Thaum cov neeg feem coob hnov 'stainless steel peev casting qhov chaw,' lawv daim duab zoo kawg nkaus ci, flawless tivthaiv. Qhov ntawd yog qhov kev lag luam duab. Qhov kev muaj tiag nyob rau hauv pem teb foundry yog kev sib tham tas li ntawm metallurgy, geometry, thiab tus nqi. Qhov kev txawj ntse tiag tiag tsis yog ua kom nws zoo nkaus li - nws yog nyob rau hauv kev twv seb cov hlau yuav ntws li cas hauv lub plhaub ceramic, qhov twg qhov shrinkage yuav nkaum, thiab qib ntawm 316L yuav coj tus cwj pwm li cas tom qab kev kho cua sov. Kuv tau pom ntau cov duab kos qhov twg tus tsim qauv tau teev nruj-tso peev txheej casting piv txwv tias nws zoo li machining, tsis paub txog cov txheej txheem muaj nws tus kheej cov cai ntawm qhov kev ua si.
Lub Plhaub Game: Ntau dua li Pwm
Wb tham txog lub plhaub. Nws yog lub plawv ntawm cov txheej txheem, thiab qhov twg ntau lub khw txiav cov ces kaum. Lub plhaub zoo tsis yog dipped slurry thiab xuab zeb. Nws yog hais txog txheej suav, stucco grit progression, thiab tswj kom qhuav ib puag ncig. Kuv nco qab ib pawg rau qee qhov chaw marine fittings qhov twg peb muaj cov av noo tam sim ntawd. Lub plhaub xav tias qhuav rau qhov kov, tab sis thaum lub sij hawm dewaxing, peb tau txais micro-cracks. Qhov tshwm sim? Kev hloov maj mam finning ntawm cov castings uas tsuas yog tshwm sim thaum lub sij hawm ntsuas siab. Qhov ntawd yog qhov ua tsis tiav uas koj tsis tuaj yeem pom ntawm qhov muag liab qab. Nws tau qhia kuv kom hwm cov kev tswj hwm huab cua ntau npaum li daim ntawv qhia metallurgy.
Qhov no yog qhov kev paub nrog cov ntaub ntawv zoo li cov stainless hlau peev casting qhov chaw rau tshuaj twj tso kua mis impellers ua ib qho tseem ceeb. Lub plhaub yuav tsum tau tiv thaiv lub thermal shock ntawm molten 17-4PH, uas yog poured ntawm ib tug txawv kub thiab coj txawv tshaj li, hais, 304. Daim ntawv qhia lub plhaub generic yuav ua rau inclusions los yog nto pitting. Koj tsim kev xav rau nws - lub suab lub plhaub ua rau thaum tapping ntawm ntau theem qhia koj ntau dua li qee phau ntawv.
Kuv tau ua haujlwm nrog cov neeg muag khoom uas khav txog automation hauv plhaub tsev. Nws yog qhov zoo rau kev sib xws ntawm cov ntawv ntim siab. Tab sis rau qhov nyuaj, qhov ntim qis-xws li lub cev lub cev kev cai nrog cov kev sib txuas hauv nruab nrab-tseem tsis muaj qhov hloov pauv rau tus kws tshaj lij kev txawj ua haujlwm los txhawb cov chaw tsis muaj zog nrog ntxiv slurry dips. Qhov ntawd yog ib qho nuance uas koj yuav tsis pom hauv daim ntawv qhia.
Khoom siv tsis yog ib daim ntawv tshwj xeeb xwb
Kev qhia txog CF8M lossis 316 stainless ntawm daim duab yog qhov pib xwb. Kev ua txhaum yog txhua yam. Rau corrosion-resistant stainless hlau peev casting qhov chaw, tshwj xeeb tshaj yog rau cov ntawv thov kev lag luam, koj xav tau kev tswj nruj dua cov ntsiab lus xws li carbon, sulfur, thiab ferrite cov ntsiab lus. Qhov sib txawv me ntsis hauv qhov sib npaug tuaj yeem tig qhov zoo kawg nkaus casting rau hauv kev npau suav phem tom qab vuam lossis raug cov tshuaj chlorides.
Peb muaj ib qhov project ib zaug rau sensor vaj tse nyob rau hauv ib tug desalination cog. Cov spec yog tus qauv 316. Peb xa dab tsi raws li tus qauv ASTM. Lawv ua tsis tau tejyam nyob rau hauv daim teb li ntawm rau lub hlis vim crevice corrosion. Zaj lus qhia? Tus qauv qib tsis txaus rau qhov tshwj xeeb, hnyav microenvironment. Peb yuav tsum tau hloov mus rau qib super duplex rau kev hloov batch. Tam sim no, thaum kuv pom daim duab kos, kuv ib txwm nug txog qhov chaw ua haujlwm tiag tiag, tsis yog cov ntaub ntawv hu xov tooj xwb.
Qhov no yog lub zog ntawm foundries uas tuav ntau yam alloys. Lub khw uas tsuas yog tus qauv stainless yuav nco qhov no. Ib qhov chaw zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog lawv cov kev paub dhau los hauv tshwj xeeb alloys zoo li cov nickel-raws li sawv daws yuav, inherently yuav muaj ntau nruj yaj thiab zoo tswj raws tu qauv. Ua hauj lwm nrog cov khoom siv dag zog yuam kev qhuab qhia uas tau txais txiaj ntsig txawm tias cov qib stainless hlau.
Kev dag ntxias ntawm As-Cast Finish
Muaj ib qho kev xav tsis zoo uas kev nqis peev casting muab kev npaj txhij-rau-siv tiav. Raws li-cam khwb cia nto tuaj yeem ua tau zoo, feem ntau nyob ib ncig ntawm 125 Ra, tab sis nws tsis tshua muaj qhov kawg. Txhua qhov sealing nto, mating lub ntsej muag, los yog qhov tseem ceeb txoj kab uas hla yuav xav tau machining. Tus nqi tiag tiag yog nyob ze-net-zoo li. Koj nyob nraum minimizing machining lub sij hawm thiab cov ntaub ntawv pov tseg.
Qhov kev sib tw yog muab cov khoom lag luam txaus nyob rau hauv qhov chaw zoo yam tsis ua rau cov casting hnyav dhau los yog tsim cov teeb meem thermal thaum lub sij hawm solidification. Kuv twb machined castings qhov twg cov Tshuag yog li ntawd uneven tias lub cuab tam chattered rau thawj txiav, qhia ib tug nyuaj chaw nyob rau hauv qab. Qhov ntawd feem ntau taw qhia rau qhov tsis sib xws ntawm qhov txias txias hauv ntu ntawm pwm. Nws yog qhov teeb meem casting uas tshwm sim nyob rau hauv lub machining theem, blurring kab ntawm ob txheej txheem.
Qhov no yog vim li cas kev koom ua ke ntawm casting thiab CNC machining nyob rau hauv ib lub ru tsev, raws li QSY cov haujlwm qhia, yog qhov zoo heev. Pab pawg machining tuaj yeem pub rov qab ncaj qha mus rau qhov chaw tsim khoom: Peb ib txwm tsoo qhov chaw nyuaj ntawm no, lossis Qhov flange no cuam tshuam thaum lub sijhawm clamping. Lub foundry tuaj yeem kho lub rooj vag lossis cov txheej txheem txias. Nws hloov cov saw khoom xa mus rau hauv cov lus rov qab.
Thaum Complexity tom qab
Kev nqis peev casting yog muag ntawm nws lub peev xwm los tsim cov duab nyuaj. Qhov ntawd yog qhov tseeb, tab sis tsis yog txhua qhov nyuaj yog sib npaug. Qhov tob, nqaim recesses yog teeb meem. Lawv tuaj yeem ntxiab slurry, ua rau lub plhaub ntim, lossis tiv thaiv cov hlau kom zoo. Kuv nco txog ib qho khoom siv uas zoo nkaus li zoo nkauj ntawm CAD qauv - lub lattice qauv hauv tsev. Zoo nkauj. Tab sis nws yog ib tug npau suav phem ntawm lub plhaub. Cov tub ntxhais ceramic xav tau yog qhov tsis txaus ntseeg. Tus nqi tawm los yog txaus ntshai.
Qee lub sij hawm, qhov ntse dua yog los ua kom yooj yim rau cov casting thiab tshuab lub complex sab hauv feature. Los yog faib ib feem rau hauv ob lub castings yuav tsum tau welded. Qhov no yuav tsum tau rov qab los nrog tus tsim qauv, uas ntau tus neeg yuav khoom tsis xav txog. Lawv xav tau cov ntaub ntawv CAD hais raws li-yog. Ib tug zoo foundry yuav pib qhov kev sib tham, txawm tias nws yuav ua rau poob qhov kev tsocai. Nws cawm txhua tus neeg los ntawm kev ua tsis tiav hauv kab.
Qhov kev sib tham tsim-rau-manufacturability (DFM) no yog qhov tseem ceeb. Nws yog qhov uas koj pom tias tus neeg muag khoom tsuas yog tus neeg txiav txim lossis tus khub tiag tiag. Ib lub tuam txhab nrog 30 xyoo nyob rau hauv casting thiab machining, zoo li hais txog QSY, muaj peev xwm tsim tau qhov kev tawm tswv yim no. Lawv tau pom dab tsi ua haujlwm thiab qhov tawg, nyiaj txiag thiab metallurgically.
Tus Nqi Tseeb: Yield yog Vaj Ntxwv
Chav tsev tus nqi ib casting yog ib tug vanity metric. Tus nqi tiag tiag yog nyob rau hauv tag nrho cov nqi ntawm qhov project, uas yog tswj hwm los ntawm kev tawm los. Tus nqi pheej yig nrog 50% tawm los vim qhov porosity lossis distortion yog qhov nyiaj. Koj them rau cov khoom seem, kev sib dhos qeeb, thiab cov khoom thauj thaum muaj xwm txheej ceev rau kev hloov pauv.
Tsim kom tau ib tug txhim khu kev qha yield tus nqi rau stainless hlau peev casting qhov chaw los ntawm kev tswj ib puas me me sib txawv: ciab txhaj tshuaj kub, plhaub ci lub sij hawm, pouring ceev, gating tsim. Nws tsis yog glamorous. Nws yog logbooks, txheej txheem tswj kab kos, thiab qee zaum, intuition. Koj pib paub txog qhov tsis hnov tsw ntawm lub plhaub uas zoo li ci rau ib qho uas tseem tuav cov dej noo.
Cov txiaj ntsig siab kuj yog hais txog kev sib txuas lus ncaj ncees. Ib tus kws tshaj lij foundry yuav qhia rau koj yog tias qhov tshwj xeeb muaj kev pheej hmoo siab rau lawv cov txheej txheem. Kuv xav hnov tias peb tuaj yeem ua qhov ntawd, tab sis peb xav kom ntxiv 0.5 hli vojvoog los txhim kho kev sau ntawm cov lus hais theem dua li hnov peb muaj 30% seem tus nqi ntawm qhov no tom qab lub cuab yeej tsim. Qhov kev ncaj ncees, yug los ntawm ntau xyoo ntawm kev ua haujlwm, yog qhov cais tus neeg koom tes ntawm tus neeg muag khoom. Nws hloov cov txheej txheem los ntawm lub thawv dub rau hauv kev sib koom tes engineering, uas yog qhov muaj nqis tiag tiag hauv kev nqis peev casting dag.
