Thaum cov neeg siv nug txog cov nqi xuab zeb casting, thawj qhov kuv qhia lawv yog kom tsis nco qab tus nqi ib-kilo uas lawv tau pom hauv online. Qhov ntawd yog tus ntxiab loj tshaj plaws. Tus nqi tiag tiag tsis yog qhov hnyav ntawm cov hlau xwb; Nws yog txhua yam uas tshwm sim ua ntej cov hlau molten txawm kov cov xuab zeb. Kuv tau siv ntau xyoo hauv cov chaw tsim khoom, thiab cov ntawv sau cia uas tuaj hla kuv lub rooj feem ntau nco cov tsav tsheb zais. Nws tsis yog hais txog kev nrhiav tus pheej yig tshaj plaws, nws yog hais txog kev nkag siab txog qhov koj them rau. Cia peb tawg nws los ntawm tus qauv nce.
Qhov nyiaj tiag mus: Nws pib nrog tus qauv
Txhua tus neeg tsom mus rau cov khoom siv - cam khwb cia hlau, hlau hlau, hlau. Tab sis tus qauv tus nqi yog qhov ntsiag to pob nyiaj tua neeg, tshwj xeeb tshaj yog rau cov ntim qis. Ib qho yooj yim ntoo qauv rau ib qho khoom vaj khoom tsev? Tej zaum tswj tau. Tab sis yog tias koj xav tau qhov kev ruaj ntseg rau 500 daim, koj tab tom saib ntawm cov qauv hlau machined. Qhov ntawd yog tsib lub peev nyiaj ua ntej koj tau ua ib feem. Qhov kev xaiv ntawm no dictates txhua yam: pwm zoo, lub kaum sab xis, lub peev xwm rau undercuts. Tau tus qauv tsis raug, thiab koj tus nqi ib-ntu skyrockets vim yog phau ntawv kho qhov xav tau ntawm txhua qhov casting. Kuv twb pom tej yaam num uas tus qauv nqi tshaj tag nrho cov nqi casting rau thawj batch. Nws yog tus nqi peev uas yuav tsum tau txiav tawm, thiab tsis yog txhua tus neeg muag khoom tau pob tshab txog qhov ntawd.
Tom qab ntawd muaj cov core boxes. Yog tias koj qhov chaw muaj kab noj hniav, koj xav tau cores. Txhua tus tub ntxhais xav tau nws lub thawv los tsim cov xuab zeb duab. Ntau qhov nyuaj = ntau lub thawv = ntau cov cuab yeej ua ntej. Qhov no yog qhov chaw ua haujlwm nrog ib tus neeg muaj kev paub dhau los nyiam Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) ua qhov txawv. Nrog rau lawv 30 xyoo hauv casting, lawv paub yuav ua li cas los tsim cov qauv thiab cov thawv tseem ceeb rau kev tsim khoom, feem ntau qhia txog kev hloov me me uas txo cov cuab yeej nyuaj yam tsis muaj kev cuam tshuam rau kev ua haujlwm. Nws yog lub hauv ntej-kawg engineering uas tswj lub back-end xuab zeb casting nqi.
Cov khoom siv rau tus qauv tseem ceeb heev. Rau kev khiav ntev, hlau yog tib txoj kev. Tab sis kuv ib zaug thawb rau tus qauv epoxy rau nruab nrab khiav ntawm stainless hlau valve lub cev, xav tias peb yuav txuag tau. Kev txav tsis zoo. Lub tshav kub thiab kev puas tsuaj los ntawm cov xuab zeb silica hnav cov qauv los ntawm lub voj voog 100th, qhia txog kev hloov pauv uas ua rau cov khoom seem. Qhov xav tias txuag tau tshem tawm los ntawm kev tsis lees paub. Zaj lus qhia? Tsis txhob pheej yig tawm ntawm tooling. Tus qauv yog lub hauv paus ntawm koj tus nqi tag nrho.
Cov Neeg Ua Phem Txhaum Cai: Yield thiab Tiav
Yield yog qhov qias neeg ntawm xuab zeb casting nqi. Koj xaj 100 kg ntawm castings, tab sis koj yuav tsum ncuav 150 kg ntawm molten hlau. Vim li cas? Lub rooj vag kaw lus thiab risers-cov kab uas pub hlau rau hauv pwm kab noj hniav-yog ib feem ntawm qhov hnyav hnyav tab sis raug txiav tawm thiab rov ua dua tshiab. Cov txiaj ntsig yog qhov feem pua ntawm qhov hnyav hnyav uas dhau los ua qhov kawg xa khoom. Ib qho nyuaj, nyias-walled feem yuav muaj 50% lossis tsawg dua. Yog li, koj cov nqi khoom siv tau zoo dua ob npaug. Cov neeg muab khoom nrog cov txheej txheem tswj tsis zoo muaj cov txiaj ntsig qis dua, thiab koj them cov khoom pov tseg ntawd.
Qhov no yog qhov txheej txheem kev txawj ntse cais cov khw. Lub chaw tsim khoom uas ua kom zoo tshaj qhov tsim qauv thiab siv simulation software tuaj yeem thawb cov txiaj ntsig siab dua. Kuv nco qab txog ib qhov project rau cov hlau ductile loj mounting bracket ntawm QSY. Lawv cov engineers redesigned lub rooj vag, txav los ntawm ib txwm sab saum toj-gate mus rau ib tug tswj hauv qab-fill system. Nws nce tawm los ntawm 58% mus rau 72%. Ib qho kev hloov pauv ntawd poob rau xuab zeb casting nqi los ntawm ze li ntawm 8% ntawm cov khoom siv ib leeg. Nws tsis yog khawv koob; Nws yog siv metallurgy thiab dej dynamics.
Tom qab ntawd los ua tiav. Ntau npaum li cas CNC machining xav tau? Xuab zeb casting muab rau koj nyob ze-net zoo, tab sis qhov chaw tseem ceeb ib txwm xav tau machining. Txhua millimeter ntawm cov khoom lag luam uas koj tso rau kev ua haujlwm yog cov hlau ntxiv uas koj them rau cam khwb cia, tom qab ntawd ntxiv sijhawm koj them rau txiav tawm. Kuv tau sib cav nrog cov neeg tsim qauv rau ntau teev dhau los ntxiv 1mm machining nyiaj pub rau ntawm lub ntsej muag tsis tseem ceeb piv rau qhov qhia txog qhov ua tiav. Ntawd 1 hli thoob plaws thaj tsam loj ntxiv qhov hnyav, txo cov khoom tawm, thiab ua kom lub sijhawm ua haujlwm. Nws yog ib tug cascade ntawm cov nqi. Qhov kev coj ua zoo tshaj plaws yog xaiv cov kev ua haujlwm nkaus xwb raws li cov chaw ua haujlwm. Cia lub casting yog casting nyob txhua qhov chaw.
Volume thiab Geometry: Kev sib raug zoo tsis yog kab
Tus nqi tsis ntsuas linearly nrog ntim. Thawj 100 daim yog qhov kim tshaj plaws vim lawv nqa tag nrho lub nra ntawm tus qauv thiab teeb tsa. Tus nqi nkhaus flattens dramatically tom qab ob peb puas daim, raws li koj tsuas yog npog cov nqi sib txawv xws li hlau, lub zog, thiab kev ua haujlwm rau molding. Tab sis muaj lwm lub pob tsuas: geometry. Ib qho yooj yim, blocky zoo yog pheej yig rau pwm thiab core. Ntxiv ib pawg ntawm sab hauv tav, nyias phab ntsa nyob ib sab ntawm cov ntu tuab, lossis nruj kam rau ua raws li qhov loj me, thiab koj tab tom thov teeb meem.
Thick seem txias maj mam, ua rau shrinkage porosity. Nyias ntu txias ceev. Muab lawv ua ke, thiab koj tsim cov ntsiab lus kev ntxhov siab thiab kua muag kub. Lub foundry ces yuav tsum tau ntxiv chills (hlau ntxig rau hauv cov xuab zeb) los yog tshwj xeeb risers los tswj solidification, uas ntxiv zog thiab complexity. Kuv kawm qhov no txoj kev nyuaj nrog lub twj tso kua mis tsim tsev. Peb muaj 3 hli flange ib sab ntawm 25mm mounting tus thawj coj. Lub casting cia tawg. Txoj kev daws teeb meem yog ntxiv cov fillet thiab hloov maj mam, uas pab pawg tsim qauv pib tawm tsam rau qhov zoo nkauj. Peb tau ua nws lawm, cov kab nrib pleb nres, thiab tus nqi poob vim qhov tsis lees txais tus nqi poob qis. Qee zaum, kev tsim qauv rau cov txheej txheem yog qhov kev txuag nyiaj loj tshaj plaws.
Qhov no yog tus nqi ntawm cov khw sib xyaw ua ke uas tuav ob qho tib si casting thiab CNC machining. Ib lub tuam txhab zoo li QSY, uas muaj ob qho tib si, tuaj yeem tawm tswv yim los ntawm qhov pib. Tej zaum lawv yuav hais tias, Cia cov phab ntsa li-cam khwb cia, tab sis ua rau qhov bore 2 hli undersized ces peb yuav tshuab nws mus rau ib tug zoo meej tiav thiab kam rau ua. Lawv pom tag nrho cov kev taug kev los ntawm cov xuab zeb mus rau qhov kawg, yog li lawv cov lus qhia nqi yog holistic, tsis fragmented.
Cov Khoom Siv Myth: Tsis yog Txhua Tus Hlau yog sib npaug
Nws tsuas yog cam khwb cia hlau yog ib kab lus uas ua rau kuv wince. Grey hlau, ductile hlau, austempered ductile hlau (ADI) - txhua tus muaj qhov sib txawv ntawm cov khoom siv raw khoom thiab kev ua haujlwm. Ductile hlau yuav tsum tau kho magnesium, uas ntxiv cov kauj ruam thiab nqi. Tshwj xeeb alloys? Qhov ntawd yog lwm lub ntiaj teb. QSY teev cov ntaub ntawv xws li npib tsib xee-raws li alloys, uas tuaj yeem raug nqi 10-20 npaug ntawm ib kilo ntau dua li cov qauv grey hlau. Tab sis tus nqi loj dua tsis yog tus nqi ingot xwb; nws yog tus tuav. Cov alloys no feem ntau xav tau kev tswj kom nruj dua, cov xuab zeb sib txawv los tiv thaiv kev sib kis, thiab kev kho cua sov tshwj xeeb.
Kev xaiv cov khoom tsim nyog yog qhov kev ua lag luam raug nqi. Kuv tau ua haujlwm ntawm lub phaj hnav rau cov khoom siv mining. Thawj qhov tshwj xeeb yog rau high-chromium dawb hlau rau kev puas tsuaj loj heev. Cov xuab zeb casting nqi yog siab, thiab machining nws tom qab ntawd yog npau suav phem. Peb prototyped nws nyob rau hauv ib tug qis-alloy steel nrog ib tug hardened nto overlay. Nws ua tau 80% thiab rau 50% ntawm tag nrho cov nqi. Tus neeg siv khoom zoo siab heev. Lub luag haujlwm ntawm lub tuam txhab yog los nthuav tawm cov kev xaiv no, tsis yog tsuas yog ua cov ntawv luam tawm qhov muag tsis pom.
Tus nqi seem kuj tseem nyob ntawm cov khoom siv. Cov ntaub ntawv brittle yog yooj yim dua rau kev tawg thaum lub sij hawm shakeout (tshem cov xuab zeb) los yog txiav tawm lub rooj vag. Ib qho khoom siv siab uas ntsiag to inflates koj tus nqi zoo rau ib feem zoo. Ib lub tuam txhab txhim khu kev qha yuav muaj cov txheej txheem ruaj khov los ua kom tus nqi qis qis, uas yog vim li cas kev ua haujlwm ntev hauv kev lag luam, xws li QSY peb lub xyoo caum, feem ntau cuam tshuam nrog cov nqi zais qis. Lawv tau pom qhov ua tsis tiav thiab tsim cov tshuab kom zam lawv.
Tshaj li qhov Quote: Tus Nqi Tag Nrho Cov Tswv Cuab
Thaum kawg, qhov tiag xuab zeb casting nqi yog tus nqi tag nrho ntawm kev ua tswv cuab. Ib qho pheej yig casting uas ua tsis tau rau hauv lub tshav pob lossis ua rau lub lis piam ntawm kev rov ua haujlwm hauv koj lub khw muag khoom yog qhov kim tshaj plaws uas koj yuav tau yuav. Kev sib haum xeeb yog qhov tseem ceeb. Puas yog 500th casting yuav zoo ib yam rau thawj? Dimensional variation cuam tshuam koj cov kab sib dhos. Inclusions los yog porosity tuaj yeem ua rau cov dej ntws los yog kev ua haujlwm tsis zoo.
Qhov no yog qhov uas daim ntawv pov thawj thiab txheej txheem cov ntaub ntawv tseem ceeb. Daim ntawv pov thawj cov ntaub ntawv tsim nyog, ib tsab ntawv tshuaj ntsuam xyuas thawj zaug, cov txheej txheem tswj cov kab kos-cov no ntxiv ib qho sliver rau chav tsev nqi tab sis txuag nyiaj muaj txiaj ntsig. Rau cov khoom tseem ceeb, kuv ib txwm siv nyiaj rau qhov no. Nws yog insurance.
Yog li, thaum koj ntsuas xuab zeb casting nqi, saib yav dhau los kab hauv qab ntawm qhov kev tsocai. Nug tus qauv zoo, nug txog qhov kev xav tau, nkag siab txog txoj kev ua tiav, thiab xaiv tus khub uas pom tag nrho cov duab. Lub hom phiaj tsis yog tus nqi qis tshaj rau ib daim; nws yog tus nqi qis tshaj plaws rau kev txhim khu kev qha, kev ua haujlwm uas tau txais koj cov khoom tawm ntawm lub qhov rooj. Qhov ntawd yog qhov kev suav ua qhov tseem ceeb ntawm lub Hoobkas hauv pem teb.
