Ukusabela Injection

Kuyini RIM

RIM kuyinto entsha inqubo indlela ngokukhiqiza usayizi esikhulu futhi imikhiqizo omkhulu ubuningi ngokushesha. inqubo RIM kuyinto monomer noma pre-polymer (PU izinto) esimweni liquid nge Ingxenye ezithile kukalwa the metering futha kuhlangana e ukuxuba Inhloko isikhunta. Ngemva ingxube injected ku isikhunta ngaphansi ongaphakeme ingcindezi / Igumbi lokushisa imvelo, kuyoba ngokushesha futhi cross-ngokuxhumanisa sokwelapha. Ngemuva kwemizuzu engu-ngaphezulu eziyishumi, kuyothiwa eqina, bese ukuyikhulula kusukela isikhunta, ukuthi ingxenye kuyinto umkhiqizo RIM. Le nqubo kungenziwa lula njengoba: isitoreji, nesilinganiso, hybrid, isikhunta ukugcwaliswa sokwelapha, demould nangemuva ukucubungula.

Inqubo Reaction Injection Molding

1) Isitoreji
amabili okuhlaza ketshezi ezisetshenziselwa inqubo RIM zigcinwe ezimbili kwesigubhu okushisa ezithile, ichibi kuyinto ngokuvamile ingcindezi isitsha. Ngo udini, stoste ngokuvamile 0.2 ~ 0.3 MPA ingcindezi ongaphakeme echibini, futhi afundwa njalo echibini, ukushisa kanye ukuxuba ikhanda. Kepha polyurethane, izinga lokushisa isilinganiso stoste 20 ~ 40 ℃, ukunemba ukulawula izinga lokushisa ± 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 . 

Material ngoba RIM

Jikelele resin ezivamile: polyurethane resin, vinyl ester, amide ester resin, resin unsaturated, epoxy resin Traditional impahla esiyinhlanganisela, njll 
Ngokuvamile impahla: HD-PU4210, DCP-RIM, AXSON-RIM 875, njll.

PS: Isikhathi angawokuphulukisa inqubo RIM ngokuyinhloko yisinqumo ekwakhiweni udini impahla kanye nosayizi umkhiqizo. Ngaphezu kwalokho, imikhiqizo RIM akudingeki kwenzekani angawokuphulukisa yesibili ngemva kokukhululwa kusukela isikhunta. Futhi njengoba inqubo RIM kuyashesha (imizuzu 15-30 / ucezu) kanye ephezulu ukucacisa, kulingane ukukhiqiza inqwaba futhi omkhulu imikhiqizo usayizi, kanye nobukhulu enkulu ekusakazeni part 2000mmX1200mmX1000mm, ngoba 10kg.

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