Cov dents ntawmPE cevfittings feem ntau yog vim tsis muaj zog ntawm cov khoom, cov khoom tsis txaus sau, thiab cov khoom tsim tsis tsim nyog. Cov dents feem ntau tshwm nyob rau hauv cov phab ntsa tuab uas zoo ib yam li cov phab ntsa nyias. Cov huab cua qhov yog tshwm sim los ntawm cov yas tsis txaus nyob rau hauv cov pwm kab noj hniav, lub nplhaib sab nrauv yas yog txias thiab solidified, thiab cov yas sab hauv shrinks los ua ib lub tshuab nqus tsev. Feem ntau nws yog tshwm sim los ntawm hygroscopic cov ntaub ntawv tsis tau qhuav zoo, thiab cov residual monomers thiab lwm yam tebchaw nyob rau hauv cov ntaub ntawv.
Txhawm rau txiav txim rau qhov ua rau ntawm lub qhov hws, nws tsuas yog yuav tsum tau saib xyuas seb cov npuas ntawm PE yeeb nkab fittings tshwm tam sim ntawd thaum pwm qhib lossis tom qab txias. Yog tias nws tshwm sim tam sim ntawd thaum lub pwm qhib, nws feem ntau yog ib qho teeb meem ntawm cov khoom, yog tias nws tshwm sim tom qab txias, nws yog ib qho teeb meem ntawm cov pwm los yog kev txhaj tshuaj molding.

(1) Khoom siv teeb meem:

① Cov khoom siv qhuav ②Ntxiv cov roj nplua nyeem ③ Txo cov teeb meem tsis haum hauv cov khoom

(2) Kev txhaj tshuaj molding

① Tsis txaus txhaj tshuaj ntim; ② Ua kom lub zog txhaj tshuaj; ③ Nce lub sijhawm txhaj tshuaj; ④ Ua kom tag nrho lub sijhawm siab; ⑤ Ua kom nrawm nrawm; ⑥ Txhim kho lub voj voog txhaj tshuaj; ⑦ Lub voj voog txhaj tshuaj yog qhov txawv txav vim kev ua haujlwm.

(3) Teeb meem kub

① Cov khoom kub heev ua rau ntau qhov shrinkage; ② Cov khoom txias dhau ua rau tsis txaus sau thiab compaction; ③ kub pwm kub ua rau cov khoom ntawm cov pwm phab ntsa tsis khov sai; ④ Tsis tshua muaj pwm kub ua rau pwm tsis txaus; ⑤Cov pwm muaj qhov chaw kub hauv zos ⑥ Hloov cov phiaj xwm txias.

(4) Pwm teeb meem;

① Nce lub rooj vag; ②Ntau tus khiav; ③Ntau cov channel loj; ④ Nce lub nozzle qhov; ⑤ Txhim kho cov pwm tso tawm; ⑥ Sib npaug cov pwm filling tus nqi; ⑦ Tsis txhob cuam tshuam ntawm cov pwm filling ntws; ⑧Gate pub noj nyob rau hauv tuab-walled ib feem ntawm cov khoom; ⑨ Yog tias ua tau, txo qhov sib txawv ntawm phab ntsa tuab ntawm PE yeeb nkab fittings; ⑩ Lub voj voog txhaj tshuaj los ntawm pwm yog qhov txawv txav.

(5) Cov teeb meem khoom siv:

① Ua kom muaj peev xwm ntawm cov yas txhaj tshuaj; ② Ua kom lub voj voog txhaj tshuaj zoo li qub;

(6) Cooling condition teeb meem:

① IbPE yeeb nkab fittingstxias ntev dhau ntawm cov pwm kom tsis txhob shrinking los ntawm sab nraud mus rau sab hauv thiab txo lub sij hawm txias ntawm pwm; ② PE yeeb nkab fittings yog txias hauv dej kub.