Zogulitsa Zathu
Mphete Yopukutira ya Mphero
Ubwino waukadaulo
Kukana kwa zinthu zopangira mphero n'kofunika kwambiri. Kawirikawiri, anthu ambiri amaganiza kuti chinthucho chikakhala cholimba, chimakhala chovalidwa bwino, motero, mafakitole ambiri amalengeza kuti zinthu zawo zoyeretsera zili ndi chromium, kuchuluka kwake kumafika 30%, ndipo kuuma kwa HRC kumafika 63-65. Komabe, kufalikira kwambiri kwa zinthuzo, kumakhala ndi mwayi waukulu wopanga mabowo ang'onoang'ono ndi ming'alu yaying'ono pakati pa matrix ndi carbides, ndipo mwayi wosweka udzakhala waukulu. Ndipo chinthucho chikakhala cholimba, chimakhala chovuta kudula. Chifukwa chake, kupanga mphete yopukutira yosatha komanso yolimba sikophweka. Kupukutira mphete makamaka pogwiritsa ntchito mitundu iwiri yotsatirayi ya zipangizo.
65Mn (65 manganese): chipangizochi chingathandize kwambiri kulimba kwa mphete yopukusira. Chili ndi kuuma kwambiri, kukana kutopa kwambiri komanso kukana maginito, chimagwiritsidwa ntchito makamaka m'munda wopangira ufa komwe chinthucho chimafunika kuchotsa chitsulo. Kukana kutopa ndi kulimba kwake kumatha kusinthidwa kwambiri mwa kusintha kutentha kukhala bwino komanso kuchepetsa kutentha.
Mn13 (13 manganese): kulimba kwa mphete yopukutira pogwiritsa ntchito Mn13 kwakhala bwino poyerekeza ndi 65Mn. Ma castings a mankhwalawa amachiritsidwa ndi kulimba kwa madzi pambuyo pothira, ma castings ali ndi mphamvu yayikulu yolimba, kuuma, pulasitiki komanso mphamvu zopanda maginito pambuyo pouma madzi, zomwe zimapangitsa mphete yopukutira kukhala yolimba kwambiri. Ikakhudzidwa kwambiri ndi kupsinjika kwakukulu panthawi yogwira ntchito, pamwamba pake padzakhala kuuma ndi kupanga martensite, motero kupanga gawo losawonongeka kwambiri, gawo lamkati limasunga kulimba kwabwino, ngakhale litavalidwa pamwamba pang'ono kwambiri, chopukutira chopukutira chimatha kupirira zovuta zambiri.
