Xov Xwm Txog Lub Tuam Txhab

Ntawm ntau yam txheej txheem molding ntawm cov pwm yas,kev txhaj tshuaj molding yog qhov siv ntau tshaj plaws. Lub tswv yim qhia tau hais tias kev txhaj tshuaj molding muaj qhov zoo ntawm kev siv tau cov khoom siv zoo, lub peev xwm pwm cov khoom nrog cov qauv nyuaj ib zaug, cov txheej txheem tiav, cov khoom raug siab, thiab cov nqi siv tsawg. Yog li ntawd, cov khoom txhaj tshuaj molding suav rau qhov feem pua ​​ntawm cov khoom yas los ntawm ib lub sijhawm mus rau ib lub sijhawm. Nrog rau kev nce ntxiv, cov txheej txheem cuam tshuam, cov khoom siv, pwm thiab cov txheej txheem tswj kev siv kuj tau tsim kho sai.

Cov thermoplastics yog cov khoom yas uas tuaj yeem pwm ua ib yam duab thaum cua sov, thiab lo rau cov duab tiav tom qab txias. Yog tias nws raug cua sov dua, nws tuaj yeem ua kom mos thiab yaj, thiab ib qho khoom yas uas muaj ib yam duab tuaj yeem ua dua, thiab nws tuaj yeem nres ntau zaus, uas yog rov qab tau.

Vim tias cov thermoplastics yog cov khoom siv uas tuaj yeem ua kom sov thiab mos thiab txias thiab tawv dua, lawv tuaj yeem ua kom khov thiab tsim los ntawm kev ua kom sov thiab yaj, yog li cov khib nyiab ntawm cov thermoplastics feem ntau tuaj yeem rov ua dua thiab rov siv dua, uas hu ua "khoom siv thib ob". Qhov tom qab shrinkage ntawm cov khoom txhaj tshuaj molded txhais tau tias thaum cov khoom txhaj tshuaj molded raug molded, ntau qhov kev ntxhov siab raug tsim vim lawv cov kev hloov pauv sab hauv lub cev, tshuaj lom neeg, thiab kev kho tshuab. Tom qab cov khoom txhaj tshuaj molded raug molded thiab khov, muaj kev ntxhov siab seem. Tom qab cov khoom txhaj tshuaj molded raug rhuav tshem, vim muaj ntau yam kev ntxhov siab seem, Nws yuav ua rau qhov loj me ntawm cov khoom txhaj tshuaj molded txo qis dua.

Feem ntau, cov khoom txhaj tshuaj pwm yuav ntsws me ntsis hauv 10 teev tom qab demolding, thiab nws yeej zoo li tom qab 24 teev, tab sis nws siv sijhawm ntev heev kom mus txog qhov kawg. Feem ntau hais lus, qhov tom qab shrinkage ntawm thermoplastics yog loj dua li ntawm thermoset plastics, thiab qhov tom qab shrinkage ntawm kev txhaj tshuaj pwm thiab kev txhaj tshuaj pwm yog loj dua li ntawm shrinkage-molded txhaj tshuaj pwm.