ʻIkepili Kila Kinoea
Kila kohu ʻoleHe ʻano kila i ʻike ʻia no kona kūpaʻa i ka pala a me nā waiwai ʻaʻole e popo, aia ma ka liʻiliʻi he 10.5% chromium a me ka nui o 1.2% kalapona.
He mea i hoʻohana nui ʻia ke kila kila ma nā ʻoihana like ʻole, kaulana no kona kūpaʻa i ka pala a me ka versatility. Ma waena o nā papa he nui o ke kila kila, ʻo 304, 304H, 304L, a me 316 nā mea maʻamau, e like me ka mea i kuhikuhi ʻia ma ke kūlana ASTM A240/A240M no "Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and General Applications."
No kēia mau papa ʻehā i ka māhele like o ke kila. Hiki ke hoʻokaʻawale ʻia lākou he mau kila kila austenitic ma muli o ko lākou ʻano a me nā kila kila chromium-nickel 300 series ma muli o ko lākou ʻano. ʻO nā ʻokoʻa nui ma waena o lākou aia i ko lākou ʻano kemika, ke kūpaʻa ʻana i ka pala, ke kūpaʻa wela, a me nā kahua noi.
Ke kila kila Austenitic: Hana ʻia me kahi ʻano kristal cubic i waenakonu o ka maka (phase γ), ʻaʻole magnetic, a hoʻoikaika nui ʻia ma o ka hana anu (hiki ke hoʻoulu i kekahi magnetism). (GB/T 20878)
Hoʻohālikelike ʻana i ka Hoʻohuihui Kemika a me ka Hana (Ma muli o nā Kūlana ASTM)
304 kila kila:
- Hoʻonohonoho NuiAia ma kahi o 17.5-19.5% chromium a me 8-10.5% nickel, me kahi liʻiliʻi o ke kalapona (ma lalo o 0.07%).
- Nā Waiwai MekanikaHōʻike i ka ikaika tensile maikaʻi (515 MPa) a me ka elongation (ma kahi o 40% a ʻoi aku paha).
304L kila kila:
- Hoʻonohonoho NuiUa like ia me 304 akā me ka emi ʻana o ka nui o ke kalapona (ma lalo o 0.03%).
- Nā Waiwai MekanikaMa muli o ka haʻahaʻa o ke kalapona, ʻoi aku ka haʻahaʻa o ka ikaika tensile ma mua o 304 (485 MPa), me ka elongation like. Hoʻonui ka haʻahaʻa o ke kalapona i kāna hana kuʻihao.
304H kila kila:
- Hoʻonohonoho NuiʻO ka maʻamau, ʻo ka nui o ke kalapona mai 0.04% a i 0.1%, me ka manganese i hoʻemi ʻia (a hiki i ka 0.8%) a me ka silicon i hoʻonui ʻia (a hiki i ka 1.0-2.0%). Ua like ka nui o ka chromium a me ka nickel me 304.
- Nā Waiwai MekanikaʻO ka ikaika tensile (515 MPa) a me ka elongation ua like ia me 304. Loaʻa iā ia ka ikaika maikaʻi a me ke kūpaʻa i nā mahana kiʻekiʻe, e kūpono ai no nā wahi wela kiʻekiʻe.
316 kila kila:
- Hoʻonohonoho NuiAia i loko he 16-18% chromium, 10-14% nickel, a me 2-3% molybdenum, me ka nui o ke kalapona ma lalo o 0.08%.
- Nā Waiwai MekanikaKa ikaika tensile (515 MPa) a me ka elongation (ʻoi aku ma mua o 40%). Loaʻa iā ia ke kūpaʻa ʻoi aku ka maikaʻi ma mua o ka pala.
Mai ka hoʻohālikelike ʻana ma luna, ua maopopo he like loa nā ʻano mechanical o nā papa ʻehā. Aia nā ʻokoʻa i ko lākou ʻano, kahi e alakaʻi ai i nā ʻokoʻa o ke kūpaʻa ʻana i ka pala a me ke kūpaʻa wela.
Hoʻohālikelike ʻana i ke kūpaʻa ʻana o ke kila kila kila a me ke kūpaʻa wela
Ke kū'ē ʻana i ka palaho:
- 316 kila kilaMa muli o ke alo o ka molybdenum, ʻoi aku ka maikaʻi o kona kūpaʻa ʻana i ka pala ma mua o ka moʻo 304, ʻoi aku hoʻi i ka pala chloride.
- 304L kila kilaMe kona haʻahaʻa kalapona haʻahaʻa, loaʻa iā ia ke kūpaʻa maikaʻi i ka pala, kūpono no nā wahi ʻino. ʻOi aku ka haʻahaʻa o kona kūpaʻa i ka pala ma mua o 316 akā ʻoi aku ka maikaʻi o ke kumukūʻai.
Ke kū'ē wela:
- 316 kila kilaʻO kona hui chromium-nickel-molybdenum kiʻekiʻe e hāʻawi i ke kūpaʻa wela maikaʻi ma mua o ke kila kila 304, ʻoi aku hoʻi me ka molybdenum e hoʻonui ana i kona kūpaʻa oxidation.
- 304H kila kilaMa muli o kona kalapona kiʻekiʻe, manganese haʻahaʻa, a me ka silicon kiʻekiʻe, hōʻike pū ia i ke kūpaʻa wela maikaʻi i nā mahana kiʻekiʻe.
Nā kahua noi kila kila
304 kila kilaHe papa kumu kūpono a kūpono hoʻi i ke kumukūʻai, hoʻohana nui ʻia i ke kūkulu ʻana, ka hana ʻana, a me ka hana ʻana i ka meaʻai.
304L kila kilaʻO ka mana haʻahaʻa kalapona o 304, kūpono no ka ʻenekinia kemika a me ke kai, me nā ʻano hana like me 304 akā ʻoi aku ka maikaʻi no nā wahi e koi ana i ke kūpaʻa kiʻekiʻe i ka pala a me ka ʻike kumukūʻai.
304H kila kilaHoʻohana ʻia i loko o nā superheaters a me nā reheaters o nā paila nui, nā paipu mahu, nā mea hoʻololi wela i ka ʻoihana petrochemical, a me nā noi ʻē aʻe e pono ai ke kūpaʻa maikaʻi i ka pala a me ka hana wela kiʻekiʻe.
316 kila kilaHoʻohana pinepine ʻia i nā wili pulp a me ka pepa, ka ʻoihana kaumaha, nā lako hana kemika a me nā lako mālama, nā lako hoʻomaʻemaʻe, nā lako lapaʻau a me nā lako lāʻau lapaʻau, ka ʻaila a me ke kinoea ma waho, nā wahi kai, a me nā mea kuke kiʻekiʻe.
Ka manawa hoʻouna: Sep-24-2024