Sabbin Nau'ikan Carbide Siminti

1. Kyakkyawan hatsi da ultra-lafiya hatsi carbide

Bayan gyare-gyaren hatsi na simintin carbide, girman simintin simintin carbide ya zama ƙarami, kuma lokacin haɗin gwiwa ya fi rarraba a ko'ina a kusa da simintin carbide na siminti, wanda zai iya inganta taurin da kuma sa juriya na simintin carbide. Amma ƙarfin lanƙwasawa yana raguwa. Ana iya inganta ƙarfin lanƙwasawa ta ƙara abun ciki na cobalt a cikin ɗaure daidai. Girman hatsi: kayan aiki gama gari YT15, YG6, da sauransu sune matsakaicin hatsi, matsakaicin girman hatsi shine 2 ~ 3μm；tMatsakaicin girman hatsin hatsi mai kyau shine 1.5 ~ 2μm, kuma na micron hatsi carbide shine 1.0 ~ 1.3μm. Submicrograin carbide shine 0.6 ~ 0.9μm；tya ultra-lafiya crystal carbide ne 0.4 ~ 0.5μm; Nano-jerin microcrystalline carbide shine 0.1 ~ 0.3μm; Kayan aikin yankan carbide na kasar Sin sun kai matakin hatsi mai kyau dasub-lafiyahatsi.

2.TiC tushe carbide

TiC a matsayin babban jiki, yana lissafin fiye da 60% zuwa 80%, tare da Ni ~ Mo a matsayin mai ɗaure, kuma ƙara ƙaramin adadin sauran carbide na gami, wanda ya ƙunshi babu ko ƙasa da WC. Idan aka kwatanta da WC tushe gami, TiC yana da mafi girma taurin a cikin carbide, don haka gami taurin ne kamar yadda HRA90 ~ 94, shi ma yana da high lalacewa juriya, anti-crescentless lalacewa ikon, zafi juriya, hadawan abu da iskar shaka juriya da kuma sinadaran kwanciyar hankali, da kuma kusanci tare da kayan aiki yana ƙarami, ƙarancin juzu'i kaɗan ne, juriya na mannewa yana da ƙarfi, ƙarfin kayan aiki sau da yawa sama da WC, don haka ana iya sarrafa ƙarfe da jefa baƙin ƙarfe. Idan aka kwatanta da YT30, taurin YN10 yana kusa, weldability da kaifi suna da kyau, kuma yana iya maye gurbin YT30. Amma ƙarfin lanƙwasawa bai kai WC ba, galibi ana amfani dashi don gamawa da kammalawa. Saboda ƙarancin juriya ga nakasar filastik da faɗuwar ƙasa, bai dace da yankan nauyi da yanke tsaka-tsaki ba.

3.Carbide da aka yi da siminti tare da abubuwan da ba kasafai ake karawa ba

Rare ƙasa cemented carbide yana cikin nau'ikan kayan aikin siminti na siminti iri-iri, yana ƙara ƙaramin adadin abubuwan da ba kasafai ba (lambobin atomic a cikin tebur na lokaci-lokaci na abubuwan sinadarai sune 57-71 (daga La zuwa Lu), da 21 da 39 (Sc da Y) abubuwa, jimlar abubuwa 17), abubuwan da ba kasafai ake samun su ba suna wanzuwa a cikin (W, Ti)C ko (W, Ti, Ta, Nb)C solid bayani. Zai iya ƙarfafa lokaci mai wuyar gaske, hana haɓakar rashin daidaituwa na hatsi na WC kuma ya sa su zama iri ɗaya, kuma an rage girman hatsi. Ƙananan abubuwan abubuwan da ba kasafai ba suma ana narkar da su a cikin tsarin haɗin gwiwar Co, wanda ke ƙarfafa lokacin haɗin gwiwa kuma yana sa tsarin ya yi yawa. Rare abubuwan da ke ƙasa suna wadatar da su a mahaɗin WC/Co da tsakanin mu'amalar (W, Ti)C, (W, Ti)C, da sauransu, kuma galibi suna haɗawa da ƙazanta S, O, da sauransu, don samar da mahadi irin wannan. kamar yadda RE2O2S, wanda ke inganta tsabta na dubawa kuma yana haɓaka wettability na lokaci mai wuya da kuma haɗin gwiwa. Sakamakon haka, tasirin taurin, ƙarfin lanƙwasa da juriya na tasirin simintin carbide da ba kasafai ba ya inganta sosai. Har ila yau an inganta yanayin zafin ɗakinta da taurin zafin jiki, juriya da juriya da kuma ikon hana yaɗuwa da kuma anti-oxidation a saman kayan aikin. A lokacin yankan, abin mamaki mai arzikin cobalt na saman Layer na ƙasa mai ƙarancin simintin carbide ruwa na iya rage girman juzu'i tsakanin guntu, da kayan aiki da kayan aiki, da rage ƙarfin yankewa. Saboda haka, da inji Properties da yankan Properties an inganta yadda ya kamata. Kasar Sin tana da arzikin albarkatun kasa da ba kasafai ba, kuma bincike da bunkasar simintin carbide da ba kasafai ake samu ba ya wuce sauran kasashe. P, M, K alloys an ƙera su don ƙara darajar duniya da ba kasafai ba.

4.Mai rufi da siminti carbide

Due zuwa ga taurin da kuma sa juriya na siminti carbide yana da kyau, taurin ba shi da kyau, ta hanyar sinadarai mai tururi (CVD) da sauran hanyoyin, a saman simintin carbide mai rufi tare da Layer (5 ~ 12μm) na taurin mai kyau, juriya mai girma. na abu (TiC, TiN, Al2O3), da samuwar siminti mai rufi carbide, don haka yana da duka biyu high taurin da kuma high lalacewa juriya na surface, da kuma mai karfi matrix; Sabili da haka, yana iya inganta rayuwar kayan aiki da ingantaccen aiki, rage ƙarfin yankewa da yankan zafin jiki, haɓaka ingancin injin da aka yi amfani da shi, da haɓaka ƙarfin kayan aiki sosai a cikin saurin yankewa iri ɗaya. A cikin shekaru 20 da suka gabata, wukake na carbide mai rufi sun haɓaka sosai, kuma sun sami fiye da 50% zuwa 60% naindex-mai yiwuwakayayyakin aiki a ci-gaba masana'antu kasashen. Gilashin ruwan wukake sun fi dacewa don ci gaba da juyawa kuma ana amfani da su don kammalawa, kammalawa da ƙarancin nauyi na nau'ikan nau'ikan tsarin ƙarfe na carbon, gami da tsarin ƙarfe (ciki har da daidaitawa da haɓakawa), sassauƙan ƙarancin ƙarfe, ƙarfe na kayan aiki, bakin ƙarfe na martensitic da simintin toka. baƙin ƙarfe.

5. Babban darajar carbide

Carbide a wasu lokuta, ban da abin da ake buƙata na tauri mai tsayi sosai da juriya, amma kuma yana buƙatar samun tasirin tasiri mai kyau. Taurin carbide na siminti na yau da kullun da ƙarfi, ƙarfi da juriya tsakanin ƙaƙƙarfan juna, biyun ba za su iya zama duka ba. Kayan aikin gradient na aiki yana warware matsalolin da ke sama a cikin carbide cimined, irin waɗannan allunan suna nuna rarrabawar gradient na Co a cikin tsarin, wato, mafi ƙarancin ƙirar gami yana ƙasa da ƙaramin abun cikin Co na alloy cobalt-poor Layer, Layer na tsakiya ya fi yawan abun ciki na Cobalt mai wadatar allo, kuma ainihin shine WC-Co-η microstructure mai matakai uku. Saboda babban abun ciki na WC a saman, yana da tsayin daka da kuma juriya mai kyau; tsakiyar Layer yana da babban abun ciki na Co kuma mai kyau tauri. Sabili da haka, rayuwar sabis ɗinsa shine sau 3 zuwa 5 na irin wannan nau'in simintin carbide na gargajiya, kuma ana iya daidaita abun da ke cikin kowane Layer bisa ga buƙatu.

Don taƙaitawa，ta hanyar rarrabuwa da gyaran gyare-gyare na simintin carbide, za mu iya ganin cewa sabon nau'in simintin carbide kayan aiki ya inganta sosai don kayan aikin gargajiya, a gefe guda, yin amfani da ƙananan ƙwayoyin cuta da ƙwararrun ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar cuta, tare da cikakkiyar haɗuwa da tauri da ƙarfi. Bugu da ƙari, sababbin matakai irin su matsa lamba na iya kara inganta ingancin ciki na ciminti carbide. A gefe guda, kayan aiki na duniya da aka samar da kayan aiki mai mahimmanci na kayan aiki na carbide yana sa saurin yankewa, yankan inganci da rayuwar kayan aiki sau da yawa fiye da na karfe mai sauri. Samar da waɗannan sabbin kayan aikin zai cika lahani na siminti carbide. Haɓaka kayan aikin kayan aikin carbide, don haka daga aikace-aikacensa na musamman a cikin aiwatar da haɓaka haɓaka fasahar kayan aikin kayan aikin zamani a cikin abubuwan da suka dace na kayan, kayan maye gurbin kari. Bari a yi amfani da shi zuwa mafi girma da fadi da kewayon yankan filayen. 

Da fatan wannan labarin zai iya taimaka muku don ƙarin fahimtar simintin carbide zuwa ɗan lokaci. Baya ga wannan, da fatan za a karanta rabin rabin na farko“Rabewa da Nazari akan Kayan Aikin Yankan Carbide da aka Yi”. Tuntube mu idan kuna da wata tambaya ko buƙatu game da samfuran carbide.