I-Hard alloy yi-alloy eyenziwe ngokukodwa okanye i-refractory carbides (efana ne-tungsten carbide, i-titanium carbide, njl. njl.) kwifom yomgubo, kunye ne-metal powders (efana ne-cobalt, i-nickel) esebenza njenge-binder.Yenziwa ngenkqubo yomgubo wesinyithi.I-Hard alloy isetyenziselwa ukuvelisa izixhobo zokusika ngesantya esiphezulu kunye nezixhobo zokusika izinto ezinzima kunye nezinzima.Ikwasetyenziswa kwimveliso yokufa okubandayo okusebenzayo, iigeyiji ezichanekileyo, kunye nezinto ezikwaziyo ukunxiba ezixhathisayo kwimpembelelo kunye nokungcangcazela.
▌ Iimpawu zeHard Alloy
(1)Ubunzima obuphezulu, ukumelana nokunxiba, kunye nobunzima obubomvu.
I-alloy enzima ibonisa ubunzima be-86-93 HRA kwiqondo lokushisa, elilingana ne-69-81 HRC.Igcina ubunzima obuphezulu kumaqondo obushushu angama-900-1000 ° C kwaye inokumelana nokunxiba okugqwesileyo.Xa kuthelekiswa nentsimbi yesixhobo esinesantya esiphezulu, i-alloy eqinile yenza ukuba isantya sokusika sibe ngama-4-7 amaxesha aphezulu kwaye inobomi obuhlala amaxesha angama-5-80 ubude.Inokusika izinto eziqinileyo ezinobunzima obufikelela kuma-50HRC.
(2)Amandla aphezulu kunye ne-elastic modulus ephezulu.
I-Hard alloy inamandla aphezulu okuxinzelela ukuya kwi-6000 MPa kunye ne-elastic modulus ukusuka (4-7) × 10 ^ 5 MPa, zombini ziphakamileyo kunezo zentsimbi ephezulu.Nangona kunjalo, amandla ayo okuguquguquka aphantsi, ngokuqhelekileyo ukusuka kwi-1000-3000 MPa.
(3)Ukumelana nokugqwesa kokugqwesa kunye nokumelana ne-oxidation.
I-Hard alloy ngokubanzi ibonisa ukuxhathisa okulungileyo kwi-corrosion ye-atmospheric, i-acids, i-alkalis, kwaye ayifuni kakhulu kwi-oxidation.
(4)I-coefficient ephantsi yokwandiswa komgca.
I-Hard alloy igcina imilo ezinzileyo kunye nemilinganiselo ngexesha lokusebenza ngenxa ye-coefficient ephantsi yokwandiswa komgca.
(5)Iimveliso ezibunjiweyo azifuni umatshini owongezelelweyo okanye ukugaya kwakhona.
Ngenxa yokuqina kwayo okuphezulu kunye nokuqina kwayo, i-alloy eqinile ayiqhubeki nokusika okanye ukugaywa kwakhona emva kokwenziwa kwesinyithi somgubo kunye nokuntywila.Ukuba inkqubo eyongezelelweyo iyafuneka, iindlela ezinjengomatshini wokukhupha umbane, ukusika ucingo, ukugaya i-electrolytic, okanye ukugaya okukhethekileyo ngamavili okugaya kuyasetyenziswa.Ngokwesiqhelo, iimveliso zealloyi eziqinileyo zobukhulu obuthile zibotshwa, zibotshwe, okanye zibotshelelwe ngoomatshini kwimizimba yesixhobo okanye iziseko zokungunda ukuze zisetyenziswe.
▌ Iintlobo eziqhelekileyo zeHard Alloy
Iintlobo ze-alloy eziqhelekileyo eziqhelekileyo zihlelwa kwiindidi ezintathu ezisekelwe ekubunjweni kunye neempawu zokusebenza: i-tungsten-cobalt, i-tungsten-titanium-cobalt, kunye ne-tungsten-titanium-tantalum (niobium) alloys.Eyona nto isetyenziswa kakhulu kwimveliso yi-tungsten-cobalt kunye ne-tungsten-titanium-cobalt hard alloys.
(1)I-Tungsten-Cobalt Hard Alloy:
Amacandelo aphambili yi-tungsten carbide (WC) kunye ne-cobalt.Ibakala lichazwa yikhowudi ethi "YG", ilandelwa yipesenti yomxholo we-cobalt.Ngokomzekelo, i-YG6 ibonisa i-tungsten-cobalt i-alloy enzima kunye ne-6% ye-cobalt umxholo kunye ne-94% ye-tungsten carbide content.
(2)I-Tungsten-Titanium-Cobalt Hard Alloy:
Amacandelo aphambili yi-tungsten carbide (WC), i-titanium carbide (TiC), kunye ne-cobalt.Ibakala lichazwa yikhowudi "YT", ilandelwa yipesenti ye-titanium carbide content.Ngokomzekelo, i-YT15 ibonisa i-tungsten-titanium-cobalt i-alloy eqinile ene-15% ye-titanium carbide content.
(3)I-Tungsten-Titanium-Tantalum (Niobium) i-Hard Alloy:
Olu hlobo lwe-alloy elukhuni lukwaziwa njenge-alloy enzima yendalo yonke okanye i-alloy enzima eguqukayo.Amacandelo aphambili yi-tungsten carbide (WC), titanium carbide (TiC), i-tantalum carbide (TaC), okanye i-niobium carbide (NbC), kunye ne-cobalt.Ibakala liboniswa yikhowudi ethi "YW" (oonobumba bokuqala baka-"Ying" no-"Wan," gama elo elithetha nzima nelithi jikelele ngesiTshayina), lilandelwa linani.
▌ Usetyenziso lweHard Alloy
(1)Izixhobo zesixhobo sokusika:
I-Hard alloy isetyenziswa ngokubanzi kwimveliso yezixhobo zokusika izixhobo, kubandakanywa izixhobo zokuguqula, ii-gritters zokugaya, i-planer blades, i-drills, njl. , ubhedu olutyhidiweyo, nomthi oyintlanganisela.I-Tungsten-titanium-cobalt i-alloys eqinile ifanelekile kwi-chip machining ende yentsimbi kunye nezinye izinyithi ze-ferrous.Phakathi kwee-alloys, abo banomxholo ophezulu we-cobalt bafanelekile ukukhwabanisa, ngelixa abo banomxholo ophantsi we-cobalt bafanelekile ukugqiba.Iialloyi eziqinileyo zendalo yonke zinobomi obude besixhobo xa kusetyenzwa nzima-ukusika izinto ezifana nentsimbi engatyiwayo.
(2)Izinto zokungunda:
I-Hard alloy idla ngokusetyenziswa njengesixhobo sokwenza umzobo obandayo uyafa, isitampu esibandayo siyafa, i-extrusion ebandayo iyafa, kunye nentloko ebandayo iyafa.
I-Hard alloy ebandayo izihloko ezifayo zixhomekeke ekunxityweni phantsi kweempembelelo okanye iimeko zempembelelo ezinamandla.Iimpawu eziphambili ezifunekayo bukuqina kwempembelelo elungileyo, ukomelela kokwaphuka, amandla okudinwa, amandla okugoba, kunye nokunganyangeki okugqwesileyo kokunxiba.Ngokuqhelekileyo, umxholo we-cobalt ophezulu kunye ne-medium to coarse-grained alloys zikhethiweyo.Amanqaku aqhelekileyo aquka i-YG15C.
Ngokubanzi, kukho ukurhweba phakathi kokumelana nokunxiba kunye nokuqina kwezixhobo eziqinileyo zealloy.Ukuphucula ukuxhathisa ukunxiba kuya kubangela ukuhla kokuqina, ngelixa ukuqinisa ukuqina kuya kukhokelela ekunciphiseni.
Ukuba uphawu olukhethiweyo lulula ukuvelisa ukuqhekeka kwangaphambili kunye nomonakalo ekusebenziseni, kuyafaneleka ukukhetha uphawu olunobunzima obuphezulu;Ukuba uphawu olukhethiweyo lulula ukuvelisa ukunxiba kwangaphambili kunye nomonakalo ekusetyenzisweni, kuyafaneleka ukukhetha uphawu olunobunzima obuphezulu kunye nokumelana nokugqoka okungcono.La mabanga alandelayo: YG15C, YG18C, YG20C, YL60, YG22C, YG25C ukusuka kwesobunxele ukuya kwesokudla, ubunzima buyancipha, ukuchasana kokugqoka kuyancipha, ukuqina kuphuculwe;Ngokwahlukileyo koko, kuyinyaniso okwahlukileyo.
(3) Izixhobo zokulinganisa kunye namalungu angagugiyo
I-tungsten carbide isetyenziselwa i-abrasive surface inlays kunye neenxalenye zezixhobo zokulinganisa, iibheringi ezichanekileyo zoomatshini bokusila, izikhokelo kunye nemivalo yesikhokelo soomatshini bokusila abangenaziko, kunye neendawo ezingagugiyo ezifana namaziko e-lathe.
Ixesha lokuposa: Aug-02-2023
