Njirimara nke ngwa PCD na ngwá ọrụ nchara tungsten

Ihe eji egbutu PCD nwere ike siri ike, ike mkpakọ dị elu, ezigbo conductivity thermal na eyi nguzogide, ma nwee ike nweta oke machining ziri ezi na arụmọrụ dị elu n'ịrụ ngwa ngwa.

A na-ekpebi njirimara ndị dị n'elu site na steeti kristal nke diamond.N'ime kristal diamond, elektrọn valence anọ nke carbon carbon na-etolite agbụ dịka usoro tetrahedral si dị, na carbon carbon nke ọ bụla na-etolite njikọ covalent na atọm anọ dị n'akụkụ, si otú a na-etolite usoro diamond.Ihe owuwu a nwere ike ijikọ na ntụzịaka siri ike, yabụ na-eme ka diamond ahụ sie ike nke ukwuu.N'ihi na ihe owuwu nke diamond polycrystalline (PCD) bụ ahụ siri ike nke diamond mara mma nke nwere ụzọ dị iche iche, isi ike ya na nguzogide ya ka dị ala karịa nke otu diamond kristal n'agbanyeghị na mgbakwunye na mgbakwunye.Otú ọ dị, PCD sintered ahụ bụ isotropic, n'ihi ya, ọ dịghị mfe ịgbawa n'otu ụgbọ elu cleavage.

2. Ọdịiche dị na ngosipụta arụmọrụ

Isi ike nke PCD nwere ike iru 8000HV, 80 ~ 120 ugboro nke carbide cimented;Na nkenke, PCD nwere ogologo ndụ ọrụ ma na-eme ka nrụpụta mmepụta ihe dịkwuo mma.

Thermal conductivity nke PCD bụ 700W / mK, 1.5 ~ 9 ugboro nke cemented carbide, na ọbụna elu karịa nke PCBN na ọla kọpa, otú okpomọkụ nyefe nke PCD ngwaọrụ ngwa ngwa;

Ọnụọgụ esemokwu nke PCD bụ naanị 0.1 ~ 0.3 (ọnụọgụ esemokwu nke cemented carbide bụ 0.4 ~ 1), yabụ ngwaọrụ PCD nwere ike belata ike ịkpụ;

Ọnụ ọgụgụ nke mgbasawanye okpomọkụ nke PCD bụ naanị 0.9 × 10 ^ -6～1.18 × 10 ^ - 6, nke bụ naanị 1/5 nke carbide cemented, ya mere nrụrụ okpomọkụ nke PCD ngwá ọrụ dị ntakịrị na nhazi nhazi dị elu;

Mmekọrịta dị n'etiti ngwá ọrụ PCD na metal nonferrous na ihe ndị na-abụghị ọla dị ntakịrị, na ibe adịghị mfe ijikọ na ọnụ ngwá ọrụ iji mepụta nkwụnye ego n'oge nhazi.