1. Usoro nchacha nke akụrụngwa
N'ihi na WBN, HBN, pyrophyllite, graphite, magnesium, ígwè na adịghị ọcha ndị ọzọ na-anọgide na CBN ntụ ntụ;Tụkwasị na nke ahụ, ya na ntụ ntụ na-ekekọta nwere adsorbed oxygen, vapor water, wdg, nke na-adịghị mma na-agbakọta.Ya mere, usoro nchacha nke akụrụngwa bụ otu n'ime njikọ dị mkpa iji hụ na arụmọrụ nke polycrystals synthetic.N'oge mmepe ahụ, anyị na-eji usoro ndị a na-eme ka CBN micropowder dị ọcha na ihe eji eme ihe: nke mbụ, na-emeso CBN emblem ntụ ntụ na NaOH na ihe dịka 300C iji wepụ pyrophyllite na HBN;Mgbe ahụ, sie perchloric acid iji wepụ graphite;N'ikpeazụ, jiri HCl sie na efere ọkụ eletrik iji wepụ ọla ahụ, ma saa ya ka ọ ghara ịnọpụ iche na mmiri distilled.Co, Ni, Al, wdg eji maka njikọkọ na-emeso ya site na mbelata hydrogen.Mgbe ahụ, a na-agwakọta CBN na ihe nkedo ahụ n'otu n'otu dịka akụkụ ụfọdụ ma tinye ya na graphite ebu, ma ziga ya n'ime ọkụ ọkụ na nrụgide na-erughị 1E2, na-ekpo ọkụ na 800 ~ 1000 Celsius C maka 1h iji wepụ unyi, oxygen adsorbed. na uzuoku mmiri n'elu ya, nke mere na ala ọka CBN dị ọcha nke ukwuu.
N'ihe gbasara nhọpụta na mgbakwunye nke ihe njikọ, ụdị ihe eji eme ihe ugbu a na CBN polycrystals nwere ike ịchịkọta ya n'ụdị atọ:
(1) Ihe nkedo igwe, dị ka Ti, Co, Ni.Cu, Cr, W na ọla ndị ọzọ ma ọ bụ alloys, dị mfe nro na okpomọkụ dị elu, na-emetụta ndụ ngwá ọrụ;
(2) Njikọ seramiiki, dị ka Al2O3, na-eguzogide okpomọkụ dị elu, ma ọ na-enwe mmetụta siri ike na-adịghị mma, na ngwá ọrụ ahụ dị mfe ịdaba na imebi;
(3) Njikọ Cermet, dị ka ngwọta siri ike nke carbides, nitrides, borides na Co, Ni, wdg, na-edozi adịghị ike nke ụdị njikọ abụọ dị n'elu.Ọnụ ego nke ihe nkedo ga-ezuru oke mana ọ bụghị oke.Nsonaazụ nnwale na-egosi na nguzogide na-eyi na ike na-ehulata nke polycrystal nwere njikọ chiri anya na nkezi ụzọ efu (ọkpụrụkpụ nke oyi akwa nke njikọta), mgbe nkezi ụzọ n'efu bụ 0.8 ~ 1.2 μ M, ụdị uwe polycrystalline bụ nke kachasị elu, yana Ọnụ ego nke eriri bụ 10% ~ 15% (oke oke).
2. Cubic boron nitride (CBN) embrayo nwere ike kewaa ụzọ abụọ
Otu bụ itinye ngwakọta nke CBN na onye na-ahụ maka njikọta na matrix carbide cemented n'ime iko molybdenum nke nnu carbon tube mkpuchi oyi akwa kewapụrụ.
Nke ọzọ bụ kpọmkwem sinter polycrystalline CBN cutter ozu na-enweghị alloy mkpụrụ: na-nagide isii n'akụkụ elu pịa, na-eji n'akụkụ-ekpo ọkụ mgbakọ mgbakọ.Gwakọta CBN ntụ ntụ ntụ ntụ, jide ya ruo oge ụfọdụ n'okpuru nrụgide na nkwụsi ike, wee jiri nwayọọ nwayọọ tinye ya n'ime ụlọ okpomọkụ wee jiri nwayọọ nwayọọ budata ya na nrụgide nkịtị.A na-eme embrayo mma polycrystalline CBN
3. Geometric parameters nke cubic boron nitride (CBN) ngwá ọrụ
Ndụ ọrụ nke ngwaọrụ cubic boron nitride (CBN) nwere njikọ chiri anya na mpaghara geometric ya.N'ihu na azụ azụ nke ọma nwere ike imeziwanye mmetụta nkwụsị nke ngwá ọrụ ahụ.Ike iwepụ mgbawa na ike ikpo ọkụ ọkụ.Ogo nke nkuku rake na-emetụta ozugbo ọnọdụ nchekasị nke mbelata na ọnọdụ nrụgide dị n'ime nke agụba.Iji zere oke nrụgide tensile kpatara site na mmetụta n'ibu na n'ọnụ ngwá ọrụ, a na-anabatakarị akụkụ ihu na-adịghị mma (- 5 ° ~ - 10 Celsius).N'otu oge ahụ, iji belata uwe nke azụ azụ, isi na ihe inyeaka bụ 6 Celsius, radius nke n'ọnụ ngwá ọrụ bụ 0.4 - 1.2 mm, na chamfer bụ ala dị nro.
4. Nyochaa ngwaọrụ cubic boron nitride (CBN).
Na mgbakwunye na ịnwale index hardness index, na-ehulata ike, tensile ike na ihe ndị ọzọ anụ ahụ, ọ dị mkpa ka iji a elu-ike eletrọn microscope iji lelee elu na onu ọgwụgwọ ziri ezi nke agụba ọ bụla.Nke na-esote bụ nyocha akụkụ, nha nha nha, uru M, nnabata geometric, adịghị ike nke ngwa, wee bukwasa na nkwakọba ihe.
Oge nzipu: Feb-23-2023