Mawonekedwe a Milling Cutters
Pochita ndi zipangizo zovuta ku makina monga Hastelloy, waspaloy, Inconel ndi Kovar, chidziwitso cha makina ndi chidziwitso ndizofunikira kwambiri. Pakalipano, pali ntchito zambiri zogwiritsira ntchito nickel-based alloys, zomwe zimagwiritsidwa ntchito kwambiri popanga zinthu zina zofunika kwambiri muzamlengalenga, mafakitale azachipatala ndi mankhwala. Zipangizozi zimakhala ndi mphamvu zambiri, zimalimbana ndi dzimbiri, ndipo zimatha kupirira kutentha kwambiri. Zinthu zina zapadera zimawonjezeredwa kuzinthu zomwe zili pamwambazi kuti zipeze ntchito zapamwamba. Komano, zinthu zimenezi zimakhalanso zovuta kwambiri kuzipera.
Tikudziwa kuti faifi tambala ndi chromium ndizowonjezera ziwiri zazikulu mu ma aloyi opangidwa ndi faifi tambala. Kuonjezera faifi tambala kumatha kukulitsa kulimba kwa zinthuzo, kuwonjezera chromium kumatha kukulitsa kuuma kwa zinthuzo, ndipo kukhazikika kwa zigawo zina kungagwiritsidwe ntchito kulosera za kuvala kwa chida. Zinthu zina zomwe zimawonjezeredwa pazinthuzo zingaphatikizepo: silicon, manganese, molybdenum, tantalum, tungsten, ndi zina zotero. Dziwani kuti tantalum ndi tungsten ndizo zigawo zikuluzikulu zomwe zimagwiritsidwa ntchito popanga simenti ya carbide, yomwe imatha kusintha bwino ntchito ya simenti ya carbide , koma kuwonjezera kwa zinthu izi ku workpiece zakuthupi zimapangitsa kuti zikhale zovuta mphero, pafupifupi ngati kudula chida chimodzi cha carbide ndi china.
Chifukwa chiyani odula mphero akudula zida zina amasweka mwachangu akamapera ma aloyi opangidwa ndi nickel? Ndikofunika kumvetsetsa izi. Kupanga ma aloyi opangidwa ndi faifi tambala, mtengo wake ndi wokwera, ndipo mtengo wake ndi 5 mpaka 10 kuposa wa mphero wamba.
Mosakayikira, kutentha ndi chinthu chofunikira kwambiri chomwe chimakhudza moyo wa chida pamene mphero zokhala ndi nickel-based alloys, chifukwa ngakhale zida zabwino kwambiri za carbide zimatha kuwonongedwa ndi kutentha kwambiri. Kutulutsa kutentha kwambiri si vuto la mphero wa nickel alloys. Choncho popera ma aloyi amenewa, kutentha kumafunika kulamuliridwa. Kuphatikiza apo, ndikofunikira kwambiri kudziwa kutentha komwe kumapangidwa popanga makina ndi zida zamitundu yosiyanasiyana (zida zachitsulo zothamanga kwambiri, zida za carbide kapena zida za ceramic).
Kuwonongeka kwa zida zambiri kumakhudzananso ndi zinthu zina, ndipo zosintha zosavomerezeka ndi zonyamula zida zimatha kufupikitsa moyo wa zida. Pamene kulimba kwa workpiece yotsekedwa sikukwanira ndipo kusuntha kumachitika panthawi yodula, kungayambitse kusweka kwa matrix opangidwa ndi simenti ya carbide. Nthawi zina ming'alu yaying'ono imayamba m'mphepete mwake, ndipo nthawi zina kachidutswa kamaphwanya choyikapo cha carbide, zomwe zimapangitsa kuti zikhale zosatheka kupitiliza kudula. Zoonadi, kupukuta uku kungayambitsidwenso ndi carbide yolimba kwambiri kapena kudula kwambiri. Panthawiyi, zida zachitsulo zothamanga kwambiri ziyenera kuganiziridwa kuti zigwiritsidwe ntchito kuti zichepetse kuphulika. Zoonadi, zida zachitsulo zothamanga kwambiri sizingathe kupirira kutentha kwakukulu ngati carbide ya simenti. Ndendende zomwe zidzagwiritsidwe ntchito ziyenera kutsimikiziridwa pazochitika ndi zochitika.