Ib qho ntawm cov khoom siv feem ntau siv hauv kev lag luam thiab kev tsim kho yog hlau. Txawm tias tawm tsam keeb kwm yav dhau los ntawm cov txheej txheem fiberglass thiab cov khoom sib xyaw, nws cov kev sib txuas tshwj xeeb ntawm kev ua tau zoo tsis poob lawv qhov cuam tshuam. Txawm li cas los xij, yam xws li hlau aging, qaug zog, corrosion thiab lwm yam degradation txheej txheem txwv nws daim ntawv thov, yuam technologists nrhiav txoj hauv kev los ua kom cov qauv ruaj khov.
txheej txheem kev laus
Kev laus ntawm cov hlau alloys thiab cov ntsiab lus ntshiab yog to taub raws li kev hloov hauv lawv qhov kev ua tau zoo. Nyob rau tib lub sijhawm, cov qauv tsim thiab qhov chaw hloov pauv hauv lawv cov qauv, uas tau cuam tshuam txog kev ua haujlwm. Nws ntseeg tau hais tias cov txheej txheem ntawm cov hlau aging muaj qhov tsis zoo, txawm hais tias nws kuj ua rau muaj kev nce hauv qee qhov kev siv tau zoo thiab lub cev. Piv txwv li, lub hardness ntawm cov khoom nce, txawm tias lub brittleness kuj nce nyob rau hauv parallel. Txawm li cas los xij, qhov kev hloov pauv ntawm cov qauv sib txawv ntawm qhov kev ua tau zoo uas xav tau, piv txwv li, thaum tsim lub tsev lossis engineering project.
Lub sijhawm yog qhov ua rau muaj kev laus, tab sis tsis yog ib leeg xwb. Cov xwm txheej sab nraud tuaj yeem ua lub luag haujlwm tseem ceeb hauv cov txheej txheem no.tshwj xeeb tshaj yog tshuaj aggressive ib puag ncig uas cov khoom los rau hauv kev sib cuag. Nyob rau hauv ib txwm ua hauj lwm tej yam kev mob, ib tug qeeb mechanical aging ntawm cov hlau tshwm sim, tiv thaiv cov atoms ntawm cov khoom undergo diffusion.
Kev laus kev laus
Txij li cov txheej txheem no tsis yog ib txwm ua rau ua tiav kev ua haujlwm ntawm cov khoom muaj nqis, thiab tseem ua rau muaj kev loj hlob ntawm qee qhov zoo, kev laus siv dag zog feem ntau. Piv txwv li, cov txheej txheem no yog siv rau txhuas thiab titanium alloys thiaj li yuav ua rau kom lawv lub zog. Cov nyhuv no yog ua tiav los ntawm kev kho cua sov. Yog hais tias lub ntuj aging ntawm cov hlau tuaj yeem tshwm sim qeeb heev txawm tias nyob rau hauv ib qho chaw sov, ces cov txheej txheem dag yuav tsum tau tshwj xeeb hardening. Tab sis nws yog ib qho tseem ceeb uas yuav tsum tau coj mus rau hauv tus account qhov sib txawv ntawm cov qauv no thiab hlau tempering tshuab. Kev laus nyob rau hauv cov txheej txheem tsim tsim ua rau muaj zog ntxiv thiab lub zog, tab sis kuj tseem ua rau txo qis hauv cov ductility.
ntsuas tiv thaiv kev laus
Hauv paus ntsiab lus, cov txheej txheem no tsis tuaj yeem tso tseg. Tab sis nws yog ib qho ua tau kom qeeb nws los yog tshem tawm cov xwm txheej uas txhawb kev laus, nrog rau kev sib txawv ntawm kev ua tiav. Piv txwv li, nyob rau hauv qee qhov kev lag luam, cov hlau ntawm ib tus neeg cov qauv raug kho ib ntus nrog kev tiv thaiv kev daws teeb meem thiab polishes, uas txo qhov cuam tshuam ntawm kev ua haujlwm tsis zoo - tshuaj lom neeg, qhov kub thiab txias, mechanical, thiab lwm yam., hauvNyob ntawm seb hom qauv lossis ib feem, tib yam kev kho cua sov tuaj yeem siv tau. Welders, piv txwv li, nthuav tawm seams mus rau qhov kub thiab txias ntawm 600-650 ° C. Cov txheej txheem no zoo ib yam li hlau tempering, tab sis nws kuj txo qhov kev siv ntawm kev laus.
tshuaj tiv thaiv corrosion
Cov txheej txheem ntawm xeb yog qhov txaus ntshai dua rau cov hlau hais txog kev hloov pauv hauv kev ua haujlwm thiab lub cev zoo. Corrosion tuaj yeem tshwm sim nyob rau hauv kev cuam tshuam ntawm tshuaj lom neeg lossis electrochemical cuam tshuam ntawm cov qauv. Thiab yog tias kev laus ntawm cov hlau qeeb, ces tus nqi ntawm cov xeb tuaj yeem ua rau siab heev nyob ntawm cov xwm txheej sab nraud.
Cov txheej txheem tshuaj corrosion feem ntau tshwm sim nyob rau hauv rooj plaub uas cov hlau yog nyob rau hauv kev sib cuag nrog cov kua qaub, gaseous media, ntsev thiab alkalis. Cov no yog cov neeg txhawb nqa kev ua haujlwm zoo tshaj plaws uas ib txwm pom nyob rau hauv ib puag ncig, tab sis nyob rau hauv ntau hom. Thaum kawg, cov ntaub ntawv nkig thiab xoob ntawm thaj chaw cuam tshuam, muaj qhov uas txo cov khoom siv tau ntev.
Hluav taws xob corrosion
Nyob rau hauv rooj plaub no, muaj cov txheej txheem ntawm kev sib cuam tshuam ntawm cov khoom hlau nrog cov khoom nruab nrab electrolytic. Tawm tsam nws keeb kwm yav dhau, ib feem cuam tshuam oxidation, thiab cov kua active tivthaiv yog rov qab los. Cov txheej txheem zoo li no tuaj yeem tshwm sim ntawm cov ntsiab lus ntawm kev sib cuag ntawm cov alloys uas muaj cov nqi hluav taws xob sib txawv. Yog hais tias nyob rau hauv cov cheeb tsam no muaj ntsev los yogacid daws, ces ib tug galvanic khub yog tsim, nyob rau hauv uas lub anode muaj nuj nqi yog ua los ntawm ib lub caij nrog ib tug tsawg electrode nqi. Raws li, lub peev xwm siab ua rau cov hlau ua cathode.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias ob qho tib si kev laus thiab corrosion ntawm cov hlau tuaj yeem tshwm sim txawm tias tsis muaj zog stimulants. Rau electrochemical rusting, tsawg raug rau ib puag ncig acidic yog txaus, uas tuaj yeem muaj nyob hauv tsev. Tab sis feem ntau cov txheej txheem zoo li no raug rau lub hauv paus ntawm lub tsheb. Qhov ua rau electrochemical corrosion nyob rau hauv cov xwm txheej zoo li no tuaj yeem ua rau txhaws ntawm lub dav hlau carburetor, roj li qub, kev ua txhaum ntawm kev xaim ntawm cov khoom siv hluav taws xob, thiab lwm yam.
Corrosion ntsuas
Cov cuab yeej tiv thaiv feem ntau yog txheej txheej txheej, los ntawm qhov kev puas tsuaj ntawm cov qauv pib. Rau qhov no, tshwj xeeb coatings, xim, hmoov, enamels thiab kua roj vanish compositions yuav siv tau. Ib qho kev tiv thaiv zoo tiv thaiv kev puas tsuaj kuj yog tsim los ntawm cov txheej txheem ua ntej galvanizing ua ntej muab cov qauv lossis ib feem rau hauv kev ua haujlwm.
Kev npaj loj dua kuj muaj kev sib xyaw ua ke. Xws li kev hloov kho ntawm cov qauv, tshwj xeeb, tuaj yeem hloov qhov kev laus ntawm cov hlau, ob qho tib si nce thiab nqis. Kuj tseem muaj cov txheej txheem high-tech tshwj xeeb siv hauv kev tsim khoom thiab kev lag luam. Cov no suav nrog phaoliting, deaeration thiab gas thermal kho.
Zoo kawg
Cov txheej txheem teev tseg ntawm kev puas tsuaj thiab kev hloov pauv hauv cov qauv hlau tsuas yog ib feem ntawm cov xwm txheej uas tuaj yeem cuam tshuam cov yam ntxwv ntawm cov khoom. Ib qho chaw tshwj xeeb ntawm lawv yog nyob los ntawm kev qaug zog. Qhov no yog ib qho txheej txheem uas maj mam ua kom puas tsuaj ua rau muaj kev ntxhov siab ntau ntxiv hauv cov qauv, uas tom qab ntawd ua rau poob ntawm kev ua haujlwm. Tab sis tsis zoo li kev laus ntawm cov hlau, nws qhov qaug zog yuav luag ib txwm tshwm sim los ntawm kev cuam tshuam lub cev sab nraud.
Txhawm rau kom ntseeg tau tias tsis muaj ib qho ntawm cov txheej txheem txiav txim siab muaj qhov cuam tshuam tsis zoo rau cov qauv kev ruaj ntseg ntawm cov khoom, nws yog ib qho tsim nyog yuav tau pib ntsuas nws qhov cuam tshuam rau kev cuam tshuam ntawm qee yam. Rau qhov no, cov kws tshaj lij tsim cov txheej txheem tshwj xeeb rau kev saib xyuas cov khoom ua haujlwm, qhia txog lawv qhov tsis muaj zog thiab muaj zog kev ua haujlwm thiab lub cev zoo rau cov khoom tsim.
