Raws li hom mould, cov pwm muaj rau ntau yam
(1) txhaj molding
Tuaj ntxiv rau lub tshuab txhaj tshuaj tiv thaiv yas tho yas, lub raj yas yuav rhaub, lub tshuab txhaj tshuaj los yog lub plunger, uas tau los ntawm lub taub thiab lub pwm gear system rau hauv cov kab noj hniav, vim yog qhov physics thiab chemistry hardening puab ua cov tshuaj molding khoom. Txhaj tshuaj molding yog tsim los ntawm kev txhaj tshuaj, kev tswj siab (tswj kom zoo) thiab cov txheej txheem yas suab, yog li cov kev txhaj tshuaj molding yog tus xeeb ceem raws sij hawm.Thermoplastic txhaj tshuaj molding moulding yog luv luv, high efficiency, hnav me me tuaj pwm, melting tau ua ib qho zoo tsim thiab nyeem tau yooj yim, qhov siab ntawm qhov chaw siab; Txawm li cas los, nws tsis yooj yim kom tsis txhob tsim cov teeb meem rau cov yas ntim nrog cov phab ntsa loj tuab. Tag nrho cov kev ntsuas yuav tsum raug saws los txo nws.
(2) compression molding
Feem ntau hu ua molding molding, yog ib qho ntawm cov txheejtxheem kev siv tshuaj molding plhaw.Hawm ntuag molding yog mus txuas rau cov yas ncaj qha mus rau hauv kev qhib pwm nrog cov kub, tom qab kaw pwm, thiab yas yaj rau hauv lub xeev ntws nyob hauv qhov kev txiav txim ntawm lub tshav kub thiab siab.Tau vim ntawm lub cev thiab tshuaj ua haujlwm, cov yas hnyav rau hauv ib lub hnab yas nrog ib hom khoom thiab me me.Hauv moulding yog siv rau thermosetting yas molding, phenolic molding hmoov, urea formaldehyde thiab melamine formaldehyde molding hmoov tshuaj, khob tshuaj fiber ntau, tshuaj pleev phom, phom txheej, tshuaj pleev phaj tuaj, phaj nyaj ua dua tshiab (polystyrene), polyimide, xws li cov pwm yas, .Txhua feem ntau, cov pwm yuam kev tuaj yeem raug faib ua peb hom: hom phwj, hom tsis yog phom thiab hom phom ntau.
(3) extrusion molding
Yog ua nyob rau hauv lub viscous ntws xeev ntawm yas, nyob rau hauv high kub thiab siab, los ntawm ib tug profile tshwj xeeb yog lub qhov ncauj ntawm lub puab, thiab tom qab ntawd ces tsawg kub, finalize tus tsim ua nruam profile ntawm qhov seem ntawm ib hom molding.Extrusion moulding cov txheej txheem, yog npaj cov ntaub ntawv moulding, extrusion moulding, txias tiav finalization, traction thiab txiav, extrusion aftertreatment (tempering los yog kev kho cua sov) .Nyob rau hauv txoj kev extrusion moulding, kho qhov kub ntawm txhua qhov cua sov ntawm cov extruder lub tog raj kheej, ntawm cov tuag, kev sib tsoo ciav hlau, cov ciav hlau khiav ceev thiab lwm yam haujlwm tsis tau txais qhov tsim nyog seem. Lub siab yuav tsum tau them nyiaj rau kev kho ntawm tus nqi ntawm extrusion polymer los ntawm kev tuag.Vim thaum lub suab sov extrusion tus nqi tsawg, lub extruder tau ib qho chaw saum npoo thiab qhov sib xyaw zoo li cas; Txawm li cas los xij, thaum lub rhaub dej ntawm cov khoom siv roj tas mus li ib qho kev txwv, qhov saum npoo ntawm extruder wil ua lub ntxhib thiab poob lus, thiab cov tsos ntawm daim tawv nqaij, cov txiv kab ntxwv tawv thiab cov duab distortion yuav tshwm sim.Thaum cov extrusion tus nqi nce ntxiv, qhov nto ntawm extruder yog distorted, txawm fragmented thiab fractured rau hauv molten tawg lossis tag nrho.Yog li ntawd, tswj kev extrusion tus nqi tseem ceeb heev.
(4) txhaj tshuaj molding
Kuj hu ua cov khoom ntim yas moulding.Piv ntxiv rau cov khoom yas yas mus rau preheat rau sab hauv tsev, thiab tom qab ntawd muab tso rau sab nraud rau lub tsuj chamber xauv pwm, los ntawm kev ceev nruj siab ntawm yas, yas yaj hauv kub thiab siab siab raws li lub xeev khiav , thiab los ntawm cov dej cij rau hauv cov kab noj hniav maj mam muab pov rau hauv cov yas nrig.Qhov daim ntawv no ntawm moulding, tseem hu ua molding.Qhov txhaj tshuaj molding yog tsim rau cov yas uas qis dua cov khoom yas, uas tuaj yeem siv tau thiab ua molded hauv txoj cai. Txawm li cas los xij, thaum molding cov khoom qis dua qhov ntsuas kub, qhov lub raj tso dej muaj qhov zoo, thiab thaum siab tshaj qhov ua kom sov, muaj ib qho loj.
(5) hollow molding
Yog coj los ntawm kev ploj los yog kev txhaj tshuaj, tseem nyob rau hauv lub xeev ntawm cov yas tubular los yog cov dej ntws hauv PiCai tsau hauv molding, tam sim ntawd mus rau hauv cov huab cua uas tau sau, xa PiCai kom loj thiab xa lawv tawm ntawm cov pwm kab noj hniav, tom qab tos kom txias tas , mould tso tawm, ceev ceev ib txoj kev ua cov khoom hollow.Nws yog tsim rau siab siab polyethylene, tsis tshua muaj siab polyethylene, polyvinyl chloride nyuaj, polystyrene, polypropylene, polycarbonate thiab so on.Raws li qhov sib txawv txoj kev ua, hollow molding yog mas faib ua extrusion tshuab molding thiab txhaj tshuab molding.Qhov zoo ntawm extrusion tshuab molding yog cov qauv yooj yim ntawm extruder thiab extrusion tshuab pwm. Qhov tsis zoo yog tias phab ntsa ntawm qhov seem tsis zoo ibyam, thiab cov phab ntsa thickness ntawm cov khoom siv yas tsis yog zoo li.Qhov daim duab yog ib daim duab schematics ntawm extrusion tshuab moulding.Kev ua tshuab blasting yas hollow molding muaj kom zoo dua ntawm parison phab ntsa thickness , tsis muaj flash, vim hais tias lub plab txhaj slab qab, thiaj li yuav tsis tsim spell thiab seam rau hauv qab ntawm cov khoom tsis zoo, tsis zoo nkauj xwb thiab siab zog.Qhov disadvantage yog tias cov khoom siv molding thiab cov pwm nqi kim, li no hom ntawm txoj kev ua qauv yog siv los ua ntau yam khoom me me, thiab tsis muaj extrusion tshuab molding txoj kev siv.
(6) tuag casting pwm.
Tuag casting pwm tseem hu ua hloov molding cuab tam.Tau ntxiv cov khoom yas yas mus rau preheat loading chamber, thiab ces mus rau siab ntawm sab siab, yas yaj hauv kub thiab siab siab, thiab los ntawm cov pwm gear system mus rau hauv lub kab noj hniav , nws ua txoj hauv kev, txoj kev hu ua tuag-casting molding, pwm tuag casting molding.Qhov hom pwm siv nyob rau hauv lub molding ntawm thermosetting yas.
Tsis tas li ntawd, muaj npuas yas pwm, iav fiber reinforced yas low-pressure molding pwm thiab li ntawm.