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Kev tshuaj xyuas lub sijhawm txias ntawm Kev Txhaj Tshuaj Molding

Plaub Hlis Ntuj 14, 2021

Hauv kev txhaj tshuaj ntau lawm, yas txhaj tshuaj molding qhov chaw txias lub sij hawm ntawm tag nrho cov kev txhaj tshuaj ntau lawm voj voog ntawm txog 80%. Kev ua kom txias tsis zoo feem ntau ua rau muaj kev sib tsoo ntawm cov khoom lossis qhov chaw tsis zoo, cuam ​​tshuam qhov seem stability ntawm cov khoom. Tsim nyog npaj kev txhaj tshuaj, packing thiab txias lub sij hawm, tuaj yeem txhim kho cov khoom zoo thiab kev tsim khoom.

Ib feem ntawm lub sijhawm txias, feem ntau yog hais txog cov yas yaj los ntawm cov pwm uas muaj pwm kab noj hniav tuaj yeem qhib kom tshem tawm ib feem ntawm lub sijhawm. Muaj peev xwm qhib pwm tawm ntawm lub sij hawm tus qauv, feem ntau nrog lub workpiece tau kho tag nrho, nrog ib tug tej yam lub zog thiab rigidity yeej, nyob rau hauv pwm tawm ntawm sab saum toj ntawm lub deformation yuav tsis tawg. Txawm nrog cov yas molding tib yam, nws lub sij hawm txias nws txawv nrog phab ntsa thickness, molten yas kub, pwm tso kub thiab txhaj tshuaj pwm kub. Cov mis rau xam lub sij hawm txias ntawm a 100% hauv paus nyob rau hauv txhua rooj plaub tseem tsis tau luam tawm, tab sis tsuas yog nyob ntawm lub hauv paus ntawm cov kev xav uas tsim nyog. Cov mis laij lej kuj txawv nyob ntawm lub sijhawm txias txhais.

Tam sim no, feem ntau yog peb yam hauv qab no raws li kev siv lub sijhawm txias:

â‘  qhov kub ntawm qhov tuab ntawm phab ntsa ntawm cov yas txhaj tshuaj molding phab ntsa, lub sij hawm yuav tsum tau kom txias hauv qab lub tshav kub distortion kub ntawm cov yas;

(2) qhov nruab nrab kub nyob rau hauv seem ntawm lub yas txhaj molding seem, lub sij hawm yuav tsum tau txias pwm kub ntawm cov khoom teev;

③ qhov kub ntawm qhov thickest ntawm lub hauv paus phab ntsa ntawm crystalline yas molding phab ntsa, lub sij hawm yuav tsum tau txias hauv qab lub melting point, los yog lub sij hawm yuav tsum tau mus txog qhov feem pua ​​ntawm crystallization.

Hauv kev daws teeb meem qauv, cov kev xav hauv qab no feem ntau ua:

â‘  txhaj tshuaj yas hauv lub txhaj tshuaj pwm, thiab cov cua sov hloov mus rau qhov txhaj tshuaj pwm thiab txias;

â‘¡ yas molding kab noj hniav thiab cov pwm kab noj hniav nyob ze rau qhov txias shrinkage thiab sib cais, yaj thiab pwm phab ntsa ntawm lub tshav kub hloov thiab ntws yam tsis muaj kev tiv thaiv, yaj thiab pwm phab ntsa sib cuag nrog lub caij kub tau ua tib yam. Qhov ntawd yog, thaum cov yas rau hauv kab noj hniav, lub workpiece nto kub yog sib npaug rau pwm phab ntsa kub;

â‘¢ yas txhaj tshuaj molding qhov chaw txias txheej txheem, qhov txhaj tshuaj pwm kab noj hniav kub saum npoo yog ib txwm sib xws;

â‘£ txhaj tshuaj pwm nto tshav kub conduction degree yuav tsum; (melt filling txheej txheem raws li txheej txheem isothermal, thiab cov khoom kub sib xws)

⑤ kev taw qhia yas thiab thermal stress ntawm qhov deformation ntawm qhov chaw tuaj yeem tsis quav ntsej, qhov loj ntawm daim ntawm solidification kub tsis cuam tshuam.

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