PDC leaching

Bimvelaphi

I-polycrystalline diamond compacts (PDC) isetyenzisiwe kwizicelo zemizi-mveliso, kubandakanywa izicelo zokugaya amatye kunye nokusetyenziswa kwesinyithi. Ii-compact ezinjalo zibonise inzuzo ngaphezu kwezinye iintlobo zezinto zokusika, ezifana nokumelana nokunxiba okungcono kunye nokuchasana kwempembelelo. I-PDC inokubunjwa ngokufaka amaqhekeza edayimani ngamnye kunye phantsi koxinzelelo oluphezulu kunye neemeko zobushushu obuphezulu (HPHT), phambi kwe-catalyst / solvent ekhuthaza ukudibanisa kwedayimani-diamond. Eminye imizekelo yecatalyst/solvents for sintered diamond compacts yicobalt, nickel, iron, kunye nezinye iintsimbi zeQela VIII. IiPDCs zidla ngokuba nomxholo wedayimani omkhulu kuneepesenti ezingamashumi asixhenxe ngokomthamo, malunga namashumi asibhozo eepesenti ukuya malunga namashumi alithoba anesibhozo eepesenti. I-PDC ibotshelelwe kwi-substrate, ngokwenza njalo yenze i-PDC cutter, eqhele ukufakwa ngaphakathi, okanye inyuselwe, isixhobo somngxuma osezantsi esifana ne-drill bit or reamer.

PDC leaching

Abasiki bePDC benziwa nge-tungsten carbide substrate kunye nomgubo wedayimane phantsi kobushushu obuphezulu kunye noxinzelelo oluphezulu. UCobalt ngumdibanisi. Inkqubo yokukhupha ikhemikhali isusa i-cobalt catalyst equka isakhiwo se-polycrystalline. Isiphumo yitafile yedayimane enokumelana okuphuculweyo ekuthotyweni kobushushu kunye nokunxitywa kwe-abrasive, okukhokelela kubomi obude obuluncedo bokusika.. Le nkqubo idla ngokugqitywa kwiiyure ezingaphezu kwe-10 phantsi kwe-500 ukuya kwi-600 degree nge-vacuum furnace. Injongo ye-leached kukwandisa ukuqina kwePDC. Ngokuqhelekileyo intsimi yeoli iPDC ithatha le teknoloji, kuba indawo yokusebenza yeoli inzima kakhulu.

NgokufutshaneImbali

Ngama-1980, zombini i-GE Inkampani (i-USA) kunye neNkampani ye-Sumitomo (eJapan) yafunda ukukhutshwa kwe-cobalt kwindawo yokusebenza yamazinyo e-PDC ukuphucula ukusebenza kwamazinyo. Kodwa abazange baphumelele kwezorhwebo. Itekhnoloji yaphinda yaphuhliswa kamva kwaye yanikwa ilungelo elilodwa lomenzi we-Hycalog（i-USA）. Kwangqinwa ukuba ukuba izinto zetsimbi zinokususwa kwi-gap yengqolowa, ukuzinza kwe-thermal yamazinyo e-PDC kuya kuphuculwa kakhulu ukwenzela ukuba i-bit ikwazi ukubhobhoza ngcono kwiifom ezinzima kunye nezibi. Le teknoloji yokususa i-cobalt iphucula ukuxhathisa ukunxiba kwamazinyo e-PDC ekubunjweni kwamatye anzima kakhulu kwaye yandisa ngakumbi uluhlu lwezicelo zeebhithi zePDC.