Yuav ua li cas txiav txim seb titanium cua sov raj yuav tsum tau hloov ua ke raws li ntau yam kev ntsuas ntsuas

Hauv ntau lub chaw tsim khoom, ib qho kev txiav txim siab ib leeg rau scrapping titanium cua sov raj yog txo cov phab ntsa tuab, tsis muaj kev xav txog kev zais cov kev phom sij xws li cov yeeb yaj kiab tsis ua haujlwm, vuam sab hauv cov kab nrib pleb, hydrogen embrittlement, thiab flange sealing nto puas. Kab lus no qhia txog qhov kev ntsuam xyuas dav dav uas suav nrog cov khoom siv tuab, qhov chaw tiv thaiv- kev ua haujlwm corrosion, vuam sab hauv tsis xws luag, cov khoom siv hauv tsev, thiab kev ua haujlwm tsis ua haujlwm ntau zaus. Tsis tas li ntawd, nws delineates qhov kev pheej hmoo rau hauv peb pawg: kev saib xyuas ib txwm, kev ceeb toom thaum ntxov, thiab yuav tsum hloov pauv. Nws kuj tseem muaj qhov qhia meej txog qhov kev txiav txim siab ntau yam thiab cov phiaj xwm pov tseg . 1. Index 1: Core mechanical corrosion allowance index (ultrasonic phab ntsa thickness residual rate) Cov qauv ntsuas rau xam cov seem phab ntsa thickness piv yog tus thawj tsim phab ntsa thickness. Cov chaw tseem ceeb ntawm kev tsom xam yog qhov vuam kub- thaj tsam cuam tshuam, txhawb kev sib cuag cov ntsiab lus, npuas stagnation qaum lub raj arc, thiab ntev - lub sij hawm scaling cov cheeb tsam. Kev soj ntsuam kev pheej hmoo ntawm kev nyab xeeb kev soj ntsuam cheeb tsam: qhov seem seem ntawm qhov tsawg kawg yog 70% ntawm cov phab ntsa qub pov tseg: Txuas ntxiv mus ua raws li cov txheej txheem tu vaj tse thiab kev ntsuas lub voj voog peb lub hlis twg. Kev ceeb toom thaum ntxov overhaul cheeb tsam: residual thickness tsis ntau tshaj 50% xya caum feem pua ​​ntawm cov thawj phab ntsa pov tseg: Npaj rau kev yuav khoom ntawm spare tubes rau standby; hloov lub voj voog tshuaj ntsuam mus rau txhua hli; thiab txhim kho passivation kho tom qab txhua CIP tu. Qhov seem tuab ntawm cov phab ntsa qub yuav tsum tsawg dua 50% nyob rau hauv qhov yuav tsum tau hloov chaw. Kev pov tseg: Cov nyiaj tiv thaiv corrosion rau lub raj lub cev tau mus txog, thiab muaj peev xwm ua rau hauv zos los ntawm - phab ntsa to thaum twg los tau. Nruam tag nrho -load ntau lawm kev ua haujlwm yuav tsum raug txwv, thiab lub raj lub cev yuav tsum tau hloov thaum lub sij hawm kaw lub tank tom ntej . 2. Index 2: Electrochemical passive film nto peev xwm (anti-corrosion barrier core index) Detection standard: Saturated calomel electrode, {V 2, qualified and baseline} Maximal muaj peev xwm sib txawv ntawm tib lub raj Tsawg dua lossis sib npaug li 30mV. Kev soj ntsuam kev pheej hmoo ntawm qhov chaw saib xyuas kev nyab xeeb: tsis tu ncua muaj peev xwm faib tawm, qhov muaj peev xwm saum npoo Ntau dua lossis sib npaug ntawm +150 mV Kev saib xyuas kev nyab xeeb yog tsim nyog txhua hli. Hauv zos qis- tej thaj chaw muaj peev xwm raug pom nyob rau hauv qhov chaw ceeb toom thaum ntxov, uas muaj peev xwm ntawm +120mV thiab qhov hluav taws xob ntawm +150mV. Kev pov tseg: Txhawm rau kom nrawm rau tus kheej- kho cov yeeb yaj kiab, ua kom cov pa tawm ntawm lub tank nce siab dua 6mg / L. Qhov no yuav ua ib qho tseem ceeb hydrogen peroxide chemical re-passivation kev kho mob. Thaj tsam ntawm qhov yuav tsum tau hloov pauv: Tom qab ob qhov tseem ceeb re-kev kho mob passivation, qhov muaj peev xwm tseem nyob hauv qab +120mV, nrog qhov muaj peev xwm sib txawv tsawg dua 60mV. Pov tseg: Lub titanium matrix nto tsim ib txheej xoob, unrecoverable corrosion; pitting corrosion yuav nthuav dav sai nyob rau hauv cov kua qaub- puag ncig, yuav tsum tau hloov pauv. 3. Index 3: Weld non-kev puas tsuaj rau qhov kev kuaj pom qhov tsis xws luag (pob txha nkig tsis ua hauj lwm qhov Performance index) Ua ib qho kev ntsuam xyuas penetrant thiab eddy tam sim no tshuaj xyuas kom pom microcracks, fissures, thiab undercut defects. Kev soj ntsuam kev pheej hmoo ntawm kev nyab xeeb kev soj ntsuam cheeb tsam: Linear defects, dispersed minuscule pores tsawg dua 0.2mm, los yog tsis muaj kev cuam tshuam tsis tu ncua. Periodic peb lub hlis twg defect nrhiav pom. Kev tshem tawm. Kev ceeb toom thaum ntxov overhaul cheeb tsam: Linear defects ntsuas 0.2 mus rau 0.3 mm thiab clustered me apertures pov tseg: re-passivation tom qab kho, polishing hauv zos, thiab kho argon welding theem nrab, nrog rau kev txo qis ntawm qhov tsis pom kev mus rau ob lub hlis. Qhov yuav tsum tau hloov chaw yog txhais raws li cov kab tsis xws luag uas ntau tshaj 0.3mm nyob rau hauv ntev, nkag mus rau weld fractures, thiab rov qab tawg regrowth tom qab kho. Qhov kev pheej hmoo ntawm kev tawg ntawm lub raj tam sim ntawd thiab kev nthuav dav ntawm cov kab nrib pleb raws li qhov tshwm sim ntawm thermal cycling kev nyuaj siab yuav tsum tau ncaj qha scrapping thiab hloov kev pov tseg. 4. Index 4: Hidden risk index for hydrogen embrittlement (tshwj xeeb txaus ntshai tom qab inorganic acid pickling) Kev ntsuam xyuas cov txheej txheem: Ultrasonic internal void detection 5 fractures, fractures thiab fracture descaling cov ntaub ntawv saib xyuas. Kev soj ntsuam kev pheej hmoo ntawm qhov chaw soj ntsuam kev nyab xeeb: Kev ntsuas ultrasonic tsis ua kom muaj qhov tsis muaj teeb meem sab hauv, thiab citric acid organic acid tu yog tib txoj kev ua haujlwm. Kev tshem tawm hydrogen yuav tsum tsis muaj kev kho tshwj xeeb. Pov tseg: Tom qab disassembling lub raj, ua 120 ~ 150℃cua sov txheej txheem rau 3 teev kom tshem tawm cov hydrogen sab hauv. Tom qab ntawd, rov ua dua lub ultrasonic. Dilute inorganic acid pickling yam tsis muaj ci hydrogen tshem tawm, tawg me me sab hauv tsis muaj teeb meem pom, ceeb toom ntxov overhaul cheeb tsam. Yuav tsum tau hloov chaw: Intergranular brittle fracture signals, loj- cheeb tsam sab hauv hydrogen enrichment voids pov tseg: Kev siv cov khoom no yog txwv tsis pub vim muaj peev xwm ntawm rupture rupture thiab irreversible hydrogen embrittlement kev puas tsuaj, uas tej zaum yuav tshwm sim nyob rau hauv lub tshav kub kev ntxhov siab {{65}: Indirectx ntawm corrosion ntawm lub xeev. flange sealing nto thiab kev txhawb nqa cov khoom siv hauv paus rau kev txiav txim siab: PTFE gasket qhov rov tshwm sim, flange pitting qhov deformation, lub tes tsho rwb thaiv tsev lub tes tsho splitting nrog lub hnub nyoog, thiab kev txhawb nqa txheej txheej txheej. Kev ntsuas kev pheej hmoo ntawm cov khoom siv hluav taws xob rwb thaiv tsev tsis zoo, lub flange sealing nto yog seamless, thiab tsis tshua muaj dej xau hauv thaj chaw saib xyuas kev nyab xeeb. Kev pov tseg: Kev hloov tsis tu ncua ntawm tag nrho cov rwb thaiv tsev thiab cov gaskets txhua ib nrab xyoo - xyoo. Kev ceeb toom thaum ntxov: Lub cheeb tsam sab nrauv ntawm lub flange, gasket seepage txhua 1 ~ Spliting ntawm ib feem ntawm rwb thaiv tsev lub tes tsho tom qab ob lub hlis Pov tseg: Polish lub flange sealing nto los txhim kho galvanic corrosion tiv thaiv thiab hloov tag nrho cov puas lawm cais accessories. Yuav tsum tau hloov chaw: nquag xau, sib cuag ncaj qha ntawm cov hlau raug nrog titanium raj, thiab sib sib zog nqus pitting deformation ntawm flange sealing nto uas tshwm sim tom qab ntau yam gasket hloov. Kev pov tseg: Nruam galvanic corrosion accelerates lub thinning ntawm lub raj phab ntsa. Tag nrho cov raj sib dhos yuav tsum tau hloov yog tias lub flange tau koom ua ke nrog lub raj cua sov. 6. Index 6: Cov txheej txheem kev txiav txim siab rau kev ua tsis tiav Kev txiav txim siab kom muaj nuj nqis ntawm qhov txawv txav uas tshwm sim nyob rau hauv ib lub xyoo txij nkawm raws li kev pabcuam pabcuam: Kev nyab xeeb: Tsis muaj kev tsis txaus siab rau lub xyoo, kev ceeb toom tsis zoo los yog thermal tsis ua haujlwm. rau ob lub zos pitting corrosion tsis xws luag uas tsis ua rau ib qho to. Kev hloov pauv yuav tsum tau pib los ntawm qhov tshwm sim tsawg kawg yog peb lub ntsiab lus tsis zoo corrosion nyob rau hauv ib lub sijhawm - xyoo lossis qhov tshwm sim ntawm ib qho kev tsis txaus siab ntawm kev kaw qhov kev puas tsuaj . 7. Ib txoj cai txiav txim siab uas muaj dav thiab suav nrog ntau qhov ntsuas qhov chaw ruaj ntseg suav nrog txhua qhov ntsuas. Kev ua haujlwm ib txwm yuav tsum tau khaws cia, thiab cov txheej txheem kev saib xyuas yuav tsum tau ua raws li. Lub cheeb tsam ceeb toom ntxov yog nkag los ntawm ib qho kev ntsuas, thaum lwm qhov indexes tseem tsis cuam tshuam. Nws raug nquahu kom ua lub hom phiaj kho kho thiab tswj xyuas ntawm - xyuas qhov chaw. Lub titanium cua sov raj sib dhos yuav tsum tau muab tshem tawm tsis tu ncua thiab hloov yog tias ib qho kev ntsuas tau nce mus txog qhov yuav tsum tau hloov pauv lossis yog tias ob lossis ntau qhov ntsuas tau mus txog qib ceeb toom ntxov. Cov tswv yim: Kev Ntsuas Ntsuas Tus Qauv rau Kev Saib Xyuas Kev Nyab Xeeb Kev Nyab Xeeb Kev Ceeb Toom Thaum Ntxov Kev Tshaj Tawm Txog Kev Hloov Phab Ntsa Thickness residual ratios yuav tsum muaj tsawg kawg yog 70% ntawm qhov qub thickness.50% mus rau 70% ntawm qhov qub thickness 50% ntawm qhov qub thickness hauv zos tsis tshua muaj peev xwm, (+120mV rau +150mV muaj peev xwm ntau dua, homogeneous tis) +150mVFollowing re-passivation, qhov hluav taws xob tseem nyob ntawm qhov sib npaug ntawm +120mV. Welds uas tsis xws luag: qhov tsis muaj linear defects thiab poresLinear defects ntsuas 0.2 mus rau 0.3 millimeters yog pov thawj.Linear kab nrib pleb: 0.3mm, recurrent fracture growth Hydrogen embrittlement status Tsis muaj qhov voids sab hauv; Tsuas yog organic acid cleansing yog tso cai.Inorganic acid pickling yam tsis muaj hydrogen tshem tawm, me me nyob rau hauv kab noj hniav loj- cheeb tsam hydrogen enrichment voids thiab brittle fractures Kev rho tawm accessories thiab flanges du flange, zoo li qub PTFE kev rho tawm feem ntau heev to, sib sib zog nqus flange deformation steel hlau deformation, pitting Txhua xyoo corrosion tsis ua hauj lwm Tus nqi Tsis muaj cov ntsiab lus tsis zoo corrosion . 1 rau 2 lub zos pitting qhov chaw uas tsis muaj qhov to, 3 los yog ntau dua corrosion tsis xws luag, los yog ib qho xau kaw Condensed Summary Qhov kev ntsuam xyuas ntawm titanium cua sov raj rau hloov tsis tau tsuas yog raws li cov phab ntsa thickness ntsuas. Nws yog ib qho tsim nyog los koom nrog cov yeeb yaj kiab uas muaj peev xwm ua tau zoo, kev sib txuas hauv qhov tsis xws luag, kev pheej hmoo hydrogen embrittlement, flange accessory mob, thiab txhua xyoo tsis ua haujlwm zaus txhawm rau txhawm rau ua qhov kev ntsuas ntau yam -dimensional. Muab faib peb qib rau hauv kev saib xyuas kev nyab xeeb, kev ceeb toom thaum ntxov, thiab yuav tsum tau hloov pauv raws li qhov muaj nuj nqis kom paub tseeb tias lub sijhawm hloov pauv, tiv thaiv kev tawg ntxov ntxov uas ua rau cov khoom siv khib nyiab pov tseg, thiab tshem tawm qhov tsis txaus ntshai ntawm qhov tshwm sim sai sai thiab tawg los ntawm kev hloov pauv qeeb.