Isifinyezo
INSIMBI: i-metallurgy.
IZINTO: ukusungulwa kuhlobene nensimu yensimbi eyimpuphu. Ikakhulukazi kuhlobene nokwamukelwa kwe-alloy eqinile ehlanganisiwe ngokusekelwe ku-tungsten carbide. Ingasetshenziswa ekukhiqizeni izicucu, ama-drill kanye ne-milling cutter. I-alloy eqinile iqukethe i-tungsten carbide engu-80.0-82.0 wt % kanye ne-18.0-20.0 wt % yokubopha. Ukubopha kuqukethe, wt %: i-molybdenum 48.0-50.0; i-niobium 1.0-2.0; i-rhenium 10.0-12.0; i-cobalt 36.0-41.0.
UMTHELELA: ukwamukelwa kwe-alloy enamandla aphezulu.
Incazelo
Lokhu kusungulwa kuhlobene nensimu ye-powder metallurgy kanye nokukhiqizwa kwama-alloy aqinile aqoshiwe asekelwe ku-tungsten carbide, angasetshenziswa ekwenzeni izicucu, ama-drill, ama-mill kanye namanye amathuluzi.
I-carbide ehlanganisiwe eyaziwayo esekelwe ku-tungsten carbide, equkethe i-3.0 kuya ku-20.0 wt.% I-alloy ye-binder equkethe, i-wt.%: i-Cobalt 20.0-75.0; i-molybdenum – kufika ku-5.0; i-niobium – kufika ku-3.0 [1].
Inhloso yalo mshini ukwandisa amandla e-alloy.
Umphumela wobuchwepheshe utholakala ngokuthi ku-alloy eqinile ehlanganisiwe esekelwe ku-tungsten carbide equkethe i-80.0-82.0 wt.% Tungsten carbide kanye ne-18.0-20.0 wt.% Binder, i-binder iqukethe, wt.%: Molybdenum 48 0-50.0; niobium 1.0-2.0, rhenium 10.0-12.0; cobalt 36.0-41.0.
Etafuleni. 1 ikhombisa ukwakheka kwe-alloy, kanye namandla amakhulu ekugobeni. Etafuleni. 2 ikhombisa ukwakheka kwe-ligament.
Ithebula 1 Izingxenye Ukwakheka, ubungako%: eyodwa 2 3 i-Wolfram carbide 80.0 81.0 82.0 Iqembu 20.0 19.0 18.0 Amandla Okugoba, i-MPa ~ 1950 ~ 1950 ~ 1950
Ithebula 2. Ukwakheka Kwezingxenye, isisindo%: eyodwa 2 3 Molybdenum 48.0 49.0 50,0 Niobium 1,0 1,5 2.0 Rhenium 10.0 11.0 12.0 Cobalt 41.0 38.5 36.0
Ama-powder ezingxenye ze-alloy axutshwe ngezilinganiso ezibonisiwe, ingxube icindezelwa ngaphansi kwengcindezi engu-4.5-4.8 t / cm2 bese ishiswa esithandweni sikagesi ekushiseni okungu-1300-1330 ° C ku-vacuum amahora angu-7-9. Ngesikhathi sokushiswa, i-binder incibilikisa ingxenye ye-tungsten carbide bese iyancibilika. Umphumela uba yizinto ezijiyile ezakhiwe ngezinhlayiya ze-tungsten carbide ezixhunywe yi-binder.
Imithombo yolwazi
1. GB 1085041, C22C 29/06, 1967.
https://patents.google.com/patent/RU2351676C1/en?q=tungsten+carbide&oq=tungsten+carbide+
Isikhathi sokuthunyelwe: Juni-17-2022
