I-Q235 plate noma i-Q345 plate kanye kungakhathali lula ukubona ngokwemvelo. Ubunzima obukhona kwezimbiza bungase kube nobunzima obukhona kwezinhlobo zokwelapha, kodwa kubenzelwe yizindlela ezahlukene zokulapha emva kokuthatha amakhulu. Ngokuvumelwe, isihlo ngu red emva kokulapha ngokwemvelo. Uma isebenzisa ukulapha okusheshayo, i-oxide layer ephakeme ikhweyelwa kusayizi, okuzokwaziya ngokuba yindlekile.
Ku design yokwakha okuvumelwe, i-Q345 isebenziswa ngoba inikeza amandla angaphezulu kune Q235, okukhula amakhulu ngama-15% - 20% kunoma Q235. Kokuqinisekisa ukulawulwa kweqile, i-Q235 iyinkimbinkimbi. Ubunzima obukhona kwezinye 3% - 8%.
Ngokuhlanganisa nokubonakala, kunezinye izihlalelo:
A.
- Kwifaktori, izindlela zokugcina amatheli zisetshenziswa ukwahlukanisa kahle kwezindawo ezibibili. Isibonelo, ukuba ingcwele encane ye-steel igcinwe kudolobha eziyi-steel ngokusebenzisa i-rod yokugcina E43, emlandela ukusebenzisa umkhawulo wokuthunywa. Kungakhohlwa amatheli aphakathi kwezindawo ezibibili ngokujulwa kwezinto.
- Ifaktori nazo ingasebenzisa i-grinding wheel ukwahlukanisa kahle kwezindawo ezibibili. Xa kusebenzisa i-grinding wheel ku-steel Q235, amagciwane angaphakathi kwezingxenye ezincane kanye nezimnyama. Kodwa ku-steel Q345, amagciwane anesici esibili kanye nezingxenye ezibonakalayo.
- Ngokuhluka kwezibonelo kwesayithi yokuthunywa kwamatheli aphakathi, kungase kahlukaniswe kahle kwezindawo ezibibili. Ngokuvamile, isayithi yokuthunywa ye-Q345 ithambo elikhulu.
B.
- Ngokubonakala kwamatheli, kungase kahlukaniswe kahle kwezindawo Q235 kanye Q345: ubonakala be-Q235 ubulawu, futhi u-Q345 ubuhlungu (lokhu kuyindlela kuphela yamatheli aphakathi kwezindawo eziyafika kulo, kungase kahlukaniswe ngokuhamba kwesikhathi).
- Lo mafutha wokuphahlisa umkhiqizo owodwa yile chemical analysis. I carbon content ka Q235 ne Q345 iyahlukile, futhi i chemical content iyahlukile. (Lokuyindlela engavunyelwa ngokulungiselelwe).
- Ukuqubuka phakathi kwezimkhiqizo Q235 ne Q345 ngokusebenzisa ukulayela: ukuxhumana nezinye iplatini ezimbili zokwelapha engaziwa futhi ulayele ngokulayelela okuvamile. Uma kukhona umgca ophakeme esinye esihlabeni, kuyakhiwa ukuthi yimkhiqizo we Q345. (Lokuyindlela yokusebenza ngokuxhumene.)
Izindaba Ezishisayo 
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