lenu abẹrẹ

Ohun ti o jẹ rim

Rim jẹ titun kan ilana ọna fun producing tobi iwọn ati ki o tobi opoiye awọn ọja nyara. Rim ilana jẹ monomer tabi ami-polima (PU ohun elo) ni omi ipinle pẹlu kan ti o yẹ ti won nipa awọn iwon fifa dapọ ni dapọ ori ti a m. Lẹhin ti awọn adalu wa ni itasi sinu m labẹ kan kekere titẹ / yara otutu ayika, o yoo dekun esi ki o si agbelebu-sisopo curing. Lẹhin mẹwa siwaju sii iṣẹju, o yoo wa ni solidified, ati ki o tu o lati m, ti o apakan jẹ rim ọja. Yi ilana le ti wa ni yepere bi: ipamọ, wiwọn, arabara, m nkún ati curing, demould ati ranse si-processing.

Awọn ilana ti Lenu Abẹrẹ Mọ

1) Ibi
meji aise omi awọn ohun elo ti lo ninu awọn rim ilana won ti o ti fipamọ ni meji ifiomipamo ni awọn iwọn otutu, ifiomipamo ni commonly titẹ ha. Ni igbáti, stoste maa ni 0.2 ~ 0.3 MPA kekere titẹ ni awọn ifiomipamo, ati kaa kiri nigbagbogbo ninu awọn ifiomipamo, ooru exchangers ati dapọ ori. Bi fun polyurethane, awọn apapọ otutu ti stoste ni 20 ~ 40 ℃, awọn iwọn otutu iṣakoso yiye ni ± 1 ℃.
2)Measurement
Measurement will be finished by the metering pump , and requirements for measuring accuracy is at least be ± 1.5%, and the best control should at ± 1%.
3) Hybrid
In RIM process , product quality is largely depend on the quality of mixture in the mixing head , so does the production capacity . The normal pressure is about 10 Mpa in order to get the better effect .
4) Mold falling
The characteristic of RIM process is the material flow rate is very high .Then stoste’s viscosity can not be very high .Such as the viscosity of polyurethane mixture is about 0.1 Pa s.and flow rate control at 600 g/s in mold falling .
5) Curing.
Polyurethane two-component mixture have very high reactivity after injected in the mold ,so it complete curing in ten more minutes .But plastic’s conductivity is not good , so most heat can not release from a large chemical reaction condition , so that the outside temperature are higher than inside, so the curing development is from inside to outside .
6) Demold 
Demold also means we need release the cured part from the mold , and that part is the RIM product . And more quantity can be produced as the above process .
7) Post-Process 
It is according to customers’requirements . 

Awọn ohun elo ti fun rim

Gbogbogbo wọpọ resini: polyurethane resini, fainali ester, amide ester resini, unsaturated resini, iposii resini ati ibile eroja ohun elo, ati be be 
Deede ohun elo ti: HD-PU4210, DCP-rim, AXSON-rim 875, ati be be lo.

PS: Awọn curing akoko ti rim ilana jẹ o kun nipa awọn igbáti awọn ohun elo ti agbese ati ọja iwọn ipinnu. Ni afikun, rim awọn ọja nilo nlo lori keji curing lẹhin ti Tu lati m. Ati bi rim ilana ni sare (15-30 iṣẹju / nkan) ati ki o ga-konge, o ipele ti lati gbe awọn ti o tobi opoiye ati ki o tobi iwọn ọja, ati awọn iwọn ti tobi simẹnti apakan ni 2000mmX1200mmX1000mm, fun 10KG.

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