Woza uqonde insimbi enesivinini esikhulu
High-speed steel (HSS) iyinsimbi eyithuluzi enobulukhuni obuphezulu, ukumelana nokugqokwa okuphezulu nokumelana nokushisa okuphezulu, eyaziwa nangokuthi insimbi yomoya noma insimbi yangaphambili, okusho ukuthi ingaqina ngisho nalapho ipholile emoyeni ngesikhathi sokucisha, futhi ibukhali kakhulu.Ibizwa nangokuthi insimbi emhlophe.
Amathuluzi e-Xinfa CNC anezici zekhwalithi enhle nenani eliphansi.Ukuze uthole imininingwane, sicela uvakashele: https://www.xinfatools.com/hss-tap/
Insimbi enesivinini esikhulu insimbi eyingxubevange enokwakheka okuyinkimbinkimbi, equkethe izinto ezakha i-carbide njenge-tungsten, i-molybdenum, i-chromium, i-vanadium, ne-cobalt.Inani eliphelele lezakhi ze-alloying lingaba ngu-10-25%.Isengakwazi ukugcina ubulukhuni obuphezulu ngaphansi kwesimo sokushisa okuphezulu okukhiqizwa ukusika ngesivinini esikhulu (cishe 500 ℃), futhi i-HRC yayo ingaba ngaphezu kwama-60. Lesi yisici esibaluleke kakhulu sensimbi enesivinini esikhulu - ubulukhuni obomvu.Ngemva kokucisha kanye nezinga lokushisa eliphansi lokushisa, insimbi yensimbi ye-carbon inobunzima obuphezulu ekamelweni lokushisa, kodwa lapho izinga lokushisa lingaphezu kuka-200 ° C, ukuqina kwehla kakhulu, futhi ukuqina kwehle kuya ezingeni elifana nelesimo se-annealed. 500°C., Ilahlekelwe ngokuphelele ikhono lokusika insimbi, ekhawulela ukusetshenziswa kwensimbi yensimbi ye-carbon amathuluzi okusika.Insimbi enesivinini esikhulu yenza ukushiyeka okubulalayo kwensimbi yensimbi ye-carbon ngenxa yokuqina kwayo okuhle okubomvu.
Insimbi enesivinini esikhulu isetshenziswa ikakhulukazi ukwenza izindwani ezincane eziyinkimbinkimbi namathuluzi okusika ensimbi amelana nomthelela, kanye nama-bearings ashisa kakhulu kanye ne-cold extrusion efayo, njengamathuluzi okujika, izinsimbi zokubhoboza, ama-hobs, ama-saw blades, kanye nezibungu ezifunayo.
▌ Masifunde ngensimbi ye-tungsten
Insimbi ye-Tungsten (i-tungsten carbide) inochungechunge lwezakhiwo ezinhle kakhulu njengokuqina okuphezulu, ukumelana nokugqoka, amandla amahle nokuqina, ukumelana nokushisa nokumelana nokugqwala, ikakhulukazi ubulukhuni bayo obuphezulu nokumelana nokugqoka, ngisho nasezingeni lokushisa lika-500 ° C. Ihlala ngokuyisisekelo ayishintshile, futhi isenokuqina okuphezulu ku-1000 ° C.
Insimbi ye-Tungsten, izakhi eziyinhloko i-tungsten carbide ne-cobalt, eyenza u-99% wazo zonke izingxenye, kanti i-1% ingenye izinsimbi, ngakho ibizwa ngokuthi i-tungsten steel, eyaziwa nangokuthi i-cemented carbide, futhi ibhekwa njengezinyo lesimanjemanje. imboni.
Insimbi ye-Tungsten iyinhlanganisela ehlanganisiwe eyakhiwe okungenani i-carbide yensimbi eyodwa.I-Tungsten carbide, i-cobalt carbide, i-niobium carbide, i-titanium carbide, ne-tantalum carbide yizingxenye ezivamile zensimbi ye-tungsten.Usayizi wokusanhlamvu wengxenye ye-carbide (noma isigaba) ngokuvamile uphakathi kwama-microns angu-0.2-10, futhi izinhlamvu ze-carbide zibanjwe ndawonye zisebenzisa i-binder yensimbi.Izinsimbi zokuhlanganisa ngokuvamile ziyizinsimbi zeqembu lensimbi, ezivame ukusetshenziswa yi-cobalt ne-nickel.Ngakho-ke, kukhona ama-alloys e-tungsten-cobalt, ama-tungsten-nickel alloys nama-tungsten-titanium-cobalt alloys.
I-sintering yensimbi ye-tungsten ukucindezela impushana ibe yi-billet, bese uyishisisa esithandweni somlilo ezingeni lokushisa elithile (izinga lokushisa le-sintering), uyigcine isikhathi esithile (isikhathi sokubamba), bese uyipholisa ukuze uyithole. impahla yensimbi ye-tungsten enezinto ezidingekayo.
① I-tungsten-cobalt cemented carbide
Izingxenye eziyinhloko yi-tungsten carbide (WC) ne-binder cobalt (Co).Ibanga layo lakhiwe ngokuthi "YG" (okuqala be-pinyin yesiShayina yokuthi "hard, cobalt") kanye nephesenti lokuqukethwe kwe-cobalt okumaphakathi.Isibonelo, i-YG8 isho ukuthi isilinganiso se-WCo=8%, kanti enye i-tungsten-cobalt cemented carbide ye-tungsten carbide.
②I-tungsten-titanium-cobalt eyenziwe nge-carbide enosimende
Izingxenye eziyinhloko yi-tungsten carbide, i-titanium carbide (TiC) ne-cobalt.Ibanga layo lakhiwe ngokuthi “YT” (okuqala kwe-pinyin yesiShayina ethi “hard, titanium”) kanye nesilinganiso sokuqukethwe kwe-titanium carbide.Isibonelo, i-YT15 isho ukuthi isilinganiso se-TiC=15%, kanti enye i-tungsten carbide ne-cobalt-based tungsten-titanium-cobalt cemented carbide.
③I-tungsten-titanium-tantalum (niobium)-based carbide enosimende
Izingxenye eziyinhloko yi-tungsten carbide, i-titanium carbide, i-tantalum carbide (noma i-niobium carbide) ne-cobalt.Lolu hlobo lwe-carbide enosimende lubizwa nangokuthi i-general cemented carbide noma i-universal cemented carbide.Ibanga layo lakhiwe ngokuthi “YW” (osokuqala be-pinyin yesiShayina ethi “hard” nelithi “wan”) kanye nenombolo yokulandelana, njenge-YW1.
Insimbi ye-Tungsten inochungechunge lwezakhiwo ezinhle kakhulu njengokuqina okuphezulu, ukumelana nokugqoka, amandla amahle kanye nokuqina, ukumelana nokushisa nokumelana nokugqwala, ikakhulukazi ubulukhuni bayo obuphezulu nokumelana nokugqoka, okuhlala kungashintshile ngisho nasezingeni lokushisa elingu-500 ° C.Isenokuqina okuphezulu ku-1000°C.I-carbide enosimende isetshenziswa kakhulu njengento esetshenziswayo, njengamathuluzi okujika, abasiki bokugaya, ama-drill, amathuluzi ayisicefe, njll. Ijubane lokusika le-carbide entsha enosimende liphindwe izikhathi ezingamakhulu kune-carbon steel.
Isikhathi sokuthumela: Aug-09-2023
