Zogulitsa Zathu
Mphete Yogaya kwa Chigayo
Ubwino waukadaulo
Kukana kuvala kwa zida za mphero ndizofunika kwambiri. Nthawi zambiri, anthu ambiri amaona kuti mankhwalawo akakhala ovuta kwambiri, amatha kuvala kwambiri, chifukwa chake, opanga ambiri amalengeza kuti ma castings awo ali ndi chromium, kuchuluka kwake kumafika 30%, ndipo kuuma kwa HRC kumafika 63-65. Komabe, kugawa komwe kumabalalitsidwa kwambiri, kumapangitsa kuti pakhale mwayi wopanga ma micro-holes ndi ming'alu yaying'ono pamawonekedwe apakati pa matrix ndi ma carbides, ndipo kuthekera kwa kusweka kudzakhalanso Kwakukulu. Ndipo chinthucho chikakhala cholimba, m’pamenenso chimavuta kuchidula. Chifukwa chake, kupanga mphete yosamva komanso yolimba yopera sikophweka. Kupera mphete makamaka pogwiritsa ntchito mitundu iwiri yotsatirayi ya zipangizo.
65Mn (65 manganese): zinthuzi zitha kusintha kwambiri kulimba kwa mphete yopera. Ili ndi mawonekedwe a kuuma kwakukulu, kukana kwamphamvu kwambiri komanso kukana kwamphamvu kwa maginito, imagwiritsidwa ntchito makamaka m'munda wopangira ufa pomwe mankhwalawo amafunikira kuchotsa chitsulo. Kukana kuvala ndi kulimba kumatha kupitsidwanso kwambiri ndi normalizing ndi kutentha kutentha mankhwala.
Mn13 (13 manganese): kulimba kwa mphete yogaya ndi Mn13 kwawongoleredwa poyerekeza ndi 65Mn. Kuponyedwa kwa mankhwalawa kumathandizidwa ndi kuuma kwa madzi pambuyo pa kutsanulira, zoponyedwa zimakhala ndi mphamvu zowonjezereka, zolimba, pulasitiki ndi zinthu zopanda maginito pambuyo pouma madzi, zomwe zimapangitsa kuti mphete yopera ikhale yolimba. Pamene kukhudzidwa kwambiri ndi mapindikidwe amphamvu kuthamanga pa kuthamanga, pamwamba adzagwira ntchito kuumitsa ndi kupanga martensite, potero kupanga kwambiri kuvala zosagwira pamwamba wosanjikiza, wosanjikiza wamkati amasunga kulimba kwambiri, ngakhale atavala pamwamba woonda kwambiri, wodzigudubuza akupera akhoza kupirira kwambiri mantha katundu.
