PDC Bit Cutter Manufacture

I-PDC bits cutter ibizwa ngokuba yiPolycrystalline Diamond Compact Cutter.Le nto yokwenziwa yi-90-95% yedayimani ecocekileyo kwaye yenziwe ibe yi-compacts ebekwe kumzimba we-bit. Ubushushu obuphezulu bokukhuhlana obuveliswe ngezi ntlobo zamasuntswana kubangele ukuba idayimane ye-polycrystalline iqhekeke kwaye oku kubangele uphuhliso lweDayimane ye-Thermally Stable Polycrystalline - i-TSP Diamond.

I-PCD (i-Polycrystalline Diamond) yenziwe kwinqanaba eliphezulu lobushushu obuphindwe kabini, inkqubo yoxinzelelo oluphezulu. Inqanaba lokuqala kwinkqubo kukwenza iikristale zedayimani ezenziweyo ngokuveza igraphite, phambi kweCobalt, i-nickel, kunye nentsimbi okanye i-manganese catalyst / isisombululo, kuxinzelelo olungaphezulu kwe-600,000 psi. Kwezi meko iikristale zedayimani zenza ngokukhawuleza. Nangona kunjalo, ngexesha lenkqubo yokuguqula i-graphite kwidayimane, kukho ukuchithwa kwevolumu, okubangela ukuba i-catalyst / i-solvent ihambe phakathi kwe-crystals eyenza i-crystals, ukukhusela i-intercrystalline bonding kwaye ngoko ke kuphela i-diamond crystal powder iveliswa kule nxalenye yenkqubo.

Kwinqanaba lesibini lenkqubo, i-PCD engenanto okanye 'i-cutter' yenziwa yi-liquid phase sintering operation. Umgubo wedayimane owenziwe kwinqanaba lokuqala lenkqubo uxutywe ngokucokisekileyo kunye ne-catalyst / binder kwaye ubonakaliswe kumaqondo okushisa angaphezu kwe-1400 ℃ kunye noxinzelelo lwe-750,000 psi. Indlela ephambili yokucoca i-sintering kukunyibilikisa iikristale zedayimane kwimida yazo, iikona, kunye namanqaku oxinzelelo oluphezulu olubangelwa ngongoma okanye unxibelelwano lomphetho. Oku kulandelwa kukukhula kwe-epitaxial yeedayimani ebusweni nakwiindawo ze-angle yoqhagamshelwano ephantsi phakathi kweekristale. Le nkqubo yokuhluma kwakhona ibumba iibhondi zokwenyani zedayimani ukuya kwidayimani ngaphandle kwesibophelelo solwelo esisuka kwindawo yebhondi. I-binder yenza inethiwekhi eqhubekayo okanye engaphantsi kweepores, ekhoyo kunye nenethiwekhi eqhubekayo yedayimane. Imilinganiselo yedayimane eqhelekileyo kwi-PCD yi-90-97 vol.%.

Ukuba umntu ufuna i-composite compact apho i-PCD idibaniswe ngamakhemikhali kwi-tungsten carbide substrate, enye okanye yonke i-binder ye-PCD inokufumaneka kwi-tungsten carbide substrate ekufutshane ngokunyibilika nokukhupha i-cobalt binder kwi-tungsten carbide.

Ukuba unomdla abasiki bePDC kwaye ufuna ulwazi oluninzi kunye neenkcukacha, ungaQHAGAMSHELANA NATHI ngefowuni okanye ngeposi ekhohlo, okanye SITHUMELE MAIL emazantsi ephepha.