1. Dab tsi yog lwm lub npe rau hastelloy?

Hastelloy tsis muaj ib qho kev hloov pauv "hauv lub npe" hauv cov ntaub ntawv kev lag luam. Hloov chaw, nws yog feem ntau lees paub los ntawm ob hom kev pom: nwsHom npethiabCov Qauv Txheej Txheem Alloy Kev Cai(Siv rau hauv lub ntiaj teb rau cov khoom siv tshwj xeeb). Hauv qab no yog cov ncauj lus kom ntxaws tawg ntawm qhov nws tau hloov kho:

Hom lub npe ntsiab lus teb

Hastelloy yog aCov Ntawv Cim Ua Lag LuamMuaj los ntawm Heynes International, inc. {{- ib tug qauv tsim cov chaw tsim khoom ntawm Nickel {}} bued supallots. Hauv kev sib tham txog kev lag luam, qee zaum qee zaum tau qhia nrog lwm tus nickel {}}}}}}}}} {{{{{awe awist alloys (HPCAS) ". Txawm li cas los xij, cov no yog qeb cov lus piav qhia, tsis hloov pauv rau "Hastelloy" hom npe.

Cov Qauv Txheej Txheem Alloy Kev Cai

Txhawm rau kom tsis txhob cia siab rau ntawm cov npe lag luam (tseem ceeb rau cov khoom siv hluav taws xob hauv ntiaj teb Cov kev tsim qauv no tau siv dav hauv kev kos duab engineering, cov ntaub ntawv ua tiav, thiab cov qauv kev lag luam. Cov qauv piv txwv suav nrog:

ASTM (American Society rau kev sim thiab cov ntaub ntawv) kev tsim qauv:

Hastelloy C276 → Astm B575 (rau Phaj / ntawv) lossis ASTM B574 (rau lub raj ntawm seamless).

Hastelloy C22 → Astm B575 / B574.

Hastelloy X → Astm B366 (rau welded fittings) lossis ASTM B581 (rau Forging).

Tsis ua haujlwm (Unified Numbering System):

Hastelloy C276 → unic N10276.

Hastelloy C22 → Tsis Yog N06022.

Hastelloy X → uns unic tsis yog n06002.

Hastelloy b3 → unic tsis n10675.

ISO (International rau cov qauv) kev tsim qauv:

Hastelloy C276 → ISO 15156 {{- 3 (rau cov roj thiab roj 6208 (rau cov khoom siv corrosion-resistant alloys).

Hauv cov ntsiab lus xaus, thaum "haastelloy" tsis muaj ib txoj kev xaiv, nws cov qib kawm yog cov kev ua tsis tau thoob plaws, Astm, lossis ISO cov ntsiab lus.

2. Puas yog hastelloy zoo dua li stainless hlau?

Cov lus teb yog nyob ntawmDaim ntawv thov yuav tsum tau ua{{0- Hastelloy tsis yog thoob ntiaj teb "zoo dua," tab sis nws outtperforms stainless hlau hauv kev mob tshwj xeeb. Txhawm rau muab piv rau lawv kom meej meej, peb tshawb xyuas cov kev ntsuas kev ua haujlwm tseem ceeb thiab siv cov ntaub ntawv:

Tub Ntxhais Kev Ua Haujlwm Sib Piv

Me me	Lawg	Tus Hlau Stainless (piv txwv li, 304, 316, Super Duplex 2507)
Corrosion Kuj	Tshwj xeeb nyob rau hauv kev tawm tsam kev tawm tsam: Tiv thaiv pitting / crevice corrosion nyob rau hauv 98% sulfuric acid, 50% hydrochloric acid, molrodoric acid, thiab qaub roj (h₂s). Unaffed los ntawm chloride - indive kev nyuaj siab corrosion (SCC) txog 400 ° C.	Zoo rau cov dej me me (piv txwv li, cua, dilute acids) {{}} Tsis kam Chloride SCC txog ~ 60 ° C; Super Duplex 2507 pab txhawb qhov no mus ~ 150 ° C tab sis tsis muaj cov kua qaub lossis cov qib siab siab.
High - lub zog kub	Muaj lub zog ntawm 800-1200 ° C (piv txwv li hastelloy x khaws cia 350 mpa tensile lub zog ntawm 800 ° C). Txhim kho creep thiab oxidation ntawm cov huab.	Poob lub zog tseem ceeb tshaj 600 ° C (piv txwv li, 316 muaj<100 MPa tensile strength at 800°C). Susceptible to grain boundary oxidation and creep deformation at high temps.
Tsawg - kub ceev	Khaws ductility thiab kev cuam tshuam tsis kam mus rau -269 ° C (ua kua Helium temp), tsis muaj kev hloov pauv.	Feem ntau cov qib kawm (piv txwv li, 304) ua brittle hauv qab -196 ° C; Cov qhab nia tshwj xeeb (piv txwv li, 304L) txhim kho qhov no tab sis tseem tsis tau nce siab HastelloLy.

Thaum Hastelloy yog "zoo dua"

Hastelloy tau zoo dua hauv cov xwm txheej qhov twg stainless hlau tsis tau, suav nrog:

Kev Ua Yeeb Yam Siv: Tuav cov kua qaub (piv txwv li, 93% sulfuric acid), tshuaj chlorine, lossis tshuaj fluorinated kuab tshuaj.

High -} sov daim ntawv thov: Lub dav hlau cav sib xyaw, nuclear reactor cores, los yog muaj kev muaj zog ua haujlwm ua haujlwm saum 800 ° C.

Huab huab ib puag ncig: Offshore roj zoo nrog cov ntsiab lus siab, lossis cov khoom siv marine rau dej hiav txwv ntawm lub siab.

Thaum Stainless Hlau yog qhov zoo dua

Stainless hlau yog qhov kev xaiv zoo dua rau:

Cov chaw me: Kev ua zaub mov ua (304), cov kws ua vaj tse vaj tse, lossis khoom siv hauv tsev -}} qhov uas corrosion txaus ntshai yog tsawg.

Tus nqi -} Cov phiaj xwm rhiab heev: Stainless steel costs 1/3 to 1/5 of Hastelloy (eg, 316L vs. Hastelloy C276), making it more economical for non-harsh use cases.

Tsawg - temp, tsis - corrosive loads: Cryogenic cia (304L) lossis cov txheej txheem sib xyaw uas muaj zog ntawm Tax temp yog qhov txaus.

Nyob rau hauv luv luv, hastelloy excels hauv "huab" mob "huab cua, thaum stainless hlau muaj zog dua thiab raug nqi {{}}}}}}}}}} txoj haujlwm me.

3. Puas yog hastelloy kim dua li stainless hlau?

Yog lawm,Hastelloy yog qhov tseem ceeb tshaj plaws dua li stainless hlau- Tus nqi sib txawv feem ntau yog li 3x mus rau qib tshwj xeeb piv rau npib tsib xee, molybdenum). Hauv qab no yog cov ncauj lus kom ntxaws tawg ntawm cov tsav tsheb thiab tiag - ntiaj teb tus nqi sib piv:

Tus nqi tseem ceeb rau hastelloy

Tus nqi siab ntawm hastelloy stems los ntawm nws muaj pes tsawg leeg, kev tsim khoom lag luam nyuaj, thiab kev ua tau zoo:

Tsawg, siab - tus nqi alloying ntsiab: Hastelloy muaj feem pua loj ntawm cov khoom kim heev:

Complex chaw tsim khoom lag luam:

Hastelloy yuav tsum tshwj xeeb melting (piv txwv, nqus plua plav melting melting, vim kom tsis txhob muaj cov nqi sib kis thiab cov khoom siv hluav taws xob ntau ntxiv).

Kub / txias ua haujlwm ntawm hastelloy yog qhov nyuaj vim nws lub zog siab thiab ductility; Nws yuav tsum tau qeeb qeeb ua kom ceev, cov cuab yeej tshwj xeeb, thiab nruab nrab annealing cov kauj ruam {}}}} doubling sijhawm los sis peb npaug fabrication sij hawm vs. stainless hlau.

Tsawg Ntau Lawm Ntim: Hastelloy yog "niche" cov khoom siv tsuas yog nyob rau hauv high {{0} {}, itospace, nuclear). Lwj ntau lawm nplai txhais tau tsis tau cov chaw lag luam tsis tuaj yeem siv nyiaj ntau tshaj plaws, muaj ib qho ntawm cov khoom lag luam stainless (muaj ntau lab tons yog txhua xyoo).

Tus nqi txiav txim siab hauv kev siv

Thaum Hastelloy yog kim, nws yog feem ntau tus nqi -}}}}}} Nws tau ua tau zoo nyob hauv ib puag ncig hnyav:

Txo kev saib xyuas: In chemical processing, Hastelloy equipment lasts 10–20 years vs. 2–5 years for stainless steel-avoiding frequent replacement costs.

Zam rau downtime: Hauv Aerospace lossis nuclears, khoom siv tsis ua haujlwm (piv txwv li, ib qho corroded stainless hlau valve) tuaj yeem ua rau lable hauv downtime poob; Hastelloy txoj kev ntseeg tau ncaj qha rau nws tus nqi uper.

Hauv cov ntsiab lus, haastelloy tus nqi yog qhov tshwm sim ncaj qha ntawm nws cov nqi raw thiab kev tsim khoom, tab sis nws nyob qhov twg pheej yig cov hlau tsis tuaj yeem ua.

Lub npe rau Hastelloy