I-Sintered hard alloy ngesisekelo se-tungsten carbide

Abstract

INKUNDLA: metallurgy.

I-SUBSTANCE: okusunguliwe kuhlobene nenkundla ye-powder metallurgy.Ikakhulukazi ihlobene nokwamukela i-sintered hard alloy ngesisekelo se-tungsten carbide.Ingasetshenziselwa ukukhiqiza ama-cutters, ama-drill kanye ne-milling cutter.I-Hard alloy iqukethe u-80.0-82.0 wt % we-tungsten carbide kanye no-18.0-20.0 wt % wokubopha.Ukubopha kuqukethe, wt %: molybdenum 48.0-50.0;i-niobium 1.0-2.0;i-rhenium 10.0-12.0;i-cobalt 36.0-41.0.

UMPHUMELA: ukwamukela ingxubevange yamandla aphezulu.

Incazelo

Ukusungulwa kuhlobene nomkhakha we-powder metallurgy kanye nokukhiqizwa kwama-alloys aqinile asekelwe ku-tungsten carbide, engasetshenziselwa ukwakhiwa kwama-cutters, ama-drill, izigayo namanye amathuluzi.

I-sintered carbide eyaziwayo esekelwe ku-tungsten carbide, equkethe u-3.0 kuya ku-20.0 wt.% I-binder alloy equkethe, wt.%: Cobalt 20.0-75.0;i-molybdenum - kufika ku-5.0;i-niobium - kufika ku-3.0 [1].

Inhloso yokusungulwa ukukhulisa amandla engxubevange.

Umphumela wobuchwepheshe utholakala ngokuthi ku-sintered hard alloy esekelwe ku-tungsten carbide equkethe i-80.0-82.0 wt.% I-Tungsten carbide kanye ne-18.0-20.0 wt.% Binder, i-binder iqukethe, 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.

Etafuleni.1 ikhombisa ukwakheka kwengxubevange, kanye namandla okugcina ekugobeni.Etafuleni.2 ikhombisa ukwakheka komsipha.

Ithebula 1 Ukwakhiwa Kwezingxenye, wt.%: eyodwa 2 3 Wolfram carbide 80.0 81.0 82.0 Inqwaba 20,0 19.0 18.0 Amandla Okugoba, MPa ~ 1950 ~ 1950 ~ 1950

Ithebula 2. Ukwakhiwa Kwezingxenye, wt.%: 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-powders wezingxenye ze-alloy axutshwe ngezilinganiso ezibonisiwe, ingxube icindezelwa ngaphansi kwengcindezi ye-4.5-4.8 t / cm 2 futhi ifakwe esithandweni sikagesi ekushiseni kwe-1300-1330 ° C ku-vacuum amahora angu-7-9.Ngesikhathi sokushisa, i-binder incibilikisa ingxenye ye-tungsten carbide futhi iyancibilika.Umphumela uba impahla eminyene isakhiwo sayo siqukethe izinhlayiya 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+