1. Chochitika cha Chilema**
Panthawi yopangira jekeseni, zigawo zina za nkhungu sizingakhale ndi mphamvu zokwanira.Mapulasitiki osungunuka akayamba kuzizira, malo okhala ndi makoma akuluakulu amachepa pang'onopang'ono, zomwe zimapangitsa kuti zikhale zovuta.Ngati kulimba kwa pamwamba kwa chinthu chopangidwa sikukwanira ndipo sikunaphatikizidwe ndi zinthu zosungunuka zokwanira, zizindikiro zamadzimadzi zimawonekera.Chodabwitsa ichi chimatchedwa "sink marks".Izi zimawonekera m'magawo omwe pulasitiki yosungunula imawunjikana mu nkhungu komanso pazigawo zokhuthala, monga nthiti zomangirira, mizati yothandizira, ndi mphambano zake ndi zinthuzo.
2. Zomwe Zimayambitsa ndi Njira Zothetsera Zizindikiro za Sink
Maonekedwe a sinki pazigawo zopangidwa ndi jakisoni sizimangowonjezera kukongola komanso kusokoneza mphamvu zamakina.Chodabwitsa ichi chimagwirizana kwambiri ndi zinthu zapulasitiki zomwe zimagwiritsidwa ntchito, njira yopangira jakisoni, komanso mapangidwe azinthu zonse ndi nkhungu.
(i) Zokhudza Zinthu za Pulasitiki
Mapulasitiki osiyanasiyana ali ndi mitengo yocheperako.Mapulasitiki a crystalline, monga nayiloni ndi polypropylene, ndi omwe amatha kuyika zizindikiro.Poumba, mapulasitikiwa, akatenthedwa, amasintha kupita kumalo oyenda ndi mamolekyu okonzedwa mwachisawawa.Akabayidwa mu nkhungu yozizira kwambiri, mamolekyuwa amalumikizana pang'onopang'ono kuti apange makhiristo, zomwe zimapangitsa kuchepa kwakukulu kwa voliyumu.Izi zimabweretsa miyeso yaying'ono kuposa momwe idalembedwera, motero zimayambitsa "zizindikiro zozama."
(ii) Kuchokera pa Njira Yopangira jekeseni
Pankhani ya jekeseni wa jekeseni, zomwe zimayambitsa zizindikiro za kumira zimaphatikizapo kusagwira bwino, kuthamanga kwa jekeseni pang'onopang'ono, nkhungu yotsika kwambiri kapena kutentha kwa zinthu, komanso nthawi yokwanira yogwira.Chifukwa chake, pokhazikitsa magawo akuumba, ndikofunikira kuwonetsetsa kuti mikhalidwe yoyenera imawumbidwa komanso kukakamiza kokwanira kuti muchepetse zizindikiro zakuya.Nthawi zambiri, kutalikitsa nthawi yogwira kumatsimikizira kuti mankhwalawa ali ndi nthawi yokwanira yozizirira komanso zowonjezera zowonjezera.
(iii) Zogwirizana ndi Zogulitsa ndi Mold Design
Choyambitsa chachikulu cha sink marks ndi makulidwe a khoma la pulasitiki.Zitsanzo zachikale zimaphatikizapo mapangidwe a sink marks kuzungulira nthiti zolimbitsa ndi mizati yothandizira.Kuphatikiza apo, mapangidwe a nkhungu monga kapangidwe ka makina othamanga, kukula kwa zipata, komanso kuzizira kozizira kumakhudza kwambiri malonda.Chifukwa cha kuchepa kwa kutentha kwa mapulasitiki, zigawo zomwe zili kutali ndi makoma a nkhungu zimazizira pang'onopang'ono.Chifukwa chake, payenera kukhala zinthu zokwanira zosungunula zodzaza maderawa, zomwe zimafuna phula la makina omangira jakisoni kuti likhalebe ndi mphamvu panthawi ya jekeseni kapena kugwira, kuteteza kubwerera.Mosiyana ndi zimenezi, ngati othamanga nkhungu ndi woonda kwambiri, motalika kwambiri, kapena ngati chipatacho chiri chaching'ono kwambiri ndipo chimazizira mofulumira kwambiri, pulasitiki yokhazikika imatha kulepheretsa wothamanga kapena chipata, zomwe zimapangitsa kuti pakhale kutsika kwa nkhungu, zomwe zimafika pachimake. zizindikiro.
Mwachidule, zomwe zimayambitsa zizindikiro zakuya ndi monga kusadzaza nkhungu, kusakwanira kwa pulasitiki yosungunuka, kupanikizika kosakwanira kwa jekeseni, kusagwira bwino, kusintha msanga kuti mukhale ndi mphamvu, nthawi yochepa kwambiri ya jekeseni, jekeseni pang'onopang'ono kapena mofulumira (yomwe imatsogolera ku mpweya wotsekeka), ocheperapo kapena osakwanira. zitseko (mu nkhungu zokhala ndi zingwe zambiri), zotchinga za nozzles kapena chowotcha chosagwira ntchito, kutentha kosayenera kusungunuka, kutentha kwa nkhungu (kumapangitsa kuti nthiti kapena mizati ikhale yopindika), kusatuluka bwino m'zigawo za sink mark, makoma okhuthala panthiti kapena mizati, osavala -kubweza ma valve omwe amatsogolera kubweza kwambiri, malo osayenera pachipata kapena njira zazitali, komanso othamanga kwambiri kapena othamanga kwambiri.
Kuti muchepetse zizindikiro zakuya, njira zotsatirazi zitha kukhazikitsidwa: kukulitsa kuchuluka kwa jekeseni wosungunuka, kukulitsa kugunda kwa metering, kukulitsa kuthamanga kwa jakisoni, kukweza kupanikizika kapena kutalikitsa nthawi yake, kuwonjezera nthawi ya jekeseni (kugwiritsa ntchito pre-ejection), kusintha jekeseni. liwiro, kukulitsa kukula kwa chipata kapena kuwonetsetsa kuyenda bwino mu nkhungu zamitundu yambiri, kuyeretsa mphuno ya zinthu zilizonse zakunja kapena kusintha magulu otenthetsera osokonekera, kusintha mphuno ndikuyiteteza bwino kapena kuchepetsa kupsinjika, kukhathamiritsa kutentha kwasungunuka, kusintha kutentha kwa nkhungu, kuganizira kuzirala kwa nthawi yozizira, kuyambitsa njira zolowera m'malo ozama, kuwonetsetsa kuti makulidwe a khoma (pogwiritsa ntchito jekeseni wothandizidwa ndi gasi ngati kuli kofunikira), m'malo mwa mavavu osabwerera, kuyika chipata pamalo okhuthala kapena kuwonjezera kuchuluka kwa zipata, ndikusintha othamanga. miyeso ndi utali.
Location: Ningbo Chenshen Pulasitiki Makampani, Yuyao, Ningbo, Zhejiang Province, China
Tsiku: 24/10/2023
Nthawi yotumiza: Oct-30-2023