Ama-Casters afana “nezicathulo” zefenisha noma imishini, ngakho-ke ukukhetha izinto ezifanele kwenza kube lula ukuzihambisa nokuvikela umhlabathi. Ngezansi, sizothatha imizuzu emi-3 ukukufundisa ukuthi ungahlukanisa kanjani izinzuzo kanye nokungalungi kwezinto ezintathu eziyinhloko ze-nylon, i-polyurethane, kanye nerabha, ukuze sinikeze iziphakamiso zokuthenga ezisekelwe endaweni.
1. Ukubuka Konke Okubalulekile
1). Inayiloni (PA)
• Amagama angukhiye: Okunzima, Okunzima, Onomsindo
• Izici: Ubulukhuni obuphezulu, amandla amahle okuthwala imithwalo, kodwa umsindo omkhulu wokugingqika; ayigugi kodwa ayithambile. Ngemva kokuyicindezela isikhathi eside futhi iyidonsa ingase iklwebhe phansi ngokhuni noma ezindaweni zobumba.
• Isifaniso esibonakalayo: Njengamathayi emoto engekho emgwaqweni, ingathwala imithwalo esindayo kodwa iqhume kakhulu.
2). I-Polyurethane (PU)
• Amagama angukhiye: Okunwebekayo, Okuthule, Okuguquguqukayo
• Izici: Ukunwebeka phakathi kwepulasitiki nerabha, umsindo ophansi, ukumelana namafutha kanye ne-hydrolysis. Ifanelekela ama-workshop angenalo uthuli, ama-laboratory, izibhedlela, nezinye izindawo ezinezidingo eziqinile; ivumelana kahle nephansi, ayishiyi amabala amnyama.
• Isifaniso esibonakalayo: Njengengxenye ephakathi yezicathulo ezithambile, izinzile futhi ithule.
3). Irabha (NR/SBR)
• Amagama angukhiye: Athambile, Athambile, Angabizi
• Izici: Ivikela ngokwemvelo ekusheleleni ngokubamba okuqinile, ayisheleli lapho icindezela imithwalo esindayo; ukumuncwa kokushaqeka okwakhelwe ngaphakathi, kuthule futhi kuyonga imali. Izinkinga zifaka phakathi ukuguga ngaphansi kokukhanya kwelanga isikhathi eside kanye nokuguquguquka ngaphansi kwemithwalo esindayo.
• Isifaniso esibonakalayo: Njengamathayi athule emoto yomndeni, kudinga ukusunduzwa “buthule” futhi kugwema ukugcwala ngokweqile isikhathi eside.
2. Qonda ukuthi Ungakhetha Kanjani Ngetafula Elilodwa
| Izidingo Zesimo | Izinto Ezinconyiwe | Isizathu |
| Imithwalo emikhulu yefektri, phansi kwesimende | Inayiloni | Ithwala umthwalo oqinile, iphansi limelana nokuklwebheka |
| Izibhedlela, amalabhorethri, imihubhe yamahhotela | I-Polyurethane | Ukuvikelwa okuthule + phansi + ukumelana nokugqwala |
| Amakhabethe okugcina izinto zasekhaya, amakhabethe ehhovisi asebenza ngogesi | Irabha | Ithule, ayisheleli, ayilimazi phansi ngokhuni, ishibhile |
| ilanga elingaphandle kanye nokuchayeka emvuleni | I-Polyurethane (engamelani ne-UV eguquliwe) | Imelana nokuguga, irabha iyaqhekeka kalula ngaphansi kwelanga |
| Kudinga indawo yokubeka amabhuleki | Noma yikuphi okubalulekile, gxila esakhiweni samabhuleki | Isikhathi sokuphila kwephedi yamabhuleki sibaluleke kakhulu kunezinto ezisetshenziswayo ebusweni besondo |
3. I-Mnemonic Yokuthenga Yezinyathelo Ezintathu
1. Hlola phansi: Eziphansi zokhuni kanye ne-ceramics, ungakhetha i-PU noma irabha; eziphansi zesimende noma zensimbi, inayiloni ifanelekile.
2. Lalela imvelo: Kumahhovisi nasezibhedlela ezidinga “umsindo ongekho”, kudingeka kugwenywe inayiloni.
3. Kala umthwalo: Umthamo womthwalo we-caster eyodwa ≥ (isisindo semishini iyonke ÷ 3), okushiya isilinganiso esanele sokuphepha.
Isifinyezo emshweni owodwa
Imithwalo esindayo engenazo izinkinga zomsindo—khetha inayiloni; funa ukuthula nokuhlanzeka—khetha i-polyurethane; ufuna ukonga imali kodwa uthule—khetha irabha. Qondanisa izinto nezinto ezisetshenziswayo nesimo, futhi ama-caster ngeke esaba ukukhetha okunzima.
Isikhathi sokuthunyelwe: Septhemba-05-2025
