Mō Carbide Sima (I)

1.Ko te Waa Matua o te Carbide Sima
Ko te carbide cimented he mea hanga mai i te pakeke-nui, ko te carbide whakarewa (WC, TiC) te paura micron hei waahanga matua, me te cobalt (Co), te nickel (Ni), me te molybdenum (Mo) hei here. Ka taea te whakamahi i roto i te oumu korehau, i te hauwai ranei nga hua metallurgy paura kua tihorea ki roto i te oumu whakaheke.
Hei tauira:
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2.Ko te Tito o nga taputapu o te carbide cimented
Ko nga taputapu o te carbide cimented e rua nga waahanga: ko tetahi waahanga ko te waahanga whakapakeke, ko tetahi atu waahanga ko te whakarewa hononga.
Ko te wahanga whakapakeke ko te carbide o nga konganuku whakawhiti i roto i te tepu waahi, penei i te tungsten carbide, te titanium carbide, me te tantalum carbide. He tiketike rawa to ratou pakeke, a kei runga ake i te 2000°C o ratou wahi whakarewa, a ko etahi ka neke ake i te 4000°C. I tua atu, he rite nga ahuatanga o nga nitrides konganuku whakawhiti, boride, me te silicides, ka taea hoki te mahi hei wahanga whakapakeke i roto i te carbide cimented. Ko te noho o te wahanga whakapakeke ka whakatau he tino pakeke te koranu me te mau atete.
Ko te whakarewa hononga he rino roopu roopu, ko te cobalt me ​​te nickel te nuinga o te whakamahi.

3.Me pehea te mahi a ia waahanga i roto i te hanga
I te wa e hanga ana te carbide cimented, ko te rahi o te matūriki o te paura rauemi mata kua tohua e te wheketere carbide cimented kei waenga i te 1 me te 2 microns, a he tino tiketike te ma. Ko nga rauemi mata kua konatunatua kia rite ki te owehenga titonga kua tohua, ka taapirihia te waipiro me etahi atu reo ki te huri makuku i roto i te mira poro makuku kia tino whakaranuhia, kia pakaru. I muri i te whakamaroketanga me te tatari, ka taapirihia he mahanga whakaniko penei i te ware pi, te kapia ranei. Ka whiwhihia te ranunga ma te tatari. Na, i te wa e pupuhihia ana te ranunga me te pehia, ka wera ki te kati ki te waahi whakarewa o te whakarewa o te whakarewa (1300-1500 ° C), ko te wahanga pakeke me te whakarewa ka hangaia he koranu eutectic. Whai muri i te whakamataotanga, ka tohatohahia te wahanga whakapakeke ki roto i te matiti i tito mai i te konganuku honohono, ka hono tata ki a ratau kia hangai he katoa. Ko te pakeke o te carbide cimented e whakawhirinaki ana ki te kiko o te wahanga whakapakeke me te rahi o te witi, ara, ko te teitei ake o te kiko o te wahanga whakapakeke me te pai o nga kakano, ka nui ake te pakeke. Ko te pakari o te carbide cimented ka whakatauhia e te whakarewa here. Ko te teitei o te ihirangi o te whakarewa here, ka nui ake te kaha piko.


Wā tuku: Maehe-15-2021