Roto - moulded nkoj, raws li cov khoom siv hluav taws xob zoo li qub, thiab cov khoom zoo nkauj, corrosion tsis kam, thiab kev koom ua ke. Lawv cov synthesis feem ntau nyob rau ntawm cov txheej txheem molding, uas cuam tshuam nrog pwm yas thiab ua kom kawg rau cov khoom lag luam nrog cov khoom siv nyuaj. Kab lus no yuav nthuav qhia cov txheej txheem zoo nkauj tshaj plaws roto {{} moulding process tswj, thiab - ua cov txheej txheem.
Cov Khoom Siv Raw thiab Pretreatment
Cov kev ua tau zoo ntawm Roto - moulded nkoj feem yog muaj nyob rau ntawm cov khoom siv yas uas tau xaiv. Feem ntau siv roto - moulding raw khoom muaj xws li {}} kub} ntev (LLDPE), thiab polypropylene (PP). Cov ntaub ntawv no muaj cov tshuaj zoo nkauj thiab cuam tshuam tsis kam, ntev}} huab cua huab cua, av noo, thiab cov kev kub siab ntawm cov tub rog marine.
Thaum lub sij hawm raw khoom pretreatment, nws yog ib qho tseem ceeb kom paub meej tias qhov dryness ntawm cov pellets yas los tiv thaiv kev ua kom muaj cov teeb meem lossis cov khoom siv hluav taws xob. Feem ntau, cov ntaub ntawv raw yuav tsum tau qhuav hauv qhov cub ntawm 60-80℃rau 2-4 teev, nyob ntawm cov khoom siv kev hygroscopicity. Ib qho ntxiv, cov quav ntxiv xws li antioxidants, uv nqus, lossis txhawb nqa cov pob tawb (xws li cov iav fiber ntau) yuav ntxiv rau cov khoom siv tshuab hluav taws xob lossis UV tiv thaiv ntawm lub rotomolded.
Tswj tswj ripomolding txheej txheem tsis
Cov tub ntxhais ntawm rotomolding li cov lus dag hauv cov txheej txheem hluav taws xob thiab cov txheej txheem cua sov, thiab cov txheej txheem cua sov ncaj qha cuam tshuam qhov zoo ntawm cov khoom tiav. Cov tsis muaj xws li cov cua kub kub, kev hloov chaw nrawm, txoj kev ua kom nrawm, thiab kev siv pwm.
1.Qhov kub: rotomrationaling feem ntau siv cua kub cua kub lossis cua sov infrared. Cov pwm kub yuav tsum tau hloov kho raws li cov yam ntxwv ntawm cov khoom siv raw. Piv txwv li, cov kev ua ntsuas ntsuas qhov ntsuas kub rau HDPE yog 180-220 degree, thaum PP yuav tsum muaj qis dua qis dua qhov kub me (kwv yees li 160-200 degree). Ntau dhau qhov kub tsawg yuav ua rau tsis tiav melting ntawm cov yas, cuam tshuam lub zog ntawm cov khoom tiav; Kev kub siab dhau yuav ua rau cov khoom siv hluav taws xob.
2. Cov pwm nrawm: Cov pwm feem ntau rotates hauv ob qho lus qhia (kab rov tav thiab ntsug), tswj ntawm 5-20 rpm. Ib mais kev nrawm nrawm txawm tias kev faib cov ntaub ntawv yas, zam thaj chaw ntawm cov tuab tuab lossis nyias nyias.
3.Cooling txoj kev: Tom qab molding, pwm yuav tsum tau txias sai siv huab cua lossis dej txias. Txawm li cas los xij, tus nqi cua txias yuav tsum muaj mob me ntsis los tiv thaiv kev deformation lossis tawg ntawm ntu kev ntxhov siab.
4. Tu lub sijhawm voj voog: Tag nrho cov txheej txheem rotomolding txheej txheej kav 10-30 feeb, nyob ntawm qhov tuab ntawm ib feem thiab cov khoom siv.
Post - kev ua thiab kev ua haujlwm zoo
Tom qab qhov kev rhuav tshem, cov chaw rotomhol tau tuaj yeem xav tau tshaj tawm - ua los txhim kho lawv cov kev ua tau zoo. Cov Lus Tshaj Tawm - Cov kauj ruam txheej txheem suav nrog:
• Tiav thiab Polishing: Tshem tawm Flash, Burrs, lossis thaj chaw tsis sib xws los xyuas kom muaj qhov chaw du.
• Kev Kho Cua sov: qee qhov siab- Kev ua yeeb yam rotomolded qhov yuav tsum tau txhawb kev ntxhov siab thiab txhim kho kev ruaj ntseg sab hauv.
• Cov txheej npoo npoo: rau qhov uas yuav tsum tau hnav ntau dua lossis corrosion tsis kam, kev tiv thaiv kev tiv thaiv xws li epoxy lossis polyurethane tuaj yeem siv tau.
Tsis tas li ntawd, kev tswj hwm zoo yog qhov tseem ceeb, xav tau qhov ntsuas hluav taws xob, thiab cov khoom siv tuab ntawm cov khoom siv ntawm cov tawv nqaij ua haujlwm ntawm kev lag luam marine.
Tag
Cov txheej txheem synthesis rau rotomolded marine seem, sib xyaw tswj cov txheej txheem kev ua kom zoo, thiab kev tswj cov txheej txheem yas ua rau cov khoom siv marine. Nrog rau kev nce qib hauv cov ntaub ntawv kev tshawb fawb thiab kev siv tshuab kev sib xyaw, muab cov kev daws teeb meem zoo dua qub thiab ua kom zoo dua qub {{}} cov nkoj resistant.
