Q1: Dab tsi yog qhov tseem ceeb ntawm cov tshuaj muaj pes tsawg leeg ntawm Inconel 600 seamless raj, thiab nws txiav txim siab li cas cov khoom lag luam kev ua tau zoo?
A1: Inconel 600 yog npib tsib xee-chromium- hlau raws superalloy, nrog rau nws cov chemical muaj pes tsawg leeg tswj nruj raws li hauv qab no: yam tsawg kawg nkaus 72% npib tsib xee, 14-17% chromium, 6-10% hlau, siab tshaj 0.15% carbon, siab tshaj plaws 0.5% thiab 1.0% txiv neej Cov ntsiab lus siab npib tsib xee (Ntau dua lossis sib npaug li 72%) yog lub hauv paus ntawm nws cov kev tiv thaiv corrosion zoo heev thiab kub-kub ruaj khov, ua rau nws tiv taus cov tshuaj chloride kev nyuaj siab corrosion thiab hnyav xov xwm yaig. Chromium (14-17%) forms a dense, stable oxide film on the tube surface, effectively preventing oxidation and scaling at high temperatures. Hlau yog ntxiv los txhim kho cov khoom siv kho tshuab thiab kev ua haujlwm, thaum kev tswj nruj ntawm impurities (xws li carbon thiab sulfur) ua kom lub raj ductility thiab zam kev ua haujlwm tsis zoo.
Q2: Dab tsi yog cov khoom tseem ceeb ntawm Inconel 600 seamless raj, thiab dab tsi ua haujlwm nws tuaj yeem hloov kho?
A2: Inconel 600 seamless raj muaj cov cuab yeej zoo heev, tshwj xeeb tshaj yog tom qab cov txheej txheem kev daws teeb meem (1050-1150℃, ua raws li qhov txias txias). Nws cov cuab yeej siv tau zoo yog: tensile zog Ntau dua lossis sib npaug ntawm 550 MPa (80 ksi), yield zog Ntau dua lossis sib npaug rau 240 MPa (35 ksi), thiab elongation Ntau dua lossis sib npaug li 30%. Cov khoom no tso cai rau nws hloov mus rau ntau yam kev ua haujlwm: nws tuaj yeem tiv taus lub zog sab hauv mus txog 10 MPa (1450 psi) nyob rau hauv ib puag ncig qhov kub thiab txias, tswj kev ua haujlwm ruaj khov ntawm qhov kub thiab txias mus txog 1093℃(2000℃F), thiab zam lub sij hawm luv luv rau 1200℃(2192℃F). Nws kuj muaj zoo ductility thiab toughness, ua rau nws resistant rau thermal shock thiab mechanical cuam tshuam.
Q3: Dab tsi yog qhov tseem ceeb ntawm kev tiv thaiv corrosion ntawm Inconel 600 seamless raj, thiab qhov twg corrosive ib puag ncig nws tsim nyog rau?
A3: Inconel 600 seamless raj muaj npe nrov rau nws cov kev tiv thaiv corrosion, uas yog ib qho ntawm nws cov txiaj ntsig zoo. Nws muaj zog tiv thaiv intergranular corrosion, kev nyuaj siab corrosion cracking, pitting corrosion, thiab dav corrosion. Tshwj xeeb, nws yog qhov tsim nyog rau qhov chaw corrosive hauv qab no: dilute acids (xws li dilute sulfuric acid, acetic acid), alkaline tov (xws li sodium hydroxide), chloride -muaj cov xov xwm ( dej hiav txwv, brine), sulfur -muaj cov roj (hydrogen sulfide), thiab high {6} oxidestem oxides. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias nws tsis haum rau kub, concentrated nitric acid ib puag ncig, vim qhov no yuav ua rau muaj kev xeb loj ntawm lub raj.
Q4: Dab tsi yog cov ntawv thov kev lag luam ntawm Inconel 600 seamless raj?
A4: Vim nws qhov sib npaug sib npaug ntawm siab - kub stability, corrosion kuj, thiab txhua yam khoom, Inconel 600 seamless raj yog siv dav hauv ntau yam kev lag luam. Cov ntawv thov muaj xws li: 1) Petrochemical kev lag luam: cov raj xa hluav taws xob, cov khoom siv reactor, thiab cov kav dej rau cov roj refining thiab tshuaj ua haujlwm; 2) Kev lag luam tsim hluav taws xob: boiler superheater tubes, reheater tubes, thiab tshav kub exchanger raj hauv thee- raug rho tawm haujlwm, roj- raug rho tawm haujlwm, thiab nuclear fais fab nroj tsuag; 3) Marine kev lag luam: seawater txias tshuab, offshore platform pipelines, thiab shipboard khoom; 4) Metallurgical kev lag luam: kho cua sov rauv raj, annealing rauv qhov chaw, thiab molten hlau hloov pipelines; 5) Kev lag luam tshuaj: cov kav dej rau kev siv tshuaj corrosive thiab kua qaub- hauv paus cia thiab tsheb thauj mus los.
Q5: Dab tsi yog cov ntsiab lus tseem ceeb hauv kev tsim khoom ntawm Inconel 600 seamless raj kom paub meej cov khoom zoo?
A5: Cov txheej txheem tsim khoom ntawm Inconel 600 seamless raj yuav tsum nruj tswj hwm ntawm txhua qhov txuas kom ntseeg tau cov khoom zoo. Cov ntsiab lus tseem ceeb suav nrog: 1) Kev xaiv cov khoom siv raw: Siv siab -purity npib tsib xee-chromium- hlau alloy ingots uas ua tau raws li cov tshuaj muaj pes tsawg leeg yuav tsum tau ua kom tsis txhob muaj impurities cuam tshuam rau kev ua haujlwm; 2) Seamless forming: Txais cov txheej txheem kub extrusion lossis txias txheej txheem, nrog kev tswj nruj ntawm kev tsim kub thiab ceev kom ntseeg tau tias cov phab ntsa tuab thiab qhov tseeb; 3) Kev kho cua sov: Kev daws teeb meem annealing ntawm qhov ntsuas kub (1050{11}}1150 degree) thiab ua kom txias ceev kom ua kom zoo dua cov qauv nplej thiab txhim kho cov khoom siv kho tshuab thiab corrosion kuj; 4) Kev soj ntsuam zoo: Kev soj ntsuam cov tshuaj lom neeg muaj pes tsawg leeg, kev tshuaj xyuas cov cuab yeej cuab yeej, kev kuaj tsis muaj kev puas tsuaj (ultrasonic, eddy tam sim no), thiab kev ntsuas siab kom tshem tawm cov khoom puas.
