Makulidwe a khoma lazigawo zapulasitikiali ndi chikoka chachikulu pa khalidwe. Pamene makulidwe a khoma ndi ang'onoang'ono, kukana koyenda kumakhala kwakukulu, ndipo zimakhala zovuta kuti zigawo zazikulu ndi zovuta za pulasitiki zidzaze patsekeke. Miyeso ya makulidwe a khoma la zigawo zapulasitiki ziyenera kukwaniritsa izi:
1. Khalani ndi mphamvu zokwanira ndi kuuma;
2. Ikhoza kupirira kukhudzidwa ndi kugwedezeka kwa makina obowola pamene akugwetsa;
3. Ikhoza kupirira kulimbitsa mphamvu panthawi ya msonkhano.
Ngati makulidwe a khoma sichikuganiziridwa bwino pamapangidwe a magawo opangidwa ndi jekeseni, padzakhala mavuto akulu pambuyo pake.
Nkhaniyi ikuyang'ana pakupanga kwa magawo opangidwa ndi jakisoni wa thermoplastic, poganizira momwe makulidwe a khoma pa nthawi yozungulira, kuchulukira kwazinthu ndi tsamba lankhondo, komanso mtundu wapamtunda.
Kuchuluka kwa khoma kumabweretsa kuwonjezeka kwa nthawi yozungulira
Jekiseni kuumbidwa mbali pulasitiki ayenera utakhazikika mokwanira asanatulutsidwe mu nkhungu kupewa mapindikidwe mankhwala chifukwa ejection. Magawo okhuthala a zigawo za pulasitiki amafunikira nthawi yayitali yozizirira chifukwa cha kutsika kwa kutentha, zomwe zimafuna nthawi yowonjezerapo.
Mwachidziwitso, nthawi yozizirira ya gawo lopangidwa ndi jekeseni imayenderana ndi lalikulu la makulidwe a khoma pa gawo lokhuthala kwambiri la gawolo. Chifukwa chake, makulidwe a khoma lokulirapo amakulitsa mayendedwe a jakisoni, kuchepetsa kuchuluka kwa magawo omwe amapangidwa panthawi imodzi, ndikuwonjezera mtengo pagawo lililonse.
Zigawo zokhuthala ndizosavuta kupotoza
Pa jekeseni akamaumba ndondomeko, pamodzi ndi kuzirala, ndi shrinkage wa jekeseni kuumbidwa mbali zidzachitika. Kuchuluka kwa shrinkage kwa mankhwalawa kumagwirizana mwachindunji ndi makulidwe a khoma la mankhwala. Ndiko kunena kuti, pamene makulidwe a khoma ndi aakulu, shrinkage idzakhala yaikulu; kumene makulidwe a khoma amakhala ochepa, kuchepa kwake kudzakhala kochepa. Kuthamanga kwa magawo opangidwa ndi jakisoni nthawi zambiri kumachitika chifukwa cha kuchepa kwamitundu yosiyanasiyana m'malo awiri.
Ziwalo zopyapyala, zofananira zimakweza bwino pamwamba
Kuphatikizika kwa magawo oonda komanso okhuthala kumakhala kosavuta kuthamangitsa chifukwa kusungunula kumayenda mwachangu pagawo lakuda. Kuthamanga kumatha kupanga matumba a mpweya ndi mizere yowotcherera pamwamba pa gawolo, zomwe zimapangitsa kuti pakhale mawonekedwe osawoneka bwino. Kuphatikiza apo, mbali zokulirapo zimakondanso kukhala ndi dents ndi voids popanda nthawi yokwanira yokhala ndi kupanikizika.
Chepetsani makulidwe a gawo
Pofuna kufupikitsa nthawi yozungulira, kukonza kukhazikika kwa mawonekedwe, ndikuchotsa zolakwika zapamtunda, lamulo lofunikira la kapangidwe kake kakulidwe kagawo ndikusunga makulidwe ake kukhala owonda komanso ofanana momwe mungathere. Kugwiritsa ntchito ma stiffeners ndi njira yabwino yopezera kuuma kofunikira ndi mphamvu ndikupewa zinthu zonenepa kwambiri.
Kuphatikiza pa izi, miyeso ya gawo iyeneranso kuganizira zakuthupi za pulasitiki zomwe zimagwiritsidwa ntchito, mtundu wa katundu ndi ntchito zomwe gawolo lidzaperekedwa; komanso zofunikira zomaliza zomaliza ziyenera kuganiziridwanso.
Pamwambapa ndikugawana makulidwe a khoma la magawo opangidwa ndi jekeseni.
Nthawi yotumiza: Jul-07-2022
