Coil Kuhili ʻole Duplex

ʻO ka wehewehe pōkole:

Papa: ASTM A182 F53, A240, A276, A479, A789, A790, A815, A928, A988 SAE J405etc.

Kūlana: AISI, ASTM, DIN, EN, GB, ISO, JIS

Ka lōʻihi: 2000mm, 2438mm, 3000mm, 5800mm, 6000mm, a i ʻole e like me ke koi o ka mea kūʻai aku

Laulā: 20mm - 2000mm, a i ʻole e like me ke koi o ka mea kūʻai aku

Mānoanoa: 0.1mm -200mm

ʻIli: 2B 2D BA (Bright Annealed) No1 No3 No4 No5 No8 8K HL (Laina lauoho)

Kau Kūʻai: CIF CFR FOB EXW

Ka manawa hoʻouna: I loko o 10-15 mau lā ma hope o ka hōʻoia ʻana i ke kauoha

Uku manawa: 30% TT ma ke ʻano he waihona a me ke koena e kūʻē i kahi kope o B/La i ʻole LC

E hoʻouna i ka leka uila iā mākou WhatsApp Amy@jindalaisteel.com

Huahana Huahana

Nānā o Duplex Stainless Steel

Hoʻokaʻawale ʻia ke kila kila kila super duplex mai nā māka duplex maʻamau e kāna mau waiwai kūpaʻa i ka corrosion. He mea i hoʻohuihui nui ʻia me nā kiʻekiʻe kiʻekiʻe o nā mea anti-corrosive e like me chromium (Cr) a me molybdenum (Mo). ʻO ka papa kila kila kila super duplex mua, S32750, he 28.0% chromium, 3.5% molybdenum, a me 8.0% nickel (Ni). Hāʻawi kēia mau ʻāpana i ke kūʻē kūʻokoʻa i nā mea ʻino, me nā waikawa, nā chlorides, a me nā hopena caustic.

ʻO ka maʻamau, kūkulu ʻia nā kila stainless super duplex ma luna o nā pōmaikaʻi i hoʻokumu ʻia o nā māka duplex me ka hoʻoikaika paʻa kemika. ʻO ia ke kumu kūpono no ka hana ʻana i nā mea koʻikoʻi i ka ʻāpana petrochemical, e like me nā mea hoʻololi wela, nā paila, a me nā mea hana moku.

Nā Pono Mechanical o Duplex Stainless Steel

Papa helu	ʻO ka ASTM A789 Papa S32520 i mālama ʻia me ka wela	ʻO ASTM A790 Papa S31803 Hoʻomaʻamaʻa wela	ʻO ASTM A790 Papa S32304 Hoʻomaʻamaʻa wela	ʻO ka ASTM A815 Papa S32550 i mālama ʻia me ka wela	ʻO ka ASTM A815 Papa S32205 i mālama ʻia me ka wela
Elastic Modulus	200 GPa	200 GPa	200 GPa	200 GPa	200 GPa
ʻO ka lōʻihi	25 %	25 %	25 %	15 %	20 %
Ikaika U'i	770 MPa	620 MPa	600 MPa	800 MPa	655 MPa
ʻO Brinell paʻakikī	310	290	290	302	290
Ka ikaika hua	550 MPa	450 MPa	400 MPa	550 MPa	450 MPa
Koefficient hoʻonui wela	1E-5 1/K	1E-5 1/K	1E-5 1/K	1E-5 1/K	1E-5 1/K
Kaha wela kiko'ī	440 – 502 J/(kg·K)	440 – 502 J/(kg·K)	440 – 502 J/(kg·K)	440 – 502 J/(kg·K)	440 – 502 J/(kg·K)
ʻO ka hoʻoili wela	13 – 30 W/(m·K)	13 – 30 W/(m·K)	13 – 30 W/(m·K)	13 – 30 W/(m·K)	13 – 30 W/(m·K)

Hoʻokaʻawale o Duplex Stainless Steel

l ʻO ke ʻano mua he ʻano haʻahaʻa haʻahaʻa, me ka helu ʻelele o UNS S32304 (23Cr-4Ni-0.1N). ʻAʻole i loko o ke kila ka molybdenum, a ʻo ka waiwai PREN he 24-25. Hiki ke hoʻohana ʻia ma kahi o AISI304 a i ʻole 316 i ke kūpaʻa corrosion koʻikoʻi.

l ʻO ka lua o ke ʻano no ke ʻano alloy medium, ʻo UNS S31803 ka inoa ʻelele (22Cr-5Ni-3Mo-0.15N), ka waiwai PREN he 32-33, a ʻo kona kūpaʻa corrosion ma waena o AISI 316L a me 6% Mo + N austenitic. kila kohu ʻole.

l ʻO ke kolu o ke ʻano he ʻano alloy kiʻekiʻe, nona ka 25% Cr, molybdenum a me ka nitrogen, a aia kekahi i ke keleawe a me ka tungsten. ʻO ka papa maʻamau UNSS32550 (25Cr-6Ni-3Mo-2Cu-0.2N), ʻo ka waiwai PREN he 38-39, a ʻoi aku ka kiʻekiʻe o ke kūpaʻa corrosion o kēia ʻano kila ma mua o ka 22% Cr duplex stainless steel.

l ʻO ka hā o ke ʻano he super duplex stainless steel, nona ka molybdenum kiʻekiʻe a me ka nitrogen. ʻO ka papa maʻamau ka UNS S32750 (25Cr-7Ni-3.7Mo-0.3N), a aia kekahi i ka tungsten a me ke keleawe. ʻOi aku ka nui o ka waiwai PREN ma mua o 40, hiki ke hoʻohana ʻia i nā kūlana maʻamau paʻakikī. Loaʻa iā ia ke kūpaʻa corrosion maikaʻi a me nā waiwai piha mechanical, hiki ke hoʻohālikelike ʻia me ke kila stainless austenitic super.

Pono o Duplex Stainless Steel

E like me ka mea i ʻōlelo ʻia ma luna, ʻoi aku ka maikaʻi o ka Duplex ma mua o nā ʻano kila pākahi i loaʻa i loko o kāna microstructure. ʻOi aku ka maikaʻi, ʻo ka hui pū ʻana o nā hiʻohiʻona maikaʻi e hele mai ana mai nā mea austenite a me ferrite e hāʻawi i kahi hopena holoʻokoʻa maikaʻi loa no ka nui o nā kūlana hana like ʻole.

l Nā waiwai anti-corrosive - ʻO ka hopena o ka molybdenum, chromium, a me ka nitrogen i ka pale ʻana i ka corrosion o Duplex alloys he nui loa. Hiki ke hoʻohālikelike a ʻoi aku ka hana anti-corrosive o nā māka austenitic kaulana e like me 304 a me 316. ʻOi aku ka maikaʻi o ia mau mea e kūʻē i ka crevice a me ka corrosion pitting.

l Ka pohā ʻinoʻino - hele mai ʻo SSC ma muli o nā kumu o ka lewa - ʻo ka mahana a me ka haʻahaʻa ka mea i ʻike ʻia. Hoʻohui wale ke koʻikoʻi tensile i ka pilikia. Hiki ke maʻalahi nā māka austenitic maʻamau i ke koʻikoʻi o ka pohā ʻino - ʻaʻole ʻo Duplex stainless steel.

l Paʻakikī - ʻoi aku ka paʻakikī o ka Duplex ma mua o nā kila ferritic - ʻoiai ma nā haʻahaʻa haʻahaʻa ʻoiai ʻaʻole ia e kūlike me ka hana o nā māka austenitic ma kēia ʻano.

l Ka ikaika - Hiki ke piʻi i ka 2 mau manawa ʻoi aku ka ikaika ma mua o nā hale austenitic a me nā ferritic. ʻO ka ikaika kiʻekiʻe, ʻo ia ka mea e paʻa mau ke metala me ka mānoanoa hoʻemi i mea nui loa no ka hōʻemi ʻana i nā pae kaumaha.