Samfuran Carbide Cemented Tungsten Powder Preparation

Ultra-lafiya barbashi tungsten foda ne baki, lafiya barbashitungstenfoda yana da duhu launin toka, kuma m barbashi tungsten foda ne haske launin toka tare da karfe luster.Metal tungsten foda za a iya samar da ta hanyar rage tungsten oxide.Babban hanyoyin ragewa shine rage hydrogen da rage carbon.A halin yanzu, yawanci ana amfani da hanyar rage hydrogen.Dangantakar hydrogen da oxygen a yanayin zafi ya fi girma fiye da kusancin tungsten da oxygen.Saboda haka, tungsten trioxide ya fara raguwa da hydrogen a 380 ~ 400 ° C.Hydrogen na iya rage tungsten dioxide cikintungsten fodasama da 630°C.

.Thetungsten fodasamar da hanyar rage hydrogen yana da babban tsabta kuma yana da sauƙi don sarrafa girman ƙwayar foda.Idan babu hydrogen, ana samun hanyar rage carbon.Amfanin busassun ciyawa shine cewa baƙar fata carbon yana da arha kuma yana da sauƙin samuwa, amma girman ƙwayar foda yana da wuyar sarrafawa.Akwai hanyar rage sau ɗaya don rage tungsten oxide tare da hydrogen don shirya foda tungsten, akwai kuma hanyar rage matakan matakai da yawa wanda ya fara rage WO3 zuwa WO2, sannan ya rage oxalic acid da farko don samar da w foda.A cikin tsarin samarwa na yanzu, tungsten foda yawanci ana samar da shi ta hanyar rage kai tsaye mataki-mataki.

Bugu da kari, akwai kuma hanyar kai tsaye rage ammonium paratungstate cikin tungsten foda.Wasu maƙasudi na musamman tungsten kuma ana shirya su ta hanyar rage halide.
Hakanan akwai hanyar aluminothermic don rage foda tama da shirya shi.Tun 2000, tsarin shirya ultrafine tungsten foda ta hanyar rage hydrogen na violet tungsten an inganta shi sosai.