I-CBN vs. PCD: Idabi le-Superhard Cutting Tools-Ukuntywila ngokuNzulu kuVeliso kunye nokuSebenza
I-CBN (iCubic Boron Nitride) Izixhobo zokusika zeCNC
I-CBN, okanye iCubic Boron Nitride, yimathiriyeli eyenziweyo eyaziwa ngokuba lukhuni kakhulu kunye nokuqina kwayo. Iyesibini kuphela kwidayimane ngokubhekiselele kobunzima, okwenza kube yinto efanelekileyo yokusika izixhobo ezisetyenziselwa umatshini ophezulu wokusebenza. Izixhobo zokusika ze-CBN ziqhele ukusetyenziselwa ukwenza iintsimbi eziqinileyo, iintsimbi eziphoswe phantsi, kunye nezinye izinto eziphakamileyo ekunzima ukuzisebenzisa ngezixhobo zokusika eziqhelekileyo.
Inkqubo yokwenziwa kweZixhobo ze-CBN:
Ukuveliswa kwezixhobo zokusika ze-CBN ngokuqhelekileyo kubandakanya ukuhlanganiswa kwe-boron nitride (BN) phantsi koxinzelelo oluphezulu kunye nokushisa okuphezulu. Inkqubo iqala nge-boron powder kunye negesi ye-nitrogen, ephantsi kweemeko ezinzima (ngaphezu kwe-1500 ° C) ukwenza i-cubic boron nitride (c-BN) iikristale. Ezi crystals zidibene kunye nezinto ze-matrix, ngokuphindaphindiweyo i-cobalt binder, ukudala i-insert yokusika okanye isixhobo. Olu luhlu lubonelela ngesixhobo se-CBN ngobulukhuni bayo obumangalisayo kunye nokumelana nokunxiba.
Ukufakwa kwe-CBN kunokuveliswa kwiimilo ezahlukeneyo kunye nobukhulu, kuxhomekeke kwiimfuno ezithile zomatshini. Isixhobo sokugqibela sihlala sintywila, siphantsi, kwaye sigqunywe ukuze siqhubeke siphucula ukusebenza kwaso kunye nokugqiba komphezulu. Ukukwazi kwesixhobo ukugcina imiphetho yokusika ebukhali kumaqondo obushushu aphezulu kwenza kube lukhetho olubalaseleyo kwizicelo ezinzima kumashishini afana ne-aerospace, izithuthi, kunye nokuveliswa kwezixhobo.
I-PCD (i-Polycrystalline Diamond) i-CNC Cutting Tools
I-PCD, okanye i-Polycrystalline Diamond, yinto eyenziwe ngokudibanisa iikristale zedayimani ezilungileyo phantsi koxinzelelo oluphezulu kunye nobushushu, okukhokelela kwisixhobo esinamandla, esisisigxina sokusika. Izixhobo ze-PCD zaziwa ngokuxhathisa kwazo okukhethekileyo, ngakumbi xa kusetyenzwa ngesinyithi esingeyontsimbi efana ne-aluminiyam, ubhedu, nobhedu, kunye nezinto eziyimbumba.
Inkqubo yokwenziwa kweZixhobo zePCD:
Ukuveliswa kwezixhobo ze-PCD kuqala ngokudala i-powders ye-diamond ecocekileyo, exutywe kunye ne-binder yensimbi, ngokuqhelekileyo i-cobalt okanye enye i-powders yensimbi. Lo mxube ke uphantsi kobushushu obuphezulu, inkqubo yoxinzelelo oluphezulu eyaziwa ngokuba yi "sintering" kumatshini okhethekileyo. Ngethuba le nkqubo, iikristali zedayimani zidibanisa kunye, zenza i-dense, isakhiwo se-polycrystalline.
Izixhobo ze-PCD ziveliswa ngeendlela ezimbini eziphambili: i-monolithic kunye ne-brazed. Kwindlela ye-monolithic, isixhobo sonke senziwe kwi-PCD, ngelixa kwindlela edibeneyo, umgca omncinci we-PCD ufakwe kwi-carbide substrate. Emva kwe-sintering, izixhobo ze-PCD ziphantsi kwaye zikhazimliswe ukuya kwimilinganiselo echanekileyo, ukuqinisekisa imiphetho ebukhali yokusika kunye nokugqitywa komphezulu ogudileyo. Ziyakwazi ukunyangwa ngakumbi ngeengubo zokwandisa ukuchasana nokugqoka kunye ne-oxidation, enokuphucula ukusebenza kwabo kwizicelo ezithile.
Izixhobo ze-PCD ziqhele ukusetyenziselwa imisebenzi yokusika echanekileyo kwaye ziluncedo ngakumbi kwizinto zomatshini ezibangela ukunxitywa okubalulekileyo kwizixhobo zemveli. Ngenxa yobulukhuni babo obukhethekileyo kunye neempawu ezisezantsi zokukhuhlana, banikezela ukusebenza okugqwesileyo kuzo zombini ukugqiba kunye nokusebenza komatshini okwisantya esiphezulu.
Ukuthelekisa phakathi kwe-CBN kunye ne-PCD CNC Cutting Tools
| Ipropati | I-CBN (iCubic Boron Nitride) | PCD (Polycrystalline Diamond) |
|---|---|---|
| Ukuqulunqwa kwezinto | Eqinile, eyenziwe nge-boron nitride | Amasuntswana edayimane enziweyo adityaniswe phantsi koxinzelelo oluphezulu |
| Ukuqina | Iphezulu kakhulu, isibini kuphela kwidayimane | Iphezulu kakhulu, eyona nto inzima eyaziwayo |
| Usetyenziso | Iintsimbi eziqinisiweyo, iintsimbi ezityhidiweyo, ii-alloys ezinobushushu obuphezulu | Iintsimbi ezingezizo i-ferrous, i-composites, i-aluminiyam, ubhedu, njl. |
| Nxiba ukuxhathisa | Igqwesileyo, ngakumbi ngezinto ezinzima, ezinqabileyo | Ibalasele, ngakumbi kwiintsimbi ezithambileyo, ezingenayo i-ferrous |
| Ukuzinza kweThermal | Iphezulu kakhulu, ibamba ukushisa okukhulu kakuhle | Iphakathi, ivakalelwa kubushushu obuphezulu |
| Ubomi besixhobo | Ubomi besixhobo eside kumatshini orhabaxa kunye nomsebenzi onzima | Ubomi besixhobo obude kakhulu, ngakumbi ekusebenzeni kokugqiba |
| Ukusika isantya | Ilungele ukusika okunzima kunye nezantya eziphakathi | Izantya eziphakamileyo zokusika ukukhanya kunye nokusika okuphakathi |
| Iindleko | Ngokuqhelekileyo iphantsi kune-PCD | Ephakamileyo ngenxa yenkqubo yokuvelisa kunye nezinto eziphathekayo |
| Amashishini aqhelekileyo | I-aerospace, i-automotive, i-die kunye ne-mold, amashishini ensimbi | Iimoto, i-aerospace, i-electronics, kunye neplastiki |
| Umphezulu Gqiba | Ukuchaneka okuphezulu kunye nokugqiba kakuhle kwendawo kwizinto ezinzima | Ukugqitywa komphezulu ogqwesileyo kwizinto ezingenayo i-ferrous |
Umahluko oPhambili:
Ukuhambelana kwezinto:
I-CBN ifaneleke ngokukodwa kwizinto eziqinileyo kunye nezinqabileyo ezifana neentsimbi eziqinileyo kunye nentsimbi.
I-PCD ilungele izixhobo ezithambileyo ezifana ne-aluminiyam, ubhedu, kunye ne-composites, ezithanda ukunxiba izixhobo zemveli ngokukhawuleza.
Ukusebenza kumaqondo obushushu aphezulu:
Izixhobo ze-CBN zinokumelana namaqondo obushushu aphezulu ngaphandle kokuthotywa, okwenza ukuba zisebenze ngakumbi kumandla aphezulu kunye neemeko zobushushu obuphezulu.
Izixhobo ze-PCD, ngelixa zinzima kakhulu, azikwazi ukunyamezela amaqondo aphezulu kakhulu kwaye zinokulahlekelwa ngumda wazo phantsi kweemeko ezinjalo.
Ukuqwalaselwa kweendleko:
Izixhobo ze-CBN zithande ukufikeleleka ngakumbi kunezixhobo ze-PCD, njengoko i-PCD ifuna iinkqubo zokuvelisa ezintsonkothileyo kwaye imathiriyeli ekrwada ngokwayo ibiza kakhulu.
UkuGqiba komphezulu kunye nokuchaneka:
Izixhobo ze-PCD zifaneleke ngakumbi ekufezekiseni umphezulu ocolekileyo kakhulu, ngakumbi kwizinto ezingenayo i-ferrous.
Izixhobo ze-CBN, ngelixa zichanekile, zigqwesa ngakumbi ekomeleleni nasekusikeni ukuqina kunokufikelela esona siphelo siphezulu somphezulu kwizinto ezithambileyo.
Zombini izixhobo zokusika ze-CBN kunye ne-PCD CNC zibonelela ngokusebenza okubalaseleyo, kodwa zibonelela ngeemfuno ezahlukeneyo zomatshini. Izixhobo ze-CBN zifanelekile kwizinto ezinzima, izinto ezinzima kunye nezicelo eziphezulu zokushisa, ngelixa izixhobo ze-PCD zikhanya xa zisebenza ngeentsimbi ezithambileyo kunye nezixhobo ezidibeneyo, ukubonelela ubomi besixhobo eside kunye nokusebenza kakuhle kokusika. Ukukhetha phakathi kwezi zimbini kuxhomekeke kwizinto ezithile ezenziwa ngoomatshini, ubomi besixhobo esifunekayo, kunye nokusingqongileyo komatshini.
