Izigaba ezine ezisisiseko zeTungsten Carbide Sintering Process

I-Tungsten carbide, ekwabizwa ngokuba yi-cemented carbide, ineempawu zokuqina okuphezulu, ukomelela okuphezulu, ukumelana nokunxiba kakuhle kunye nokuqina, ukumelana nobushushu obugqwesileyo, kunye nokumelana nokugqwala. Kwaye isoloko isetyenziselwa ukwenza izixhobo zokomba, izixhobo zokumbiwa kwemigodi, izixhobo zokusika, iindawo ezingagungqiyo, iintsimbi ziyafa, iibheringi ezichanekileyo, imilomo, njl.

I-Sintering yinkqubo ephambili yokwenza iimveliso ze-tungsten carbide. Kukho izigaba ezine ezisisiseko zenkqubo ye-tungsten carbide sintering.

1. Inqanaba langaphambi kwe-sintering (Ukususwa kwe-arhente yokubumba kunye ne-pre-sintering stage)

Ukususwa kwe-ejenti yokubumba: Ngokunyuka kobushushu bokuqala be-sintering, i-agent eyenza i-agent iyancipha ngokuthe ngcembe okanye i-vaporize, ngaloo ndlela ikhupha kwisiseko esifakwe emanzini. Ngelo xesha, i-arhente yokwenza iya kwandisa ikhabhoni kwisiseko se-sintered ngaphezulu okanye ngaphantsi, kwaye inani lokunyuka kwekhabhoni liya kuhluka ngohlobo kunye nobuninzi be-arhente yokwenza kunye nenkqubo ye-sintering.

I-oxides ebusweni bepowder iyancitshiswa: kwiqondo lokushisa lokutshisa, i-hydrogen inokunciphisa i-oxides ye-cobalt kunye ne-tungsten. Ukuba i-ejenti yokwenza isusiwe kwi-vacuum kwaye i-sintered, i-carbon-oxygen reaction ayiyi kuba namandla kakhulu. Njengoko ukunyanzeliswa koqhagamshelwano phakathi kweengqungquthela ze-powder kupheliswa ngokuthe ngcembe, i-powder yensimbi edibeneyo iya kuqalisa ukubuyisela kwaye iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde iphinde ibonakale i-surface surface, kwaye amandla adibeneyo aya kwanda ngokufanelekileyo.

Kweli nqanaba, ubushushu bungaphantsi kwama-800℃

2. Inqanaba le-Solid-phase sintering (800℃——ubushushu be-eutectic)

I-800 ~ 1350C ° i-tungsten ye-tungsten yomgubo womgubo wesayizi yengqolowa ikhula ibe nkulu kwaye idityaniswe nomgubo we-cobalt ukuze ube yi-eutectic.

Kwiqondo lokushisa ngaphambi kokubonakala kwesigaba solwelo, ukuphendulwa kwesigaba esiqinileyo kunye nokusabalalisa kuqiniswa, ukuhamba kweplastiki kuphuculwe, kwaye umzimba odibeneyo uyancipha kakhulu.

3. Ulwelo isigaba sintering isigaba (ubushushu eutectic - sintering ubushushu)

Kwi-1400 ~ 1480C ° i-binder powder iya kunyibilika ibe ngulwelo. Xa isigaba se-liquid sibonakala kwisiseko se-sintered, i-shrinkage igqitywe ngokukhawuleza, ilandelwa ukuguqulwa kwe-crystallographic ukwenza isakhiwo esisisiseko kunye nesakhiwo se-alloy.

4. Inqanaba lokupholisa ( Ubushushu beSintering - ubushushu begumbi)

Kule nqanaba, isakhiwo kunye nesigaba sokubunjwa kwe-tungsten carbide sitshintshile ngeemeko zokupholisa ezahlukeneyo. Eli nqaku lingasetyenziselwa ukutshisa i-tungsten carbide ukuphucula iimpawu zayo zomzimba kunye noomatshini.

Ukuba unomdla kwiimveliso ze-tungsten carbide kwaye ufuna ulwazi oluthe kratya kunye neenkcukacha, ungaQHAGAMSHELANA NATHI ngefowuni okanye ngeposi ekhohlo, okanye SITHUMELE MAIL emazantsi ephepha.