Le yinkqubo yemveliso yeshishini lokuvelisa ibhokisi yokutya, ungabhekisa ekufundeni ulwazi olufanelekileyo lweroukubumba.
Rotomolding yindlela entsha nephucukileyo yemveliso yokwenziwa kweplastiki, ebonakala ngoku:
1, ilungele ukusetyenzwaiimveliso ezinkulu ezingenanto, njengeitanki yamanzi, itanki yeoli, izixhobo ezinkulu zokuzonwabisa, udonga olulodwa, njl.
2,Iindleko zokulungisa ziphantsi, ngakumbi iindleko zokungunda yi-1/3 kuphela ye-injection mold. Ukusilela kwayo kukufuna okuphezulu kwemathiriyeli ekrwada, kwaye ukuchaneka kwemveliso egqityiweyo kumbi xa kuthelekiswa nokubumba inaliti.
Inkqubo yokuveliswa kwayo imi ngolu hlobo lulandelayo:
一,Ukulungiswa kwemathiriyeli ekrwada
(一) Iimfuno zemathiriyeli ekrwada yerotomolding imveliso
I-1.melting index ngokuqhelekileyo ayikho ngaphezu kwe-5.0g / 10min.
I-2.i-powder particles 30 ~ 60 mesh (iingqungquthela ezijikelezayo azikwazi ukuba nenani elikhulu lomsila kunye ne-prisms, i-flake particles).
3.yomile.
(二) Iimfuno kwimathiriyeli ekrwada yeimveliso yeplastiki eqengqelekayo
I-LLDPE yodidi lwentambo enye kunzima ukuqinisekisa iimfuno ezithile zeemveliso (ezifana neebhokisi zokugcina imfazwe eziveliswe yinkampani yethu), ngoko ke izixhobo ezidibeneyo (ekwaziwa ngokuba luhlengahlengiso lweplastiki) zisetyenziswa ngokubanzi, njenge-7042 kunye ne-UR644 imathiriyeli enomanzi kodwa amandla angonelanga. Ke ukuze kuqinisekiswe umgangatho weemveliso ezithile, 7042, 6090, 500S okanye UR644, A760. Imveliso ethile ifomula yemathiriyeli ekrwada ifunyanwa emva kwamashumi ezigidi zovavanyo lwenzululwazi, oluyimfihlo, lunelungelo elilodwa lomenzi wechiza, nabani na akanako ukutshintsha ifomula ngaphandle kovavanyo.
Imveliso eyodwa ethile kufuneka yongezwe ngokuhambelana nokusebenza kwemveliso, enye inkosi, i-antioxidants, efana nokuveliswa kombala ukujoyina i-rolling master grade master. Imveliso isetyenziselwa ngaphandle ixesha elide, yongeza i-antioxidants, ukuveliswa kwezinto ezithintela umlilo, i-anti-aging agents, abagqugquzeli kunye nokunye.
(三) inkqubo ethile yetekhnoloji
1. Ngokwelungiselelo lenkokeli, zonke iintlobo zezinto eziluhlaza kunye ne-accelerators ezidweliswe kwifomyula yemveliso zifakwe kwi-mixer ngabasebenzi abanikwe ngokukodwa, kwaye umxube uxutywe ekuqaleni komxube. Ixesha lokuxuba yi> 10 imizuzu (i-mixer yahlulwe yaba yi-mixer eqhelekileyo kunye ne-high-speed mixer, kwaye kuyacetyiswa ukuba kusetyenziswe umxube wesantya esiphezulu ukuba ingxowa-mali iyakuvumela. Inqaku eliphambili lale nkqubo ngumlinganiselo ochanekileyo wazo zonke iintlobo imathiriyeli ekrwada, ekufuneka isetyenziswe kunye nezixhobo zomgangatho ofanelekileyo.
I-2, i-extrusion granulation machine operator ene-hand disk motor pulley, umatshini unokuqhuba ngokulula, izinto eziphathekayo emva kokuxuba ibhetshi kumatshini wegranulation, iqhosha lemoto njalo njalo. Emva kokuba i-motor ammeter iphakama, vala iqhosha lokufudumeza kwaye ulungise ubushushu bendawo yokufudumala. Inkampani yam ithenge umatshini wegranulating yahlulwe kwiindawo ezine zokufudumeza, ukusuka kwi-hopper ukuya phambili ngokulandelelana: indawo nganye, ngokubanzi i-150 ℃. Indawo yesibini yi-180℃. Emva kokuphuma kwindawo yesithathu 180 ℃. Impumlo yi-190 ℃.
Emva kokuba umgca wezinto ezikhutshiweyo upholile ngetanki yamanzi, ifakwe kwi-granulator kwaye ukutshintshwa kwamandla wegranulator kuvaliwe. Umatshini we-pelleting uya kutsalela ngokuzenzekelayo kumgca wezinto eziphathekayo ukuze uhlanjululwe. Umqhubi womatshini wokwenza umsebenzi kufuneka ajonge ukusebenza kwe-extruder, ukuba ukufumanisa apho kulindeleke ukuba kucinezele i-extruder vent, kufuneka kunqunyulwe ngokukhawuleza umthombo wombane kwaye uhlale emva kokuba umatshini eyeka ukusebenza ngokupheleleyo kwi-extrusion yempumlo yokufa, utshintshe kwi-mesh entsha. (umnatha omdala ngaphandle komonakalo emva komlilo, usenako ukuqhubeka nokusebenzisa), waphinda wavula igranulator ye-extrusion, izinto zeplastiki ekrwada inkampani njengesixhobo esitsha, Ngokusisiseko, inokutshintshwa kanye ngosuku. Emva kwe-extrusion, izinto eziphathekayo kufuneka zomiswe ngokufanelekileyo emoyeni ngokwemeko yangempela yezinto ngaphambi kwe-granulation.
Injongo yale nkqubo kukuguqula imathiriyeli ekrwada. Qaphela: Ubushushu bobushushu bemathiriyeli ekrwada kufuneka bulungelelaniswe ngokwezinto ezahlukeneyo ezikrwada.
I-Extruder granulator ine-screw ephindwe kabini kunye ne-screw points enye, ukusika okubandayo kunye namanqaku ashushu, inkampani isebenzisa i-granulator yokusika ebandayo.
3. I-powder yokugaya yinkqubo efunekayo ngaphambi kokuveliswa kwemveliso ngenxa yokuba izinto ezisetyenziselwa ukuvelisa i-powder material, kwaye izinto ezithengwayo ezithengiweyo yimarike ziyi-granule. Emva kokuba umqhubi wegranulator ehlola ukuba akukho nto yangaphandle kumatshini, i-granular material emva kokuba i-granulation ifakwe kwi-hopper, umatshini wokugaya uqalisiwe, kwaye isantya sokutya silungiselelwa ukugaya. Emva kokusila, izinto eziluhlaza ziya komiswa ngokufanelekileyo, kwaye ubushushu bokomisa abuyi kudlula i-30 ℃.
Le nkqubo igxininise kumgangatho wokugaya umgubo, ubungakanani be-particle ye-30 ~ 60 ye-mesh, iinqununu ezijikelezayo, akukho mida, iikona, i-flake, i-trailing particles.
Ixesha lokuposa: Oct-28-2022