He aha ke ʻano o ka pahi ʻike PCD?

He aha ka ʻike maka PCD?

I ka ʻike ʻana ʻaʻole ʻike nui ka poʻe e pili ana i ka wehewehe ʻana o ka PCD saw blade, ʻoiai me nā loea e pili ana i ka PCD saw blade, ʻaʻole lawa ka wehewehe i hāʻawi ʻia e kekahi o lākou!

ʻO ka inoa Kina piha o ka PCD saw blade ʻo ia ka pōkole o "polycrystalline diamond saw blade", a ʻo PCD ka pōkole o PolyCrystalline Diamond (unuhi ʻia i ka ʻōlelo Kina he polycrystalline diamond), no laila ua kapa ʻia ʻo PCD saw blade i daimana. ʻIke i ka maka, akā, no ka mea, ua ʻike mua ʻia ka pahi ʻike daimana no ka ʻoki pōhaku ma mua o ka maka o ka PCD i ʻike ai, manaʻoʻiʻo ʻo Huangrui Tool he mea maʻalahi ka huikau ke kapa ʻana i ka pahi ʻike PCD e like me ka maka ʻike daimana. ʻAʻole maopopo ʻole ke kapa ʻia ʻo PCD diamond saw blade.
E like me kā mākou e ʻike ai, ʻo ka daimana ka mea paʻakikī loa i ke ʻano. He aniani hoʻokahi octahedral maʻamau i haku ʻia me nā mea kalapona i hana ʻia ma ka ʻaoʻao hohonu o ka honua ma lalo o ka hana o ke kaomi kiʻekiʻe a me ka wela kiʻekiʻe. ʻO ka ikaika, ua komo nā electrons valence a pau i ka hoʻokumu ʻana i nā paʻa covalent, ʻaʻohe electrons manuahi, no laila he nui loa ka paʻakikī o ke daimana, ʻo ka paʻakikī o ke daimana he 4 mau manawa o ka corundum a me 8 mau manawa o ka quartz!

Ua lōʻihi ka hiki i ka ʻenehana hou ke hana i nā kristal hoʻokahi daimana synthetic, a hoʻohana ʻo PCD i ka cobalt a me nā metala ʻē aʻe i mea hoʻopaʻa i ka polycrystallize synthetic diamond single crystal powders i nā polycrystals daimana ma lalo o nā kūlana kikoʻī. ʻO ka paʻakikī o kēia daimana polycrystalline (ʻo ia hoʻi PCD) ʻOiai ʻaʻole ia e like me ka paʻakikī e like me ke daimana aniani hoʻokahi, ʻoi aku ka paʻakikī e like me 8000HV, ʻo ia ka 80 ~ 120 mau manawa o ka carbide cemented! Eia kekahi, ʻo ka thermal conductivity series o PCD he 700W/MK, ʻo ia ka 2 ~ 9 mau manawa o ka carbide cemented, a ʻoi aku ka kiʻekiʻe ma mua o ka PCBN a me ke keleawe. No laila, me ka hoʻohana ʻana i nā mea PCB e like me ke poʻo ʻike maka, wikiwiki loa ka wikiwiki o ka hoʻololi ʻana i ka wela i ka wā e ʻoki ai. Eia kekahi, ʻo ka coefficient o ka hoʻonui wela o ka mea PCD he hoʻokahi wale nō hapalima o ka carbide cemented, a ʻo ka coefficient o friction he hapakolu wale nō o ka carbide cemented. Hoʻoholo kēia mau waiwai i ka hoʻohana ʻana i ka ʻike maka e hoʻohana ana i ka mea PCD e like me ke poʻo ʻokiʻoki ua like ia me ke kino ʻili. Ma lalo o kekahi mau kūlana, ʻaʻole wale ke ola lawelawe o ka ʻili maka he 30 mau manawa ke kiʻekiʻe ma mua o ka carbide saw blade, akā ʻoi aku ka maikaʻi o ka ʻoki ʻoki. Eia kekahi, liʻiliʻi ka pilina ma waena o nā mea PCD a me nā metala non-ferrous a me nā mea metala ʻole. I ka wā e ʻoki ai i nā metala non-ferrous a i ʻole nā ​​mea metala ʻole, ʻoi aku ka liʻiliʻi o ke poʻo ʻoki PCD ma ka lau ʻike e hoʻopaʻa i ka ʻōpala ma mua o ke poʻo ʻoki carbide. ʻO ka mea hope loa, aia kekahi pono ʻē aʻe: ʻo ka mea PCD he waikawa ikaika a me ke kūpaʻa kūpaʻa alkali, a he mea maikaʻi hoʻi ia i ka paʻa ʻana o ka PCD saw blades.

E hoʻohana ka PCD i ka carbide i hoʻopaʻa ʻia e like me ka matrix no ka PCD mea ʻoi aku ma mua o 1mm, e hana i kahi hui ma o ka sintering a i ʻole nā ​​​​kaʻina hana ʻē aʻe, a hope loa e hoʻokomo i ke kino pā kila kila o ka maka ʻike, i mea e pani ai. ka mea paakiki me ke poo oki PCD. ʻO ia ka ʻoki ʻoki o ka ʻili maka, kahi e hoʻomaikaʻi nui ai i ke ola lawelawe o ka ʻili a me ka paʻa o ka maikaʻi ʻoki.

I kēia manawa, ʻoi aku ka nui o nā mea hoʻohana ʻike maka e koho e hoʻohana i ka PCD daimana saw blades me ka lōʻihi o ka lawelawe ʻana i ke ola, ka mea i hoʻohana nui ʻia i loko o ka ʻoihana hana hale, ʻoihana hana metala non-ferrous i paʻakikī e ʻoki, a me ka puka aniani a me ka puka aniani. nā mea hana e pani i nā pahi carbide kumu. ʻAʻole hiki ke ʻoki mau ʻia ka ʻili ʻili o ke poʻo no ka manawa lōʻihi, akā ʻaʻole pono e hoʻololi pinepine i ka ʻili. ʻO ka lōʻihi, piha, hoʻemi ʻo ia i ka nui o ka ʻoki ʻana i nā kumukūʻai i hoʻohālikelike ʻia me ka hoʻohana ʻana i nā lau carbide saw!