Ra'ayin carbide da aka yi da siminti: wani abu mai haɗe-haɗe da aka samar ta hanyar ƙarfe na foda wanda ya ƙunshi fili mai jujjuyawa (lokaci mai wuya) da ƙarfe mai ɗaure (ƙara mai ɗaure).
Matrix na siminti carbide ya ƙunshi sassa biyu: Sashe ɗaya shine lokacin taurare: ɗayan ɓangaren shine ƙarfe mai haɗawa.
A taurare lokaci ne carbide na mika mulki karafa a cikin lokaci-lokaci tebur na abubuwa, kamar tungsten carbide, titanium carbide, tantalum carbide, wanda suke da wuya sosai kuma suna da wani narkewa batu na fiye da 2000 ℃, wasu ma fiye da 4000 ℃.Bugu da kari, nitrides karfe mika mulki, borides, silicides kuma suna da irin wannan kaddarorin kuma za a iya amfani da matsayin hardening matakai a siminti carbide.Kasancewar lokaci mai taurare yana ƙayyade ƙayyadaddun taurin gaske da juriya na gami.
Ƙarfe na haɗin gwiwa gabaɗaya ƙarfen rukunin ƙarfe ne, galibi cobalt da nickel.Don samar da simintin carbide, an zaɓi foda mai albarkatun ƙasa tare da girman barbashi tsakanin 1 da 2 microns da babban matakin tsabta.Ana yin amfani da albarkatun ƙasa bisa ga tsarin da aka tsara, an ƙara shi zuwa barasa ko wasu kafofin watsa labarai a cikin injin ƙwallon rigar, rigar niƙa, don haka sun kasance cikakke gauraye, niƙa, bushe, sieved kuma ƙara da kakin zuma ko danko da sauran nau'ikan gyare-gyare. wakilai, sa'an nan kuma bushe, sieved da kuma sanya a cikin cakuda.Sa'an nan cakuda da aka granulated, manne, kuma mai tsanani zuwa kusa da narkewa batu na bonded karfe (1300 ~ 1500 ℃), da taurare lokaci da bonded karfe zai samar da wani eutectic gami.Bayan sanyaya, an rarraba lokaci mai taurare a cikin lattice da aka haɗa da ƙarfe da aka haɗa kuma an haɗa shi da juna don samar da cikakke cikakke.Tauri na siminti carbide ya dogara da lokacin tauraruwar abun ciki da girman hatsi, watau mafi girman abun ciki na lokaci da mafi kyawun girman hatsi, mafi girman taurin.Ƙarfin siminti na siminti yana ƙaddara ta hanyar haɗin gwiwa, kuma mafi girman abun ciki na haɗin gwiwa, mafi girma ƙarfin lanƙwasawa.
Halayen asali na simintin carbide:
1) High taurin, high lalacewa juriya
2) High modules na elasticity
3) Babban ƙarfin matsawa
4) Good sinadaran kwanciyar hankali (acid, alkali, high zafin jiki hadawan abu da iskar shaka juriya)
5) Rashin ƙarfi tauri
6) Low coefficient na fadada, thermal da lantarki watsin kama da baƙin ƙarfe da alloys
Aikace-aikacen carbide da aka yi da siminti: kayan aikin kayan aiki na zamani, kayan sawa masu juriya, babban zafin jiki da kayan juriya na lalata.
Amfanin kayan aikin carbide (idan aka kwatanta da ƙarfe na alloy):
1) Exponentally, dozin ko ma ɗaruruwan lokuta don inganta rayuwar kayan aiki.
Metal sabon kayan aiki rayuwa za a iya ƙara da 5-80 sau, gage rayuwa ya karu da 20-150 sau, mold rayuwa ya karu da 50-100 sau.
2) Ƙara saurin yankan ƙarfe da saurin hako ɓawon burodi da yawa da sau goma.
3) Inganta girman daidaito da kuma saman gama na machined sassa.
4) Yana yiwuwa a aiwatar da kayan aiki mai wuyar gaske kamar gawa mai jurewa zafi, gami da tasirin ƙarfe da ƙarfe mai ƙarfi, waɗanda ke da wahalar sarrafawa ta ƙarfe mai sauri.
5) Zai iya yin wasu sassa masu jure lalata ko zafin jiki mai jurewa lalacewa, don haka inganta daidaito da rayuwar wasu injina da kayan aiki.
Rarraba Cemented Carbide:
1. WC-Co (tungsten drill) nau'in gami: wanda ya ƙunshi tungsten carbide da cobalt.Wani lokaci a cikin kayan aikin yankan (wani lokacin kuma a cikin kayan aikin gubar) ƙara 2% ko žasa na sauran carbide (tantalum carbide, niobium carbide, vanadium carbide, da dai sauransu) a matsayin ƙari.Babban cobalt: 20-30%, matsakaici cobalt: 10-15%, low cobalt: 3-8%
2. WC-TiC-Co (tungsten-iron-cobalt) - nau'in gami.
Low titanium gami: 4-6% TiC, 9-15% Co
Matsakaici Chin gami: 10-20% TiC, 6-8% Co
High titanium gami: 25-40% TiC, 4-6% Co
3.WC-TiC-TaC(NbC) -Co gami.
WC-TiC-Co gami yana da mafi kyawun juriya na iskar shaka mai zafi da kuma mafi kyawun tashin hankali na thermal, don haka galibi yana da rayuwar kayan aiki mafi girma.TiC: 5-15%, TaC (NbC): 2-10%, Co: 5-15%, sauran shine WC.
4. Karfe ciminti carbide: hada da tungsten carbide ko titanium carbide da carbon karfe ko gami karfe.
5. Titanium carbide tushen gami: hada da carbon fiye da titanium, nickel karfe da molybdenum karfe ko molybdenum carbide (MoC).Jimlar abun ciki na nickel da molybdenum yawanci shine 20-30%.
Ana iya amfani da Carbide don yin rotary burr, CNC ruwan wukake, masu yankan niƙa, wukake madauwari, wuƙaƙen tsagawa, wuƙaƙen katako, igiyoyin gani, sandunan carbide, da sauransu.
Lokacin aikawa: Jul-07-2023