Thaum cov neeg feem coob hnov 'qhov kub-resistant qhov chaw', lawv tam sim ntawd xav txog cov khoom qib-Inconel 718, Hastelloy X, yam ntawd. Qhov ntawd yog thawj, thiab feem ntau loj tshaj, yuam kev. Daim ntawv spec tsuas yog kab pib xwb. Qhov kev sib tw tiag tiag pib thaum koj siv cov hlau zoo li no thiab yuav tsum tig mus rau hauv cov khoom siv ua haujlwm uas muaj sia nyob tsis yog cua sov, tab sis thermal cycling, oxidation, kev ntxhov siab, thiab qee zaum muaj cua corrosive, tag nrho ib zaug. Kuv tau pom ntau qhov chaw nres tsheb vim tias qhov tsom tsuas yog ntawm daim ntawv pov thawj cov khoom siv, tsis yog nyob rau tag nrho cov kev taug kev los ntawm billet mus rau nruab ib feem.
Kev Tshawb Fawb Kev Tshawb Fawb
Cia peb tham txog casting, tshwj xeeb tshaj yog rau complex geometry. Koj tuaj yeem tsis tsuas yog ncuav cov khoom kub kub rau hauv cov pwm thiab cia siab rau qhov zoo tshaj plaws. Piv txwv li, nrog cov nickel-raws li alloys, cov qauv solidification yog txhua yam. Yog tias koj ua yuam kev, koj xaus nrog micro-shrinkage los yog kua muag kub uas yuav dhau qhov kev tshuaj ntsuam pom tab sis yuav ua tsis tau kiag li nyob rau hauv thermal stress hauv kev pabcuam. Peb tau kawm qhov no nyuaj heev xyoo dhau los ntawm lub turbine vaj tse qauv. Cov khoom siv tau zoo tag nrho ntawm daim ntawv, tab sis cov txheej txheem casting tau qhia txog qhov tsis zoo uas tsuas yog tshwm sim tom qab txog 50 lub voj voog thermal hauv kev sim - ib qho kev qhia raug nqi hauv kev tsim nyog, tsis yog cov khoom siv xwb.
Qhov no yog qhov chaw nrhiav kev paub dhau los ua tsis muaj kev sib tham. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog lawv peb lub xyoo caum hauv plhaub thiab peev casting, nkag siab qhov no intimately. Lawv lub website, tsi.com, teev lawv cov haujlwm nrog cobalt thiab nickel-based alloys. Qhov tseem ceeb tsis yog tias lawv teev nws; nws yog hais tias lawv twb presumably tsim lub rooj vag systems thiab pouring tsis ua rau cov alloys coj. Rau qhov kub-resistant, cov qauv zoo li-cam khwb cia yog koj thawj kab ntawm kev tiv thaiv. Tau txais txoj cai ntawd yuav tsum muaj kev sib xyaw ntawm kev kos duab thiab kev tshawb fawb uas koj tsuas tau txais los ntawm kev rov ua dua, feem ntau mob, sim thiab yuam kev.
Tom qab ntawd los machining. Machining qhov kub-kub superalloy yog qhov sib txawv tsiaj nyaum tag nrho. Nws tsis zoo li hlau. Cov alloys ua hauj lwm-harden sai heev. Yog tias koj lub cuab yeej txoj kev, nrawm, lossis pub tawm, koj tsis tsuas yog hnav lub cuab yeej xwb - koj tab tom hloov qhov kev ncaj ncees ntawm qhov chaw, tsim cov txheej txheem ntawm cov khoom hnyav, micro-cracked uas dhau los ua qhov taw qhia rau kev ua tsis tiav hauv qab cua sov. Kev xaiv coolant thiab daim ntawv thov siab tseem ceeb heev ntawm no los tswj cov cua sov ntawm qhov kev sib tshuam. Nws yog qhov sib npaug me me ntawm kev tshem tawm cov khoom thiab tsis ua rau lub substrate uas koj tab tom sim khaws cia.
Dab Ntxwg Nyoog hauv Daim Ntawv Thov Cov Lus Qhia
Txhais 'siab kub' yog thawj kauj ruam tseem ceeb. Puas yog 800 ° C txuas ntxiv? Los yog 1100 ° C nyob rau hauv luv luv tawg? Qhov txawv dictates txhua yam. Rau kev kub ntxhov tas mus li, oxidation kuj feem ntau dhau los ua qhov txwv. Tej zaum koj yuav xav tau ib qho kev kho deg tshwj xeeb lossis tseem xav txog lwm tsev neeg alloy. Rau cov kev siv cyclic, zoo li hauv cov tshuab pa, thermal qaug zog yog tus tua neeg. Ntawm no, cov khoom siv coefficient ntawm thermal expansion thiab nws lub zog creep yog cov hnub qub ntawm cov yeeb yam. Ib feem uas tsis txav ntau nrog cua sov tuaj yeem tawg los ntawm kev ntxhov siab.
Kuv nco qab lub valve tivthaiv rau cov tshuaj ua kab. Cov khoom siv yog tus qauv high-temperature stainless. Nws dhau tag nrho cov kev ntsuas kub-siab thawj zaug. Tab sis nyob rau hauv cov nroj tsuag tiag tiag, nws pom sai sai quenches los ntawm cov txheej txheem upsets - tam sim ntawd qhia txog cov dej txias. Qhov kev poob siab thermal ua rau cov plaub hau tawg tsis muaj leej twg xav sim. Qhov kev kho tsis yog qhov txawv txav ntau dua, tab sis ib qho kev tsim kho tshiab rau ib qho me ntsis kev zam txim rau geometry thiab hloov mus rau qib nrog zoo thermal shock kuj. Daim ntawv thov qhov ib puag ncig tiag tiag, tsis yog qhov zoo tshaj plaws ntawm daim duab kos, hais txog kev daws teeb meem.
Qhov no yog vim li cas kev koom tes nrog tus tsim khoom yog qhov tseem ceeb. Thaum koj tab tom nrhiav, koj tsis yog yuav ib feem xwb; koj tab tom yuav lawv lub peev xwm daws teeb meem. Koj yuav tsum muaj peev xwm hais tias, Qhov no yuav pom cov voj voog nrawm ntawm 950 ° C mus rau 400 ° C nyob rau hauv cov huab cua uas muaj leej faj, thiab kom lawv rov qab los nrog cov lus qhia ntawm ob qho tib si khoom thiab kev tsim khoom. Lawv cov peev txheej casting puas tuaj yeem ua tiav qhov tsim nyog nto kom txo tau qhov chaw pib tawg? Lawv CNC tom qab ua tiav puas tuaj yeem ua kom muaj kev ntxhov siab ntawm qhov chaw tseem ceeb?
Kev xaiv cov khoom siv: Ib qho kev sib npaug Pragmatic
Muaj cov hierarchy nyob rau hauv high-temperature cov ntaub ntawv, thiab tus nqi foob pob ua ntxaij nrog muaj peev xwm. Qee zaum, qhov zoo tshaj plaws ib leeg-crystal superalloy yog overkill. Ib tug zoo-tsim cam khwb cia hlau nrog cov cua txias channel yuav daws tau qhov teeb meem 700 ° C ntawm ib feem ntawm tus nqi. Qhov ua kom yuam kev yog paub qhov chaw pib. Rau ntau daim ntawv thov kev lag luam hauv 700-1000 ° C, cov nickel-based alloys zoo li Inconel 625 lossis 718 yog cov neeg ua haujlwm. Lawv muaj qhov sib npaug zoo ntawm lub zog, oxidation tsis kam, thiab fabricability.
Tab sis txawm nyob rau hauv qhov ntawd, koj muaj kev xaiv. Wrought vs. cast? Rau cov duab nyuaj, casting feem ntau yog tib txoj kev siv tau. Ib tus kws tshaj lij zoo li QSY, muab ob qho tib si peev casting thiab tom qab ntawd CNC machining, muab kev txuas ntxiv. Lawv tuaj yeem tsim qhov ze-net-puab nyob rau hauv ib qho kev ua tau zoo alloy los ntawm kev casting thiab tom qab ntawd tshuab qhov tseem ceeb sealing nto los yog ntsia liaj qhov rooj qhov nrog precision, tswj cov khoom ruaj ntseg los ntawm tag nrho cov saw. Qhov kev tswj hwm kev sib koom ua ke no yog qhov zoo dua - koj zam qhov kev pheej hmoo ntawm lub khw muag khoom uas tsis muaj kev paub hauv superalloys rhuav tshem qhov zoo kawg nkaus casting.
Ib qho uas feem ntau tsis saib xyuas yog kev kho vuam. Puas muaj kev kho kho rau ntawm qhov casting? Rau qee qhov tseem ceeb rotating qhov chaw, tsis yog kiag li. Rau cov khoom siv zoo li qub nyob rau hauv lub cub tawg, tej zaum nws tau txais. Qhov kev txiav txim siab no yuav tsum tau ua ua ntej nrog lub hauv paus, vim tias nws cuam tshuam li cas lawv tsim nyog rau qhov thiab cov qauv tshuaj xyuas lawv siv li cas. Nws yog qhov ua tau zoo, kev txiav txim siab hauv ntiaj teb uas muaj qhov cuam tshuam loj rau tus nqi thiab lub sijhawm ua haujlwm.
Kev tshuaj xyuas thiab qhov tsis pom qhov tsis zoo
Kev tswj kom zoo rau qhov kub thiab txias tsis tuaj yeem nres ntawm qhov ntsuas qhov ntsuas. Dye penetrant testing yog tus qauv rau qhov tsis xws luag. Tab sis rau kev ncaj ncees sab hauv, tshwj xeeb tshaj yog rau cov khoom muaj kev ntxhov siab, kev kuaj hluav taws xob (X-ray) feem ntau yog qhov tseem ceeb. Nws rov qab los rau qhov ntawd thawj zaug txog cov txheej txheem casting. Koj tab tom txheeb xyuas tias qhov kev tsim cov txheej txheem tsim lub suab sab hauv. Qhov no tsis yog thaj chaw los txiav cov ces kaum. Ib qho kev tsis txaus siab uas koj nco ntawm no yog qhov ua tsis tiav ntawm qhov chaw tos kom tshwm sim, nrog rau txhua qhov kev poob qis thiab cuam tshuam txog kev nyab xeeb uas coj mus.
Qee zaum, koj yuav tsum mus ntxiv. Rau ib qhov project tsis ntev los no uas muaj qhov kub-kub manifold, peb tau teev tseg tsis yog RT xwb, tab sis kuj kuaj metallographic ntawm cov qauv kev txi txi ntawm tib lub tshav kub. Peb yuav tsum tau xyuas cov qoob loo loj thiab saib rau cov theem tsis zoo uas yuav tau tsim thaum lub sij hawm khov. Nws ntxiv sijhawm thiab tus nqi, tab sis nws yog tib txoj hauv kev kom ntseeg siab rau daim ntawv thov uas tsis muaj paj rau qhov yuam kev. Lub foundry, yog tias lawv muaj kev paub dhau los, yuav tsum nkag siab qhov no thiab tuaj yeem ua kom haum lossis txawm hais txog cov kauj ruam no.
Thaum kawg, xav txog qhov tiav. Ib qho ntxhib, zoo li-cam khwb cia saum npoo tuaj yeem ua qhov hotspot rau oxidation thiab tawg pib. Feem ntau, ib qho yooj yim iav-pob zeb moj tej tawg los yog ib tug tshwj xeeb pickling txheej txheem yuav ho txhim kho nto oxidation kuj los ntawm tsim ib tug ntau yam, kev nyuaj siab-relieved txheej. Nws yog ib qho me me, cov kauj ruam kawg uas ua rau cov khoom siv muaj txiaj ntsig zoo dua.
Xaus Kev xav: Nws yog qhov system, tsis yog ib feem
Yog li, rub qhov no rov qab ua ke. Sourcing ib tug txhim khu kev qha high-temperature resistant ib feem yeej tsis yog ib daim ntawv xaj khoom xwb. Nws yog kev sib koom tes. Nws pib nrog kev ua siab ncaj ncaj rau daim ntawv thov, txav mus los ntawm cov khoom siv pragmatic thiab cov txheej txheem xaiv (qhov chaw uas cov tuam txhab muaj peev xwm sib sib zog nqus zoo li casting thiab machining ci), thiab tau lees paub los ntawm cov txheej txheem tshuaj xyuas uas phim qhov kev pheej hmoo.
Lub hom phiaj yog kom xaus nrog ib feem uas tsis yog ciaj sia xwb, tab sis ua tau zoo rau nws lub neej npaj. Qhov kev kwv yees tau los ntawm txhua qhov txuas hauv cov saw hlau - los ntawm lub khw muag khoom mus rau qhov zoo kawg nkaus stamp. Nws yog tsawg dua txog kev nrhiav cov khoom siv khawv koob thiab ntau ntxiv txog kev ua tiav cov pov thawj, tswj cov xwm txheej los tsim cov khoom siv rau hauv ib yam dab tsi koj tuaj yeem nyob ntawm seb thaum tshav kub kub, qhov tseeb. Qhov sib txawv ntawm ib feem uas ua haujlwm thiab ib qho uas tsis ua haujlwm feem ntau yog nyob rau hauv cov gritty, unglamorous cov ntsiab lus ntawm kev tsim thiab validation uas yeej tsis ua rau lub glossy daim ntawv.
