Abstract
FIELD: metallurgy.
TSEEM CEEB: invention muaj feem xyuam rau hmoov metallurgy teb. Tshwj xeeb tshaj yog nws muaj feem xyuam rau kev tau txais sintered nyuaj alloy los ntawm tungsten carbide. Nws tuaj yeem siv rau kev tsim cov cutters, laum thiab milling cutter. Hard alloy muaj 80.0-82.0 wt% tungsten carbide thiab 18.0-20.0 wt% ntawm kev khi. Kev khi muaj, wt %: molybdenum 48.0-50.0; niobium 1.0-2.0; rhenium 10.0-12.0; cobalt 36.0-41.0.
TSEEM CEEB: tau txais lub zog muaj zog alloy.
Kev piav qhia
Lub invention muaj feem xyuam rau lub teb ntawm hmoov metallurgy thiab rau zus tau tej cov sintered nyuaj alloys raws li tungsten carbide, uas yuav siv tau rau kev tsim cov cutters, xyaum, mills thiab lwm yam cuab yeej.
Paub sintered carbide raws li tungsten carbide, muaj 3.0 mus rau 20.0 wt.% A binder alloy muaj, wt.%: Cobalt 20.0-75.0; molybdenum - mus txog 5.0; niobium - mus txog 3.0 [1].
Lub hom phiaj ntawm qhov invention yog ua kom lub zog ntawm cov alloy.
Cov txiaj ntsig tau ua tiav hauv qhov ntawd hauv sintered nyuaj alloy raws li tungsten carbide uas muaj 80.0-82.0 wt.% Tungsten carbide thiab 18.0-20.0 wt.% Binder, lub binder muaj, wt.%: Molybdenum 48 0-50.0; niobium 1.0-2.0, rhenium 10.0-12.0; cobalt 36.0-41.0.
Hauv lub rooj. 1 qhia tau hais tias muaj pes tsawg leeg ntawm cov alloy, nrog rau qhov kawg ntawm lub zog hauv kev khoov. Hauv lub rooj. 2 qhia qhov muaj pes tsawg leeg ntawm ligament.
Table 1 Cheebtsam Composition, wt.%: ib 2 3 Wolfram carbide 80.0 81.0 82.0 Bunch 20,0 19.0 18.0 Bending Strength, MPa ~ 1950 ~ 1950 ~ 1950
Table 2. Cheebtsam Composition, wt.%: ib 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
Cov hmoov ntawm cov khoom sib xyaw ua ke yog sib xyaw rau hauv cov lus qhia, qhov sib tov yog nias hauv qab ntawm 4.5-4.8 t / cm 2 thiab sintered nyob rau hauv lub cub hluav taws xob ntawm qhov kub ntawm 1300-1330 ° C hauv lub tshuab nqus tsev rau 7-9 teev. Thaum lub sij hawm sintering, lub binder dissolves ib feem ntawm tungsten carbide thiab melts. Qhov tshwm sim yog cov khoom siv ntom ntom uas nws cov qauv muaj cov tungsten carbide cov khoom txuas nrog lub binder.
Cov ntaub ntawv
1. GB 1085041, C22C 29/06, 1967.
https://patents.google.com/patent/RU2351676C1/en?q=tungsten+carbide&oq=tungsten+carbide+
Post lub sij hawm: Jun-17-2022
