana a me ke kumu helu. Aia kēia i ka N08028 ma luna o 316L (PRE maʻamau ~ 25-28) a ma ka laulā o nā māka austenitic super, ʻoiai ʻaʻole hiki ke hoʻololi pololei ʻia me nā māka kiʻekiʻe-molybdenum e like me 6Mo alloys.
Hōʻike ʻia nā waiwai mechanical no ka solution-annealed bar stock ma ka liʻiliʻi loa o ka ikaika hua (Rp0.2) o 220 MPa, tensile ikaika 550-750 MPa, a me ka elongation ≥35%. ʻO ka paʻakikī maʻamau ≤220 HB. Hāʻawi ka microstructure austenitic i ka paʻakikī hopena maikaʻi a hiki i nā mahana cryogenic.
Papa: Hoʻohui inoa inoa a me nā waiwai koʻikoʻi o N08028 (nā waiwai kuhikuhi)
| ʻĀpana | Waiwai |
| Cr / Ni / Mo / Cu | ~27% / ~31% / ~3.5% / ~1.0% |
| Kalapona (max) | 0.020% |
| PRE (ʻano maʻamau) | ~38–41 (pili i ka helu helu) |
| Rp0.2 (hoʻoheheʻe annealed) | ≥220 MPa |
| ʻO Rm | 550–750 MPa |
| ʻO ka lōʻihi | ≥35% |
Sources: Alleima datasheet for Sanicro 28. He mea helu nā waiwai a pono e hoʻopaʻa ʻia e pili ana i ke ʻano huahana kikoʻī a me ka hōʻoia o ka mea hoʻolako.
Pehea ka hoʻohālikelike ʻana o N08028 me nā kila kuhili ʻole maʻamau
ʻO ka hoʻohālikelike me 304 a me 316L ka mea a ka poʻe heluhelu e hana ai, a ʻo nā ʻokoʻa ke kūkulu, ʻaʻole marginal.
| Papa | Cr | Ni | Mo | Cu | PRE (maʻamau) |
| 304 | ~18% | ~8% | — | — | ~18–20 |
| 316L | ~16–18% | ~10–14% | ~2–3% | — | ~25–28 |
| N08028 | ~27% | ~31% | ~3.5% | ~1.0% | ≥38 |
ʻO nā waiwai PRE he mau pae hōʻike i ʻokoʻa me ke ʻano kikoʻī a me ke ʻano helu helu.
ʻO ka maʻiʻo nickel o N08028 ma kahi o ʻekolu a ʻehā paha manawa o ka 304 a i ʻole 316L. He mea nui kēia no nā kumu ʻelua. ʻO ka mea mua, hoʻomaikaʻi ka nickel kiʻekiʻe i ke kūʻē ʻana i ka chloride stress corrosion cracking, kahi ʻano hana ʻole i hiki ke hana ma 304 a me 316L ma lalo o ke koʻikoʻi tensile a me ka hoʻolaha chloride. ʻO ka lua, hoʻopaʻa ka nickel i ke ʻano austenitic a kōkua i ka paʻakikī.
Hāʻawi nā pae chromium a me molybdenum i ka pale ʻana i ka lua a me ka crevice corrosion i hōʻike ʻia i ka waiwai PRE. Ua hōʻoia ka noiʻi e pili ana i nā kila stainless superaustenitic ʻo ka hoʻonui ʻana i ka Cr, Mo, a me N ʻike e hoʻomaikaʻi i ka pale ʻana i ka corrosion i loko o ka media chloride, ʻoiai nā mea hoʻohui keleawe e hoʻoikaika pono i ke kūʻē ʻana i ka waikawa sulfuric. ʻO ia ke kumu i koho pinepine ʻia ai ʻo N08028 no nā kaiapuni phosphoric a me ka sulfuric acid kahi e ʻino ai ʻo 316L i nā kumukūʻai ʻae ʻole.
ʻO ke kālepa-off ke kumukūʻai a me ka machinability. ʻO ka maʻiʻo alloying e hāʻawi ana i ke kūpaʻa corrosion e ʻoi aku ka nui o ka N08028 i hoʻokahi kilokani a ʻoi aku ka koi i ka mīkini. ʻAʻole ia he hoʻonui kumu nui mai 316L; he koho i koho ʻia no nā kaiapuni kahi e hōʻoia ai ka pōʻino i ke kumu kūʻai.
Nā Hana Hana no N08028 Nā ʻāpana kila kila
ʻO ke ala hana mua no N08028 nā ʻāpana kila kila kūikawā ʻO ka mīkini CNC mai ka lāʻau lāʻau, ka pahu hollow, a i ʻole ka billet forged. Loaʻa ka mea i loko o ka solution-annealed condition e like me ka pahu poepoe, ka pahu hollow, a me ka paipu ʻole. No ka hapa nui o nā ʻāpana mīkini-ʻo nā ʻōpala, nā kīwaha kūloko, nā mea pono, a me nā kino mea kani-ʻo ke kaʻina hana: e kiʻi i ka pahu annealed a i ʻole ka pahu hollow i ke anawaena i makemake ʻia, ka mīkini i ka ʻupena kokoke a i ʻole ke ʻano hope, a hōʻoia i nā ana a me ke kūlana waiwai.
Hoʻohana ʻia ka forging no nā ʻano nui a paʻakikī paha kahi e makemake ai ka hoʻohana ʻana i nā mea a me ka hoʻolālā palaoa i kahi preform i hoʻopaʻa ʻia ma luna o ka waihona bar. Hiki ke hana wela ka N08028, akā ʻoi aku ka liʻiliʻi o ka puka aniani ma mua o nā māka austenitic maʻamau. Hōʻike nā kumu ʻoihana kūʻokoʻa ʻole i ka pae hana wela ma kahi o 1050–1200°C me ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa ma luna o 950°C, akā ʻaʻole ʻike ʻia kēia alakaʻi i ka ʻikepili Alleima i loiloi ʻia no kēia ʻatikala a pono e hōʻoia pololei ʻia me ka mea hoʻolako mea no kekahi hana forging.
Hiki i ka welding a ua wehewehe ʻia ʻo N08028 me ka maikaʻi o ka weldability, akā welded N08028 Pono nā ʻāpana e nānā i ke kūlana post-weld. Hoʻomaopopo ʻo Alleima i nā hana kuʻihao maʻamau, hoʻokomo ka wela i ka metala makua no ka manawa pōkole loa ma mua o ka manawa i lilo ai ka corrosion intergranular i mea pilikia, a he liʻiliʻi ka pilikia o ka hoʻouka ʻana ma hope o ke kuʻi ʻana. Eia nō naʻe, inā e ʻike ʻia ka weld a i ʻole ka wela i ka lawelawe ʻino, hiki ke ʻōlelo ʻia e ka ʻenekini kuleana. Ke nānā nei kēia ʻatikala i nā ʻāpana mīkini; pono e mālama ʻia ka welding ma ke ʻano he hana kūikawā e koi ana i nā kaʻina hana kūpono.
Nā Manaʻo Mīkini no N08028 Nā ʻāpana kila kuʻehiʻe kūikawā
Hōʻike ʻo Mīkini N08028 i nā luʻi maʻamau o ke kila kila austenitic kiʻekiʻe: ka paʻakikī o ka hana wikiwiki, ka haʻahaʻa haʻahaʻa haʻahaʻa, a me ka makemake e pili i nā mea hana ʻoki. ʻO ka nickel kiʻekiʻe a me ka molybdenum content e hoʻonui i kēia mau hopena i hoʻohālikelike ʻia me 316L.
ʻO ka paʻakikī o ka hana ʻo ia ke ʻano hopena no ka hoʻomalu dimensional. Ke ʻoki ʻia ka mea paahana ma mua o ka ʻoki ʻana—no ka lawa ʻole o ka hānai ʻana, ka ʻaoʻao ʻeleʻele, a i ʻole ka hohonu o ka ʻoki ʻia ʻana—e paʻakikī loa ka papa honua. ʻO ka pā aʻe e hālāwai me kahi ʻili ʻoi aku ka paʻakikī, e hoʻolalelale ana i ka hoʻohana ʻana i ka mea hana a me ka hoʻokuke ʻana i ka hana i ke kamaʻilio a me ka pau ʻana o ka ʻili. ʻO ka manaʻo kūpono ʻo ia nā hoʻolālā machining "maʻalahi" me nā hānai māmā a me nā hohonu liʻiliʻi o ka ʻoki ʻana he counterproductive. Pono ka mea hana e hoʻokomo i ka mea ma lalo o ka ʻāpana paʻakikī mai ka pass mua.
He mea nui ka hoʻokele wela. He haʻahaʻa ka haʻahaʻa wela o N08028, no laila ʻoki ʻia ka wela ma ka ʻaoʻao o ka mea hana ma mua o ka hoʻoheheʻe ʻana i loko o ka mea hana a i ʻole chip. Manaʻo ke alakaʻi machining oihana a Alleima no Sanicro 28 e hōʻemi i ka wikiwiki o ka ʻoki ʻana ma kahi o 50-55% ke hoʻohālikelike ʻia me Sanmac 316/316L i ka wā e huli ai me nā mea hana carbide sima i uhi ʻia, ʻoiai e hoʻemi liʻiliʻi a me ka mālama. He wahi hoʻomaka pono kēia, ʻaʻole ia he ʻōlelo hoʻolaha maʻamau no ka "stainless steel." ʻO ka mea hoʻoheheʻe kiʻekiʻe i kuhikuhi ʻia ma ka ʻāpana ʻoki e kōkua i ka mālama ʻana i ke ola mea hana. Pono e hoʻohālikelike ʻia ke geometry mea hana a me ke koho papa me ka hana kikoʻī; ʻO kahi mea hoʻolako me ka ʻike i nā alloys austenitic high-nickel e hoʻokumu i nā palena ma mua o ka hoʻokolohua ʻana i ka hana.
Pono ka nānā pono ʻana o ka ʻili no nā ʻāpana pale-corrosion. Hiki ke hoʻololi i ke koʻikoʻi a me nā loli microstructural i ka hoʻomaka ʻana o ka corrosion kūloko. ʻOiai ʻo ka pane pololei o ka ili o N08028 i ka mīkini ʻaʻole i kākau ʻia ma nā kumu i loaʻa i ka lehulehu ma mua o 316L, pili ka loina maʻamau: ʻaʻole like ka ili i hoʻopaʻa ʻia i ka hana me ka ʻoki maʻemaʻe i ka wā e kū ai ka ʻāpana i ke kemika koʻikoʻi. No nā ili hoʻopaʻa koʻikoʻi a i ʻole nā wahi pulu, pono e hōʻoia a hōʻoia ʻia ka hana hoʻopau ʻana a me ke kūlana paahana.
ʻO ka pololei o nā ana, nā hoʻomanawanui, a me ka hoʻopau ʻana i ka ʻili
Pono ka hoʻomanawanui a me ka hoʻopau ʻana i nā ʻāpana N08028 e ka hana, ʻaʻole ma ka manaʻo e koi ʻia kahi mea "kūikawā" i ka hoʻomanawanui paʻa. ʻO ka nui o ka kikoʻī ma nā hiʻohiʻona hana ʻole e hoʻonui i ke kumukūʻai a me ka pōʻino ʻole me ka hoʻomaikaʻi ʻole i ka hana.
No nā ʻili hana—nā maka sila, nā kuʻekuʻe, nā anawaena male—pono nā ʻae ʻana e hōʻike i nā koi o ka hui. Pono paha ka puke pai o ka pump shaft a i ʻole ka pahu valve i ka IT7 a ʻoi aku ka maikaʻi, aʻo nā puka hoʻomaʻemaʻe a me nā ʻaoʻao pili ʻole hiki ke hoʻohana i nā ʻae ākea. Pono ka mea hoʻolako mīkini e hōʻoia i ka hiki no ke ʻano kikoʻī a me ke kūlana waiwai ma mua o ka manaʻo ʻia mai ka ʻike me 316L.
Hoʻopili ʻia ka hana ʻino a me ka hana ʻino ʻana o ka ʻākala o ka ʻili ma nā ʻili i pulu a sila paha. Hāʻawi ka ʻili ʻōpala i nā wahi hou aku no ka hoʻomaka ʻana o ka lua a hiki ke mālama i nā koena kaʻina hana. No ka hoʻopaʻa ʻana i nā maka, hōʻike pinepine ʻia nā waiwai Ra i ka laulā o 0.8-1.6 μm, ʻoiai ʻo nā mea koʻikoʻi ʻole ke ʻae i ka 3.2 μm a ʻoi aku paha. He mau papa kuhikuhi kēia no nā ʻāpana kila kuhili ʻole i hana ʻia ma ke ʻano maʻamau; ʻo ke kumukūʻai kūpono e pili ana i ke ʻano hoʻopaʻa paʻa a i ʻole koi maʻemaʻe.
Hoʻokahi memo kūpono no nā kaha kiʻi: inā hōʻike ʻia ka hoʻopau ʻana a i ʻole ka ʻae ʻana me ka ʻole o ka ʻae ʻana, hiki i ka mea hoʻolako ke hōʻole i ka hana a i ʻole ke ʻōlelo ʻana i ke kumu kūʻai kiʻekiʻe e hōʻoiaʻiʻo ai i ka hoʻokō. ʻO ka hoʻomaopopo ʻana i ke ʻano o nā papa i hana ʻia a ʻo ia ka hoʻomanawanui maʻamau e kōkua i ka mea hoʻolako a me ka mea kūʻai mai.
Nā Hana Hana Hana o N08028 Nā Mea Kuhili ʻole
ʻO nā noi kahi i koho ʻia ai ʻo N08028 kaʻana like i kahi ʻano maʻamau: ʻoi aku ka maikaʻi o ka corrosion ma mua o ka hiki o 316L, a ʻo ka ʻāpana geometry e koi i ka mīkini ma mua o ke ʻano tubular maʻalahi.
ʻO ka hana kemika a me ka petrochemical. Hoʻohana ʻia ʻo N08028 i nā lako hana phosphoric acid, sulfuric acid handling, a me nā mea hoʻololi wela. ʻO ka hoʻohui keleawe e hoʻomaikaʻi pono i ka hana ma nā kaiapuni sulfuric acid, ʻoiai ka chromium a me ka molybdenum maʻiʻo e kamaʻilio i nā kūlana oxidizing. ʻO nā ʻāpana pump, ʻoki kīpē, a me nā reactor internals i kēia mau lawelawe he mau ʻāpana mīkini maʻamau.
ʻAila a me ke kinoea—lawelawe ʻawaʻawa. I loko o nā kaiapuni i loaʻa iā H₂S, CO₂, a me nā chlorides, hāʻawi ʻo N08028 i ke kūʻē ʻana i ka haki ʻana i ke koʻikoʻi sulfide a me ka haki ʻana i ke koʻikoʻi. Hōʻike ʻo Alleima ua ʻae ʻia ʻo Sanicro 28 ma lalo o NACE MR0175/ISO 15156 no ka lawelawe kūpaʻa ʻana i ka sulfide stress i nā lako hana ʻaila. ʻO nā mea hana i lalo, nā mea hoʻohui, a me nā ʻāpana valve no nā pūnāwai kinoea ʻawaʻawa he mau laʻana. E hoʻomaopopo e pili ana kēia ʻatikala i nā ʻāpana mīkini; uhi ʻia nā huahana tubular e nā kikoʻī ʻokoʻa.
ʻO nā ʻōnaehana hoʻoluʻu wai kai a me ka chloride. ʻO ka waiwai PRE kiʻekiʻe e unuhi i ke kūʻē ʻana i ka lua a me ka crevice corrosion i loko o ka wai chloride. Hōʻike ʻo Alleima i ka ʻike kūpono e hōʻoia ana i ka kūpono o Sanicro 28 no nā paipu lawe wai kai a me nā mea hoʻololi wela hoʻoluʻu wai kai. Hiki ke hoʻohana i ka N08028 i N08028 kahi i hōʻike ʻole ai ʻo 316L i ke ola kūpono ʻole.
Ka hoʻomalu ʻana i ka hoʻohaumia a me ka desulfurization o ke kinoea. Hiki ke ʻoi aku ka nui o ka ʻakika a me ka chloride i loko o nā ʻōnaehana scrubber FGD ma mua o nā palena o nā kila kulika maʻamau. N08028 mau mea i loko o ka damper shafts, spray nozzles, a pāpū i loko he mau laʻana o nā ʻāpana mīkini i koho ʻia no kēia mau kūlana.
I kēlā me kēia hihia, pono e hoʻopaʻa ʻia ke koho mea e kūʻē i ke kemika kikoʻī, ka mahana, a me ke kūlana koʻikoʻi o ka noi. ʻAʻole ʻo N08028 he hopena honua no nā kaiapuni "corrosive"; he hoʻonā no nā kaiapuni kikoʻī kahi e kūpono ai kāna hui ʻana.
ʻO nā koi ʻenehana e hōʻoia i ka wā e loaʻa ai nā ʻāpana N08028
ʻO kahi kauoha kūʻai no nā ʻāpana N08028 e ʻōlelo wale nei "mea waiwai: N08028" waiho nui i ka wehewehe. Pono e hōʻike maopopo ʻia nā koi aʻe i ka nīnau a hōʻoia ʻia i ka ʻōlelo a ka mea hoʻolako a me ka hōʻoia.
ʻIke mea a me ka palapala hōʻoia. E wehewehe iā UNS N08028 a i ʻole EN 1.4563, ʻaʻole he inoa kālepa wale nō. E koi i kahi palapala hōʻike hoʻāʻo waiwai (MTC) no EN 10204 3.1 e hōʻike ana i ka haku mele maoli a me nā waiwai mechanical no ka wela i hoʻohana ʻia. Pono e hōʻike ka palapala hōʻoia i ka hoʻokō ʻana i ke kūlana huahana kūpono (e laʻa, EN 10088-3 no bar).
ʻAno huahana a me ke kūlana. No nā ʻāpana i hana ʻia i ka mīkini, e hōʻike inā ʻo ka mea hoʻomaka ʻo ka pā, ka ʻūhā a i ʻole ke kala ʻana. Pono e ho'olako 'ia ka waihona bar ma ke kūlana i ho'opili 'ia ke 'ole ke koi 'ia nā waiwai i hana anu. E hōʻoia i ke kūlana annealed ma ka palapala hōʻoia.
Hoʻomaʻamaʻa wela ma hope o ka mīkini a wili paha. Inā wili ʻia ka ʻāpana, a i ʻole e hoʻoulu ka mīkini i ka hana anu nui ma kahi ʻāpana koʻikoʻi, e noʻonoʻo inā makemake ʻia ka annealing solution. Ke hilinaʻi nei ʻo N08028 i ka microstructure-annealed solution kūpono no ka pale ʻana i ka corrosion maikaʻi loa. Pono e hoʻoholo ʻia ma ke kaiapuni lawelawe a me ka nui o ka hana anu a i ʻole ka welding, ʻaʻole i hoʻohana ʻia ma ke ʻano he paʻamau. Manaʻo ʻo Alleima i ka hoʻopili ʻana i ka hopena ma 1100–1160°C a ukali ʻia e ka hoʻopau ʻana i ka wai inā makemake ʻia ka mālama wela hou ma hope o ka hana ʻana.
Nānā a ho'āʻo. Ma waho aʻe o ka nānā ʻana i ka nui, e noʻonoʻo inā pono ka ʻike pono mea waiwai (PMI) e hōʻoia i ka ʻike o ka alloy ma nā ʻāpana i hoʻopau ʻia. Hiki i ka ho'āʻo paʻakikī ke hāʻawi i kahi nānā koʻikoʻi i ke kūlana mālama wela. No ka lawelawe corrosion koʻikoʻi, hiki ke kuhikuhi ʻia nā hoʻāʻo corrosion hou aku, ʻoiai e hoʻohui kēia i ke kumukūʻai a me ka manawa alakaʻi.
Maʻemaʻe ʻili. Pono nā ʻāpana kila kila ʻole me ka hao i hoʻopaʻa ʻia mai ka mīkini a lawelawe ʻana paha. E wehewehe e hoʻomaʻemaʻe ʻia nā ʻāpana a hoʻopaʻa ʻia inā e ʻike ʻia lākou i ka lawelawe corrosive. E hōʻalo i nā pulupulu kila kalapona, mea paahana, a i ʻole nā mea paʻa e pili ana me nā ʻili N08028 i hoʻopau ʻia.
FAQ
Ua like anei ka N08028 me Sanicro 28, Alloy 28, a me Incoloy 028?
ʻAe, he mau inoa kālepa kēia no ka haku mele like. ʻO UNS N08028 ka mea hōʻike maʻamau; ʻO EN 1.4563 ka inoa ʻEulopa. E wehewehe i ka helu UNS a i ʻole EN ma nā kaha kiʻi i mea e pale aku ai i ka pohihihi.
Hiki iā N08028 ke hoʻololi pololei iā 316L?
ʻAʻole ma ke ʻano he hoʻololi hoʻoiho me ka ʻole o ka loiloi. Hāʻawi ʻo N08028 i ke kūpaʻa corrosion kiʻekiʻe aʻe i nā ʻakika ikaika a me nā kaiapuni chloride, akā ʻoi aku ke kumukūʻai a ʻoi aku ka paʻakikī o ka mīkini. Pono e ho'āpono ʻia ka hoʻololi ʻana e ke ʻano hāʻule kikoʻī a i ʻole ka helu corrosion i ʻike ʻia me 316L.
Pono anei ʻo N08028 i ka mālama wela post-weld?
Hōʻike ka ʻikepili a Alleima i ka liʻiliʻi o ka hoʻouka kaua intergranular ma hope o ka wili ʻana o Sanicro 28 ma lalo o nā kūlana kuʻi maʻamau. Eia nō naʻe, inā e lawelawe ʻia ka mea welded i loko o kahi ʻano ʻino loa, hiki ke kuhikuhi ʻia ka hoʻonā hoʻonā e ka hana ʻenekinia kuleana no ka lako. Aia ke koi i nā kūlana lawelawe a pono e hoʻoholo i kēlā me kēia hihia.
He aha ka manawa alakaʻi maʻamau no nā ʻāpana mīkini N08028?
ʻO ka manawa alakaʻi e pili ana i ka loaʻa o ka waiwai, ka paʻakikī o ka hapa, a me ka nui. ʻAʻole kēia he nīnau waiwai waiwai a pono e kuhikuhi ʻia i ka mea hoʻolako kikoʻī no ka ʻōlelo.
