Izixhobo zokusika iCarbide eneCemented

I-Tungsten carbide yiklasi esetyenziswa kakhulu kwi-high-speed machining (HSM) izixhobo zesixhobo, izinto ezinjalo ziveliswa yinkqubo ye-powder metallurgy, equkethe i-carbide enzima (ngokuqhelekileyo i-tungsten carbide WC) iinqununu kunye ne-soft metal bonding. Okwangoku, kukho amakhulu eenxalenye ezahlukeneyo ze-WC-based cemented carbide, uninzi lwazo zisebenzisa i-cobalt (Co) njengebhondi, i-nickel (Ni) kunye ne-chromium (Cr) zikwasetyenziswa ngokuqhelekileyo izinto ezidibanisayo, ukongeza kwezinye i-alloying. izinto ezinokongezwa. Kutheni kukho amabanga amaninzi kangaka e-carbide? Umenzi wesixhobo sokusika ukhetha njani isixhobo esifanelekileyo senkqubo ethile yokusika? Ukuphendula le mibuzo, makhe siqale sijonge kwiipropathi ezahlukeneyo ezenza i-carbide enesamente ibe sisixhobo esifanelekileyo sokusika.

Ukuqina kunye nokuqina:I-WC-Co carbide ineenzuzo ezizodwa kuzo zombini ubulukhuni kunye nokuqina. I-Tungsten carbide (WC) ngokwayo inobunzima obuphezulu (ngaphezu kwe-corundum okanye i-alumina), kwaye ubunzima bayo abunqabile xa ubushushu bokusebenza buphakama. Nangona kunjalo, ayinabo ukuqina okwaneleyo, okuyipropati ebalulekileyo kwizixhobo zokusika. Ukuze kuthatyathwe ithuba lobunzima obuphezulu be-tungsten carbide kunye nokuphucula ukuqina kwayo, abantu basebenzisa i-metal bonding agents ukudibanisa i-tungsten carbide kunye, ukuze le nto inobunzima obugqithise kakhulu kwintsimbi ye-high-speed, kwaye kwangaxeshanye ingakwazi. ukumelana namandla okusika kwiinkqubo ezininzi zokusika. Ukongeza, inokumelana nobushushu obuphezulu bokusika obuveliswa ngoomatshini besantya esiphezulu.

Namhlanje, phantse zonke izixhobo ze-WC-Co kunye neeblades zigqunywe, ngoko ke indima yezinto ezisisiseko ibonakala ingabalulekanga. Kodwa eneneni, yi-coefficient ephezulu ye-elastic ye-WC-Co (umlinganiselo wokuqina, i-coefficient ye-elastic yegumbi ye-WC-Co imalunga nokuphinda-phindwe kathathu kwentsimbi enesantya esiphezulu) ebonelela ngokutyalwa ngento engaguqukiyo. isiseko. I-WC-Co matrix ikwabonelela ngokuqina okufunekayo. Ezi zakhiwo ziimpawu ezisisiseko zemathiriyeli ye-WC-Co, kodwa kuyenzeka ukuba ulungelelanise iipropati eziphathekayo ngokulungelelanisa ukwakheka kwezinto kunye ne-micro-structure xa uvelisa umgubo we-carbide onesamente. Ke ngoko, ukufaneleka kweempawu zesixhobo kwinkqubo ethile kuxhomekeke kakhulu kwinkqubo yokuqala yokucolwa.

Ukuqukumbela, ulwazi olusisiseko lwesixhobo ngasinye sokusika kunye nokusebenza kwayo kubalulekile xa kusenziwa ukhetho oluchanekileyo. Iingqwalasela ziquka isixhobo sokusebenza izinto eziza kwenziwa, uhlobo lwecandelo kunye nokumila, iimeko zomatshini kunye nomgangatho womphezulu ofunekayo kumsebenzi ngamnye. Kuyabonakala ukuba, i-cemented lukhetho olulungileyo lokwenza izixhobo zokusika, i-ZZBETTER Carbide Tools Company ineminyaka engaphezu kweshumi yamava okuvelisa phantse zonke iintlobo zezixhobo ze-tungsten carbide.

Wamkelekile ukuba uqhagamshelane nathi ukuba unombuzo okanye imfuno malunga nezixhobo ze-carbide ze-cemented, siyakwazi ukwenza iimveliso ezingezizo ezisemgangathweni kuphela xa unikezela ngemizobo yakho.