I-PDC, okanye i-polycrystalline diamond compact, izicukuthwane ziye zaba yinto etshintsha umdlalo kwishishini lokugrumba. Ezi zixhobo zokusika zitshintshe iteknoloji yokugrumba ngokwandisa ukusebenza kakuhle nokunciphisa iindleko. Kodwa zivela phi ezi zicukuthwane ze-PDC, kwaye zathandwa njani kangaka?
Imbali yabasiki bePDC iqala kwiminyaka yoo-1950 xa kwaqalwa ukuveliswa iidayimani zokwenziwa. Ezi dayimani zaveliswa ngokufaka igrafiti kuxinzelelo oluphezulu kunye namaqondo obushushu, nto leyo eyadala into eyayinzima kunedayimani yendalo. Iidayimani zokwenziwa zakhawuleza zathandwa kwizicelo zoshishino, kuquka ukubhola.
Nangona kunjalo, ukusebenzisa iidayimani ezenziweyo xa kugrunjwa kwakunzima. Iidayimani zazidla ngokuqhekeka okanye ziphume kwisixhobo, nto leyo eyayinciphisa ukusebenza kwaso kwaye kwakufuneka zitshintshwe rhoqo. Ukulungisa le ngxaki, abaphandi baqala ukuzama ukudibanisa iidayimani ezenziweyo nezinye izinto, ezifana ne-tungsten carbide, ukuze benze isixhobo sokusika esihlala ixesha elide nesisebenzayo.
Kwiminyaka yoo-1970, kwaveliswa izixhobo zokuqala zokusika zePDC, ezaziquka umaleko wedayimani odityaniswe ne-tungsten carbide substrate. Ezi zixhobo zokusika zazisetyenziswa ekuqaleni kwishishini lezemigodi, kodwa iingenelo zazo zabonakala ngokukhawuleza kwizicelo zokugrumba ioyile negesi. Izixhobo zokusika zePDC zazibonelela ngokugrumba ngokukhawuleza nangokusebenzayo, zinciphisa iindleko kwaye zinyusa imveliso.
Njengoko iteknoloji iphucuka, izixhobo zokusika zePDC ziye zaphucuka ngakumbi, kunye noyilo olutsha kunye nezixhobo ezandisa ukuqina kwazo kunye nokuguquguquka kwazo. Namhlanje, izixhobo zokusika zePDC zisetyenziswa kwiindlela ezahlukeneyo zokugrumba, kubandakanya ukugrumba nge-geothermal, ukumbiwa kwemigodi, ukwakhiwa, nokunye.
Ukusetyenziswa kwezixhobo zokusika zePDC kukhokelele ekuphuculeni iindlela zokubhola, ezifana nokubhola ngokuthe tye kunye nokubhola ngendlela ethe tye. Ezi ndlela zenziwe zaba nokwenzeka ngenxa yokusebenza kakuhle kunye nokuqina kwezixhobo zokusika zePDC, nto leyo evumela ukubhola okuchanekileyo nokulawulwayo.
Ukuqukumbela, abasiki bePDC banembali etyebileyo esusela ekuphuhlisweni kweedayimani ezenziweyo ngeminyaka yoo-1950. Uphuhliso lwabo luye lwakhokelela ekuphuhlisweni okukhulu kweteknoloji yokugrumba, ukuphucula ukusebenza kakuhle, ukunciphisa iindleko, kunye nokwandisa uluhlu lwezicelo. Njengoko imfuno yokugrumba ngokukhawuleza nangokusebenzayo iqhubeka ikhula, kuyacaca ukuba abasiki bePDC baya kuhlala beyinxalenye ebalulekileyo yoshishino lokugrumba.
Ixesha lokuthumela: Matshi-04-2023
