Thaum cov neeg feem coob hnov 'silica sol precision casting', lawv daim duab flawless, net-shape tivthaiv, npaj mus. Qhov ntawd yog qhov zoo tshaj plaws kev lag luam. Qhov tseeb, kev sib tsoo txhua hnub, yog kev sib tham tas mus li nrog cov tshuaj lom neeg colloidal, daim ntawv thov stucco, thiab lub cev tsis muaj kev zam txim ntawm cov hlau solidification. Nws tsis yog tsuas yog ua cov pwm; Nws yog hais txog engineering ib ntus, ceramic-lined kab noj hniav uas coj kwv yees li ntawm 1500 ° C molten hlau. Ntau lub khw tau kho ntawm qib hlau kawg-uas yog qhov tseem ceeb, paub meej-tab sis hauv kuv qhov kev xav, kev sib ntaus sib tua tiag tiag yeej lossis poob hauv chav slurry thiab dewaxing autoclave. Qhov ntawd yog qhov chaw geometry yog khaws cia los yog distorted ua ntej ib qho poob ntawm cov hlau yog nchuav.
Lub Core Misconception: Nws Tsuas yog Binder
Ntau tus kho cov silica sol raws li cov kua nplaum yooj yim, ib daim ntawv tuav cov hmoov refractory ua ke. Qhov ntawd yog qhov txaus ntshai oversimplification. Nws yog ib qho kev ua neej nyob. Lub sol viscosity, pH, thiab SiO2 cov ntsiab lus tsis yog cov lej ntawm ib daim ntawv qhia tshwj xeeb; lawv dictate yuav ua li cas thawj lub tsho tiv no wets tus qauv siv quav ciab, npaum li cas nws ntws, thiab thaum kawg, lub nto tiav ntawm lub casting. Kuv tau pom batches qhov twg cov sol yog me ntsis 'laus', ua rau kom ceev gelling cov tshuaj tiv thaiv nrog ethyl silicate hardener. Qhov tshwm sim? Ib lub tsho tseem ceeb uas micro-tawg thaum lub sij hawm dewaxing, ua rau cov leeg tsis xws luag ntawm txhua qhov kev ua haujlwm hauv kev khiav. Cov hlau yog zoo meej 316L, tab sis cov khoom seem.
Qhov no yog qhov kev paub dhau los ntawm tus neeg muag khoom tseem ceeb. Koj xav tau ib tus neeg koom tes uas nkag siab tias cov khoom siv tau tshwj xeeb raws li cov txheej txheem. Ib lub tuam txhab zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nrog lawv peb xyoo caum hauv plhaub pwm thiab peev casting, tau txais qhov no intrinsically. Nws tsis yog tsuas yog muag koj silica sol; nws yog hais txog kev paub tias qhov kev vam meej ntawm koj silica sol precision casting txheej txheem hinges ntawm qhov sib xws ntawm cov kua heev. Lawv lub sijhawm ua haujlwm ntev qhia txog kev sib sib zog nqus, kev paub zoo nrog cov khoom siv nuances, hom uas tsuas yog los ntawm kev khiav cov kab ntau lawm txhua xyoo.
Qhov kev xaiv ntawm cov hmoov nplej refractory-fused silica, zircon, los yog ib yam dab tsi zoo li mullite-yog sib yuav rau tus cwj pwm ntawm sol. Zircon xav tau qhov sib txawv ntawm cov viscosity dua li fused silica rau kev pom zoo. Nws yog kev sib tw. Koj tsis tuaj yeem txhim kho ib qho hauv kev sib cais. Peb kawm qhov no txoj kev nyuaj ntawm ib qhov project rau ib tug turbine hniav qauv. Peb hloov mus rau cov hmoov zircon zoo dua rau kev nthuav dav zoo dua qub tab sis khaws cov dipping tsis zoo ib yam. Lub slurry yog tuab heev, cov ces kaum tau txuas nrog, thiab lub plhaub tau tsim cov cheeb tsam uas muaj zog tsawg. Cov shells tau tawg thaum tuav. Ib zaj lus qhia kim heev hauv kev xav.
The Plhaub-Building Dance: Ib Txheej-los-Txheej Kev Sib Haum Xeeb
Tsim lub plhaub yog qhov kev tshawb xav ua tau raws li qhov tsis sib haum xeeb ntawm lub khw hauv pem teb. Phau ntawv hais tias 7-9 lub tsho loj. Tab sis rau qhov tuab-section steel casting? Tej zaum koj yuav xav tau ntau lub tsho tiv no rau lub zog, tab sis txhua lub tsho tiv no ntxiv rau kev pheej hmoo ntawm kev ntxhov siab thaum ziab. Rau qhov nyias-walled, intricate stainless hlau feem, koj tuaj yeem ua qhov tseem ceeb tsawg dua, cov tsho zoo nkauj kom tsis txhob sau cov ntsiab lus. Nws yog kev sib haum xeeb ntawm lub zog ntsuab, permeability, thiab qhov tseeb qhov tseeb.
Kev ziab ntawm cov tsho tiv no yog qhov tsis tshua muaj qhov sib txawv tshaj plaws. Nws tsis yog hais txog lub sijhawm; Nws yog hais txog airflow, humidity, thiab kub uniformity nyob rau hauv lub ziab khaub ncaws. Ib qho me me tuaj yeem ua rau ib sab ntawm pawg kom qhuav sai, ua rau muaj kev ntxhov siab sib txawv. Peb ib zaug muaj teeb meem rov tshwm sim nrog lub plhaub tawg ntawm ib sab ntawm peb cov racks qhuav. Siv peb lub lis piam los taug qab nws rov qab mus rau HVAC qhov cua uas tau tsim kom muaj huab cua micro. Qhov kho tsis nyob hauv cov mis slurry; nws yog nyob rau hauv kev tswj chaw.
Stuccoing yog lwm yam txuj ci. Qhov loj thiab hom stucco - dua, zircon, fused silica, alumino-silicate - txiav txim siab lub plhaub lub porosity thiab tsis kam mus rau hlau nkag. Zoo heev, thiab koj choke tawm roj khiav thaum lub sij hawm pouring, ua rau roj porosity nyob rau hauv lub casting. Nyuaj dhau lawm, thiab koj tau txais ib qho ntxhib sab hauv uas tuaj yeem ua rau hlau nkag thiab ua tiav tsis zoo. Rau high-temperature alloys QSY cov npe, xws li npib tsib xee-raws li thiab cobalt-raws li alloys, uas muaj cov ntsiab lus melting siab thiab sib txawv fluidity, lub tswv yim stucco yuav hloov mus rau siab dua refractoriness thiab thermal shock resistance. Lawv cov kev paub dhau los ntawm ntau yam khoom siv, los ntawm cov hlau cam khwb cia rau cov alloys tshwj xeeb, txhais tau hais tias lawv yuav tsum tau ua raws li cov kev hloov kho no.
Dewaxing: Lub Sij Hawm-Stress Moment
Nov yog thawj qhov tseeb ntawm koj lub plhaub. Tag nrho cov txheej txheem ceev faj yog hais txog yuav raug thermal expansion sai li cov quav ciab melts thiab nthuav. Lub autoclave qhov siab thiab qhov kub thiab txias yog qhov tseem ceeb. nrawm dhau, thiab lub zog hydraulic ntawm cov quav ciab yuav tawg txawm tias lub plhaub tau zoo. qeeb dhau, thiab koj yuav raug tshem tawm tsis tiav, ua rau hluav taws kub thiab cov pa roj carbon tsis zoo thaum hlawv.
Peb muaj ib pawg ntawm cov plhaub rau qee lub cev valve uas tsis tu ncua tawg ntawm lub hauv paus sprue. Cov plhaub taum zoo tag nrho. Peb kuaj txhua yam - slurry, ziab, stucco. Thaum kawg, peb saib cov quav ciab nws tus kheej. Ib tus neeg muag khoom tshiab muaj qhov coefficient siab dua me ntsis ntawm thermal expansion. Lub plhaub, tsim los rau lub qub wax expansion profile, tsis tuaj yeem muaj lub siab ntxiv. Txoj kev daws teeb meem yog hloov kho lub voj voog autoclave, qhia luv luv pre-pressure so kom soften lub wax core ua ntej lub ntsiab chav blast. Nws ntxiv 3 feeb rau lub voj voog tab sis tau cawm ntau txhiab hauv seem.
Burnout & Pouring: Qhov twg Ceramic Plhaub Khwv tau nws
Burnout tsis yog tsuas yog hlawv tawm cov khoom seem. Nws yog hais txog sintering cov ceramic, tsim nws qhov kawg kub lub zog. Txoj kev mus rau 1000 ° C + yuav tsum tau tswj kom tsis txhob muaj kev poob siab. Txhua cov pa roj carbon seem ntawm cov quav ciab tuaj yeem tsim kom muaj qhov txo qis hauv lub plhaub, uas rau qee cov hlau zoo li cov hlau tsis muaj steel, tuaj yeem ua rau muaj kev puas tsuaj rau saum npoo chemistry.
Ces los lub ncuav. Qhov no yog qhov uas lub plhaub permeability tseem ceeb heev. Molten hlau ntws hauv, gases yuav tsum tau khiav tawm ntawm lub plhaub phab ntsa. If the shell is too dense (from over-dipping or too fine stucco), the gas gets trapped, forming pinholes. Kuv nco qab ib txoj hauj lwm rau lub twj tso kua mis impeller hauv duplex stainless hlau. Lub plhaub tau zoo nkauj, ntom, thiab muaj zog. Tab sis peb muaj 30% tsis lees paub tus nqi rau cov pa roj. Qhov teeb meem tau taug qab rov qab mus rau lub tsho thib peb thiab plaub lub tsho slurry, uas peb tau milled ntev me ntsis rau kev ruaj ntseg, ua rau nws zoo heev thiab txo cov inter-particle pores. Ib rooj plaub classic ntawm kev txhim kho ib qho khoom (slurry stability) ntawm tus nqi ntawm ib qho tseem ceeb (permeability).
Tiav & Lub Ntiaj Teb Tiag Tiag
Cov ntaub ntawv pov thawj yog nyob hauv chav sib tsoo. Ntau npaum li cas cov Tshuag yuav tsum tau muab tshem tawm? Ib tug zoo ua silica sol precision casting txheej txheem yuav tsum yield qhov chaw yuav tsum tau tsawg kawg nkaus finishing. Lub qhov rooj tshem tawm ntawm lub qhov rooj yuav tsum huv si, tsis txhob rhuav tshem ib feem ntawm lub hauv paus casting. Qhov saum npoo yuav tsum tau huv txaus uas rau qee lub ntsej muag tsis tseem ceeb, lub teeb iav-pob zeb tawg yog txaus. Qhov no yog ib qho kev txuag nyiaj loj heev, tshwj xeeb tshaj yog rau cov alloys nyuaj xws li cobalt-raws li cov uas nyuaj rau tshuab.
Qhov no yog qhov kev pabcuam kev sib koom ua ke uas tus muab kev pabcuam puv ntoob nqa. Nws tsis yog tsuas yog ua lub plhaub thiab nchuav hlau. Nws yog tag nrho cov nqi saw, los ntawm cov qauv ua rau qhov kawg CNC machining. Saib QSY's Scope-encompassing plhaub pwm casting, peev casting, thiab CNC machining-lawv tau tsim los tswj tag nrho cov dej ntws. Lawv tuaj yeem tsim cov txheej txheem casting nrog lub machining hauv siab, optimizing qhov chaw ntawm lub qhov rooj kom huv si tsawg, uas yog ib qho txiaj ntsig zoo rau cov khoom siv. Lawv lub website, https://www.tsingtaocnc.com, qhia txog qhov kev sib xyaw ua ke no, muab tso rau lawv raws li kev daws teeb meem rau cov khoom tiav, tsis yog cov khoom siv raw.
Thaum kawg, silica sol precision casting yog cov saw ntawm ib puas qhov kev txiav txim me me. Txhua tus - los ntawm pH ntawm lub sol mus rau tus nqi nce nyob rau hauv lub qhov cub burnout - tawm ib tug ntiv tes rau ntawm qhov kawg. Cov khw uas ua tiav tsis yog ua raws li daim ntawv qhia xwb; lawv tab tom nyeem cov plhaub, txhais cov kab nrib pleb, thiab niaj hnub tweaking txheej txheem. Nws yog kev sib xyaw ntawm cov ntaub ntawv sib sib zog nqus thiab kev siv tes ua, yuav luag intuitive, khw hauv pem teb khoom siv tes ua. Lub hom phiaj yeej tsis zoo tag nrho; nws yog kwv yees, rov ua tau zoo tshaj, batch tom qab batch. Thiab qhov ntawd tsuas yog los ntawm lub sijhawm nyob rau hauv trenches, cuam tshuam nrog cov av noo ntawm lub caij monsoon lossis ib pawg tshiab ntawm cov xuab zeb refractory uas coj txawv me ntsis.
