Qhov no yog cov txheej txheem ntawm cov khoom noj khoom haus lub thawv tsim khoom lag luam, koj tuaj yeem xa mus kawm paub txog kev paub txogrotomolding.
Rotomolding yog ib txoj kev tshiab thiab siab heev ntawm kev ua cov yas, uas yog tus cwj pwm los ntawm:
1, haum rau kev ualoj hollow khoom, zoo litank dej, roj tank, cov khoom siv ua si loj, cais phab ntsa, thiab lwm yam.
2,Tus nqi ua haujlwm tsawg, tshwj xeeb tshaj yog tus nqi pwm tsuas yog 1/3 ntawm kev txhaj tshuaj pwm.Nws qhov tsis zoo yog qhov kev thov siab rau cov khoom siv raw, thiab cov khoom tiav ua tiav yog qhov tsis zoo piv nrog kev txhaj tshuaj molding.
Nws cov txheej txheem ntau lawm yog raws li nram no:
ib ,Kev npaj cov khoom siv raw
(一) Cov khoom siv raw raurotomolding ua ntau lawm
1.melting Performance index feem ntau tsis ntau tshaj 5.0g/10min.
2. hmoov particles 30 ~ 60 mesh (round particles tsis tuaj yeem muaj ntau tus Tsov tus tw thiab prisms, flake particles).
3.qhuav.
(二) Cov kev xav tau ntawm cov khoom siv raw rauRolling plastics ntau lawm
Ib txoj hlua-qib LLDPE yog ib qho nyuaj los xyuas kom meej cov kev cai tshwj xeeb ntawm cov khoom (xws li cov thawv ua tsov rog uas tsim los ntawm peb lub tuam txhab), yog li cov ntaub ntawv sib xyaw (tseem hu ua kev hloov kho yas) feem ntau yog siv, xws li 7042 thiab UR644 cov ntaub ntawv nrog fluidity zoo. tab sis tsis muaj zog txaus.Yog li txhawm rau kom ntseeg tau qhov zoo ntawm cov khoom tshwj xeeb, 7042, 6090, 500S lossis UR644, A760.Cov khoom lag luam tshwj xeeb raw cov mis yog tau tom qab kaum tawm lab ntawm kev sim kev tshawb fawb, tsis pub lwm tus paub, yog patented, leej twg tsis tuaj yeem hloov cov mis yam tsis muaj kev sim.
Ib qho khoom tshwj xeeb kuj yuav tsum tau ntxiv raws li kev ua tau zoo ntawm cov khoom, qee tus tswv, cov tshuaj tua kab mob antioxidant, xws li kev tsim cov xim los koom nrog cov yob yas qib master.Cov khoom siv yog siv sab nraum zoov rau lub sijhawm ntev, ntxiv cov tshuaj tua kab mob antioxidant, tsim cov khoom siv hluav taws xob, cov tshuaj tiv thaiv kev laus, cov neeg txhawb nqa thiab lwm yam.
(三) cov txheej txheem thev naus laus zis tshwj xeeb
1. Raws li kev npaj ntawm tus thawj coj, txhua yam ntawm raw cov ntaub ntawv thiab accelerators teev nyob rau hauv cov khoom formula yog muab tso rau hauv lub tov khoom los ntawm tshwj xeeb-tswj neeg ua hauj lwm, thiab lub tov khoom yog tov nyob rau hauv thaum pib ntawm lub tov khoom.Lub sij hawm sib tov yog> 10 feeb (lub tov khoom tau muab faib ua cov khoom sib tov zoo tib yam thiab cov khoom siv siab ceev, thiab nws raug pom zoo kom siv cov khoom siv high-speed yog tias cov nyiaj tso cai. Lub ntsiab lus tseem ceeb ntawm cov txheej txheem no yog qhov sib piv ntawm txhua yam. cov khoom siv raw, uas yuav tsum tau siv nrog cov cuab yeej tsim nyog.
2, extrusion granulation tshuab neeg teb xov tooj nrog tes disk lub cev muaj zog pulley, lub tshuab tuaj yeem khiav tau yooj yim, cov khoom siv tom qab sib xyaw ua ke rau hauv lub tshuab granulation, lub cev muaj zog khawm thiab lwm yam.Tom qab lub cev muaj zog ammeter nce, kaw lub cua sov khawm thiab kho qhov kub ntawm qhov cua sov.Kuv lub tuam txhab yuav lub tshuab granulating yog muab faib ua plaub qhov cua sov, los ntawm lub hopper rau pem hauv ntej lem: txhua cheeb tsam, feem ntau 150 ℃.Qhov thib ob cheeb tsam yog 180 ℃.Tom qab tso qhov chaw thib peb 180 ℃.Lub qhov ntswg yog 190 ℃.
Tom qab cov khoom siv extruded yog txias los ntawm lub tank dej, nws tau muab tso rau hauv lub granulator thiab lub hwj chim hloov ntawm lub granulator raug kaw.Lub tshuab pelleting yuav cia li rub mus rau hauv cov khoom siv pelleting.Ua tus neeg teb xov tooj yuav tsum saib xyuas kev ua haujlwm ntawm extruder, yog tias pom tias yuav tsum tau nyem tawm extruder qhov cua, yuav tsum tau txiav tawm tam sim ntawm qhov hluav taws xob thiab nyob twj ywm tom qab lub tshuab tsis ua haujlwm tag nrho ntawm lub qhov ntswg extrusion tuag, hloov mus rau hauv lub mesh tshiab. (laus mesh yam tsis muaj kev puas tsuaj tom qab hluav taws, tseem tuaj yeem siv txuas ntxiv), rov qhib extrusion granulator, yas raw khoom lub tuam txhab ua cov khoom siv tshiab, Hauv txoj cai, nws tuaj yeem hloov pauv ib hnub ib zaug.Tom qab extrusion, cov khoom yuav tsum tau ua kom cua qhuav raws li qhov tseeb ntawm cov khoom ua ntej granulation.
Lub hom phiaj ntawm cov txheej txheem no yog hloov cov ntaub ntawv raw.Lus Cim: Cov cua kub ntawm cov khoom siv raw yuav tsum raug kho raws li ntau yam khoom siv raw.
Extruder granulator muaj ob lub hau ntswj thiab ib qho ntsia hlau cov ntsiab lus, txias txiav thiab cov ntsiab lus kub, lub tuam txhab siv txias txiav granulator.
3. Kev sib tsoo hmoov yog txheej txheem tsim nyog ua ntej dov ntau lawm vim tias cov khoom siv hauv cov khoom siv dov yog cov khoom siv hmoov, thiab cov khoom siv raw khoom yuav los ntawm kev ua lag luam yog cov khoom siv granule.Tom qab tus neeg teb xov tooj granulator kuaj xyuas tias tsis muaj qhov txawv teb chaws hauv lub tshuab, cov khoom siv granular tom qab granulation tau muab tso rau hauv lub plhaw, lub tshuab sib tsoo pib, thiab kev pub noj ceev yog kho rau kev sib tsoo.Tom qab sib tsoo, cov khoom siv raw yuav tsum tau qhuav raws li qhov tsim nyog, thiab qhov kub ntawm qhov ziab yuav tsum tsis pub tshaj 30 ℃.
Cov txheej txheem no tsom rau qhov zoo ntawm cov hmoov sib tsoo, qhov loj me ntawm 30 ~ 60 mesh, puag ncig cov khoom, tsis muaj npoo, kaum, flake, trailing hais.
Post lub sij hawm: Oct-28-2022