Njira yochizira kutentha – normalizing

Normalizing, yomwe imadziwikanso kuti normalizing, ndi njira yochizira kutentha kwachitsulo yomwe ntchitoyo imatenthedwa mpaka 30 ~ 50 ° C pamwamba pa Ac3 kapena Accm, ndipo itatha kugwira kwa nthawi, imachotsedwa mu ng’anjo ndikuzimitsidwa ndi madzi. , kupopera kapena kuwomba. Kusiyana pakati pa normalizing ndi annealing ndi kuti kuzizira kwa normalizing ndi mofulumira pang’ono kuposa annealing, kotero normalizing dongosolo ndi bwino kuposa annealing kapangidwe, ndi makina ake amawongoleredwa bwino. Kuphatikiza apo, kuzizira kwakunja kwa ng’anjo yokhazikika sikukhala ndi zida, ndipo zokolola zake ndizambiri. Chifukwa chake, normalizing imagwiritsidwa ntchito momwe mungathere m’malo mwa annealing popanga.

Magawo akuluakulu ogwiritsira ntchito normalizing ndi: ① Pachitsulo chochepa cha carbon, kuuma pambuyo pokhazikika kumakhala kokwera pang’ono kusiyana ndi kutsekemera, ndipo kulimba kwake kumakhala bwinoko, komwe kungagwiritsidwe ntchito ngati mankhwala odulidwa. ②Kwa chitsulo chapakati cha carbon, chitha kugwiritsidwa ntchito ngati chithandizo chomaliza cha kutentha m’malo mozimitsa ndi kutenthetsa, kapena ngati mankhwala okonzekera asanazimitse pamwamba ndi kutentha kochititsa chidwi. ③Kugwiritsidwa ntchito ngati chitsulo, kunyamula chitsulo, chitsulo chopangidwa ndi carburized, etc., kumatha kuchepetsa kapena kuletsa mapangidwe a network carbide, kuti apeze kapangidwe kabwino ka spheroidizing annealing. ④ Pakupanga zitsulo, imatha kukonzanso momwe amapangira ndikuwongolera magwiridwe antchito. ⑤ Pazopanga zazikulu, zitha kugwiritsidwa ntchito ngati njira yomaliza yochizira kutentha kuti mupewe kusweka kwakukulu pakuzimitsa. ⑥Amagwiritsidwa ntchito ngati chitsulo cha ductile kuti athandizire kulimba, kulimba komanso kukana kuvala, monga kupanga zida zofunika monga ma crankshaft ndi ndodo zolumikizira zamagalimoto, mathirakitala ndi injini za dizilo. ⑦ Mmodzi normalizing pamaso spheroidizing annealing wa hypereutectoid zitsulo akhoza kuchotsa reticulated cementite kuonetsetsa kuti simenti onse spheroidized pa spheroidizing annealing.