Icupa ry'icyuma kitagira umugese rya Duplex

Ibisobanuro bigufi:

Icyiciro: ASTM A182 F53, A240, A276, A479, A789, A790, A815, A928, A988 SAE J405n'ibindi.

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

Uburebure: 2000mm, 2438mm, 3000mm, 5800mm, 6000mm, cyangwa nk'uko umukiriya abikeneye.

Ubugari: 20mm – 2000mm, cyangwa nk'uko umukiriya abisaba

Ubunini: 0.1mm -200mm

Ubuso: 2B 2D BA (Bright Annealed) No1 No3 No4 No5 No8 8K HL (Umurongo w'umusatsi)

Igihe cy'Ibiciro: CIF CFR FOB EXW

Igihe cyo gutanga: Mu minsi 10-15 nyuma yo kwemeza ko watumije

Igihe cyo kwishyura: 30% TT nk'ingwate n'asigaye ugereranyije na kopi ya B/Lcyangwa LC

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Ibisobanuro birambuye ku gicuruzwa

Ibirango by'ibicuruzwa

Incamake y'icyuma gifunganye cya Duplex

Icyuma gikozwe muri super duplex gitandukanye n’icyiciro gisanzwe cya duplex bitewe n’ubushobozi bwacyo bwo kurwanya ingese bwarushijeho kuba bwiza. Ni ibikoresho bivanze cyane bifite ingano nyinshi y’ibintu birwanya ingese nka chromium (Cr) na molybdenum (Mo). Icyuma gikozwe muri super duplex, S32750, kigizwe na chromium 28.0%, molybdenum 3.5%, na nikeli 8.0% (Ni). Ibi bice bitanga ubudahangarwa budasanzwe ku bintu birwanya ingese, harimo aside, chloride, n’ibisubizo bya caustic.

Muri rusange, ibyuma bitagira umuvuduko wa kabiri bishingira ku byiza byagaragajwe byo gukoresha imiterere ya kabiri hamwe no gukomera kw'imiti. Ibi bituma biba urwego rwiza rwo gukora ibintu by'ingenzi mu rwego rwa peteroli, nk'ibikoresho bihindura ubushyuhe, ibyuma bishyushya, n'ibikoresho by'imiyoboro y'umuvuduko.

Imiterere ya tekiniki y'icyuma gifunganye cya Duplex

Amanota	ASTM A789 Grade S32520 Ivurwa n'ubushyuhe	ASTM A790 Grade S31803 Ivurwa n'ubushyuhe	ASTM A790 Grade S32304 Ivurwa n'Ubushyuhe	ASTM A815 Grade S32550 ivurwa n'ubushyuhe	ASTM A815 Grade S32205 Ivurwa n'ubushyuhe
Modulus irashya	200 GPa	200 GPa	200 GPa	200 GPa	200 GPa
Kurekura	25%	25%	25%	15%	20%
Imbaraga zo Gufata	770 MPa	620 MPa	600 MPa	800 MPa	655 MPa
Ubukomere bwa Brinell	310	290	290	302	290
Imbaraga z'umusaruro	550 MPa	450 MPa	400 MPa	550 MPa	450 MPa
Igipimo cyo kwaguka k'ubushyuhe	1E-5 1/K	1E-5 1/K	1E-5 1/K	1E-5 1/K	1E-5 1/K
Ubushobozi bwihariye bwo gushyuha	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)
Ubushobozi bwo gutwara ubushyuhe	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)

Ishyirwa mu byiciro ry'icyuma gifunganye cya Duplex

Ubwoko bwa mbere ni ubwoko bw'icyuma gito, gifite urwego ruhagarariye UNS S32304 (23Cr-4Ni-0.1N). Icyuma ntigikubiyemo molybdenum, kandi agaciro ka PREN ni 24-25. Gishobora gukoreshwa aho gukoresha AISI304 cyangwa 316 mu kurwanya ingese.

Ubwoko bwa kabiri ni ubwo mu bwoko bw'icyuma giciriritse, ikirango cyihariye ni UNS S31803 (22Cr-5Ni-3Mo-0.15N), agaciro ka PREN ni 32-33, kandi ubushobozi bwayo bwo kurwanya ingese buri hagati ya AISI 316L na 6% Mo+N icyuma kitagira umugese cya austenitic.

Ubwoko bwa gatatu ni ubwo mu bwoko bwa aloyi nyinshi, muri rusange burimo 25% Cr, molybdenum na azote, kandi bumwe burimo umuringa na tungsten. Agaciro ka PREN gasanzwe ka UNSS32550 (25Cr-6Ni-3Mo-2Cu-0.2N), ni 38-39, kandi ubushobozi bwo kurwanya ingese bw'ubu bwoko bw'icyuma buri hejuru y'ubw'icyuma cya Cr duplex cya 22%.

Ubwoko bwa kane ni icyuma kitagira umugese cya super duplex, gifite molybdenum nyinshi na azote. Igipimo gisanzwe ni UNS S32750 (25Cr-7Ni-3.7Mo-0.3N), kandi bimwe birimo tungsten na umuringa. Agaciro ka PREN karenze 40, gashobora gukoreshwa mu bihe bikomeye. Gifite ubushobozi bwo kurwanya ingese neza kandi gifite imiterere ihagije ya mekanike, ishobora kugereranywa n'icyuma kitagira umugese cya super austenitic.

Ibyiza bya Duplex Stainless Steel

Nkuko byavuzwe haruguru, Duplex isanzwe ikora neza kurusha ubwoko bw'icyuma burimo imiterere yacyo. Ikigaragara kurushaho, guhuza imiterere myiza ikomoka kuri austenite na ferrite bitanga igisubizo cyiza muri rusange ku bintu byinshi bitandukanye bikorerwamo.

l Imiterere yo kurwanya kwangirika – Ingaruka za molybdenum, chromium, na azote ku kurwanya kwangirika kwa aloyi za Duplex ni nyinshi cyane. Aloyi nyinshi za Duplex zishobora guhura no kurenza imikorere yo kurwanya kwangirika nk'uko bisanzwe muri austenitic grades harimo 304 na 316. Zigira ingaruka nziza cyane mu kurwanya kwangirika no gucika kw'imirongo.

l Gucika kw'umucanga mu buryo bwa "stress corruption" – SSC iterwa n'ibintu byinshi biri mu kirere – ubushyuhe n'ubushuhe ni byo bigaragara cyane. Gucika kw'umucanga mu buryo bwa "tensile stress" byongera ikibazo. Ingano zisanzwe za "austenitic" zishobora kwangirika cyane mu buryo bwa "stress corruption" – Ibyuma bita "duplex stainless steel" ntabwo ari byo.

Ubukomere – Duplex irakomeye kurusha ibyuma bya ferritic – ndetse no mu bushyuhe buri hasi mu gihe idahuye n’imikorere y’ibipimo bya austenitic muri uru rwego.

l Ingufu – Uduce dutatu tw’icyuma dushobora gukomera inshuro zigera kuri ebyiri kurusha imiterere ya austenitic na ferritic. Ingufu nyinshi bivuze ko icyuma gikomeza gukomera nubwo ubunini bwacyo bwagabanuka, ibyo bikaba ari ingenzi cyane mu kugabanya uburemere.