Thaum koj hnov 'Incoloy tube,' thawj qhov uas tshwm sim yog feem ntau cov ntaub ntawv - cov qauv austenitic, cov nickel-hlau-chromium puag, oxidation kuj. Tab sis qhov ntawd tsuas yog qhov pib. Zaj dab neeg tiag tiag pib thaum koj tab tom sim khoov nws, txuas nws, lossis thawb nws mus rau nws qhov txwv hauv qhov chaw pabcuam qaub. Kuv tau pom ntau qhov project stumble vim lawv kho cov spec raws li lo lus kawg. Alloy tsev neeg, zoo li Incoloy 800 H los yog lus 825, muab lub moj khaum rau koj, tab sis lub raj tus cwj pwm yog dictated los ntawm nws cov keeb kwm tag nrho - los ntawm lub khw muag khoom mus rau qhov kawg kev kho cua sov. Tau txais txoj cai yog qhov twg ntau xyoo ntawm kev tsim thiab kev siv tshuab, zoo li qhov koj pom ntawm lub tuam txhab xws li Qingdao Qiangsenyuan Technology Co., Ltd.(QSY), qhov tseem ceeb.
Kev tsim khoom Nuances feem ntau saib dhau
Cia peb tham txog cov txheej txheem casting rau cov raj no, tshwj xeeb tshaj yog rau cov fittings complex los yog tuab-walled seem. Nrog peev casting, uas QSY tau ua rau ntau tshaj 30 xyoo, kev tswj hwm cov qauv nplej yog qhov tseem ceeb rau ib qho Incoloy cev. Nws tsis yog hais txog pouring lub yaj. Cov khoom siv plhaub pwm, qhov kub thiab txias ua ntej, qhov txias txias - qhov sib txawv me ntsis ntawm no tuaj yeem qhia txog micro-segregation ntawm cov ntsiab lus xws li titanium lossis txhuas hauv qib zoo li 800H. Qhov no tsis yog ib txwm tshwm sim ntawm tus qauv PMI, tab sis nws yuav haunt koj thaum muaj kev kub ntxhov, ua rau ntxov ntxov embrittlement. Kuv nco qab ib pawg ntawm manifold headers uas ua tsis tau hydro tests ntawm cov welds; tus neeg ua txhaum tau taug qab rov qab mus rau qhov tsis sib haum xeeb hauv kev nqis peev casting theem, tsim cov ntsiab lus kev ntxhov siab hauv cheeb tsam tsis muaj leej twg xav txheeb xyuas.
Tom qab ntawd muaj qhov machining. Cov neeg xav tias vim nws yog npib tsib xee alloy, koj tsuas yog pov carbide ntawm nws thiab cia siab rau qhov zoo tshaj plaws. Qhov ntawd yog txoj hauv kev nrawm rau cov cuab yeej puas thiab cov chaw ua haujlwm nyuaj. Lub stringy nti tsim ntawm Incoloy tuaj yeem ua npau suav phem. Koj xav tau kev teeb tsa nruj, lub kaum sab xis zoo, thiab kev txiav txim siab txog kev ua kom txias - qee zaum muaj dej nyab siab yog qhov tsim nyog, lwm lub sijhawm rau qee qhov haujlwm, koj yuav mus ze-qhuav kom tsis txhob muaj teeb meem. Lub hom phiaj yog ua kom tiav qhov chaw tiav yam tsis muaj kev ntxhov siab, uas dhau los ua qhov chaw pib rau kev ntxhov siab corrosion tawg tom qab. Nws yog qhov xav tias koj txhim kho, tsis yog ib yam uas koj tau txais los ntawm phau ntawv.
Tom qab-casting tshav kub kev kho mob yog lwm minefield. Kev daws annealing rau kev ntxhov siab yog tus qauv, tab sis qhov nruab nrab thiab nrawm yog txhua yam. Dej quench? Roj? yuam cua? Nws nyob ntawm ntu thickness ntawm lub raj. Ib tug tuab-walled lus 825 raj quenched dhau aggressively yuav warp los yog tawg. qeeb dhau lawm, thiab koj yuav raug carbide nag lossis daus nyob rau hauv cov qoob loo ciam teb, defeating nws lub hom phiaj tiv thaiv corrosion. Peb kawm qhov no txoj kev nyuaj ntawm qhov project geothermal, qhov twg cov hlab ua tsis tau qhov kev soj ntsuam tom qab peb xav tias yog phau ntawv anneal. Lub cub tawg load yog tuab heev, tsim tsis sib xws thermal profiles. Nws yog ib qho kev qhia kim heev hauv kev teev thiab kev tswj cov txheej txheem.
Welding: Qhov twg Theory ntsib lub teeb
Qhov no yog qhov uas cov roj hmab tau raws txoj kev. Txhua leej txhua tus hais txog kev siv cov khoom siv sib xyaw ua ke, tab sis kev npaj yog 90% ntawm kev sib ntaus sib tua. Rau ib Incoloy cev, lub ntsej muag bevel thiab sab hauv txoj kab uas hla (ID) nto yuav tsum huv si impeccably - thiab kuv tsis yog txhais hais tias so nws. Txhua qhov sib xyaw hlau los ntawm cov cuab yeej yav dhau los lossis kev tuav (sib tsoo hmoov av los ntawm cov hlau nyob ze yog cov kab mob sib kis) yuav tsim cov hlau dilution hauv lub pas dej ua ke. Qhov no tuaj yeem txo qis kev tiv thaiv corrosion ntawm thaj chaw weld, tsim kom muaj ib qho zoo meej anode rau galvanic nres hauv kev pabcuam.
Lub interpass kub tswj yog tsis-negotiable tab sis feem ntau xoob saib xyuas. Cia lub raj kub dhau ntawm kev hla dhau, tshwj xeeb tshaj yog nyob rau hauv qhov chaw txwv, tuaj yeem ua rau muaj kev loj hlob ntawm cov qoob loo ntau heev hauv thaj chaw uas muaj cua sov (HAZ). Cov cheeb tsam no tom qab ntawd dhau los ua qhov tsis muaj zog txuas, tsis tshua muaj ductile thiab feem ntau ua rau tawg nyob rau hauv thermal cycling. Kuv tau pom cov welders sim maj nrawm lub qhov (socket) weld rau ntawm lub taub me me Incoloy raj, tsis quav ntsej cov cua sov tsim, tsuas yog kom muaj qhov vuam tawg audibly thaum txias. Nws suab zoo li me me 'ping' - lub suab ntawm rework.
Rov qab purging yog lwm dogma. Rau tubing nqa corrosive xov xwm, tag nrho argon backing yog qhov tseem ceeb los tiv thaiv cov suab thaj (oxidation) ntawm ID weld hlaws. Tab sis qhov ntim thiab ntws tus nqi tseem ceeb. Siab ntau dhau thiab koj tshuab los ntawm koj cov hauv paus hla; tsawg dhau thiab koj tau txais ib qho ntxeem tau, kab mob hauv paus. Rau qhov ntev ntawm cov yeeb nkab, peb tau siv cov dej ua kua dej huv, uas cov tuam txhab tshwj xeeb hauv kev ua haujlwm thiab kev tsim khoom xws li QSY yuav paub, txuag roj thiab xyuas kom muaj kev pab cuam. Nws yog ib qho yooj yim ua kom yuam kev, tab sis tsis nco qab nws cuam tshuam tag nrho lub raj txoj kev ncaj ncees los ntawm sab hauv tawm.
Cov Khoom Xaiv Nraus
Ib qho yuam kev yog defaulting rau qib nto moo tshaj plaws, xws li Incoloy 800 H, rau kev siv kub-kub yam tsis xav txog tag nrho ib puag ncig. Yog, nws muaj zog zoo thiab carburization kuj. Tab sis yog tias ib puag ncig muaj cov kab ntawm leej faj, koj tuaj yeem tau txais txiaj ntsig zoo dua nrog cov ntsiab lus nickel ntau dua. Cov ntaub ntawv teev cov kev tawm tsam loj, tab sis cov neeg tua neeg uas ntsiag to yog cov impurities me hauv cov txheej txheem ntws. Kev soj ntsuam tsis ua hauj lwm kuv yog ib feem ntawm kev taug qab mus rau sulfidation nres ntawm 800H hlab hauv lub qhov cub hloov kho; kev soj ntsuam feedstock tau hloov me ntsis, thiab tsis muaj leej twg rov ntsuam xyuas cov khoom haum.
Tom qab ntawd muaj tus nqi-tsav kev ua si hloov pauv. Ib tug neeg pom 'nickel-based' thiab xav tias tus nqi qis dua austenitic stainless zoo li 304H yuav ua. Rau qee qhov qis-kub corrosion ua haujlwm, tej zaum. Tab sis rau qhov tseeb thermal qaug zog thiab nkag siab tsis kam, microstructure ntawm Incoloy yog qhov sib txawv. Cov txheej txheem ntxiv dag zog los ntawm aluminium / titanium ntxiv (hauv cov hnub nyoog-hardenable qib) los yog cov khoom siv ntxiv dag zog los ntawm molybdenum thiab tooj liab (hauv lus 825) tsis yog kev xaiv ntxiv xwb. Lawv yog cov khoom. Xaiv lub raj yog hais txog kev sib piv nws cov metallurgical tus kheej rau cov hom tsis ua haujlwm uas koj tab tom sim tiv thaiv.
Qhov no yog qhov kev koom tes nrog tus neeg muag khoom uas nkag siab txog cov khoom siv taug kev yog qhov tseem ceeb. Ib lub tuam txhab ua haujlwm txhua yam los ntawm lub plhaub pwm casting ntawm cov duab nyoos mus rau qhov kawg CNC machining ntawm lub raj kawg thiab flanges, zoo li QSY, muaj visibility rau tag nrho cov saw. Lawv tsis yog txiav cov tube xwb; lawv to taub yuav ua li cas lub casting porosity, yog tias muaj, cuam tshuam rau lub machined nto, los yog yuav ua li cas kho cua sov los ntawm lub zeb yuav cuam tshuam nrog ib tug tom ntej welding lag luam. Qhov kev pom holistic tiv thaiv ntau tus ntiv tes taw tom qab.
Daim Ntawv Thov Ntiaj Teb tiag tiag thiab cov ntsiab lus tsis ua tiav
Nyob rau hauv lub tshav kub exchangers, cov hlab yog cov hlab ntsha. Kuv tau ua haujlwm ntawm lub plhaub-thiab-tube units qhov twg Incoloy cev bundle tau teev kom raug, tab sis cov txheej txheem tube-rau-tubesheet weld yog ib qho kev xav tom qab. Qhov sib txawv ntawm qhov sib txawv ntawm Incoloy tube thiab carbon steel tubesheet ua rau muaj kev ntxhov siab loj heev. Koj xav tau cov ncauj lus kom ntxaws weld ib ntus, feem ntau nrog lub zog weld ua raws li lub foob weld, thiab qee zaum txawm tias qhov tawg ntawm lub raj rau hauv daim ntawv los tswj cov kev ntxhov siab. Hla cov kauj ruam no, thiab koj yuav pom cov xau ntawm cov pob qij txha hauv thawj ob peb lub voj voog thermal.
Lwm qhov hloov maj mam yog vibration-induced nkees. Inconel alloys feem ntau raug xaiv rau qhov no, tab sis Incoloy hlab ntev, tsis muaj kev txhawb nqa nyob rau hauv, hais tias, lub tshuab hluav taws xob raug rho tawm haujlwm kuj tuaj yeem raug kev txom nyem. Nws tsis yog ib txwm nyob rau hauv cov qauv tsim los kuaj xyuas acoustic vibration lossis ntws-induced vibration frequencies. Peb muaj ib rooj plaub uas ib tug bank ntawm lus 825 cov raj hauv cov khib nyiab kub boiler tsim cov kab nrib pleb ze ntawm cov kev txhawb nqa. Lub hauv paus ua rau yog lub resonant zaus teeb tsa los ntawm cov roj ntws, ib yam dab tsi yooj yim kev ntsuam xyuas tsis tau ntes. Qhov kev txhim kho muab kev txhawb nqa nruab nrab nruab nrab los hloov lub ntuj zaus - ib qho kev daws teeb meem yooj yim rau cov khoom siv metallurgical complex.
Kev tshuaj xyuas yog koj txoj kab kawg ntawm kev tiv thaiv. Dye penetrant testing (PT) yog qhov zoo rau qhov tawg, tab sis rau Incoloy tubes, tshwj xeeb tshaj yog tom qab vuam, Kuv yog tus neeg txhawb nqa ntawm eddy tam sim no kuaj (ECT) rau thaj tsam kub ntxhov. Nws tuaj yeem khaws cov subsurface anomalies thiab variations ntawm cov khoom vaj tse uas PT nco. Ultrasonic kuaj (UT) yog qhov zoo rau cov phab ntsa tuab thiab tag nrho cov tsis xws luag, tab sis teeb tsa kom raug rau cov txheej txheem ntxhib ntawm cov cam khwb cia lossis welded Incoloy tivthaiv yuav tsum muaj cov calibration blocks ua los ntawm cov khoom zoo sib xws. Siv cov txheej txheem steel thaiv ua rau koj nyeem tsis tau. Nws yog cov lus qhia tshwj xeeb uas cais QA tsim nyog los ntawm kev ua cov ntaub ntawv.
Xaus Kev xav: Nws yog txheej txheem, tsis yog khoom
Yog li, thaum koj tab tom nrhiav los yog qhia ib qho Incoloy cev, koj tsis yog yuav qhov ntev ntawm corrosion-resistant alloy. Koj tab tom yuav kev ncaj ncees ntawm tag nrho cov txheej txheem tsim khoom uas tsim nws. Kev ua haujlwm melting, qhov ntsuas qhov ntsuas, kev kho cua sov nkhaus, lub tswv yim machining, thiab cov txheej txheem vuam yog tag nrho cov ci rau hauv qhov kawg kev ua haujlwm. Koj tsis tuaj yeem tshawb xyuas qhov zoo rau hauv lub raj uas tau ua tsis zoo txij thaum pib.
Qhov no yog vim li cas keeb kwm ntawm tus neeg muag khoom tau qhia. Ib lub tuam txhab nrog cov hauv paus hniav sib sib zog nqus hauv casting thiab machining, zoo li Qingdao Qiangsenyuan Technology Co., Ltd., coj cov txheej txheem-taw qhia kev xav. Lawv tau ntsib qhov kev sib tw thaum kho cua sov, cov cuab yeej hnav thaum lub sijhawm ua haujlwm, thiab kev sib tw ua kom haum thaum tsim khoom. Qhov kev paub ntawd txhais ua cov khoom lag luam txhim khu kev qha ntau dua vim tias lawv nkag siab cov hloov pauv. Koj tuaj yeem pom lawv txoj hauv kev ua haujlwm nrog cov alloys tshwj xeeb zoo li no ntawm lawv qhov chaw, https://www.tsingtaocnc.com.
Thaum kawg, daim ntawv spec tau txais koj nyob rau hauv lub ballpark. Tab sis ua kom koj lub Incoloy tubing khiav kev ntseeg siab tau ntau xyoo los mus rau qhov gritty, kev paub txog ntawm cov khoom siv coj li cas thaum nws tsis nyob rau hauv lub zoo meej, kuaj mob. Nws yog hais txog kev cia siab txog cov teeb meem uas tsis nyob hauv daim ntawv qhia. Qhov ntawd yog qhov sib txawv ntawm lub raj uas ua tau raws li cov cai thiab lub raj uas tsuas kav ntev.
