Thaum xaiv npib tsib xee-raws li alloys rau hydrochloric acid (HCl) kev pab cuam, corrosion kuj-tsis yog lub zog xwb- dhau los ua qhov kev txiav txim siab. Ob lub siab -kev ua tau zoo alloys feem ntau suav hais tias yog Inconel® 718 (UNS N07718) thiab HAYNES® 282® (UNS N07208). Thaum ob qho tib si yog npib tsib xee alloys hwm, lawv tus cwj pwm hauv hydrochloric acid ib puag ncig txawv heev.
Kab lus no muab cov ntaub ntawv meej meej, - tsav kev sib piv ntawm Inconel 718 vs Haynes 282 hauv HCl, pab pawg neeg yuav khoom kom tsis txhob raug nqi khoom siv tsis raug.
Vim li cas hydrochloric acid yog ib qho kev sim ntsuas qhov chaw tseem ceeb?
Hydrochloric acid yog ib qho ntawm feem ntau corrosive txo cov kua qaub thiab muaj cov teebmeem hauv qab no ntawm cov khoom siv hlau: kev tawg sai ntawm cov hlau, hnyav pitting thiab crevice corrosion, thiab tsis muaj peev xwm ntawm cov alloys feem ntau los tsim cov txheej txheem tiv thaiv oxide ruaj khov hauv ib puag ncig hydrochloric acid. Ntau lub siab - zog nickel alloys, txawm hais tias lawv qhov kev ua tau zoo heev - qhov kub thiab txias, tseem ua tsis tau nyob rau hauv ib puag ncig hydrochloric acid.
Puas yog Inconel 718 resistant rau hydrochloric acid corrosion?
Puas yog Inconel 718 resistant rau hydrochloric acid corrosion?
Inconel 718 muajtxwv tsis kam rau hydrochloric acid (HCl), tshwj xeeb ntawmsiab dua concentration thiab kub; thaum nws cov chromium (~ 19%) thiab npib tsib xee (~ 50-55%) muab kev tiv thaiv oxidation zoo,HCl yog ib qho kev txo qis acid, thiab corrosion tus nqi tuaj yeem nce sai heev saum toj noroom temperature or >5-10% HCl, ua Inconel 718tsis tsim nyog rau kev pabcuam HCl txuas ntxivpiv nrog siab -Mo alloys.
Puas yog Haynes® 282 corrosion ntau dua{1}} tiv taus ntau dua Inconel 718 hauv ib puag ncig hydrochloric acid?
Tsis yog -Haynes 282 tsis muaj peev xwm tiv taus hydrochloric acid ntau dua li Inconel 718; Txawm hais tias nws muaj qhov zoo heev - kub lub zog thiab oxidation tsis kam, nws cov ntsiab lus molybdenum qis txhais tau hais tias nws tseem ua haujlwm tsis zoo hauv kev txo cov kua qaub xws li HCl, thaum alloys xws li Hastelloy C-276 lossis Alloy 625 muab cov nqi qis dua thiab nyiam rau hydrochloric acid ib puag ncig.
inconel 718 vs haynes 282: Tshuaj Tsim Kev Ntseeg
| Alloy | Lub Hom Phiaj Tsim Tseem Ceeb |
|---|---|
| ib 718 | Siab zog, qaug zog & creep kuj |
| Haynes 282 | Ultra- kub siab zog & weldability |
inconel 718 vs haynes 282: Kev sib piv tshuaj lom neeg (wt.%)
| Element | ib 718 | Haynes 282 |
|---|---|---|
| Nickel (Ni) | 50–55 | Sib npaug (~57) |
| Chromium (Cr) | 17–21 | 19–21 |
| Molybdenum (hli) | 2.8–3.3 | ~8.5 |
| Hlau (Fe) | Tshuav | Tsawg dua los yog sib npaug li 1.5 |
| Aluminium (Al) | 0.2–0.8 | 1.5 |
| Titanium (Ti) | 0.65–1.15 | 2.1 |
| Cobalt (zeeg) | Tsawg dua los yog sib npaug rau 1.0 | ~10 |
Inconel 718 vs haynes 282: Corrosion Resistance hauv Hydrochloric Acid (HCl)
| Qhov xwm txheej | ib 718 | Haynes 282 |
|---|---|---|
| Dilute HCl (<5%) at RT | pluag | Ncaj ncees |
| HCl (5-10%) | pluag heev | pluag |
| Kub HCl | Tsis haum | Tsis haum |
| Localized corrosion txaus ntshai | Siab heev | Siab |
inconel 718 vs haynes 282: Tus nqi Corrosion (Indicative, mm/xyoo)
| Alloy | Dilute HCl (RT) |
|---|---|
| ib 718 | >5.0mm / xyoo |
| Haynes 282 | ~ 2.0-3.5 hli / xyoo |
| Hastelloy C276 (kev siv) | < 0.5 mm/year |
inconel 718 vs haynes 282: Lub zog vs Corrosion Trade
| Khoom | ib 718 | Haynes 282 |
|---|---|---|
| Yield zog (RT) | ~ 1030 MPa | ~ 760 MPa |
| Max kev pab temp | 650 degree | 900+ degree |
| HCl tsis kam | pluag | me ntsis zoo dua |
| Hom kev siv HCl | Tsis pom zoo | Txwv, tswj |
Inconel 718 lwm tus neeg
Ntawm GNEE, Inconel 718 muaj nyob rau hauv ntau hom ntawv kom tau raws li kev xav tau ntau yam kev lag luam:
Phaj thiab Sheets (txias dov thiab kub dov)
Bars thiab Rods (puab, square, hexagonal)
Tubes (seamless thiab welded)
Hlau thiab Strips (rau springs, fasteners, hluav taws xob siv)
Forgings thiab Custom Parts (raws li kos duab lossis specifications)
Specifications: UNS NO7718, WNR 2.4668, AFNOR NC19FeNb, JIS NCF 718, GOST ХН75МБТЮ, EURONORM NiCr22Mo9Nb, OR ЭИ602, BS NA 21.
Qhov kub thiab txias: -423 ° F txog 1300 ° F.
Kev xeem thiab cov ntaub ntawv: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, Destructive Test Reports, Non-Destructive Test Reports, PMI Test Reports, Visual Inspection Reports, Third-Party Inspection Reports, NABL Certified Laboratory Reports.
Ntim: Ntoo crates, npuas qhwv, steel strapping, los yog ntim raws li tus neeg yuav tsum tau muaj.
