ʻO nā mea hana ʻokiʻoki PCD he paʻakikī kiʻekiʻe, ka ikaika compressive kiʻekiʻe, ka conductivity thermal maikaʻi a me ke kūpaʻa ʻana, a hiki ke loaʻa i ka pololei machining kiʻekiʻe a me ka pono i ka mīkini kiʻekiʻe.
Hoʻoholo ʻia nā hiʻohiʻona ma luna e ke kūlana aniani o ke daimana.I loko o ke aniani daimana, hana nā electrons valence ʻehā o nā ʻātoma kalapona i nā mea paʻa e like me ke ʻano tetrahedral, a ʻo kēlā me kēia kalapona ʻātoma i hoʻopaʻa covalent me ʻehā mau ʻātoma pili, pēlā e hana ai i kahi ʻano daimana.He ikaika paʻa a me ke kuhikuhi ʻana o kēia hale, no laila e paʻakikī loa ke daimana.No ka mea, ʻo ke ʻano o ke daimana polycrystalline (PCD) he kino sintered o ke daimana maikaʻi me nā ʻano ʻokoʻa, ʻoi aku ka haʻahaʻa o kona paʻakikī a me ke kūpaʻa ʻana ma mua o ka daimana kristal hoʻokahi me ka hoʻohui ʻana o ka mea hoʻopili.Eia nō naʻe, he isotropic ke kino sintered PCD, no laila, ʻaʻole maʻalahi ka haki ʻana ma kahi mokulele cleavage hoʻokahi.
2. Nāʻokoʻa i nā hōʻailona hana
Hiki i ka paʻakikī o PCD ke hiki i 8000HV, 80 ~ 120 mau manawa o ka carbide cemented;I ka pōkole, he lōʻihi ke ola o ka PCD a hoʻomaikaʻi i ka hana hana.
ʻO ka thermal conductivity o PCD he 700W / mK, 1.5 ~ 9 mau manawa o ka carbide cemented, a ʻoi aku ka kiʻekiʻe ma mua o ka PCBN a me ke keleawe, no laila ua wikiwiki ka hoʻoili wela o nā mea hana PCD;
He 0.1 ~ 0.3 wale nō ka nui o ka friction coefficient o ka PCD (ʻo 0.4 ~ 1 ke kumu hoʻohālikelike o ka carbide cemented), no laila hiki i nā mea hana PCD ke hoʻemi nui i ka ikaika ʻoki;
He 0.9 × 10^-6～1.18 × 10 ^ – 6 wale nō ka helu o ka hoʻonui wela o ka PCD, ʻo ia wale nō ka 1/5 o ka carbide cemented, no laila he liʻiliʻi ka deformation thermal o ka mea hana PCD a kiʻekiʻe ka pololei o ka mīkini;
ʻO ka pilina ma waena o ka mea hana PCD a me nā mea metala nonferrous a me nā mea non-metallic he mea liʻiliʻi loa, a ʻaʻole maʻalahi nā chips e hoʻopaʻa ʻia ma ka ʻaoʻao o ka mea hana e hana ai i kahi waihona chip i ka wā e hana ai.
Ka manawa hoʻouna: Feb-23-2023