Ụdị Carbide Cemented ọhụrụ

1. Mkpụrụ ọka dị mma na carbide ọka mara mma

Mgbe nchacha ọka nke carbide cemented, nha nke cemented carbide na-adị ntakịrị, a na-ekesa akụkụ nke njikọ nke ọma n'akụkụ akụkụ carbide cemented, nke nwere ike imeziwanye ike ma na-eyi nguzogide nke carbide cemented. Mana ike na-ehulata na-ebelata. Enwere ike imeziwanye ike mgbada site na ịba ụba ọdịnaya nke cobalt na ihe nkedo nke ọma. Nha ọka: alloys ngwaọrụ ọkwa nkịtị YT15, YG6, wdg bụ ọka ọkara, nkezi ọka bụ 2 ~ 3μm；tNkezi ọka ya nke ezigbo ọka alloy bụ 1.5 ~ 2μm, na nke micron grain carbide bụ 1.0 ~ 1.3μm. Submicrograin carbide bụ 0.6 ~ 0.9μm；tkristal kristal dị mma bụ 0.4 ~ 0.5μm; Nano-usoro microcrystalline carbide bụ 0.1 ~ 0.3μm; Ngwá ọrụ ịkpụ carbide nke China eruola ọkwa ọka dị mma nasub-mmaọka.

2.TiC base carbide

TiC dị ka isi ahụ, na-aza ihe karịrị 60% ruo 80%, yana Ni ~ Mo dị ka onye na-ekekọta, ma gbakwunye obere carbide ndị ọzọ nke alloy, nwere enweghị WC ma ọ bụ obere. E jiri ya tụnyere WC base alloy, TiC nwere ike kachasị elu na carbide, yabụ ike ike alloy dị elu dị ka HRA90 ~ 94, ọ nwekwara ike iyi akwa mkpuchi mkpuchi mkpuchi mkpuchi mkpuchi mkpuchi mkpuchi mkpuchi mkpuchi mkpuchi, nkwụsi ike oxidation na nkwụsi ike kemịkalụ, yana mmekọrịta ya na ihe eji arụ ọrụ dị ntakịrị, ihe na-akpata esemokwu dị ntakịrị, nkwụsi ike na-adịgide adịgide siri ike, ịdịte aka ngwá ọrụ dị ọtụtụ ugboro karịa WC, ya mere enwere ike ịhazi ya ígwè na nkedo ígwè. Tụnyere YT30, ike nke YN10 nso, weldability na sharpness dị mma, na ọ nwere ike ihu ọma dochie YT30. Mana ike na-ehulata erughi WC, nke a na-ejikarị emecha na ọkara imecha. N'ihi nguzogide ya na-adịghị mma na nrụrụ plastik na ọdịda ọdịda, ọ dịghị mma maka ịcha arọ na igbutu oge.

3.Carbide cemented nwere ihe ndị dị ụkọ n'ụwa agbakwunyere

Carbide na-adịghị ahụkebe bụ ihe dị iche iche nke cemented carbide ngwá ọrụ, na-agbakwunye obere ihe nke ụwa na-adịghị ahụkebe (nọmba atomic na tebụl oge nke ihe ndị na-emepụta ihe bụ 57-71 (site na La ruo Lu), gbakwunyere 21 na 39 (Sc na Y) ọcha, ngụkọta nke 17 ọcha), ihe ndị dị ụkọ n'ụwa dị na (W, Ti) C ma ọ bụ (W, Ti, Ta, Nb) C siri ike ngwọta. Ọ nwere ike iwusi usoro siri ike ike, gbochie uto na-ezighi ezi nke ọka WC ma mee ka ha dịkwuo n'otu, na-ebelata nha ọka. A na-agbazekwa obere ihe nke ụwa na-adịghị ahụkebe na ngalaba njikọ Co, nke na-ewusi usoro njikọ ahụ ike ma mee ka usoro ahụ sie ike karị. A na-eme ka ihe ndị na-adịghị ahụkebe na-abawanye na interface nke WC/Co na n'etiti interface nke (W, Ti) C, (W, Ti) C, wdg, na-ejikọta ya na adịghị ọcha S, O, wdg, iji mepụta ogige dị otú ahụ. dị ka RE2O2S, nke na-eme ka ịdị ọcha nke interface dịkwuo mma ma na-eme ka wettability nke usoro siri ike na nke jikọtara ọnụ. N'ihi nke a, mmetụta siri ike, ike na-ehulata na nguzogide mmetụta nke carbide na-adịghị ahụkebe na-emeziwanye nke ọma. Okpomọkụ ime ụlọ ya na oke okpomọkụ siri ike, na-eyi nguzogide na ike nke mgbasa ozi na mgbochi oxidation n'elu ngwá ọrụ ahụ ka emewokwa ka mma. N'oge ịcha, ihe omume bara ụba nke cobalt nke elu oyi akwa nke cemented carbide agụba na-adịghị ahụkebe nwere ike belata ihe esemokwu dị n'etiti mgbawa, workpiece na ngwá ọrụ, ma belata ike ịkpụ. Ya mere, a na-emeziwanye ihe ndị na-emepụta ihe na ihe ịkpụcha nke ọma. China bara ụba n'ihe onwunwe dị ụkọ n'ụwa, nyocha na mmepe nke carbide cemented na-adịghị ahụkebe dị n'ihu mba ndị ọzọ. E mepụtala alloys P, M, K iji gbakwunye akara ule ụwa.

4.A na-ekpuchi ya na carbide cimented

Due na ike siri ike ma na-eyi nguzogide nke carbide cimented dị mma, ịdị ike adịghị mma, site na ntinye mmiri nke kemịkalụ (CVD) na ụzọ ndị ọzọ, n'elu carbide cemented kpuchie ya na oyi akwa (5 ~ 12μm) nke ịdị mma siri ike, akwa mkpuchi mkpuchi. nke ihe (TiC, TiN, Al2O3), nhazi nke carbide cemented kpuchie, nke mere na ọ nwere ma elu ike na elu na-eyi nguzogide elu, na matriks siri ike; Ya mere, ọ nwere ike imeziwanye ndụ ngwá ọrụ na nhazi nhazi, belata ike ịkpụ na ịcha ọkụ, melite ogo nke igwe a na-emepụta, ma na-eme ka ngwa ngwa dịkwuo ogologo oge n'otu ngwa ngwa. N'ime afọ 20 gara aga, mma carbide mkpuchi etolitela nke ukwuu, wee nweta ihe karịrị 50% ruo 60% nkeindex-nwere ikengwá ọrụ na elu ulo oru mba. Akara mkpuchi mkpuchi kachasị mma maka ntụgharị na-aga n'ihu ma na-eji ya emecha, ọkara imecha na ibu dị arọ roughing nke dị iche iche carbon structural steels, alloy structural steels (gụnyere normalizing na tempering), mfe ịkpụ nchara, ngwá ọrụ ígwè, martensitic igwe anaghị agba nchara na isi awọ nkedo. ígwè.

5. Carbide nwere ogo

Carbide n'ọnọdụ ụfọdụ, na mgbakwunye na chọrọ nke ukwuu elu elu hardness na eyi iguzogide, ma mkpa inwe mmetụta dị mma siri ike. Nkịtị cimented carbide siri ike na ike, ike na eyi iguzogide n'etiti ibe ha mgbochi, abụọ enweghị ike ịbụ ma. Ngwa gradient na-arụ ọrụ na-edozi nsogbu ndị dị n'elu dị na carbide cimented, alloys ndị dị otú ahụ na-egosi nkesa gradient nke Co na nhazi ahụ, ya bụ, oyi akwa kachasị elu nke alloy dị ala karịa ọdịnaya Co nke alloy cobalt-ogbenye oyi akwa, na etiti oyi akwa dị elu karịa ọdịnaya Co a na-akpọ aha nke alloy cobalt-rich oyi akwa, na isi bụ WC-Co-η microstructure nkeji atọ. N'ihi ọdịnaya WC dị elu n'elu, ọ nwere nnukwu ike ike na ezigbo mgbochi iyi; oyi akwa nke etiti nwere ọdịnaya Co dị elu na ịdị mma siri ike. Ya mere, ndụ ọrụ ya bụ 3 ruo 5 ugboro nke omenala cimented carbide, na ihe mejupụtara nke ọ bụla oyi akwa nwere ike gbanwee dị ka mkpa.

Na mkpokọta，site na nhazi na nhazi nke carbide cimented, anyị nwere ike ịhụ na a na-emeziwanye ụdị ọhụrụ nke cemented carbide ngwá ọrụ nke ọma maka ngwá ọrụ omenala, n'otu aka ahụ, iji ihe ndị dị mma na ihe ndị na-emepụta ihe na-emepụta ihe dị mma nke carbide cimented, na. ngwakọta zuru oke nke ike na ike. Tụkwasị na nke ahụ, usoro ọhụrụ dị ka nrụgide nrụgide nwere ike imeziwanye àgwà nke carbide cimented dị n'ime. N'aka nke ọzọ, ngwá ọrụ zuru ụwa ọnụ nke e mepụtara site na ngwá ọrụ carbide nke na-arụ ọrụ dị elu na-eme ka ọkpụkpụ na-agba ọsọ, nkwụsị nke ọma na ndụ ngwá ọrụ ọtụtụ ugboro karịa nke ígwè dị elu. Mmepụta nke ngwaọrụ ọhụrụ a ga-ejupụta n'ụzọ dị ukwuu ntụpọ nke carbide cimented. Mmepe nke ngwá ọrụ carbide, nke mere na ọ si na ngwa ya pụrụ iche na-arụ ọrụ nke mgbasawanye nke mmepe nke nkà na ụzụ ngwá ọrụ nke oge a na uru ndị na-akwado ihe, ihe iji dochie ihe mgbakwunye. Ka a na-etinye ya n'ọrụ n'ogo dị elu na nke sara mbara nke igbutu ubi. 

Echere na isiokwu a nwere ike inyere gị aka ịghọta nke ọma carbide simenti ruo n'ókè ụfọdụ. Ewezuga nke a, biko gụọ ọkara nke mbụ nke“Nhazi na ọmụmụ ihe na Ngwa ịcha Carbide nke Cemented”. Kpọtụrụ anyị ma ọ bụrụ na ị nwere ajụjụ ọ bụla ma ọ bụ ihe achọrọ gbasara ngwaahịa carbide.