① Ubunzima obuphezulu: isixhobo se-carbide esine-cemented senziwe nge-carbide enobunzima obuphezulu kunye nendawo yokunyibilika (ebizwa ngokuba yisigaba esinzima) kunye ne-binder yensimbi (ebizwa ngokuba yi-bonding phase) nge-powder metallurgy method, ukuqina kwayo kufikelela kwi-89 ~ 93HRA, iphakamileyo kakhulu kune-high-speed steel, kwi-5400C, ubunzima busenokufikelela kwi-82 ~ 87HRA, kunye nobulukhuni bentsimbi yesantya esiphezulu kwindawo yokushisa (83 ~ 86HRA) efanayo.Ixabiso lobunzima be-carbide ene-cemented lihluka ngohlobo, ubuninzi, ubungakanani be-particle size kunye nomxholo wesigaba sokudibanisa isinyithi, kwaye ngokuqhelekileyo sinciphisa ngokunyuka komxholo wesigaba sentsimbi.Ukuqina kwe-alloy ye-YT kuphezulu kunolo lwe-alloy ye-YG xa umxholo wesigaba se-bonding ufana, kwaye i-alloy ene-TaC(NbC) inobulukhuni obuphezulu bobushushu obuphezulu.
② Amandla okugoba kunye nokuqina: amandla okugoba e-carbide enesamente esetyenziswa ngokuqhelekileyo akuluhlu lwe-900 ~ 1500MPa.Ukuphakama komxholo wesigaba sokudibanisa isinyithi, ukuphakama kwamandla okugoba.Xa umxholo we-adhesive ufana, amandla e-YG (WC-Co) alloy aphezulu kune-YT (WC-TiC-Co) alloy, kwaye amandla ayancipha ngokunyuka komxholo we-TiC.I-Tungsten carbide yinto enqabileyo, kwaye ukuqina kwayo kwempembelelo kwiqondo lokushisa kwegumbi yi-1/30 kuphela kwi-1/8 yensimbi enesantya esiphezulu.
(3) Isixhobo se-carbide esisetyenziswa ngokuqhelekileyo
Ingxubevange ye-YG isetyenziselwa ikakhulu ukusetyenzwa kwentsimbi etyhidiweyo, iintsimbi ezingenayo intsimbi kunye nemathiriyeli engeyiyo eyentsimbi.I-fine-grain carbide (efana ne-YG3X, YG6X) kumlinganiselo ofanayo we-cobalt kunobunzima beenkozo kunye nokumelana nokunxiba kuphezulu, ilungele ukusetyenzwa kwesinyithi esikhethekileyo esiqinileyo, i-austenitic stainless steel, i-alloy ukumelana nobushushu, i-titanium alloy, ubhedu obunzima. kunye nezinto zokugquma ezingagugiyo.
Iinzuzo ezibalaseleyo zeklasi ye-YT ye-cemented carbide bubunzima obuphezulu, ukumelana nobushushu obuhle, ubunzima obuphezulu beqondo lokushisa kunye namandla oxinzelelo kuneklasi ye-YG, ukuxhathisa okulungileyo kwe-oxidation.Ke ngoko, xa imela ifuneka ukuba ibe nokumelana nobushushu obuphezulu kunye nokumelana nokunxiba, uphawu olunomxholo ophezulu we-TiC kufuneka lukhethwe.I-alloy ye-YT ilungele ukusetyenzwa kwezixhobo zeplastiki njengentsimbi, kodwa ayifanelekanga ukusetyenzwa kwe-titanium alloy, i-silicon aluminium alloy.
Ingxubevange ye-YW ineempawu ze-YG kunye ne-YT alloys, kwaye zineempawu ezilungileyo ezibanzi.Ingasetyenziselwa ukucutshungulwa kwentsimbi, isinyithi esityhidiweyo kunye neentsimbi ezingenayo i-ferrous.Ii-alloys ezinjalo, ukuba zonyuswe ngokufanelekileyo umxholo we-cobalt, zinokuba namandla kakhulu kwaye zingasetyenziselwa umatshini omdaka kunye nokusika okuphakathi kwezinto ezahlukeneyo ezinzima.
Ixesha lokuposa: Dec-04-2023