Kev Xaiv Cov Yeeb Nkab Stainless Hlau Rau Cov Ntaub Ntawv Chaw Ua Kua Dej Txias: Vim Li Cas Siab -Kev Ua Haujlwm Kev Ua Haujlwm Zoo Tshaj Plaws rau 316L dua li 304?
Thaum pib ntawm lub xyoo tas los, peb tau txais kev hu xov tooj los ntawm lub chaw muab ntaub ntawv sib koom ua ke hauv Oslo, Norway, nrog lub suab ntxhov siab. Lawv nyuam qhuav tau xa ib qho kev xam phaj ntawm ntug hiav txwv. Tsuas yog 14 lub hlis tom qab nws xa mus, thaum lub sijhawm tshuaj xyuas niaj hnub, nws tau pom tias lub siab sab hauv ntawm CDU (Cooling Distribution Unit) yog qhov txawv txav. Tom qab disassembled thiab tshawb xyuas, tus neeg ua txhaum tau pom tias yog 304 stainless hlau piping uas yog Ameslikas pom tias "tsim" - nyob rau hauv kev sib xyaw ua ke ntawm cov dej hiav txwv ntsev pos yaig thiab ntev - lub sij hawm ntws los ntawm cov dej txias, ib qho tseem ceeb pitting perforation tshwm nyob rau hauv ib lub tshav kub cuam tshuam cheeb tsam, ua rau ib tug loj qhov chaw ntawm weld seam. xwm txheej. Qhov kev hu no tau cim qhov pib ntawm peb plaub- xyoo kev koom tes nrog cov neeg siv khoom no, thiab nws kuj tau lees paub tias yog vim li cas hauv cov dej txias txias, 316L tau hloov pauv tag nrho 304.
Tus neeg siv khoom qhov kev xaiv thawj zaug no tsis yog qhov xwm txheej cais. Ntau pawg engineering, hauv kev sib zog los txo cov nqi tsim kho thawj zaug, nyiam siv 304 stainless hlau hauv cov kav dej thib ob. Txawm li cas los xij, qhov corrosive ib puag ncig ntawm cov kua cua txias yog qhov nyuaj dua li qhov xav tau. Txawm hais tias cov dej deionized siv, raws li lub kaw lus ua haujlwm, qhov kev tiv thaiv tsis tau hloov pauv, thiab cov kab mob ntawm cov chloride ions yaj hauv dej pib siv zog; yog tias nws yog dej -ethylene glycol tov, thaum lub sij hawm siab -kub ncig, nws yuav degrade thiab tsim cov organic acids. Tom qab peb pab neeg ua haujlwm tau cuam tshuam thiab tshuaj xyuas, nws tau tshawb pom tias qhov tsis txaus ntseeg ntawm qhov project no nyob hauv "weld corrosion": Cov khoom siv 304 muaj cov ntsiab lus carbon ntau dua. Thaum lub sij hawm vuam, qhov kub thiab txias ua rau chromium carbide los nag ntawm cov ciam teb, tsim "tsis zoo chromium" thaj chaw, ua rau cov weld seam thiab cov cheeb tsam uas nyob ib sab yog qhov tsis muaj zog tshaj plaws thiab qhov tsis zoo ntawm tag nrho cov kav dej ua ntej.
Txhawm rau daws qhov teeb meem no, peb pom zoo rau cov neeg siv khoom cov khoom tseem ceeb - lub316L qis- carbon stainless hlau kua- cov yeeb nkab txiasRaws li ASTM A269 tus qauv. Piv nrog rau 304, qhov txiaj ntsig tseem ceeb ntawm 316L yog qhov sib ntxiv ntawm 2%-3% ntawm molybdenum (Mo) thiab kev tswj nruj ntawm cov ntsiab lus carbon hauv qab 0.03%. Qhov sib ntxiv ntawm molybdenum ho nce cov khoom siv corrosion kuj rau pitting (PREN> 24), tshwj xeeb tshaj yog hais txog kev pheej hmoo ntawm perforation los ntawm chloride ions; thaum lub "L" qib qis- cov cuab yeej carbon hauv paus tshem tawm cov kev cuam tshuam ntawm intergranular nyob rau hauv qhov chaw vuam cua sov. Xav tias qhov project no yog nyob rau hauv ib cheeb tsam nrog ib puag ncig ntawm ntug hiav txwv dej, huab cua huab cua siab thiab cov ntsiab lus ntsev siab, peb pom zoo kom cov neeg siv khoom hloov tag nrho cov kav dej nrog 316L cov khoom thiab ua kom nruj acid ntxuav thiab passivation kev kho mob ntawm tag nrho cov welds los tsim kho cov tshuaj tiv thaiv barrier ntawm lub raj xa dej.
Tom qab txoj kev npaj tau txiav txim siab, peb lub hauv paus tsim khoom hauv Suav teb tau teb sai. Ua tsaug rau cov khoom lag luam loj uas peb ib txwm muaj ntawm tes, peb tau xa tam sim ntawd316L precision welded kavntawm ob qhov tshwj xeeb, Φ22mm thiab Φ42mm. Tsis zoo li cov kav dej zoo tib yam, cov kua - cov kav dej txias uas peb muab rau cov neeg siv khoom no tau ua tiav cov txheej txheem sab hauv phab ntsa electrolytic polishing, nrog rau qhov roughness tswj ntawm Ra tsawg dua lossis sib npaug li 0.8 μm. Qhov no tshem tawm tag nrho cov hlau dawb thiab oxides ntawm phab ntsa sab hauv, kom ntseeg tau tias tsis muaj cov khoom puas yuav poob thiab thaiv cov micro- ntws raws ntawm cov phaj txias hauv kev ua haujlwm yav tom ntej. Nyob rau tib lub sijhawm, kom ua tau raws li qhov xav tau sai ntawm - qhov chaw teeb tsa, peb tau muab cov kev pabcuam ruaj khov -ntev txiav thiab cov yeeb nkab kawg hau, kom ntseeg tau tias cov khoom siv yeeb nkab tseem huv heev thaum tuaj txog. Los ntawm tau txais qhov kev txiav txim mus thauj cov thawv rau kev xa khoom, tag nrho cov txheej txheem tsuas yog siv sijhawm 72 teev.
Txoj haujlwm hloov pauv tau ua tiav hauv ib lub lis piam. Tam sim no, qhov no system, uas yog tag nrho ua los ntawm Tuam Tshoj Super Tech 316L stainless hlau kua txias kav, tau ua haujlwm ruaj khov hauv Norwegian data center rau ntau tshaj 15 lub hlis. Nyob rau lub sijhawm no, tus neeg siv khoom tau ua ntau yam rov- kev tshuaj xyuas, thiab cov phab ntsa sab hauv ntawm cov kav dej tseem du zoo li ua ntej, tsis muaj cov cim ntawm corrosion ntawm vuam seams, thiab cov hluav taws xob conductivity ntawm cov dej txias tseem nyob hauv qhov zoo tagnrho. Hauv kev mus ntsib tsis ntev los no, tus neeg siv khoom tau hais tias: "Qhov xwm txheej ntawd tau ua rau peb tau nyiaj ntau heev. Tam sim no zoo li xaiv koj cov khoom lag luam -full 316L yeeb nkab khoom, txawm tias tus nqi siab dua me ntsis, tau cawm peb cov nqi poob qis thiab lub koob npe poob. Qhov no yog qhov zoo rau cov nyiaj."
Cov ntaub ntawv no tsis yog ib qho piv txwv cais. Nws qhia txog qhov kev xaiv uas tsis tuaj yeem nyob hauv lub sijhawm tam sim no ntawm siab - suav lub zog. Txawm hais tias nws yog dej deionized, dej glycol, los yog cov khoom siv tshwj xeeb uas nrov tshaj plaws, cov kev ntsuam xyuas ntawm cov kav dej tau nce ntxiv.Tuam Tshoj Super Tech Co., Ltd.,leveraging nws nyob rau hauv - tswj qhov tob tshaj 316L thiab 304L stainless steel kua txias kav, raws li zoo raws li nws tag nrho - cov khoom muag npog Φ6mm mus rau Φ108mm, yog muab "tsuas yog-nyob rau hauv-lub sij hawm" ib- nres kev pab cuam rau cov neeg siv khoom thoob ntiaj teb. Peb tsis tsim cov coolant, tab sis peb xyuas kom meej tias txhua nti ntawm cov yeeb nkab nqa cov coolant zoo li pob zeb. Thaum koj qhov project center cov ntaub ntawv tom ntej ntsib teeb meem corrosion, tej zaum koj yuav xav xa mus rau qhov kev paub ntawm tus neeg Norwegian no - xaiv cov khoom siv txhais tau tias xaiv lub sijhawm ua haujlwm ntev tshaj plaws.
Tiv tauj peb kom tau txais qhov zoo tshaj plaws cov ntaub ntawv chaw ua kua dej txias rau koj.
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