Txoj Kev Ua Txheej Txheem Tshiab Txhim Kho Kev Tiv Thaiv Kev Ua Haujlwm ntawm Titanium Alloy rau Marine Shipbuilding thiab Maintenance
Nyob rau hauv lub cheeb tsam ntawm marine shipbuilding thiab txij nkawm, lub nkoj Cheebtsam yog raug rau huab cua ua hauj lwm tej yam kev mob, tshwj xeeb tshaj yog cov kev sib tw ntawm high-temperature ablation, uas ho txwv lawv lub neej kev pab cuam. Tsab ntawv xov xwm no qhia txog cov txheej txheem kev ua haujlwm hauv av txhawm rau txhawm rau txhawm rau tiv thaiv ablation hauv titanium alloy cov ntaub ntawv los ntawm kev kho deg thiab chromium txheej. Los ntawm kev ua cov kev sim laser ablation uas ua raws li qhov chaw ua haujlwm ntawm cov nkoj, peb delve rau hauv qhov cuam tshuam ntawm txoj kev ua haujlwm ntawm cov khoom ntawm titanium alloy thiab nws cov txheej txheem chromium.
Nrog rau kev nce qib tsis tu ncua ntawm marine engineering thev naus laus zis, kev ua tau zoo ntawm cov khoom siv nkoj tau dhau los ua nruj. Titanium alloy, renowned rau nws superior txhua yam khoom thiab corrosion kuj, tuav ib tug tseem ceeb txoj hauj lwm nyob rau hauv shipbuilding. Txawm li cas los xij, qhov teeb meem ntawm qhov kub-kub ablation nyob rau hauv marine ib puag ncig tseem yog ib qho teeb meem uas cuam tshuam rau nws txoj kev siv dav. Txhawm rau daws qhov kev sib tw no, peb tau txais kev siv thev naus laus zis los kho titanium alloy thiab coated nrog chromium, yog li txhim kho nws cov ablation tsis kam.
Txheej txheem txheej txheem thiab kev npaj cov khoom
Titanium Alloy Substrate Processing: Siv precision hlau txiav tshuab, titanium alloy raw cov ntaub ntawv raug txiav rau hauv cov qauv loj (2 cm x 1 cm x 0.5 cm). Tom qab ntawd, cov khoom siv tau raug grinded nrog 1500-grit sandpaper, polished rau ib daim iav tiav siv cov tshuaj txhuam hniav, thiab thaum kawg ntxuav ntawm ultrasonic nthwv dej kom tshem tawm cov impurities saum npoo, ua kom lub ntsej muag pristine tiav.
Chromium Txheej Daim Ntawv Thov: Cov txheej txheem arc ion plating siab heev tau ua haujlwm los tso cov chromium txheej rau cov qauv titanium alloy npaj. Los ntawm kev tswj hwm lub tshuab nqus tsev (6 × 10^{2}} Pa), qhov kub thiab txias (300 degree), NH3 siab (2-3 Pa), thiab qhov tsis zoo ntawm qhov hluav taws xob (800-1000 V), ib qho kev sib xws thiab ntom chromium txheej tau tiav, nrog rau lub sij hawm tso nyiaj los ntawm 10 mus rau 20 feeb.
Laser Ablation Experiments thiab Kev Tshawb Fawb Txog Kev Tshawb Fawb
Txhawm rau ntsuas qhov ablation tsis kam ntawm cov txheej txheem titanium alloy thiab chromium txheej, cov kev sim laser ablation tau ua. Kev siv lub tshuab ua haujlwm ntev-mem tes laser (qauv FLK-TIX6409Hz), peb simulated cov txheej txheem ablation nyob rau hauv qhov kub thiab txias los ntawm kev kho cov mem tes zog thiab suav.
Cov txiaj ntsig tau pom tau pom tias qhov tsis tau kho titanium alloy substrate tau nthuav tawm tob ablation craters nrog ntau cov kab nrib pleb hauv cheeb tsam nruab nrab, nrog rau cov oxide tuab ntawm cov npoo. Nyob rau hauv sib piv, lub chromium-coated titanium alloy nto tso saib superior ablation kuj nyob rau hauv zoo tib yam tej yam kev mob, featuring ntiav ablation craters, txo cov tawg tawg, thiab tsawg kawg nkaus oxide accumulations.
Los ntawm kev tshuaj ntsuam xyuas electron microscopy (SEM) thiab lub zog-dispersive X-ray spectroscopy (EDAX), micro-topography thiab compositional tsom xam ntawm ablated nto tau ua. Cov kev soj ntsuam no tau lees paub tias cov txheej txheem chromium zoo tiv thaiv cov titanium alloy substrate los ntawm kev tawm tsam ncaj qha los ntawm cov pa oxygen kub, txo qis cov tshuaj tiv thaiv oxidative thiab txhim kho cov khoom siv tag nrho ablation tsis kam.
Xaus thiab Outlook
Txoj kev tshawb no tau ua tiav kev txhim kho kev tiv thaiv kev ua haujlwm ntawm titanium alloy thiab nws cov chromium txheej los ntawm txoj kev ua haujlwm tshiab. Cov txiaj ntsig ntawm kev sim ua kom pom lub luag haujlwm tseem ceeb ntawm cov txheej txheem chromium hauv kev tiv thaiv titanium alloy substrate tiv thaiv qhov kub thiab txias ablation, yog li txuas ntxiv kev pabcuam lub neej ntawm cov khoom hauv nkoj. Cov kev tshawb fawb yav tom ntej tuaj yeem tshawb nrhiav qhov cuam tshuam ntawm cov txheej txheem sib txawv ntawm cov txheej txheem kev ua haujlwm ntawm txheej txheej thiab txhim kho cov ntaub ntawv tiv thaiv txheej txheem ua tau zoo ntxiv kom tau raws li qhov xav tau ntawm cov khoom ua tau zoo hauv kev tsim khoom hauv nkoj.
