Kedu ihe bụ PDC bit Cutter?

Diamond bụ ihe kacha sie ike mara. Isi ike a na-enye ya ihe ndị dị elu maka ịkpụ ihe ọ bụla ọzọ. PDC (Polycrystalline diamond compact) dị ezigbo mkpa maka ịkụ ala n'ihi na ọ na-achịkọta diamọnd ndị dị ntakịrị, ndị dị ọnụ ala, ndị mmadụ mere n'ime nnukwu nnukwu kristal na-enweghị usoro nke nwere ike ịmepụta ka ọ bụrụ ọdịdị bara uru nke a na-akpọ tebụl diamond. Tebụl diamond bụ akụkụ nke onye na-egbutu ihe na-akpọtụrụ ihe nhazi. E wezụga isi ike ha, tebụl diamond PDC nwere njirimara dị mkpa maka ndị na-egbutu-bit: Ha na-ejikọta nke ọma na ihe tungsten carbide nke nwere ike ịgbanye (ejikọta) na ozu. Ola diamond, n'onwe ha, agaghị ejikọta ọnụ, enweghịkwa ike ijikọ ha site na brazing.

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-eguzogide oke iyi. N'ezie, usoro a na-ahụ anya na diamond sịntetik nke jikọtara 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 siri ike dịka o kwere mee n'ihi na olu diamond na-abawanye ndụ ndụ. Tebụl diamond kacha 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

PDC cutter ewu.

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 toro na tebụl diamond. A na-etinyekwa ike n'etiti tebụl diamond na tungsten carbide substrate n'ihe egwu site na mgbasawanye ọkụ dị iche.

Ọ bụrụ na ị nwere mmasị na ngwaahịa tungsten carbide ma chọọ ozi ndị ọzọ na nkọwa, ị nwere ike ịkpọtụrụ anyị site na ekwentị ma ọ bụ mail n'aka ekpe, ma ọ bụ zipu ozi US na ala nke ibe.