ozi

diamond sịntetik

A na-ejikarị diamond grit kọwaa obere ọka (≈0.00004 in.) nke diamond sịntetik ejiri dị ka isi akụrụngwa maka ndị na-egbutu PDC.N'ihe gbasara kemịkalụ na akụrụngwa, dayamọnd mmadụ mere bụ otu diamond eke eke.Ime grit diamond gụnyere usoro dị mfe nke kemịkalụ: carbon nkịtị na-ekpo ọkụ n'okpuru oke nrụgide na okpomọkụ.Otú ọ dị, na omume, ime diamond adịghị mfe.

Kristal diamond n'otu n'otu dị na grit diamond na-atụgharị n'ụzọ dị iche iche.Nke a na-eme ka ihe ahụ sie ike, dị nkọ, na, n'ihi ike siri ike nke diamond dị n'ime ya, na-eyi nke ukwuu.N'ezie, usoro a na-ahụ anya na diamond synthetic ejikọta ya na-arụ ọrụ nke ọma na shear karịa diamond eke, n'ihi na diamond eke bụ kristal cubic nke na-agbaji ngwa ngwa n'usoro ha, oke kristal.

Nri diamond esighi ike na oke okpomọkụ karịa diamond eke, agbanyeghị.N'ihi na ihe na-eme ka ọla dị n'ime grit ahụ nwere ọnụ ọgụgụ dị elu nke mgbasawanye ọkụ karịa diamond, mgbasawanye dị iche iche na-etinye eriri diamond na diamond n'okpuru shear na, ọ bụrụ na ibu dị elu, na-akpata ọdịda.Ọ bụrụ na agbụ daa, diamond na-efunahụ ngwa ngwa, ya mere PDC na-efunahụ ike na ịdị nkọ ya wee ghọọ adịghị arụ ọrụ.Iji gbochie ọdịda dị otú ahụ, ndị na-egbutu PDC ga-adị mma nke ọma n'oge a na-egwupụta ihe.

Tebụl diamond

Iji rụpụta tebụl diamond, grit diamond na-eji tungsten carbide na ihe nkedo ọla mee ka oyi akwa nwere diamond.Ha dị ka wafer n'ụdị, ma ekwesịrị ịme ha ka ọ bụrụ ihe siri ike dịka o kwere mee, n'ihi na olu diamond na-abawanye ndụ ndụ.Tebụl diamond kachasị mma bụ ≈2 ruo 4 mm, ọganihu teknụzụ ga-abawanye ọkpụrụkpụ tebụl diamond.Ngwakọta carbide Tungsten na-adịkarị ≈0.5 in. dị elu ma nwee otu akụkụ nke akụkụ na akụkụ dị ka tebụl diamond.Akụkụ abụọ ahụ, tebụl diamond na mkpụrụ, na-eme ka onye na-egbutu ihe (Fig 4).

Ịmepụta PDC ka ọ bụrụ ihe bara uru maka ndị na-egbutu ihe gụnyere ịtinye grit diamond, yana mkpụrụ ya, n'ime arịa nrụgide wee banye na oke okpomọkụ na nrụgide.

Enweghị ike ikwe ka ndị na-egbutu PDC gafere okpomọkụ nke 1,382°F [750°C].Okpomọkụ dị ukwuu na-emepụta iyi ngwa ngwa, n'ihi na mgbasawanye ọkụ dị iche n'etiti ihe nkedo na diamond na-agbaji kristal grit diamond na-eto eto na tebụl diamond.A na-etinyekwa ike n'etiti tebụl diamond na tungsten carbide substrate n'ihe egwu site na mgbasawanye ọkụ dị iche.