Waya Wolimba wa Flux-Cored — Zinthu Zofunika Kwambiri Zogwirira Ntchito

Waya wolimba wozunguliraimagwiritsidwa ntchito kwambiri pokonza ndi kupanga zida zosawonongeka m'mafakitale a migodi, kuphwanya, kupukuta zitsulo ndi simenti, monga ma crusher hammers, liners, chutes, hot rolling rolls ndi rotary kiln support rollers. Kagwiridwe kake ka ntchito kamatsimikizira nthawi yogwirira ntchito ya zida zogwirira ntchito, kotero makasitomala amaganizira kwambiri zizindikiro zazikulu zaukadaulo zotsatirazi.

Choyamba, kuuma pambuyo pa kuwotcherera pamwamba, komwe kumalembedwa ndi HRC, ndiye chizindikiro chofunikira kwambiri. Magiredi okhazikika a kuuma amaphatikizapo HRC 55–58 ndi HRC 60–65. Magiredi osiyanasiyana amapangidwa kuti agwirizane ndi mikhalidwe yosiyanasiyana yogwirira ntchito: kukana kukanda kutentha kwa chipinda, kukana kutentha kwambiri kwa ma roll ogubuduza otentha, kukana kukhudza kwambiri komanso kukana kukanda koyera. Tiyenera kudziwa kuti ma formula a waya amasinthidwa padera. Magiredi a nyundo zogubuduza zamagetsi, magiredi a kuvala koyera kwa ma chutes ndi ma liners, ndi magiredi a kutentha kwambiri a ma roll ogubuduza otentha sangagwiritsidwe ntchito mosinthana.

Kachiwiri, kapangidwe ka metallographic ndi kapangidwe ka mankhwala zimayendetsedwa mosamala. Zomwe zili mu Cr, C, Nb, Mo ndi V zimasinthidwa bwino malinga ndi zofunikira pa kapangidwe. Mitundu yomwe ilipo ndi tungsten carbide composite, high chromium cast iron, martensitic ndi austenitic stainless steel grades. Kwa makasitomala aku migodi ndi zitsulo zakunja, satifiketi yoyesera zinthu (MTC) ingaperekedwe ngati itapemphedwa kuti itsimikizire kapangidwe ka mankhwala.

Kukhudzidwa ndi ming'alu ndi vuto lina lalikulu, makamaka pa zinthu zazikulu monga ma rolling rolls olemera ndi ma castings okhuthala. Ogula adzayang'ana ngati gawo la pamwamba limakonda kusweka, ngati kuwotcherera pamwamba pa multilayer ndi kotheka, komanso ngati kutentha kofunikira kutenthedwa ndi kusungidwa pambuyo pa kuwotcherera. Kukana ming'alu kosayenera kudzatsogolera ku kuchotsedwa msanga kwa gawo lolimba ndi kulephera.

Makasitomala amasamalanso kwambiri za nthawi yogwirira ntchito. Nthawi zambiri amayerekezera nthawi yogwirira ntchito ndi zinthu zochokera kwa ogulitsa ena. Zambiri zomwe zimagwiritsidwa ntchito m'munda ndi zikwama zenizeni zogwirira ntchito pa ma crushers, ma rolling rolls ndi ma roller othandizira uvuni wa rotary ndi zizindikiro zofunika kwambiri kuti ziwunikidwe.

Kuphatikiza apo, kugwiritsa ntchito bwino ma welding sikunganyalanyazidwe. Mfundo zazikulu zikuphatikizapo kuchuluka kwa madontho, kuchotsa slag ndi kupanga weld bead. Mafakitale ambiri achitsulo ndi migodi amagwiritsa ntchito zida zodzipangira zokha, monga makina otseguka a arc ndi submited-arc surfacing. Kugwirizana bwino ndi makina odzipangira okha kumatsimikizira kudyetsa kokhazikika, kusinthasintha kwa ma welding komanso kupanga bwino kwambiri.