Inkqubo yokuvelisa kunye nenkqubo yokubumba intonga ye-samente ye-carbide

Iintonga ye-carbide enesamenteyintonga engqukuva ye-carbide, eyaziwa ngokuba yintonga yentsimbi ye-tungsten, ngokufutshane, intonga engqukuva yentsimbi ye-tungsten okanye intonga ye-samente ye-carbide. I-carbide ene-cemented yi-composite material eyenziwe nge-refractory metal compounds (isigaba esinzima) kunye nentsimbi edibeneyo (isigaba sokudibanisa) esiveliswa ngumgubo wesinyithi. I-Tungsten carbide ikwabizwa ngokuba yi-tungsten steel, xa sithetha, ligama lendawo eyahlukileyo.

Kukho iindlela ezimbini zokwenza ukuveliswa kweentsimbi ezijikelezayo ze-carbide: enye i-extrusion molding, kunye ne-extrusion molding yindlela efanelekileyo yokuvelisa iintonga ezide. Inokunqunyulwa kuyo nayiphi na ubude obufunwa ngumsebenzisi ngexesha lenkqubo ye-extrusion. Nangona kunjalo, ubude bubonke abunakudlula i-350mm. Enye i-die molding, yindlela efanelekileyo yokuvelisa imathiriyeli yebha emfutshane. Njengoko igama libonisa, i-carbide powder icinezelwe ibe yimo ngokubumba. Iikhompawundi eziqinileyo kunye neentsimbi ezibotshiweyo ezenziwe ngeentsimbi eziphikisayo azitshintshi ngokusisiseko kumaqondo obushushu angama-500 ° C ngenkqubo yesinyithi yomgubo, kwaye zisenobunzima obuphezulu kwi-1000 ° C. I-tungsten carbide isetyenziswa kakhulu kwi-corrosion kunye nothotho lweempawu ezibalaseleyo, ngakumbi ubunzima bayo obuphezulu kunye nokumelana nokunxiba, nakwizixhobo zesixhobo, ezifana nezixhobo zokujika, izixhobo zokusila, izixhobo zokusika, iidrill, iimela, njl. Ingasetyenziselwa ukusika ilitye lokusila, ikhabhinethi yokomisa, umxube we-Z, umatshini we-pelletizing) -- ucinezela (ngoxinzelelo olusecaleni lwe-hydraulic press okanye i-extrusion press) --ukutshisa isinyithi esixhathisa ukushisa, insimbi engenasici, intsimbi ephezulu ye-manganese, insimbi yesixhobo kunye nezinye izinto ezinzima zokusila okumanzi (isithando somlilo, isithando somlilo esidibeneyo okanye i-HIP yoxinzelelo oluphantsi lomlilo).

Izinto ezikrwada ngumhlaba omanzi, zomisiwe, zixutywe neglu emva kokudibana, emva koko zomiswe kwiholo yokungunda okanye zikhuphelwe isiqabu soxinzelelo, kwaye ekugqibeleni zenziwe ngokususa igrisi kunye ne-sintering ukwenza i-alloy yokugqibela gross gross diaround bar material. Ukucofa iziphelo zombini kuya kuchitha imathiriyeli ethile. Ubude be-tungsten carbide encinci ye-diameter encinci yentonga yentonga, into engalunganga yokuveliswa kwemveliso yentonga engqukuva kukuba umjikelo wemveliso mde. Khulisa i-3mm ngaphantsi kwe-cylindrical yokusila ukuphucula ukulandelelana komonakalo woboya. Ngokuqinisekileyo, iingxaki zokuthe tye kunye nokujikeleza zinokuphuculwa kunye nokugaya i-cylindrical kwinqanaba elilandelayo.

Enye i-mold forming, eyona ndlela yokuvelisa intonga emfutshane, njengoko igama libonisa, i-mold iya kucinezela i-cemented carbide powder ukwenza. Iingenelo zale ndlela yokubumba ibha ye-carbide ene-cemented: enye inokubunjwa ngexesha, eyona ndlela yokuvelisa ibha emfutshane. Njengoko igama libonisa, iyabumba, inciphisa inkunkuma. Yenza lula inkqubo yokusika umgca kwaye ugcine umjikelo wezinto ezomileyo zendlela ye-extrusion. Eli xesha lifutshane lingasentla linokugcina iintsuku ezi-7-10 kubathengi.

Ukuthetha ngokuthe ngqo, uxinzelelo lwe-isostatic lukwayindlela yokufa. Ukucinezela kwe-Isostatic yeyona ndlela ifanelekileyo yokwenza ukuveliswa kweentonga ezinkulu kunye nezinde ze-carbide ezingqukuva. Ngokusebenzisa isitywina sepiston ephezulu kunye nesezantsi, impompo yoxinzelelo iya kujova i-liquid medium phakathi kwe-cylinder yoxinzelelo oluphezulu kunye nerubha yoxinzelelo, ngerubha yoxinzelelo iya kuhambisa amandla eholo ukwenza i-cemented carbide powder pressure molding.