Mmepụta PDC Bit Cutter

A na-akpọ onye na-egbu ihe nkedo PDC Polycrystalline Diamond Compact Cutter.Ihe sịntetik a bụ 90-95% diamond dị ọcha ma na-emepụta ya na kọmpat nke edobere n'ime ahụ nke bit. Okpomọkụ dị elu nke sitere na ụdị ibe n'ibe ndị a mere ka diamond polycrystalline gbawasịa na nke a butere mmepe nke Thermally Stable Polycrystalline Diamond - TSP Diamond.

PCD (Polycrystalline Diamond) na-etolite n'ụdị okpomọkụ dị elu nke okpukpu abụọ, usoro nrụgide dị elu. Nzọụkwụ mbụ n'ime usoro a bụ imepụta kristal diamond artificial site n'ikpughe graphite, na ọnụnọ nke Cobalt, nickel, na ígwè ma ọ bụ manganese catalyst / ngwọta, na nrụgide karịa 600,000 psi. N'ọnọdụ ndị a, kristal diamond na-etolite ngwa ngwa. Otú ọ dị, n'oge usoro nke ịtụgharị graphite ka ọ bụrụ diamond, e nwere ụda olu, nke na-eme ka ihe mgbaze / mgbaze na-asọba n'etiti kristal na-emepụta, na-egbochi njikọ intercrystalline na ya mere ọ bụ nanị diamond crystal ntụ ntụ na-emepụta site na akụkụ a nke usoro ahụ.

N'ọkwa nke abụọ nke usoro a, a na-emepụta PCD oghere ma ọ bụ 'cutter' site na ọrụ ntinye mmiri mmiri. A na-agwakọta ntụ ntụ diamond nke e guzobere na ọkwa mbụ nke usoro ahụ na ihe na-akpata / ihe nkedo ma kpughee ya na okpomọkụ karịa 1400 ℃ na nrụgide nke 750,000 psi. Isi usoro maka ịmegharị ihe bụ igbari kristal diamond n'akụkụ ha, nkuku, na ebe nrụgide dị elu kpatara site na kọntaktị ọnụ ma ọ bụ ọnụ. Nke a na-esochi uto epitaxial nke diamond n'ihu yana na saịtị nke akụkụ kọntaktị dị ala n'etiti kristal. Usoro mmụgharị a na-etolite ezigbo njikọ diamond na diamond na-ewepu ihe nkedo mmiri na mpaghara njikọ. Onye na-ekekọta ihe na-emepụta netwọk nke pores ma ọ bụ na-aga n'ihu, na-ejikọta ya na netwọk na-aga n'ihu nke diamond. Ọnụ ọgụgụ diamond a na-ahụkarị na PCD bụ 90-97 vol.

Ọ bụrụ na mmadụ chọrọ kọmpat composite nke PCD jikọtara kemịkalụ na mkpụrụ osisi tungsten carbide, ụfọdụ ma ọ bụ ihe niile maka PCD nwere ike nweta site na mkpụrụ osisi tungsten carbide dị n'akụkụ site na agbaze ma wepụ ihe nkedo cobalt na tungsten carbide.

Ọ bụrụ na ị nwere mmasị na ndị na-egbutu PDC ma chọọ ozi ndị ọzọ na nkọwapụta, 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 ahụ.