Kwambara ubushyuhe hamwe no gukuraho cobalt ya PDC

I. Kwambara ubushyuhe no gukuraho cobalt ya PDC

Muburyo bwo gucumura umuvuduko mwinshi wa PDC, cobalt ikora nk'umusemburo wo guteza imbere guhuza diyama na diyama, kandi bigatuma materix ya diyama na matrike ya karubide ya tungsten ihinduka byose, bigatuma PDC ikata amenyo akwiranye no gucukura peteroli ya peteroli hamwe no gukomera cyane,

Diyama irwanya ubushyuhe ni ntarengwa. Munsi yumuvuduko wikirere, hejuru ya diyama irashobora guhinduka mubushyuhe bugera kuri 900 ℃ cyangwa hejuru yayo. Mugihe cyo gukoresha, PDC gakondo ikunda kugabanuka nka 750 ℃. Iyo gucukura unyuze mu bitare bikomeye kandi byangiza, PDC irashobora kugera kuri ubu bushyuhe byoroshye kubera ubushyuhe bwo guterana amagambo, kandi ubushyuhe bwako kanya (ni ukuvuga ubushyuhe bwaho kurwego rwa microscopique) burashobora kuba hejuru cyane, burenze kure gushonga kwa cobalt (1495 ° C).

Ugereranije na diyama nziza, bitewe na cobalt, diyama ihinduka grafite mubushyuhe buke. Nkigisubizo, kwambara kuri diyama biterwa no gushushanya biva mubushyuhe bwo guterana. Byongeye kandi, coefficente yo kwagura ubushyuhe bwa cobalt irarenze cyane irya diyama, bityo mugihe cyo gushyushya, guhuza ibinyampeke bya diyama birashobora guhungabana no kwaguka kwa cobalt.

Mu 1983, abashakashatsi babiri bakoze ubuvuzi bwo kuvanaho diyama hejuru yuburinganire bwa PDC bwa diyama, byongera cyane imikorere y amenyo ya PDC. Ariko, iki gihangano nticyakiriwe neza. Nyuma ya 2000 ni bwo, hamwe no gusobanukirwa byimazeyo ibice bya diyama ya PDC, abatanga imyitozo batangiye gukoresha ubwo buhanga mu menyo ya PDC yakoreshejwe mu gucukura amabuye. Amenyo avuwe nubu buryo arakwiriye kuboneka cyane kandi yambaye imyenda yubushyuhe bukomeye kandi bakunze kwita amenyo ya "de-cobalted".

Ibyo bita "de-cobalt" bikozwe muburyo gakondo bwo gukora PDC, hanyuma ubuso bwurwego rwa diyama rwinjizwa muri acide ikomeye kugirango ikureho cobalt ikoresheje inzira yo gutema aside. Ubujyakuzimu bwo gukuraho cobalt bushobora kugera kuri microne 200.

Ikizamini cyo kwambara kiremereye cyakozwe ku menyo abiri ya PDC (imwe muri yo yari yaravuwe cobalt ikuraho hejuru ya diyama). Nyuma yo guca 5000m ya granite, byagaragaye ko igipimo cyo kwambara cya PDC kidakuweho cobalt cyatangiye kwiyongera cyane. Ibinyuranye, PDC yakuweho cobalt yagumanye umuvuduko muke wo guca mugihe uca hafi 15000m yigitare.

2. Uburyo bwo kumenya PDC

Hariho ubwoko bubiri bwuburyo bwo kumenya amenyo ya PDC, aribyo kwipimisha kwangiza no gupima kutangiza.

1. Ikizamini cyangiza

Ibi bizamini bigamije kwigana imiterere yimanuka nkibishoboka kugirango hasuzumwe imikorere yo guca amenyo mubihe nkibi. Uburyo bubiri bwingenzi bwo kugerageza kwangiza ni kwambara ibizamini byo kurwanya no kugerageza ingaruka.

(1) Kwambara ikizamini cyo guhangana

Ubwoko butatu bwibikoresho bikoreshwa mugukora ibizamini byo kurwanya PDC:

A. Umusarani uhagaze (VTL)

Mugihe cyikizamini, banza ukosore biti ya PDC kuri lathe ya VTL hanyuma ushireho urutare (ubusanzwe granite) kuruhande rwa PDC. Noneho uzenguruke urutare icyitegererezo kizengurutse umusarani ku muvuduko runaka. PDC biti ikata murugero rwurutare hamwe nubujyakuzimu bwihariye. Iyo ukoresheje granite mugupima, ubujyakuzimu bwo gukata buri munsi ya mm 1. Iki kizamini gishobora kuba cyumye cyangwa gitose. Muri "kwipimisha VTL yumye," mugihe PDC bitemye mu rutare, nta gukonjesha gukoreshwa; ubushyuhe bwose bwo guterana bwinjiye muri PDC, byihutisha gahunda yo gushushanya diyama. Ubu buryo bwo kwipimisha butanga ibisubizo byiza mugihe cyo gusuzuma bits ya PDC mubihe bisaba umuvuduko mwinshi wo gucukura cyangwa umuvuduko mwinshi.

"Ikizamini cya VTL gitose" cyerekana ubuzima bwa PDC mugihe cy'ubushyuhe buciriritse ukonjesha amenyo ya PDC n'amazi cyangwa umwuka mugihe cyo kwipimisha. Kubwibyo, isoko nyamukuru yo kwambara yiki kizamini ni ugusya urutare aho kuba ubushyuhe.

B, umusarani utambitse

Iki kizamini nacyo gikorwa hamwe na granite, kandi ihame ryikizamini ahanini ni kimwe na VTL. Igihe cyo kwipimisha ni iminota mike, kandi ihungabana ryumuriro hagati ya granite n amenyo ya PDC ni bike cyane.

Ibipimo bya granite ikoreshwa nabatanga ibikoresho bya PDC bizatandukana. Kurugero, ibipimo byikizamini byakoreshejwe na Synthetic Corporation na DI Company muri Reta zunzubumwe zamerika ntabwo bisa neza, ariko bakoresha ibikoresho bimwe bya granite mugupimisha kwabo, ikariso kugeza murwego rwo hagati ya polycrystalline yaka urutare rufite ububobere buke cyane nimbaraga zo kwikuramo 190MPa.

C. Igipimo cyo gupima igipimo

Mugihe cyagenwe, igipimo cya diyama ya PDC gikoreshwa mugukata silicon karbide yo gusya uruziga, kandi igipimo cyikigereranyo cyo kwambara cyo gusya hamwe nigipimo cyo kwambara cya PDC gifatwa nkigipimo cyo kwambara cya PDC, cyitwa kwambara.

(2) Ikizamini cyo kurwanya ingaruka

Uburyo bwo gupima ingaruka burimo gushiraho amenyo ya PDC kumpande ya dogere 15-25 hanyuma ukamanura ikintu kuva murwego runaka kugirango ukubite diyama kumenyo ya PDC uhagaritse. Uburemere nuburebure bwikintu kigwa byerekana ingaruka zingufu zatewe n amenyo yikizamini, zishobora kwiyongera kugeza kuri joules 100. Buri menyo irashobora gukubitwa inshuro 3-7 kugeza igihe idashobora kugeragezwa neza. Mubisanzwe, byibura ingero 10 za buri bwoko bwinyo zipimwa kuri buri rwego rwingufu. Kubera ko hari intera irwanya amenyo kugirango igire ingaruka, ibisubizo byikizamini kuri buri rwego rwingufu ni agace kagereranijwe ka diyama nyuma yo kugira ingaruka kuri buri menyo.

2. Ikizamini kidasenya

Uburyo bukoreshwa cyane muburyo bwo gupima butangiza (usibye kugenzura amashusho na microscopique) ni ultrasonic scanning (Cscan).

C tekinoroji yo gusikana irashobora kumenya inenge nto no kumenya ahantu nubunini bwinenge. Mugihe ukora iki kizamini, banza ushire iryinyo rya PDC mumazi wamazi, hanyuma usuzume hamwe na ultrasonic probe;

Iyi ngingo yasubiwemo kuva “Umuyoboro mpuzamahanga wo gukora ibyuma“