Mu malo amakono a mafakitale ndi malonda, Magudumu opangidwa ndi zinthu zosiyanasiyana amagwiritsidwa ntchito kwambiri m'njira zosiyanasiyana chifukwa cha mawonekedwe awo apadera. Kuyambira magudumu a nayiloni, magudumu a nayiloni (MC) opangidwa ndi chitsulo. Kufikira matayala olimba a rabara, magudumu ofewa a rabara. Kenako mpaka magudumu a rabara opangidwa ndi chitsulo, magudumu a rabara opangidwa ndi chitsulo cho ...
Gudumu la polypropylene, lomwe limadziwikanso kuti gudumu la PP
Polypropylene ndi chinthu chopangidwa ndi thermoplastic chomwe chimadziwika ndi mphamvu zake zotsutsana ndi kugwedezeka, kukana dzimbiri, kukana kukangana, kusalemba, kusapaka utoto komanso kusawononga. Chinthuchi sichimanunkhira, sichimasakaniza komanso sichimalimbana ndi zinthu zambiri zowononga. Komabe, sichili ndi zinthu zowononga kwambiri komanso zinthu zowononga. Mawilo a polypropylene ndi oyenera kutentha kuyambira -20°C mpaka +60°C. Komabe, kutentha kozungulira kuli pamwamba pa +30°C, mphamvu yake yonyamulira idzachepa.
Gudumu la Polyurethane
Polyurethane (TPU) ndi polyurethane yopangidwa ndi thermoplastic. Mawilo awa ali ndi polypropylene kapena nayiloni. Polyurethane imapangidwanso m'mphepete mwa pakatikati kuti ipange nkhope ya gudumu. Mawilo a polyurethane ali ndi mphamvu zabwino kwambiri zoteteza pansi, kuyamwa kugwedezeka, kukhala osalemba, osapaka utoto, otanuka, osakangana komanso osagonjetsedwa ndi dzimbiri ndi zinthu zambiri zamphamvu. Kuphatikiza apo, imalimbananso ndi madzi otentha ndi nthunzi yamadzi pansi pa mikhalidwe ina. Kukana kwake kozungulira ndi kochepa. Yoyenera mitundu yosiyanasiyana ya pansi. Mitundu ingapangidwe mukapempha. Kukwaniritsa zosowa zosiyanasiyana. Mawilo a polyurethane opangidwa ndi thermoplastic ndi oyenera kutentha kuyambira -45 °C mpaka +90 °C. Komabe, mphamvu yonyamula katundu imachepa kutentha kozungulira pamwamba pa +35 °C.
Wheel ya Elastomer ya Polyurethane (CPU) Yopangidwa ndi Cast
Ma elastomer a polyurethane opangidwa ndi cast polyurethane (CPUs) ndi ma elastomer a polyurethane opangidwa ndi thermosetting omwe amapangidwa ndi mankhwala. Zipangizo zoyambira zimaphatikizapo polyester polyols, diisocyanates ndi glycols. Mtundu uwu wa gudumu umagwiritsa ntchito chitsulo kapena aluminiyamu ngati core, ndipo polyurethane imathiridwa m'mphepete mwa core. Pamwamba pa gudumu limapangidwa ndi kuuma pa kutentha kwakukulu. Mawilo a polyurethane othiridwa amateteza kwambiri nthaka, amayamwa kugwedezeka, samalemba, samadetsa, amakana kukangana, amasinthasintha bwino, amalimbana ndi dzimbiri ndi zinthu zambiri zamphamvu, amalimbana ndi UV. Kuphatikiza apo. Ali ndi chitonthozo chambiri chogwira ntchito, amakana kugwedezeka pang'ono. Amapanga kutentha pang'ono akamakumana ndi zinthu zosinthika. Mtundu wake ndi woyera. Ndi woyenera kutentha kuyambira -30°C mpaka +70°C. Mpaka +90°C kwa nthawi yochepa. Pa kutentha kozungulira pansi pa -10°C. Kulimba kwake kumagwira ntchito bwino kwambiri.
Wiri wina wa polyurethane (CPU) wopangidwa ndi pulasitiki
Mawilo a polyurethane (CPU) awa amachokeranso ku ma elastomer a polyurethane opangidwa ndi thermosetting omwe amapangidwa ndi chemical reaction. Amapangidwa ndi polyester polyols, diisocyanates ndi glycols. Ali ndi makhalidwe oteteza nthaka, osalemba, osapaka utoto, osagwirizana ndi friction, otanuka bwino komanso okana dzimbiri la zinthu zambiri zamphamvu. Amalimbananso ndi UV. Ali ndi digiri yochepa kwambiri ya deformation yokhazikika. Amalimbana ndi kugwedezeka kochepa. Amapanga kutentha kochepa akamakumana ndi dynamic loads. Ndipo amalimbana ndi hydrolysis. Amayenera makamaka kuthamanga kwambiri mpaka 16km/h. Mitundu imatha kusinthidwa ngati ipemphedwa. Kutentha komwe kumagwiritsidwa ntchito kuli pakati pa -45°C ndi +90°C, ndipo nthawi yochepa kwambiri ndi +90°C.
Wheel ya Polyurethane (PUE) Yopangidwa ndi Thovu
Mawilo a polyurethane (PUE) okhala ndi thovu. Amatchedwanso kuti polyurethane yokhala ndi povulo. Ndi polymer yopangidwa ndi block. Mawilo awa amadziwika ndi kusinthasintha kwabwino, ndipo ali ndi mawonekedwe abwino kuposa a ma elastomer ena okhala ndi povulo lofanana. Mawilo a polyurethane okhala ndi thovu ali ndi mawonekedwe abwino monga kukhuthala kochepa, kulemera kopepuka, kosavuta kupotoza, kosavuta kuumba, kukana kukhudza, kuyamwa bwino kwa mawu, kunyamula katundu wambiri, kukhuthala kwakukulu, kukana kupindika bwino, kukana kupsinjika pang'ono, kukana kusweka, kukana kung'ambika, kukana kung'ambika, kukana kunyezimira, kukana kuwala ndi kuyamwa kwa shock. Ali ndi mitundu yosiyanasiyana ya kuuma. Kuchokera ku Shore A10 mpaka 100, ndi yabwino kugwiritsa ntchito ngati zinthu zopangira caster.
Ponseponse. Mawilo onsewa ali ndi gulu lake la mawilo. Lililonse lili ndi makhalidwe akeake pankhani ya zinthu, magwiridwe antchito, ndi malo ogwirira ntchito. Posankha mawilo, tiyenera kupanga izi kutengera zochitika ndi zosowa zinazake kuti tiwonetsetse kuti gudumu loyenera kwambiri lasankhidwa. Chifukwa chake, limagwira ntchito bwino kwambiri.
Nthawi yotumizira: Marichi-04-2025