Saib, yog tias koj xav tias steel flange tsuas yog lub nplhaib tiaj tus nrog lub qhov, koj twb nyob tom qab. Nws yog qhov kev sib tshuam, kev sib koom tes tseem ceeb ntawm cov tshuab nyob rau hauv siab, thiab tau txais qhov kev sib tuav tes tsis raug txhais tau tias xau, downtime, thiab frankly, ntau qw ntawm qhov chaw. Daim ntawv spec yeej tsis qhia tag nrho zaj dab neeg.
Cov khoom tsis yog hlau xwb
Koj tau txais daim duab hu rau a hlau flange. Okay. Tab sis nws puas yog A105? A350 LF2? 304l ua. 316? Forged los yog cam khwb cia? Qhov ntawd yog thawj qhov nkhaus ntawm txoj kev. Kuv tau pom cov haujlwm uas lawv tau xaj cov pa roj carbon steel flanges rau qhov kev pabcuam qis, tsuas yog pom lawv nkig li iav thaum kub poob. Cov ntaub ntawv qib dictates txhua yam-machinability, weldability, corrosion kuj. Ib qhov chaw zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog lawv 30 xyoo nyob rau hauv casting thiab machining, yuav tho qhov no rau koj. Lawv tsis pom ib qho thaiv ntawm cov hlau xwb; lawv pom qhov chaw ua haujlwm kawg.
Forged flanges yog mus-mus rau siab-siab ncaj ncees, lis dej ntws thiab tag nrho cov ntawd. Tab sis rau complex, ib-tawm duab los yog tej alloys, casting muaj nws qhov chaw. Qhov ntawd yog qhov chaw plhaub pwm lossis peev casting tuaj, uas QSY tshwj xeeb hauv. Koj tsis yog yuav ib lub flange xwb; koj tab tom yuav txoj kev tsim khoom.
Thiab cov alloys ... nickel-based lossis cobalt-raws li rau huab cua sov / corrosion? Tus nqi dhia yog qhov hnyav, tab sis yog li qhov tshwm sim ntawm kev ua tsis tiav. Nws yog kev txiav txim hu. Qee lub sij hawm koj ua qauv nrog cov khoom pheej yig dua zoo li 304, sim cov xwm txheej, tom qab ntawd cog lus rau cov khoom sib txawv. Nws tsis yog phau ntawv; nws yog kev tswj hwm kev pheej hmoo.
Machining: Qhov twg Tolerance tau txais tiag
Cov raw casting los yog forging tsuas yog pib dawb xwb. Cov CNC machining yog qhov uas nws dhau los ua ib qho kev ua haujlwm. Lub ntsej muag tiav (saib lub ntsej muag, lub ntsej muag tiaj tus, lub nplhaib-hom sib koom), lub qhov taub lub voj voog txoj kab uas hla, lub bore - qhov no yog qhov teeb meem microns. Ib qho khawb ntawm qhov sealing nto? Qhov ntawd yog txoj hauv kev muaj peev xwm xau. Kuv nco qab ib pawg uas cov ntsia liaj qhov rooj tau drilled rau spec, tab sis cov nto tiav yog ntxhib heev. Lub gasket tsis tuaj yeem kaw zoo. Nws dhau QA ntawm daim ntawv, tab sis ua tsis tiav hauv lub ntiaj teb tiag.
Dimensional stability yog loj, tshwj xeeb tshaj yog rau loj-inch flanges. Machining induces kev nyuaj siab. Yog tias koj tsis tuav lub clamping thiab txiav cov kab ke kom raug, ib feem tuaj yeem warp tom qab nws tawm ntawm lub txaj. Ces koj flatness ploj mus. Nws yog ib qho txuj ci ntau npaum li kev tshawb fawb. Ib lub khw nrog tob CNC machining kev paub, zoo li koj xav pom ntawm QSY txoj haujlwm, muaj kev txhim kho thiab kev paub txog kev tswj hwm qhov no. Lawv tsis yog khiav ib qho program xwb; lawv nyeem cov ntaub ntawv tawm tswv yim thaum txiav.
Tom qab ntawd muaj threading. Stud bolt qhov los yog tapped qhov? Rau qhov chaw muaj kev vibration siab, tej zaum koj yuav xav tau ib daim ntawv sib txawv los yog ib qho kev ntsuas xauv. Nws yog cov ntsiab lus me me, tsis txaus ntseeg uas cais lub flange uas ua haujlwm los ntawm ib qho uas ua rau muaj kev kaw.
Qhov Fit-Up thiab Weld Headache
Qhov no yog qhov kev tshawb xav ntsib lub vuam teeb. Txawm ib tug zoo meej machined hlau flange tuaj yeem raug puas tsuaj thaum vuam rau cov yeeb nkab. Ua ntej tshav kub, qhov kub thiab txias, kev kho cua sov tom qab vuam (PWHT) - hla txhua kauj ruam rau cov khoom tsis raug, thiab koj tau tsim ib qho chaw tsis muaj zog, nkig cua sov. Kuv tau pom qhov zoo nkauj ASTM A182 F316 flange tawg zoo li lub ncuav qab zib vim tias tus welder tsis ua raws li cov txheej txheem rau qib sib piv cov yeeb nkab.
Fit-up kis yog lwm tus neeg tua neeg uas ntsiag to. Qhov sib txawv loj dhau, thiab koj tau muab cov hlau txuas ntau dhau, uas ua rau muaj kev ntxhov siab ntau dua. nruj dhau, thiab koj tsis tuaj yeem nkag mus tau zoo. Qhov zoo tshaj plaws yog qhov sib xws, riam-ntug qhov sib txawv nyob ib puag ncig. Kev ua tiav uas yuav tsum tau npaj cov yeeb nkab kawg kom ua tau raws li qhov tseeb ntawm flange machining. Nws yog ib qho system, tsis yog ib qho kev sib cais.
Thiab cia peb tham txog lub caj dab weld piv rau slip-on. Weld caj dab (WN) yog qhov muaj zog, zoo dua rau kev faib tawm kev ntxhov siab, tab sis raug nqi ntau dua thiab nyuaj dua. Slip-on (SO) yooj yim kom haum, tab sis qhov kev sib txuas sab hauv yog ib qho kev ntxhov siab. Qhov kev xaiv tsis yog ib txwm meej-txiav. Qee lub sij hawm ntawm kev siv nyiaj nruj, tsis yog qhov tseem ceeb ntawm cov khoom siv hluav taws xob, kev swb-rau yog zoo kawg nkaus. Nws yog hais txog kev sib piv cov flange rau cov kev pabcuam, tsis yog xaiv qhov zoo tshaj plaws.
Nto Kho & Cov Lus Nug Corrosion
Koj tau txais koj cov flange machined. Puas yog ua tiav? Tsis txawm nyob ze. Rau cov pa roj carbon steel, tso nws liab qab yog thov rau xeb. Ib qho tshwj xeeb yog kub-dip galvanizing. Tab sis ntawm no yog ib tug ntxiab: galvanizing tuaj yeem ua rau muaj teeb meem loj ntawm lub ntsej muag nruj. Zinc txheej thickness txawv. Kuv tau pom cov xwm txheej uas lub galvanized flange yuav tsis sib raug zoo nrog lwm cov khoom vim hais tias lub sealing nto tsis tiaj tus. Qee lub sij hawm koj yuav tsum npog lub ntsej muag tseem ceeb lossis qhia cov txheej txheem sib txawv xws li phosphate lossis xim.
Rau stainless hlau flanges, tej zaum koj yuav xav tias koj muaj kev nyab xeeb. Tab sis yog tias lawv tau siv cov cuab yeej carbon steel hauv lub khw uas tseem tuav cov pa roj carbon steel, koj yuav muaj kev pheej hmoo ntawm cov pa roj carbon monoxide. Uas tua cov corrosion kuj. Ib lub khw muag khoom tshwj xeeb lossis cov txheej txheem tu kom huv si yog qhov tseem ceeb. Qhov no yog vim li cas cov khoom sib cais hauv ib qho chaw tseem ceeb. Lub tuam txhab tuav ntau hom alloys, zoo li cov alloys tshwj xeeb QSY ua haujlwm nrog, xav tau kev tswj hwm nruj kom tsis txhob muaj qhov sib kis no.
Tom qab ntawd muaj passivation rau stainless - tshem tawm cov hlau dawb los ntawm qhov chaw. Nws yog tshuaj da dej, yooj yim hauv lub tswv yim. Tab sis yog tias nws tsis ua kom huv si los yog yaug kom zoo, koj nyob nraum sab laug nrog ib qho chaw uas ua rau xeb ntau dua li thaum koj pib. Nws yog ib kauj ruam kawg uas koj tsis tuaj yeem them taus pheej yig tawm ntawm.
Qhov Zoo Txaus Npuag thiab Sourcing
Siab txiav cov nqi yog tas li. Koj yuav tau txais cov lus hais rau flanges uas yog ib feem ntawm tus nqi los ntawm tus neeg muag khoom tshiab. Daim duab zoo ib yam. Cov ntaub ntawv pov thawj tej zaum yuav hais tib yam. Tab sis dab ntxwg nyoog yog nyob rau hauv tus txheej txheem tswj. Puas yog kev kho cua sov ua tiav lawm? Puas yog chemistry ntawm cov yaj ntawm ntug deb ntawm qhov txwv spec? Koj feem ntau tsis paub txog thaum nws ua tsis tiav.
Tsim kev sib raug zoo nrog cov chaw tsim khoom uas tswj cov txheej txheem los ntawm yaj mus rau machining yog qhov tseem ceeb. Yog hais tias muaj teeb meem nrog lub casting porosity, lawv muaj peev xwm taug qab nws rov qab mus rau lub ncuav kub los yog pwm. Yog hais tias ib tug machined dimension yog tawm, lawv tuaj yeem tshawb xyuas cov cuab yeej hnav cav. Qhov traceability yog qhov koj them rau. Nws tsis yog ib yam khoom xwb; nws yog ntaub ntawv keeb kwm. Rau ib tug ntev-khiav tshwj xeeb zoo li QSY, tus txheej txheem tswj yog lawv cov caj qaum. Lawv cov lus qhia hais tias lawv tau nyob ntawm nws ntau dua 30 xyoo - uas txhais tau tias lawv yuav pom thiab kho txhua yam kev tsim khoom uas koj tuaj yeem xav txog.
Thaum kawg, tsis txhob quav ntsej lub ntim thiab xa khoom. Kuv tau txais flanges nrog nicked sealing nto vim lawv tsuas yog muab pov rau hauv ib lub crate ntoo yam tsis muaj kev thaiv zoo. Lub mais kawg tseem ceeb. Ib tus neeg muag khoom zoo nkag siab tias cov khoom tsis raug xa mus txog thaum nws nyob hauv koj txhais tes, npaj rau kev teeb tsa, tsis yog thaum nws tawm hauv lawv cov chaw nres nkoj.
Yog li ntawd, a hlau flange. Nws zoo nkaus li yooj yim. Tab sis txhua tus sawv cev rau cov saw hlau ntawm kev txiav txim siab - khoom siv, txheej txheem, machining, tiav - thiab kev tawg ntawm ib qho kev sib txuas tshwm sim ntawm qhov chaw, tsis yog hauv chaw ua haujlwm. Lub hom phiaj tsis zoo tag nrho; nws yog kwv yees, txhim khu kev qha kev ua tau zoo. Thiab qhov ntawd tsuas yog los ntawm kev kho nws raws li qhov tseeb-engineered interface, tsis yog khoom muag.
