Koj pom ntau tham txog kev siv twj tso kua mis, impeller tsim, qib khoom siv. Lub casing? Feem ntau kho raws li lub tsev neeg ruam, tom qab. Qhov ntawd yog ib qho yuam kev kim heev. Hauv kev muaj tiag, lub lub twj tso kua mis yog lub nkoj siab uas muaj txhua yam, dictates cov qauv ntws, tswj kev tsim txom, thiab feem ntau dictates lub sijhawm tu. Tau txais nws yuam kev, thiab lub impeller zoo tshaj plaws hauv ntiaj teb yuav tsis cawm koj.
Lub ntsiab lus yuam kev: Nws tsuas yog Casting
Thaum engineers spec a lub twj tso kua mis, daim duab tawm mus nrog cov khoom siv specs thiab kam rau ua. Qhov kev xav yog tias lub hauv paus yuav nchuav nws, lub khw muag khoom yuav ua tiav nws, thiab nws yuav bolt txoj cai. Kev muaj tiag yog messier. Kev xaiv ntawm qhov zoo li qub cam khwb cia thiab lub plhaub pwm casting, piv txwv li, tsis yog hais txog qhov chaw tiav. Nws yog hais txog kev ncaj ncees sab hauv. Ib qho tsis zoo gated casting tuaj yeem tawm hauv qhov seem kev ntxhov siab nyob rau hauv lub caj pas. Koj yuav tsis pom nws ntawm daim ntawv tshuaj ntsuam xyuas, tab sis koj yuav hnov nws raws li kev vibration tsis tu ncua ntawm qee cov ntsiab lus ua haujlwm, ib qho teeb meem uas tau txais kev thuam ntawm rotordynamics rau lub hlis.
Kuv kawm qhov no txoj kev nyuaj ntawm lub boiler pub dej twj tso kua mis project xyoo rov qab. Cov casings tau teev nyob rau hauv duplex stainless hlau rau corrosion kuj. Lub foundry xa mus luam, visually zoo meej. Tab sis thaum lub sij hawm sim hydro-test, peb tau quaj los ntawm ib seem zoo li khoom. NDT pom cov kab noj hniav shrinkage, tsis loj txaus los ua tsis tiav qhov kev ntsuam xyuas tam sim ntawd, tab sis muaj kev lav phib xaub tsis ua hauj lwm hauv qab thermal cycling. Lub hauv paus ua rau? Lub foundry txoj kev pub mis thiab rising tsim rau qhov tshwj xeeb alloy thiab phab ntsa thickness hlws ris yog tsis txaus. Lawv tau zoo nrog tus qauv CF8M, tab sis duplex coj txawv txawv thaum lub sij hawm solidification. Qhov ntawd yog qhov nuance koj tsuas yog tau txais los ntawm tus neeg muag khoom uas nkag siab txog metallurgy ua ib feem ntawm cov txheej txheem casting, tsis yog ib lub checkbox.
Qhov no yog qhov uas lub tuam txhab qhov tob qhia. Kuv tau tshuaj xyuas cov neeg muag khoom zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY). Lawv tsom mus ntev rau plhaub molding thiab peev casting rau precision Cheebtsam, tshwj xeeb tshaj yog nyob rau hauv tshwj xeeb alloys, qhia hais tias lawv twb yuav wrestled nrog cov solidification cov kev sib tw nyob rau hauv ntau qhov project. Rau qhov tseem ceeb lub twj tso kua mis nyob rau hauv ib tug npib tsib xee-raws li alloy rau high-temperature kev pab cuam, cov txheej txheem kev paub yog dab tsi koj tab tom yuav tiag tiag, tsis yog lub machining kam rau ua.
Machining: Qhov twg theoretical ntsib lub cev
Txawm tias muaj qhov zoo tshaj plaws casting, lub machining theem tuaj yeem qhia nws tus kheej qhov ua tsis tiav. Qhov yuam kev classic yog kho lub casing raws li ib qho yooj yim workpiece yuav tsum tau clamped ntawm lub rooj CNC. Lub casing tsis nruj; Nws yog ib tug complex, nyias-walled geometry. Kev txhim kho tsis raug lossis kev txhoj puab heev tuaj yeem tso tawm qhov kev ntxhov siab hauv lub cev, ua rau qhov txav mus tom qab thawj zaug ua haujlwm. Koj xaus nrog flange ntsej muag uas tsis yog square lossis bolt qhov qauv uas drift.
Cov kab ke tseem ceeb heev. Koj puas rough tawm lub volute profile ua ntej lossis tom qab ua tiav cov flange thiab foob ntsej muag? Muaj kev sib cav. Qee tus machinists nyiam tsim cov datum nta ua ntej los ntawm lub xeev li-cam khwb cia. Lwm tus sib cav txog kev tshem tawm cov khoom ntim ntawm cov khoom siv los txo kev ntxhov siab, tom qab ntawd rov kho dua rau kev ua tiav machining. Kuv twb pom ob qho tib si ua hauj lwm thiab ob qho tib si tsis ua hauj lwm, nyob ntawm seb lub casing loj thiab geometry. Ib lub khw uas tseem ua qhov casting, zoo li QSY nrog lawv cov kev koom ua ke CNC machining muaj peev xwm, muaj qhov zoo dua qub. Lawv tuaj yeem npaj tag nrho cov txheej txheem los ntawm cov qauv theem, paub meej tias qhov yuav raug tuav thiab txiav li cas, muaj peev xwm txawm tias tsim cov hlau nplaum uas ua ob npaug li cov khoom sib dhos.
Tom qab ntawd muaj qhov tho txawv ntawm cov ncej bore thiab foob chambers. Qhov no zoo li yooj yim, tab sis concentricity thiab nto tiav ntawm no yog txhua yam rau lub neej foob. Ib qho kev sib tham uas koj tuaj yeem hnov ntxhiab nrog tus ntiv tes yuav rhuav tshem lub tshuab foob hauv lub lis piam. Tus kws kho tshuab zoo yuav muaj kev xav rau txoj hauv kev zoo, pub, thiab daim ntawv thov txias rau cov khoom sib txawv - cam khwb cia hlau, 316 stainless, los yog gummy duplex. Nws tsis yog ib qho program xwb.
Cov Khoom Siv Maze: Tshaj Stainless Hlau
Specification stainless hlau rau a lub twj tso kua mis yog xyaum tsis muaj qab hau. Puas yog tus qauv austenitic zoo li 304/316? Martensitic zoo li CA15 rau kev yaig tsis kam? Ib tug super duplex zoo li 2507 rau chloride ib puag ncig? Los yog nickel-raws li alloy zoo li Inconel 625 rau huab cua kub thiab corrosion? Txhua tus coj txawv txawv thaum lub sij hawm casting, machining, thiab hauv kev pabcuam.
Kuv nco qab txog qhov dej hiav txwv txias twj tso kua mis qhov chaw pib spec yog 316L. Nws yuav tsum tau ua haujlwm. Tab sis nyob rau hauv cov dej estuary tshwj xeeb, nrog siab chlorides thiab microbiological kev ua ub no, peb tau txais hnyav pitting thiab crevice corrosion ntawm gasket ntsej muag nyob rau hauv ib xyoos. Qhov kho yog hloov mus rau qib siab dua super duplex. Tus ntes? Super duplex yog qhov tsis txaus ntseeg tsis yooj yim rau cam khwb cia thiab kho cua sov kom raug los tswj nws cov theem sib npaug. Koj xav tau lub hauv paus uas tuaj yeem tswj tau qhov txias txias thiab kev daws teeb meem annealing. Yog hais tias lawv nco nws, koj tau txais sigma theem nag lossis daus, ua rau cov khoom tawg. Ib tus neeg muag khoom tau ntsib nrog tshwj xeeb alloys, raws li tau hais hauv QSY cov ntaub ntawv pov thawj, yuav muaj cov txheej txheem rau qhov no. Lawv yuav paub cov kab kos kho cua sov rau cov ntaub ntawv no los ntawm lub siab.
Rau cov kev pabcuam corrosive tsawg dua tab sis abrasive - xav tias slurry lossis tshauv tuav - cam khwb cia hlau nrog npib tsib xee-chrome nyuaj rau hauv cov chaw tshwj xeeb yuav yog qhov kev xaiv pragmatic. Qhov kev txiav txim siab tsis yog hais txog cov kua dej xwb; nws yog hais txog tag nrho cov nqi ntawm kev ua tswv cuab, ntsuas tus nqi pib cov khoom siv tiv thaiv qhov xav tau hnav lub neej thiab kev saib xyuas downtime.
Kev sib koom ua ke & Kev xeem tiag-Lub Ntiaj Teb
Qhov kawg pov thawj ntawm a lub twj tso kua mis yog nyob rau hauv lub skid, nyob rau hauv siab. Qhov no yog qhov twg tag nrho cov teeb meem zais nto. Ib qho mob taub hau tsis tu ncua yog gasket zaum. Flange flatness ntawm daim duab yog ib yam; ua tiav daim iav-tiav, yoj-dawb nto thoob plaws qhov loj, tsis xwm yeem casting flange tom qab machining yog lwm qhov. Kuv tau siv hnub nrog xiav dye thiab scrapers tes zaum loj casings uas leaked rau thawj hydro-test vim yog ib tug me ntsis crown nyob rau hauv nruab nrab ntawm lub flange lub ntsej muag. Niaj hnub nimno CNC milling yuav tsum tshem tawm qhov no, tab sis cov cuab yeej deflection ntawm qhov ntev mus txog lossis qhov kev ntxhov siab tseem tuaj yeem ua rau nws.
Lwm qhov kev sib koom ua ke ntawm qhov mob yog qhov haum nrog cov khoom siv sab hauv. Lub clearance ntawm lub casing hnav nplhaib thiab lub impeller hnav nplhaib yog qhov tseem ceeb. Yog hais tias lub casing bore distorts txawm me ntsis tom qab machining (dua, kev nyuaj siab nyem), los yog yog hais tias lub casing tsis txaus siab thaum bolted rau nws pedestal, qhov clearance tuaj yeem tawm ntawm spec, tua efficiency. Tej zaum koj yuav tsum tau zaum kawg-dhau lub casing nrog nws mounted ntawm nws baseplate, ib tug fussy tab sis tsim nyog kauj ruam rau loj, high-zog twj.
Qhov feem ntau qhia cov cim ntawm qhov zoo casing? Yuav ua li cas nws coj thaum lub sij hawm strip-down tom qab xyoo ntawm kev pab cuam. Ib tug zoo yuav qhia txawm hnav nyob rau hauv lub volute. Ib tus neeg pluag yuav muaj cov qauv kev yaig sib txawv, qhov cavitation hauv qhov chaw tshwj xeeb, lossis cov kab nrib pleb uas tshwm sim los ntawm kev ntxhov siab ntawm cov ces kaum sab hauv-cov ces kaum uas yuav tsum tau ua kom tiav tab sis tej zaum tsis yog vim cov qauv tsim lossis cov kev txwv hauv kev sib dhos.
Lus Nug: Lub Pob Txha Tsis Pom
Yog li, tsis yog, lub lub twj tso kua mis tsis yog lub plhaub xwb. Nws yog lub hauv paus siab ciam teb, cov lus qhia ntws, thiab feem ntau yog qhov txwv rau kev ntseeg tau. Nws qhov zoo yog qhov ua haujlwm ncaj qha ntawm kev sib koom ua ke ntawm kev txawj ntse - hauv metallurgy, casting txheej txheem tsim, kev ntxhov siab-paub machining, thiab kev paub txog kev sib dhos. Koj tsis tuaj yeem kuaj nws nrog daim ntawv txheeb xyuas yooj yim. Nws xav tau ib tus neeg muag khoom tus khub uas nws qhov kev paub dhau los ntawm tag nrho cov kev taug kev los ntawm cov hlau molten mus rau qhov kawg haum-up, hom kev sib xyaw ntsug uas ua haujlwm nrog ntau xyoo hauv casting thiab machining ib txwm tsim. Qhov sib txawv tsis tshwm sim ntawm kev yuav khoom; nws tshwm sim nyob rau hauv lub sij hawm nruab nrab ntawm kev ua tsis tiav ntawm qhov chaw, uas yog tib lub metric uas tseem ceeb tiag tiag.
