ndi
3. Kutentha kwapamwamba
Pamene kutentha ntchito ya mwatsatanetsatane akamaumba ndi tooling ndi apamwamba, kuuma ndi mphamvu adzachepa.Ndipo zimapangitsa kuti nkhungu iyambe kuvala kapena kulephera chifukwa cha pulasitiki.Choncho, nkhungu ayenera kukhala mkulu kutentha bata.Ikhoza kuonetsetsa kuti nkhungu imakhala ndi kuuma kwakukulu ndi mphamvu mu kutentha kwa ntchito.
4. Kukana kuzizira ndi kutentha kutopa
Zikhungu zina zili m'malo otenthetsa mobwerezabwereza ndi kuziziritsa pogwira ntchito.Kenako, kumapangitsa kuti pamwamba pabowo kukoka ndikugogomezera, zomwe zimapangitsa kuti pamwamba pakhale ming'alu ndikung'ambika.Zotsatira zake, zimawonjezera mphamvu yolimbana.Kupatula apo, imalepheretsa kusinthika kwa pulasitiki ndikuchepetsa kulondola kwake.Pomaliza, zimabweretsa kulephera kwa nkhungu.Kutopa kozizira komanso kotentha ndi chimodzi mwazinthu zoyambirira za kulephera kwa zida zotentha.
5. Kukana dzimbiri
Pogwira ntchito ya nkhungu zina, monga jekeseni wa pulasitiki, zimatulutsa mpweya woopsa kwambiri.Chifukwa mu pulasitiki muli chlorine, fluorine, ndi zinthu zina, zimawola ndikutsitsa HCI ndi HF.Iwo amakokolola patsekeke pamwamba, kuonjezera roughness pamwamba ndi kumawonjezera kuvala kulephera.