Thaum twgyasyaj nyob rau hauv pwm kab noj hniav, yog hais tias qhov kub ntawm lub ntug ntawm ob los yog ntau tshaj melts yog tsis raws nraim tib yam thaum lawv sib ntsib, cov melts tsis tau tag nrho fuse, thiab ib tug linear groove yuav generated nyob rau hauv lub integration point, yog li tsim ib tug weld kab, raws li qhia nyob rau hauv daim duab 3-14.
Daim duab 3-14 Schematic daim duab ntawm weld kab tsim
Cov laj thawj thiab kev daws teeb meem rau cov kab weld yog raws li hauv qab no:
Lub melting kub yog tsawg heev
Tsawg- kub melts muaj cov yam ntxwv ntws tsis zoo thiab ua rau cov kab sib txuas. Yog hais tias weld kab tshwm nyob rau sab hauv thiab sab nrauv ntawm ib feem yas nyob rau hauv tib qhov chaw, nws yog feem ntau yog vim tsis zoo welding tshwm sim los ntawm overheat melt kub. Txhawm rau hais txog qhov no, qhov ntsuas kub ntawm lub thoob thiab lub nozzle tuaj yeem tsim nyog nce, lossis lub voj voog txhaj tshuaj tuaj yeem txuas ntxiv kom nce qhov kub thiab txias. Nyob rau tib lub sijhawm, tus nqi ntws ntawm cov dej txias hauv pwm yuav tsum tau tswj kom tsim nyog ua kom cov pwm kub. Feem ntau, lub zog ntawm cov kab weld tsis zoo. Cov cua sov hauv cheeb tsam ntawm qhov sib thooj hauv cov pwm qhov chaw vuam kab tuaj yeem txhim kho qhov kub thiab txias ntawm thaj chaw weld thiab yog li ua kom nws lub zog. Yog tias qhov qis- txheej txheem molding kub yog qhov tsim nyog vim qhov yuav tsum tau ua tshwj xeeb, qhov kev txhaj tshuaj nrawm thiab kev txhaj tshuaj tuaj yeem raug nce kom tsim nyog los txhim kho cov yam ntxwv ntawm cov dej ntws. Ib qho me me ntawm cov roj nplua nyeem kuj tuaj yeem ntxiv rau cov khoom siv raw los txhim kho cov dej ntws zoo.
Raws li pom nyob rau hauv daim duab 3-17, lub rooj vag tsim nrog tsawg ceg ntws yuav tsum tau siv ntau li ntau tau, thiab cov rooj vag qhov chaw yuav tsum tau ua tib zoo xaiv kom tsis txhob muaj inconsistent filling speeds thiab cuam tshuam nyob rau hauv cov khoom ntws. Ib qho - taw tes pub mis yuav tsum tau siv thaum twg los tau. Txhawm rau tiv thaiv cov kab hlau los ntawm kev sib sau thaum qhov kub qis qis nkag mus rau hauv pwm kab noj hniav, lub qhov dej txias tuaj yeem muab tso rau hauv pwm thaum tib lub sijhawm nce pwm kub.
pluag pwm venting
Ua ntej, xyuas seb cov pwm vents raug thaiv los ntawm solidified yaj los yog lwm yam khoom, thiab xyuas cov khoom txawv teb chaws ntawm lub rooj vag. Yog tias cov ntsiab lus carbonization tseem tshwm sim tom qab tshem tawm qhov thaiv, ntxiv cov vents ntawm pwm qhov chaw khaws khoom. Xwb, koj tuaj yeem ua kom cov ntaub ntawv ntws los ntawm kev hloov kho lub rooj vag, kom txo tau lub zog clamping, los yog ua kom lub qhov tso pa tawm. Nyob rau hauv cov nqe lus ntawm kev txhaj tshuaj molding txheej txheem, auxiliary ntsuas xws li txo cov khoom thiab pwm kub, shortening lub siab - lub sij hawm txhaj tshuaj, thiab txo qhov txhaj tshuaj yuav tsum tau.
Kev siv tsis raug ntawm kev tso tawm tus neeg sawv cev
Hauv kev txhaj tshuaj molding, ib qho me me ntawm cov pwm tso tawm tus neeg sawv cev feem ntau yog siv sib npaug rau thaj chaw uas nyuaj rau kev tsim, xws li xov. Raws li txoj cai, tus nqi ntawm cov pwm tso tawm tus neeg sawv cev siv yuav tsum raug txo kom tsawg.
Cov khoom yas muaj cov qauv tsim tsis tsim nyog
Ib feem yas nrog cov phab ntsa nyias nyias, qhov txawv ntawm phab ntsa tuab, lossis ntau qhov ntxig tuaj yeem ua rau cov welds tsis zoo, raws li qhia hauv daim duab 3-18.
Thaum tsim cov duab thiab cov qauv ntawm cov yas, xyuas kom meej tias qhov thinnest feem ntau dua li qhov tsawg kawg nkaus tso cai phab ntsa thickness thaum molding. Tsis tas li ntawd, txo qis kev siv cov khoom ntxig thiab siv zog rau cov phab ntsa tuab dua qub.
Daim duab 3-18 Piv txwv ntawm cov nyhuv ntawm cov yas ib phab ntsa thickness ntawm cov kab weld
Lwm yam laj thawj
Cov dej noo ntau los yog cov ntsiab lus tsis hloov pauv hauv cov khoom siv yas, cov roj tsis huv hauv cov pwm, cov khoom txias hauv pwm kab noj hniav los yog tsis sib xws ntawm cov khoom siv fiber ntau hauv cov yaj, tsis tsim pwm pwm txias tsim, ua kom txias txias heev, qis qis qis qis, qis me me nozzle orifice, tsis txaus plasticizing muaj peev xwm ntawm kev txhaj tshuaj molding tshuab, thiab tag nrho cov pwm pwm tuaj yeem ua rau lub siab tsis zoo. qib neeg pluag yaj cohesion thiab weld kab, raws li qhia hauv daim duab 3-19. Yog li ntawd, thaum lub sij hawm tsim khoom, lub hom phiaj ntsuas yuav tsum tau coj los daws qhov xwm txheej sib txawv, xws li ziab cov khoom siv raw, tu cov pwm tsis tu ncua, hloov qhov loj thiab qhov chaw ntawm cov pwm txias raws, tswj cov dej ntws ntawm cov dej txias, ua kom qhov kub thiab txias, siv lub taub loj dua, thiab siv lub tshuab txhaj tshuaj loj dua.
Daim duab 3-19 Weld kab tsim los ntawm fusion ntawm melts
Tiag -world piv txwv
Cov xim loj sib txawv ntawm ob sab ntawm cov kab weld tshwm sim los ntawm qhov kub tsis tshua muaj pwm:
Thaum lub sij hawm txhaj tshuaj molding, qhov chaw ntim ntawm cov rooj vag sib txawv hauv cov pwm sib txawv heev, uas ua rau muaj qhov sib txawv tseem ceeb hauv kev khiav ceev ntawm cov yaj thaum lawv sib ntsib. Yog tias cov pwm kub qis dhau lawm, qhov ua rau ntawm qhov qeeb qeeb - ntws yaj yuav txias dhau heev, ua rau cov kua nplaum txias heev hauv cov txheej txheem khov kho. Cov txheej txheem khov kho no tuaj yeem raug compressed los yog thawb thiab rub, tsim cov cim tsis zoo. Yog li ntawd, cov xim sib txawv loj yuav tshwm sim ntawm ob sab ntawm cov yas, raws li pom hauv daim duab hauv qab no.
