Pu'upu'u
FA'AVAE: metallurgy.
SUBSTANCE: mea fou e feso'ota'i ile fanua fa'ameamea o le pauta. Aemaise lava e faatatau i le mauaina o u'amea malo sintered i luga o le faavae o le tungsten carbide. E mafai ona faʻaaogaina mo le gaosiga o tipi, faʻataʻitaʻiga ma vili tipi. u'amea malo e aofia ai le 80.0-82.0 wt% tungsten carbide ma le 18.0-20.0 wt% o le fusifusia. Fa'amau e aofia ai, wt%: molybdenum 48.0-50.0; niobium 1.0-2.0; rhenium 10.0-12.0; kobalt 36.0-41.0.
AOGA: mauaina o mea faʻapipiʻi malosi-maualuga.
Fa'amatalaga
O le mea fou fou e fesoʻotaʻi ma le fanua o le paʻu paʻu ma mo le gaosiga o uʻamea malo faʻavae e faʻavae i luga o le tungsten carbide, lea e mafai ona faʻaaogaina mo le gaosiga o tipi, vili, vili ma isi meafaigaluega.
carbide sintered lauiloa e faavae i luga o carbide tungsten, o loʻo i ai le 3.0 i le 20.0 wt.% O se mea faʻapipiʻi faʻapipiʻi o loʻo i ai, wt.%: Cobalt 20.0-75.0; molybdenum - e oʻo atu i le 5.0; niobium - e oʻo atu i le 3.0 [1].
O le fa'amoemoega o le mea fou o le fa'ateleina lea o le malosi o le u'amea.
O le taunuʻuga faʻapitoa e ausia i totonu o se mea faʻapipiʻi malo faʻavae e faʻavae i luga o le tungsten carbide o loʻo i ai le 80.0-82.0 wt.% Tungsten carbide ma le 18.0-20.0 wt.% Binder, o loʻo i ai le fusi, wt.%: Molybdenum 48 0-50.0; niobium 1.0-2.0, rhenium 10.0-12.0; kobalt 36.0-41.0.
I le laulau. 1 o loʻo faʻaalia ai le tuʻufaʻatasia o le uʻamea, faʻapea foʻi ma le malosi sili i le punou. I le laulau. 2 o loʻo faʻaalia ai le tuʻufaʻatasiga o le ligament.
Fuafuaga 1 Vaega Fa'avae, wt.%: tasi 2 3 Wolfram carbide 80.0 81.0 82.0 Fui 20,0 19.0 18.0 Malosi Pi'u, MPa ~ 1950 ~ 1950 ~ 1950
Laulau 2. Vaega Fa'aopoopo, wt.%: tasi 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
O paʻu o mea faʻafefiloi o loʻo faʻafefiloi i vaega faʻaalia, o loʻo faʻapipiʻiina le paluga i lalo o le mamafa o le 4.5-4.8 t / cm 2 ma faʻapipiʻi i totonu o se ogaumu eletise i le vevela o le 1300-1330 ° C i le vacuum mo le 7-9 itula. I le taimi o le sintering, e faʻamavaeina e le faʻapipiʻi vaega o le tungsten carbide ma faʻafefe. O le taunuuga o se mea mafiafia o lona fausaga e aofia ai vaega tungsten carbide e fesoʻotaʻi ma se fusi.
Punaoa fa'amatalaga
1. GB 1085041, C22C 29/06, 1967.
https://patents.google.com/patent/RU2351676C1/en?q=tungsten+carbide&oq=tungsten+carbide+
Taimi meli: Iuni-17-2022
