Thaum compression molding ntawm thermosetting yas hauvcemented carbide pwm, lawv yuav tsum tau khaws cia ntawm ib qho kub thiab siab rau ib lub sij hawm ntawm lub sij hawm thiaj li yuav tag nrho cross-links thiab solidify lawv mus rau hauv yas qhov chaw nrog zoo heev kev ua tau zoo. Lub sijhawm no hu ua compression time. Lub sij hawm compression muaj feem xyuam rau hom yas (hom resin, volatile teeb meem cov ntsiab lus, thiab lwm yam), cov duab ntawm cov yas, cov txheej txheem ntawm compression molding (kub, siab), thiab kev khiav hauj lwm cov kauj ruam (xws li tso pa tawm, pre-siab, preheating), thiab lwm yam. Raws li compression molding kub nce, cov yas solidifies sai thiab lub sij hawm compression yuav tsum tau txo. Yog li ntawd, lub voj voog compression kuj yuav txo qis thaum pwm kub nce. Qhov cuam tshuam ntawm compression molding siab ntawm lub sij hawm molding tsis pom tseeb li molding kub, tab sis raws li lub siab nce, lub sij hawm compression kuj yuav txo me ntsis. Txij li thaum preheating txo cov yas filling thiab pwm qhib lub sij hawm, lub sij hawm compression yog luv dua yam tsis muaj preheating. Feem ntau lub sij hawm compression nce raws li cov thickness ntawm cov yas feem ntau nce.
Qhov ntev ntawm compression lub sij hawm ntawm cemented carbide pwm muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov khoom yas. Yog hais tias lub sij hawm compression luv luv thiab cov yas tsis hardened txaus, cov tsos thiab txhua yam khoom ntawm cov yas yuav deteriorate, thiab cov khoom yas yuav yooj yim deformed. Ua kom lub sij hawm compression kom zoo tuaj yeem txo qis tus nqi ntawm cov khoom yas thiab txhim kho cov cua sov thiab lwm yam khoom siv lub cev thiab cov khoom siv ntawm carbide pwm. Txawm li cas los xij, yog tias lub sij hawm compression ntev dhau lawm, nws yuav tsis tsuas yog txo cov khoom tsim tau, tab sis kuj nce tus nqi ntawm cov khoom yas vim qhov kev sib txuas ntawm cov resin ntau dhau, ua rau muaj kev ntxhov siab, ua rau txo qis hauv cov khoom siv ntawm cov yas, thiab hauv cov xwm txheej hnyav, cov yas yuav tawg. Rau cov phenolic plastics, lub sij hawm compression yog 1 mus rau 2 feeb, thiab rau silicone plastics, nws yuav siv sij hawm 2 mus rau 7 feeb.
Dab tsi yog cov hauv paus ntsiab lus rau kev xaiv cov cemented carbide pwm cov ntaub ntawv?
1) Kev ua tau zoo ntawm cov pwm carbide yuav tsum tau ua tiav. Nws yuav tsum muaj lub zog txaus, hardness, plasticity, toughness, thiab lwm yam kom tau raws li kev ua haujlwm, hom tsis ua haujlwm, lub neej yuav tsum tau muaj, kev ntseeg tau, thiab lwm yam ntawm cov pwm carbide.
2) Cov ntaub ntawv xaiv yuav tsum muaj cov khoom ua haujlwm zoo raws li kev tsim khoom sib txawv.
3) Qhov xwm txheej ntawm cov khoom lag luam yuav tsum tau muab coj los xav. Kev lag luam cov peev txheej thiab cov khoom siv tiag tiag yuav tsum xav txog. Sim daws qhov teeb meem hauv tsev nrog tsawg ntshuam, thiab ntau yam thiab cov lus qhia tshwj xeeb yuav tsum yog qhov tseem ceeb.
4) Carbide pwm yuav tsum muaj kev lag luam thiab tsim nyog, thiab sim siv cov khoom siv qis uas ua tau raws li kev ua tau zoo thiab kev siv.
Post lub sij hawm: Aug-02-2024
