Khoom Taw Qhia

FCD600 ductile hlau poob ciab peev casting qhov chaw tseem ceeb tsis xws luag

Ntws lub qhov thiab loosen lawv

Vim nws cov yam ntxwv ua kom muaj zog, nodular cam khwb cia hlau feem ntau ua rau muaj qhov tsis xws luag xws li shrinkage qhov thiab porosity vim noj tsis zoo. Txhawm rau kwv yees cov teeb meem no ua ntej casting ntau lawm, cov lej piv txwv ntawm cov txheej txheem casting tau ua nyob rau hauv tsev thiab txawv teb chaws thaum ntxov li lub sijhawm luam ntawv. Kev sib piv ntawm cov txheej txheem casting yog siv cov lej analogy thev naus laus zis los simulate qhov tseeb casting txheej txheem nyob rau hauv lub computer virtual ib puag ncig, nrog rau cov txheej txheem ntawm cov hlau ua kua, txias thiab solidification txheej txheem, txheej txheem tsim kev ntxhov siab, los txiav txim qhov cuam tshuam ntawm cov ntsiab lus tseem ceeb hauv cov txheej txheem tsim, los kwv yees lub koom haum, kev ua tau zoo thiab qhov ua tau tsis zoo, thiab muab lub hauv paus rau optimizing cov txheej txheem thiab txo cov khoom pov tseg.

Xyoo 1962, Denmark's Forsund yog thawj zaug siv lub tshuab hluav taws xob los simulate cov txheej txheem kev ua haujlwm ntawm castings, thiab txij thaum ntawd los hauv Tebchaws Meskas, Tebchaws Askiv, Lub Tebchaws Yelemees, Nyiv, Fabkis thiab lwm lub tebchaws tau ua haujlwm tshawb fawb hauv cheeb tsam no. Nyob rau xyoo 1970s, Dalian University of Technology thiab Shenyang Foundry Research Institute tau ua tus thawj coj hauv kev tshawb fawb txog cov thev naus laus zis no hauv Suav teb, thiab luam tawm cov ntaub ntawv tshawb fawb xyoo 1980 (Guo Keren li al., Digital Analogy ntawm solidification txheej txheem ntawm loj castings, Journal of Dalian Institute of Technology, 1980 (2) 1-16; qhov kev tshawb fawb no.

Thaum lub sij hawm "Sixth Five-Year Plan" thiab "Seventh Five-Year Plan" lub sij hawm, lub hauv paus ntawm lub teb chaws kev tshawb fawb project muaj ib tug kev tshawb fawb project nyob rau hauv daim ntawv thov ntawm cov computers nyob rau hauv casting, lub "Sixth Five-Year Plan" project yog " solidification tswj ntawm loj steel castings", "Seventh Tsib-Year Plan" project yog "loj hlau castings casting txheej txheem CAD", thiab kev sib koom kev tshawb fawb ntawm ntau lawm, science thiab kev tshawb fawb tau zoo heev txhawb txoj kev loj hlob ntawm no technology nyob rau hauv peb lub teb chaws. Tsinghua University thiab Huazhong University of Science thiab Technology feem tau muab FT-STAR thiab Huazhu CAE-INTE 4.0 kev lag luam chemistry software thiab siv hauv Sanming Heavy Machinery Co., LTD., thiab tau txais txiaj ntsig zoo.

Kev sib piv cov lej hauv computer muaj peb ntu: ua ntej ua ntej, nruab nrab suav thiab tom qab ua tiav, suav nrog kev tsim cov qauv geometric, kev faib cov ntsiab lus ntawm kab sib chaws, kev txiav txim siab ntawm kev daws teeb meem (cov xwm txheej pib thiab ciam teb), kev suav lej, kev ua haujlwm. ntawm kev suav cov txiaj ntsig thiab cov duab kos duab. Cov txheej txheem yooj yim ntawm cov lej sib piv siv yog finite sib txawv txoj kev, finite element method thiab ciam teb txoj kev.

(1) Cov lej sib piv ntawm cov txheej txheem solidification, feem ntau yog rau kev ntsuas kub hloov ntawm cov txheej txheem casting. Nws suav nrog kev xaiv cov lej suav, kev kho cov cua sov latent, kev twv ua ntej thiab kev ntxub ntxaug ntawm qhov shrinkage, thiab kev kho cov teeb meem hloov hluav taws xob ntawm qhov sib cuam tshuam ntawm castings thiab pwm.

(2) Kev sib piv cov lej ntawm cov dej ntws, suav nrog lub zog, lub zog thiab kev hloov pauv loj, yog qhov nyuaj dua. Cov txheej txheem daws cov lej siv suav nrog MAC txoj kev, SAMC txoj kev, SOLA-AOF txoj kev thiab SOLA-MAC txoj kev.

(3) Casting stress analogy. Qhov kev tshawb fawb no tau ua tiav lig. Nws tsuas yog nqa tawm elastic-yas lub xeev kev ntxhov siab dissociation, suav nrog Heyn qauv, elastic-yas qauv, Perzyna qauv, kev sib koom ua ke nrog cov qauv sib txawv, thiab lwm yam.

(4) Lub koom haum kev sib piv tseem nyob hauv nws cov me nyuam mos. Muaj cov macrovision, mesovision thiab microvision analogies. Nws tuaj yeem xam tus naj npawb ntawm nucleation, txheeb xyuas thawj hom siv lead ua, dendrite kev loj hlob tus nqi, kev hloov pauv cov qauv analog, thiab kwv yees cov khoom siv tshuab. Muaj cov qauv txiav txim siab, Monte, Cellular, Automaton thiab lwm yam qauv kev txheeb cais, cov qauv hauv theem thiab lwm yam.

Khoos phib tawj thiab nws daim ntawv thov yog ib qho kev loj hlob sai heev, casting raws li ib tug ntawm cov tseem ceeb industrial teb, yuav tsum tau ntxiv dag zog rau peev. Kev tshawb fawb thiab kev loj hlob ntawm daim ntawv thov ntawm lub computer nyob rau hauv lub tshav pob ntawm casting kev tshawb fawb thiab ntau lawm, kiag li hloov lub yav dhau los hom "qhib qhov muag, kaw lub qhov muag pouring" xeev, daim ntawv thov ntawm lub computer yuav kuj txhawb kev siv thiab kev loj hlob ntawm ductile hlau.

Stomal defect

Nyob rau hauv cov txheej txheem ntawm cov khoom siv hlau, tom qab kev kho cua sov, tua blasting lossis machining, feem ntau pom tias qee txoj kab uas hla ntawm 0.5-3mm, cov duab ntawm kheej kheej, elliptical lossis pinhole zoo li cov qhov du ntawm phab ntsa sab hauv, cov qhov no feem ntau faib tawm 2-3 hli nyob rau hauv daim tawv nqaij ntawm cov casting, uas yog hu ua subcutaneous porosity.

Kev tsim ntawm subcutaneous pores yog vim lub siab ntom ntom ntawm cov kua magnesium thiab hlau, uas yog ib qho yooj yim los tsim ib qho oxide zaj duab xis, uas muaj qee yam cuam tshuam rau kev cuam tshuam ntawm kev cuam tshuam ntawm cov pa tawm los ntawm cov roj av precipitated thiab invading gases, thiab cov gases yuav tsim. pores thaum lawv nyob hauv qab daim tawv nqaij. Tsis tas li ntawd, cov yam ntxwv solidification ntawm cov khoom siv hlau nplaum ua rau cov roj channel raug thaiv ua ntej, uas tseem yuav txhawb kev tsim cov subcutaneous porosity tsis xws luag.

Zhongwei Precision muaj cov kev pabcuam hauv qab no

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Copper Silica Sol Investment Casting

Peb yog cov chaw tsim khoom ntawm "FCD600 Ductile Iron Castings", yog tias koj xav tau cov ntaub ntawv ntxiv thov hu rau peb!