Posankha ma caster, "kukana kuvala" nthawi zambiri kumaonedwa ngati chizindikiro, koma chomwe chimatsimikizira nthawi ya moyo wa gudumu nthawi zambiri ndi "zinthu + momwe zimagwirira ntchito". Ngakhale pa mtundu womwewo wa gudumu lapadziko lonse, nayiloni (PA), polyurethane (PU), ndi rabara zimawonetsa kukana kuvala kosiyana, kuchuluka kwa phokoso, kufewa pansi, mphamvu yonyamula katundu, komanso kusinthasintha kwa chilengedwe. Kutengera ndi zomwe zalembedwa koyambirira, nkhaniyi ikuphatikiza zinthu zofunika kwambiri, mfundo zofananira, ndi malingaliro wamba kuti zithandizire kusankha kwanu mwachangu m'malo monga mafakitale, nyumba zosungiramo katundu, zipatala, ndi ma eyapoti.
1. Kodi n’chiyani chimachititsa kuti khungu lisamawonongeke? Choyamba, tiyeni tifotokoze zinthu zinayi izi zomwe zimakhudza khungu:
1). Zipangizo zomangira pansi ndi kuuma kwake: Simenti/lasphalt yolimba imapangitsa kuti zinthu ziwonongeke mwachangu; pansi posalala monga epoxy/PVC sipawonongeka kwambiri, koma imakhudzidwa kwambiri ndi "mabala/mikwingwirima yakuda".
2). Kuchuluka kwa katundu ndi kagwiritsidwe ntchito: Kulemera kosasunthika (kuimika magalimoto) ≠ katundu wosinthasintha (kukankhira). Kuzungulira pafupipafupi, kuzungulira pamalo, ndi kudutsa malire/malo osafanana kudzawonjezera kwambiri kuwonongeka ndi kung'ambika kwa pamwamba pa gudumu.
3). Liwiro ndi kutentha: Mukagwira ntchito pa liwiro lalikulu, mutagwira ntchito mtunda wautali, kapena kutentha kwambiri, kutentha komwe kumachitika pamwamba pa gudumu kumatha kusokoneza kuuma kwa chinthucho komanso kukhazikika kwa kuwonongeka kwake.
4). Mankhwala ndi Malo Oyera: Madontho a mafuta, zotsukira za asidi wofooka ndi alkali, komanso kutsuka konyowa kumatha kusokoneza kukalamba kwa zinthu komanso moyo wa mabearing/zothandizira, zomwe zimapangitsa kuti "mukamazigwiritsa ntchito kwambiri, gudumu limakhala lokwera mtengo kwambiri."
2. Kuyerekeza kwa Kukana Kuvala ndi Makhalidwe Abwino a Zipangizo Zitatu
Kuyerekeza kotsatiraku kumachokera ku zipangizo zodziwika bwino za mafakitale/malonda. Kusiyana kungachitike chifukwa cha mapangidwe osiyanasiyana, kuuma, njira zosiyanasiyana (kupangira jakisoni/kuponya/kuvulcanization), m'lifupi mwa mawilo, ndi mawonekedwe a mabearing. Ndikofunikira kunena za kuyesa kwenikweni kwa zitsanzo ndi momwe ntchito ikuyendera.
| Zipangizo | Kusavala | Phokoso/Kuchepetsa Kugwedezeka | Chitetezo cha Pansi | Kutha Kunyamula ndi Kukana Kuzungulira | Kugwiritsa ntchito |
| Nayiloni (PA) | Yokwera (yolimba kwambiri, yosatha komanso yokhazikika) | Phokoso ndi lalikulu, ndipo kuyamwa kwa kugwedezeka ndi kwapakati | Sikoyenera pansi lofewa, lokhala ndi zolembera/zolemba | Kukana kugwedezeka kochepa, koyenera mtunda wautali; komabe, kumakhudzidwa kwambiri mukakumana ndi malo osalinganika | Kusamalira nyumba zosungiramo zinthu, pansi pamiyala, njira zakunja/zochitira misonkhano, osamva phokoso |
| Polyurethane (PU) | Yapamwamba (yosatha kusweka, yosagwa, komanso yogwira ntchito bwino kwambiri) | Phokoso lochepa, kuyamwa bwino kwa mantha | T ndi wochezeka ndipo ali ndi mabala akuda ochepa (kutengera njira yogwiritsira ntchito) | Ili ndi mphamvu yonyamula katundu wambiri, imafuna khama lochepa kuti ikankhire, ndipo imapereka magwiridwe antchito abwino. | Yoyenera zipatala, ma eyapoti, masitolo akuluakulu, ndi mafakitale, imafuna kulimba komanso kugwira ntchito chete pamene ikupereka chitetezo cha pansi. |
| Rabala | Pakati mpaka pamwamba (kukana kuvala kumadalira njira, ndi kukondera kusinthasintha) | Phokoso lochepa, limayamwa bwino kugwedezeka. Ndi lochezeka, silimawononga nthaka mosavuta | Ndi wochezeka, sakonda kukanda pansi, koma njira zina zingasiye zizindikiro zakuda | Kukana kwa kugwedezeka kumakhala kokwera kwambiri, zomwe zimapangitsa kuti kukankha mtunda wautali kukhale kovuta kwambiri; kukana kwa mafuta ndi mankhwala kuyenera kutsimikiziridwa | Muzochitika zomwe zimafunika kuchepetsa kugwedezeka/phokoso kwambiri, nthaka imafunika chitetezo, ndipo pali mipata yambiri ndi zopinga zazing'ono zoyendetsera. |
Nthawi yotumizira: Marichi-05-2026
