Idayimani eyodwa yekristale eyenziweyo yaphuhliswa ngokuthe ngcembe emva kweminyaka yoo-1950.Idityaniswe kwigraphite njengento ekrwada, yongezwe nge-catalyst, kwaye iphantsi kobushushu obuphezulu kunye noxinzelelo oluphezulu.Artificial polycrystalline diamond (PCD) i polycrystalline imathiriyeli eyenziwa yipolymerization yomgubo wedayimani usebenzisa izibophelelo zentsimbi ezifana Co, Ni, njl Artificial polycrystalline diamond luhlobo olukhethekileyo lwemveliso metallurgy umgubo, nto leyo itsalela kwezinye iindlela kunye neendlela zomgubo eqhelekileyo. i-metallurgy kwindlela yokuvelisa.
Ngexesha lenkqubo sintering, ngenxa yokongezwa izongezo, ibhulorho bonding iqulunqwe ikakhulu Co, Mo, W, WC, kunye Ni yenziwa phakathi iikristale PCD, kunye nedayimani zifakwe ngokuqinileyo kwisakhelo esomeleleyo eyenziwe ibhulorho bonding.Umsebenzi we-metal binder kukubamba ngokuqinileyo idayimani kunye nokusebenzisa ngokupheleleyo ukusika kwayo ngokufanelekileyo.Ukongeza, ngenxa yokuhanjiswa simahla kweenkozo kwiindlela ezahlukeneyo, kunzima ukuba iintanda zisasaze ukusuka kwelinye ingqolowa ukuya kwenye, nto leyo ephucula kakhulu amandla kunye nokuqina kwePCD.
Kolu shicilelo, siza kushwankathela ngokufutshane ezinye zeempawu zeFaka iPCD.
1. Ubunzima obuphezulu be-Ultra kunye nokuxhatshazwa kokugqoka: ngokungafaniyo kwindalo, izinto eziphathekayo zinobunzima obufikelela kwi-10000HV, kwaye ukuxhathisa kwabo ukugqoka kuphantse kuphindwe izihlandlo ezilikhulu zeCarbide insert;
2. Ubunzima, ukuxhatshazwa kokugqoka, i-microstrength, ubunzima bokugaya, kunye ne-friction coefficient phakathi kwe-anisotropic eyodwa ye-crystal diamond crystals kunye nezixhobo zokusebenza ziyahluka kakhulu kwiindiza zekristal ezahlukeneyo kunye nokuqhelaniswa.Ke ngoko, xa uyila kwaye usenza izixhobo zedayimani enye yekristale, kuyafuneka ukuba ukhethe ngokuchanekileyo ulwalathiso lwekristale, kwaye ukuqhelaniswa nekristale kufuneka kuqhutyelwe kwizixhobo zedayimane.Ukukhethwa kwendawo yokusika yangaphambili nasemva kwezixhobo zokusika zePCD ngumba obalulekileyo ekuyileni izixhobo ze-crystal PCD lathe;
3. I-coefficient ye-friction ephantsi: Ukufakwa kwedayimani kune-coefficient ephantsi ye-friction xa kusetyenzwa ezinye izinto zetsimbi ezingenayo i-ferrous xa kuthelekiswa nezinye izinto ezifakelwayo, ezimalunga nesiqingatha se-carbides, ngokuqhelekileyo malunga ne-0.2.
4. I-PCD yokusika i-edge ibukhali kakhulu, kwaye i-radius e-blunt ye-cut cut ingafikelela ngokubanzi kwi-0.1-0.5um.Kwaye izixhobo zedayimani enye yekristale yendalo ingasetyenziswa kuluhlu lwe-0.002-0.005um.Ke ngoko, izixhobo zedayimane zendalo zinokwenza i-ultra-thin cut and ultra-precision machining.
5. I-coefficient yokwandiswa kwe-thermal yedayimane ene-coefficient ephantsi yokwandiswa kwe-thermal incinci kune-carbide ene-cemented, malunga ne-1/10 yentsimbi ye-high-speed.Ke ngoko, izixhobo zokusika idayimani azivelisi ukuguqulwa kwe-thermal ebalulekileyo, oku kuthetha ukuba utshintsho kubungakanani besixhobo esibangelwa kukusika ubushushu buncinci, nto leyo ibaluleke kakhulu ekuchanekeni kunye ne-ultra precision machining kunye neemfuno ezichanekileyo zomgangatho ophezulu.
Ukusetyenziswa kwezixhobo zokusika idayimani
Faka iPCDubukhulu becala isetyenziselwa ukusika/ukubhora/ukusila ngesantya esiphezulu sesinyithi kunye nezixhobo zetsimbi ezingenayo intsimbi, ezilungele ukusetyenzwa kwezixhobo ezahlukeneyo zokunxiba ezingeyontsimbi ezifana nefiber yeglasi kunye neceramic;Iintsimbi ezahlukeneyo ezingenayo i-ferrous: i-aluminium, i-titanium, i-silicon, i-magnesium, njl., kunye neenkqubo ezahlukeneyo zokugqiba isinyithi;
Ukungalungi: ukuzinza kakubi kwe-thermal.Nangona isisixhobo sokusika esinobona bunzima buphezulu, imeko yayo elinganiselweyo ingaphantsi kwama-700 ℃.Xa iqondo lobushushu lokusika lingaphezulu kwe-700 ℃, liya kuphulukana nobulukhuni bayo bokuqala obuphezulu.Yiyo loo nto izixhobo zedayimani zingafanelanga ukwenza iintsimbi zentsimbi.Ngenxa yokuzinza kweekhemikhali ezihluphekileyo zedayimani, i-carbon element kwiidayimani iya kusebenzisana ne-athomu yentsimbi kumaqondo aphezulu, kwaye iya kuguqulwa ibe yisakhiwo segraphite, ikhulise kakhulu umonakalo wezixhobo.
Ixesha lokuposa: May-17-2023