Kwi-compression molding, ii-halves ezimbini ezihambelanayo zokubumba zifakwe kwi-press (ngokuqhelekileyo i-hydraulic), kwaye ukunyakaza kwabo kunqunyelwe kwi-axis perpendicular kwi-plane ye-mold.Umxube we-resin, i-filler, ukuqinisa izinto, i-ejenti yokuphilisa, njl njl. icinezelwe kwaye iphiliswe kwimeko yokuba izalise yonke indawo yokufa kokubumba.Le nkqubo ihlala inxulunyaniswa nezinto ezininzi, kubandakanya:
Epoxy resin prepreg ifayibha eqhubekayo
Ikhompawundi yokubumba amaphepha (SMC)
Imodeli yokulahla imathiriyeli (DMC)
I-Bulk Molding Compound (BMC)
Imathi yeglasi ye-thermoplastic (GMT)
Uxinzelelo lokubumba amanyathelo
1. Ukulungiswa kwezinto zokubumba
Ngokubanzi, izinto zokubumba ezinomgubo okanye zegranular zifakwa kumngxuma, kodwa ukuba umthamo wemveliso mkhulu, unyango lwangaphambili ludla ngokuba luncedo.
2. Ukufudumala kwezinto zokubumba
Ngokufudumeza izinto zokubumba kwangaphambili, umkhiqizo owenziweyo unokuphiliswa ngokufanayo, kwaye umjikelezo wokubumba unokunciphisa.Ukongezelela, ekubeni uxinzelelo lokubumba lunokunciphisa, lubuye lube nefuthe lokuthintela umonakalo wokufaka kunye nokubumba.Izixhobo zokomisa umoya oshushu zikwasetyenziselwa ukufudumeza kwangaphambili, kodwa izifudumezi ezisebenza ngamaza omoya aphezulu zisetyenziswa kakhulu.
3. Umsebenzi wokubumba
Emva kokuba izinto zokubumba zifakwe kwi-mold, izinto zokuqala zithotywa kwaye zihamba ngokupheleleyo phantsi koxinzelelo oluphantsi.Emva kokuphelelwa amandla, isikhunta siyavalwa kwaye sicinezelwe kwakhona ukuze sinyange ixesha elimiselweyo.
I-polyester engasetyenziswanga kunye ne-epoxy resins ezingavelisi igesi ayifuni ukukhupha.
Xa kufuneka i-degassing, ixesha lokucwangcisa kufuneka lilawulwe.Ukuba ixesha lingaphambili, inani legesi ekhutshweyo lincinci, kwaye ixabiso elikhulu legesi liya kutywinwa kwimveliso, enokuthi ivelise ama-bubbles kwindawo yokubumba.Ukuba ixesha liphelile, irhasi ibanjelwe kwimveliso ephiliswe ngokuyinxenye, kunzima ukuyibaleka, kwaye inokubangela ukuqhekeka kwimveliso ebunjiweyo.
Kwiimveliso ezinodonga olungqingqwa, ixesha lokunyanga liya kuba lide kakhulu, kodwa ukuba ukunyanga akuphelelanga, amaqamza anokuveliswa kwindawo yokubumba, kwaye iimveliso ezineziphene zinokuveliswa ngenxa yokuguqulwa okanye ukushwabana kwangemva.
Ixesha lokuposa: Apr-15-2021