ʻO Super Duplex Steel S32750 Tube, Pono, Bara, Pepa, Forging
Nā Huahana Loaʻa
Paipu maʻemaʻe ʻole, Pāpaʻa, ʻOkoʻo, Paʻa, Paʻa, Paipu Paipu.
Nā Kūlana Hana Hana
| Nā kūlana hana | |
| Huahana | ASTM |
| ʻO nā pahu, nā ʻāpana a me nā ʻaoʻao | A 276, A 484 |
| Papa, Pepa a me ka Strip | A 240, A 480 |
| Nā Paipu Hoʻopaʻa ʻole a Weled | A 790, A 999 |
| Na Paipu Hoolele a Weld | A 789, A 1016 |
| Nā lako | A 815, A 960 |
| ʻO nā flanges paipu i kālai ʻia a ʻōwili ʻia a me nā mea hoʻopili paʻa | A 182, A 961 |
| Ka hana ʻana i nā bila a me nā bila | A 314, A 484 |
Hoʻohui Kimia
| % | Fe | Cr | Ni | Mo | C | Mn | Si | P | S | Cu | N |
| Min | kaulike | 24.0 | 6.0 | 3.0 | 0.24 | ||||||
| Max | 26.0 | 8.0 | 5.0 | 0.030 | 1.20 | 0.80 | 0.035 | 0.020 | 0.50 | 0.32 |
Na Waiwai Kino
| ʻO ka mānoanoa | 7.75 g/cm3 |
| hehee | 1396-1450 ℃ |
S32750 Mea Pono
ʻO 2507 he kila kila kila super duplex me ka ʻoi aku ka maikaʻi o ka corrosion a me ka ikaika ma mua o 2205. Hoʻohui ia i nā waiwai maikaʻi loa o nā mea hao ferritic a me austenitic a, ma muli o kona kiʻekiʻe chromium a me ka molybdenum maʻiʻo, he kūpaʻa maikaʻi loa ia i ka ʻaʻahu, pitting a me ka crevice corrosion.ʻO ka hana ʻelua-phase e hōʻoiaʻiʻo i ke kila ke kūpaʻa kiʻekiʻe i ke koʻikoʻi o ka corrosion cracking a me ka ikaika mechanical kiʻekiʻe.
ʻO ka maʻiʻo kiʻekiʻe o ka chromium a me ka molybdenum e hoʻoikaika ikaika ai i ka corrosion holoʻokoʻa o nā waikawa organik e like me ka formic acid, acetic acid, a me nā mea ʻē aʻe, a he ikaika hoʻi ke kūpaʻa corrosion i nā waikawa inorganic, ʻoi aku ka nui o nā chlorides.Hoʻohālikelike ʻia me 904L, ka mea i hoʻolālā kūikawā ʻia e kūʻē i ka waikawa sulfuric maʻemaʻe, ʻoi aku ka ikaika o 2507 i ka corrosion kūʻē i ka diluted sulfuric acid i hui pū ʻia me nā ion chloride.
ʻAʻole hiki ke hoʻohana ʻia ka papa 316L i loko o ke kaiapuni hydrochloric acid, hiki ke hoʻohana ʻia i ka corrosion kūloko a i ʻole ka corrosion holoʻokoʻa, ʻoiai hiki ke hoʻohana ʻia ʻo 2507 i loko o ka wai wai hydrochloric diluted, me ka ikaika anti-spot a me ka anti-crevice corrosion hiki.ʻO ka haʻahaʻa carbon maʻiʻo o 2507 e hoʻemi nui i ka pilikia o ka ua carbide i loko o ka intergranular i ka wā o ka hoʻomaʻamaʻa ʻana i ka wela, a no laila, ua kūpaʻa loa ia i ka corrosion intergranular pili i ka carbide.
Loaʻa i ka 2507 ka ikaika compressive kiʻekiʻe, ka ikaika hopena a me ka coefficient hoʻonui wela haʻahaʻa a me ka conductivity thermal kiʻekiʻe, kūpono kēia mau hiʻohiʻona no nā ʻāpana hana a me nā ʻāpana mechanical.
ʻAʻole pono ke kau ʻia ʻo 2507 i kahi ʻano wela ma mua o 300 ℃ no ka manawa lōʻihi, hiki ke hoʻonāwaliwali i kona paʻakikī.
Kū'ē Kū'ē o S32750 Material
1. Ke kū'ē i ka corrosion
ʻO ka maʻiʻo chromium a me ka molybdenum kiʻekiʻe o SAF 2507 e ʻoi aku ka paʻa ʻana i ka corrosion nui o nā ʻakika organik e like me ka formic acid a me ka acetic acid.Loaʻa i ka SAF 2507 alloy ke kūpaʻa ikaika i nā ʻakika inorganic, ʻoi aku ka nui o nā chlorides.pale ʻino.
Ke hoʻohālikelike ʻia me 904L, ʻoi aku ka ikaika o ka SAF2507 i ka pale ʻana i ka corrosion i ka diluted sulfuric acid i hui pū ʻia me nā ions chloride.ʻO 904L kahi huila i loko o ka mokuʻāina austenitic, i hoʻolālā kūikawā ʻia e pale aku i ka sulfuric acid corrosion.
ʻAʻole hiki ke hoʻohana ʻia ka papa 316L i loko o ke kaiapuni hydrochloric acid, hiki ke pili i ka corrosion kūloko a i ʻole ka corrosion holoʻokoʻa.Hiki ke hoʻohana ʻia ka SAF2507 i loko o ka dilute hydrochloric acid environment, me ka ikaika anti-spot a me ka anti-crevice corrosion.
2. Intergranular corrosion
ʻO ka maʻiʻo kalapona haʻahaʻa o SAF 2507 e hoʻemi nui i ka pilikia o ka ua o ka carbide intergranular i ka wā o ka mālama ʻana i ka wela, no laila, ʻoi loa ke kūpaʻa o kēia alloy i ka carbide-related intergranular corrosion.
3. Stress corrosion māwae
ʻO ke ʻano duplex o SAF 2507 ka mea e kū pono ai i ka pohā ʻino.Ma muli o ka nui o nā mea hao hao, ʻoi aku ka maikaʻi o ka pale ʻana a me ka ikaika o SAF 2507 ma mua o 2205.
Aneane hiki ʻole ke ʻalo ʻia nā māwae i ke kūkulu ʻana, a me nā mea ʻē aʻe.He mana ikaika ko SAF 2507 e pale aku i ka pohā.ʻO ka pale isocorrosion o SAF 2507 i loko o ka sulfuric acid me 2000ppm chloride ions 0.1 mm / makahiki;ka pio isocorrosion i loko o ka waika hydrochloric 0.1 mm / makahiki.
S32205 Nā Wahi Noi
Hoʻohana ʻia ʻo 2507 stainless steel i ka ʻoihana ʻaila a me ke kinoea;ʻO nā paepae aila ʻo Shipotian waho (nā paipu hoʻololi wela, ka mālama ʻana i ka wai a me nā ʻōnaehana hoʻolako wai, nā ʻōnaehana pale ahi, nā ʻōnaehana hoʻoheheʻe wai, nā ʻōnaehana hoʻopaʻa wai; nā lako petrochemical; desalination (desalination) lako (a me nā lako i nā paipu kiʻekiʻe, nā paipu wai kai); a me nā mea hana e pono ai ka ikaika kiʻekiʻe a me ke kūpaʻa ʻino kiʻekiʻe, nā lako hoʻomaʻemaʻe kinoea.
ʻO nā paipu ʻoihana kemika, nā ipu, nā mea hoʻololi wela, nā paipu wai kai i nā mea kanu desalination, nā ʻoihana ʻaila aila a me nā mea hana, nā ʻōnaehana desulfurization o ka mana, nā mea holoi holoi, nā hale kiaʻi absorption, nā pahu wai kemika.
