Sintered hard alloy pamaziko a tungsten carbide

Ndemanga

MALO: zitsulo.

ZOCHITIKA: Zopangidwa zimagwirizana ndi gawo la zitsulo za ufa. Makamaka zikukhudzana ndi kulandila kwa sintered hard alloy pamaziko a tungsten carbide. Itha kugwiritsidwa ntchito popanga ocheka, obowola ndi odula mphero. Aloyi yolimba imakhala ndi 80.0-82.0 wt% tungsten carbide ndi 18.0-20.0 wt % yomangiriza. Kumanga kuli, wt%: molybdenum 48.0-50.0; niobium 1.0-2.0; rhenium 10.0-12.0; cobalt 36.0-41.0.

ZOTHANDIZA: kulandira alloy yamphamvu kwambiri.

Kufotokozera

Zomwe zimapangidwazo zimagwirizana ndi gawo la zitsulo za ufa komanso kupanga ma alloys olimba a sintered potengera tungsten carbide, yomwe ingagwiritsidwe ntchito popanga odulira, kubowola, mphero ndi zida zina.

Odziwika sintered carbide zochokera tungsten carbide, munali 3.0 kuti 20.0 wt.% Binder aloyi munali, wt.%: Cobalt 20.0-75.0; molybdenum - mpaka 5.0; niobium - mpaka 3.0 [1].

Cholinga cha kupanga ndikuwonjezera mphamvu ya alloy.

Zotsatira zaumisiri zimatheka chifukwa mu sintered hard alloy zochokera ku tungsten carbide yomwe ili ndi 80.0-82.0 wt.% Tungsten carbide ndi 18.0-20.0 wt.% Binder, binder ili, wt.%: Molybdenum 48 0-50.0; niobium 1.0-2.0, rhenium 10.0-12.0; cobalt 36.0-41.0.

Mu tebulo. 1 ikuwonetsa kapangidwe ka aloyi, komanso mphamvu yayikulu pakupindika. Mu tebulo. 2 ikuwonetsa kapangidwe ka ligament.

Table 1 Mapangidwe a Zigawo, wt.%: imodzi 2 3 Wolfram carbide 80.0 81.0 82.0 Gulu 20,0 19.0 18.0 Kupindika Mphamvu, MPa ~ 1950 ~ 1950 ~ 1950

Table 2. Mapangidwe a Zigawo, wt.%: imodzi 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

Mafuta a zigawo za aloyi amasakanizidwa mofanana, kusakaniza kumakanikizidwa ndi 4.5-4.8 t / cm 2 ndikuyika mu ng'anjo yamagetsi pa kutentha kwa 1300-1330 ° C mu vacuum kwa maola 7-9. Pa sintering, binder amasungunula mbali ya tungsten carbide ndi kusungunuka. Chotsatira chake ndi chinthu chowundana chomwe mawonekedwe ake amakhala ndi tinthu tating'ono ta tungsten carbide olumikizidwa ndi binder.

Magwero a chidziwitso

1. GB 1085041, C22C 29/06, 1967.

https://patents.google.com/patent/RU2351676C1/en?q=tungsten+carbide&oq=tungsten+carbide+