I-cemented carbide concept: i-composite material eveliswa ngumgubo we-metallurgy oquka i-refractory metal compound (isigaba esinzima) kunye nentsimbi edibeneyo (isigaba esidityanisiweyo).
I-matrix ye-carbide enesamente inamacandelo amabini: Inxalenye enye sisigaba sokuqina: Elinye inxalenye yintsimbi edibeneyo.
Inqanaba eliqinileyo yikhabhide yeentsimbi eziguqukayo kwitafile yeperiodi yezinto, ezifana netungsten carbide, titanium carbide, tantalum carbide, eziqine kakhulu kwaye zinendawo yokunyibilika engaphezulu kwe2000℃, ezinye nangaphezulu kwe4000℃.Ukongezelela, i-nitrides yensimbi yenguqu, i-borides, i-silicides nayo ineempawu ezifanayo kwaye ingasetyenziselwa njengezigaba ezilukhuni kwi-carbide ene-cemented.Ubukho besigaba sobunzima bumisela ubunzima obuphezulu kakhulu kunye nokumelana nokunxiba kwe-alloy.
Iintsimbi ezidityanisiweyo zidla ngokuba ziintsimbi zeqela lentsimbi, ngokuqhelekileyo icobalt kunye nenickel.Ukwenziwa kwe-carbide ene-cemented, i-powder ekrwada ikhethwa kunye nobukhulu be-particle phakathi kwe-1 kunye ne-2 microns kunye neqondo eliphezulu lokucoceka.Izinto eziluhlaza zihlanjululwa ngokomlinganiselo omiselweyo wokubunjwa, zongezwa kwi-alcohol okanye enye imidiya kwi-mill yebhola emanzi, ukugaya okumanzi, ukwenzela ukuba zixutywe ngokupheleleyo, zityunyuzwe, zomiswe, zihlungwe kwaye zongezwe kwi-wax okanye i-gum kunye nezinye iintlobo zokubumba. ii-agent, kwaye zomiswe, zihluzwe kwaye zenziwe ngomxube.Emva koko umxube uhlanjululwe, ucinezele, kwaye ushushu kufuphi nendawo yokuncibilika yentsimbi edibeneyo (1300 ~ 1500 ℃), isigaba esinzima kunye nentsimbi edibeneyo iya kwenza i-eutectic alloy.Emva kokupholisa, isigaba esinzima sisasazwa kwi-lattice eyenziwe ngetsimbi edibeneyo kwaye idibaniswe ngokusondeleyo ukuze yenze yonke into eqinileyo.Ukuqina kwekhabhide enesamente kuxhomekeke kwisiqulatho sesigaba sokuqina kunye nobukhulu beenkozo, oko kukuthi, ukuphakama kwesiqulatho sesigaba sokuqina kunye nokucotha ubungakanani beenkozo, kokukhona ukuqina okukhulu.Ukuqina kwe-carbide ene-cemented kuchongwa yintsimbi edibeneyo, kwaye ukuphakama kwentsimbi edibeneyo, amandla amakhulu okugoba.
Iimpawu ezisisiseko ze-carbide enesamente:
1) Ubunzima obuphezulu, ukuchasana nokunxiba okuphezulu
2) Imodyuli ephezulu ye-elasticity
3) Amandla aphezulu oxinzelelo
4) Uzinzo olulungileyo lwekhemikhali (iasidi, ialkali, ukumelana nobushushu obuphezulu be-oxidation)
5) Ukuqina kwempembelelo ephantsi
6) I-coefficient ephantsi yokwandisa, i-thermal kunye ne-conductivity yombane efana nentsimbi kunye ne-alloys yayo.
Ukusetyenziswa kwe-carbide eyenziwe ngesamente: izixhobo zale mihla, izixhobo zokunxiba, ubushushu obuphezulu kunye nezixhobo ezinganyangekiyo.
Izinto ezilungileyo zezixhobo ze-carbide (xa kuthelekiswa nentsimbi ye-alloy):
1) Ngokucacileyo, ngamashumi okanye amakhulu amaxesha ukuphucula ubomi besixhobo.
Ubomi besixhobo sokusika isinyithi bunganyuswa ngamaxesha angama-5-80, ubomi be-gage bunyuke ngamaxesha angama-20-150, ubomi bokubumba bunyuke ngamaxesha angama-50-100.
2) Yandisa isantya sokusika isinyithi kunye nesantya sokugaya i-crust exponentially kunye namashumi amaxesha.
3)Phucula ukuchaneka komda kunye nokugqitywa komphezulu wamalungu omatshini.
I-4) Kunokwenzeka ukucubungula izinto ezinzima zomatshini ezifana ne-alloy-resistant-resistant alloy, i-alloy effect kunye ne-extra-hard cast cast iron, enzima ukuyiqhuba nge-high-speed steel.
I-5)Inokwenza iindawo ezithile ezinganyangekiyo okanye zikwazi ukumelana nobushushu obuphezulu, ngaloo ndlela ziphucula ukuchaneka kunye nobomi bomatshini kunye nezixhobo ezithile.
Ukuhlelwa kweCarbide eneCemented:
1. I-WC-Co (i-tungsten drill) uhlobo lwe-alloy: yenziwe nge-tungsten carbide kunye ne-cobalt.Ngamanye amaxesha kwisixhobo sokusika (ngamanye amaxesha nakwisixhobo esikhokelayo) yongeza i-2% okanye ngaphantsi kwenye i-carbide (i-tantalum carbide, i-niobium carbide, i-vanadium carbide, njl.) njengezongezo.I-cobalt ephezulu: i-20-30%, i-cobalt ephakathi: 10-15%, i-cobalt ephantsi: 3-8%
2. I-WC-TiC-Co (i-tungsten-iron-cobalt) -uhlobo lwe-alloy.
I-alloy ye-titanium ephantsi: 4-6% TiC, 9-15% Co
I-alloy ye-Chin ephakathi: 10-20% TiC, 6-8% Co
I-alloy ye-titanium ephezulu: 25-40% TiC, 4-6% Co
3.WC-TiC-TaC(NbC)-Co alloys.
I-WC-TiC-Co ialloy inokumelana nobushushu obuphezulu be-oxidation kunye nokuphazamiseka okungcono kokuphazamiseka kwe-thermal, ngoko ihlala inobomi besixhobo esiphezulu.TiC:5-15%, TaC(NbC):2-10%, Co:5-15%, enye yiWC.
4. I-Steel cemented carbide: yenziwe nge-tungsten carbide okanye i-titanium carbide kunye ne-carbon steel okanye i-alloy steel.
5. I-Titanium carbide esekelwe i-alloy: yenziwe ngekhabhoni kune-titanium, i-nickel metal kunye ne-molybdenum metal okanye i-molybdenum carbide (MoC).Umxholo opheleleyo we-nickel kunye ne-molybdenum ngokuqhelekileyo ngu-20-30%.
I-Carbide ingasetyenziselwa ukwenza i-rotary burr, i-CNC blades, i-milling cutters, iimela ezijikelezayo, iimela zokuqhawula, ii-woodworking blades, ii-saw blades, ii-carbide rods, njl.
Ixesha lokuposa: Jul-07-2023