ʻO nā mea waiwai nui ʻelua o nā mea ʻoki PDC

ʻO ka mea ʻoki PDC kahi ʻano mea paʻakikī loa e hoʻopili i ka daimana polycrystalline me ka substrate tungsten carbide i ka wela kiʻekiʻe a me ke kaomi.

Ua hana mua ʻia ʻo PDC Cutter e General Electric (GE) i ka makahiki 1971. Ua hana ʻia nā PDC Cutters mua no ka ʻoihana aila a me ke kinoea i ka makahiki 1973 a ma hope o 3 mau makahiki o ka hoʻokolohua a me ka hoʻāʻo ʻana, ua hōʻoia ʻia lākou ʻoi aku ka maikaʻi ma mua o nā hana ʻoki o ka carbide. nā pihi pihi no laila ua hoʻolauna ʻia lākou ma ke kālepa i ka makahiki 1976.

Hana ʻia nā mea ʻoki PDC mai ka substrate carbide tungsten a me ka grit daimana synthetic. Ke ulu pū nei ke daimana a me ka carbide substrate ma o nā mea paʻa kemika ma lalo o nā kūlana kiʻekiʻe a me ke kaomi kiʻekiʻe.

ʻO nā mea koʻikoʻi o nā mea ʻoki PDC he daimana grit a me ka substrate carbide.

1. Nani daimana

ʻO Diamond grit ka mea nui no nā mea ʻoki PDC. Ma ke ʻano o nā kemika a me nā waiwai, ua like ke daimana i hana ʻia me ke daimana maoli. ʻO ka hana ʻana i ka ʻili daimana he hana maʻalahi kemika: hoʻomehana ʻia ke kalapona maʻamau ma lalo o ke kaomi kiʻekiʻe loa a me ka mahana. I ka hoʻomaʻamaʻa naʻe, ʻaʻole maʻalahi ka hana ʻana i kahi daimana.

ʻAʻole paʻa ka paʻa o ka daimana ma nā wela kiʻekiʻe ma mua o ke daimana maoli. No ka mea, ʻoi aku ka kiʻekiʻe o ka hoʻonui wela ma mua o ke daimana, hoʻonui ʻokoʻa ka hoʻonui ʻana i nā kaula daimana-i-diamond ma lalo o ke ʻoki ʻana, a inā he kiʻekiʻe nā haʻawe, hoʻopau ʻia nā mea paʻa. Inā hāʻule nā ​​paʻa, nalowale koke nā daimana, no laila nalowale ka PDC i kona paʻakikī a me ka ʻoi a lilo i mea ʻole. No ka pale ʻana i kēlā hemahema, pono e hoʻomaʻalili maikaʻi ʻia nā mea ʻoki PDC i ka wā wili.

2. ʻO ka pahu karbide

Hana ʻia ka substrate carbide me ka tungsten carbide. ʻO Tungsten carbide (kemimi kumu: WC) he pūhui kemika i loaʻa nā ʻātoma tungsten a me nā kalapona. ʻO ke ʻano maʻamau o ka tungsten carbide he pauka hina hina, akā hiki ke paʻi ʻia a hana ʻia i loko o nā ʻano ma o ke kaomi ʻana a me ka sintering.

Hoʻohana nui ʻia ʻo Tungsten carbide i ka ʻeli ʻana i nā ʻāpana hammer rock drill bits, downhole hammers, roller-cutters, longwall plow chisels, longwall shearer picks, hoʻāla i nā reamers hōʻoluʻolu, a me nā mīkini hoʻoluhi tunnel.

Loaʻa iā Zzbetter ka mana koʻikoʻi no ka mea maka o ka daimana grit a me ka substrate carbide. No ka hana ʻana i ka ʻaila ʻaila ʻoki ʻoki PDC, hoʻohana mākou i ke daimana i lawe ʻia mai. Pono mākou e ʻoki a hana hou iā ia, e hoʻonui i ka nui o ka ʻāpana. Pono mākou e hoʻomaʻemaʻe i ka mea daimana. Hoʻohana mākou i ka Laser Particle Size Analyzer no ka nānā ʻana i ka puʻupuʻu nui o ka ʻāpana, ka maʻemaʻe, a me ka nui no kēlā me kēia pūʻulu o ka pauka daimana. Hoʻohana mākou i nā pauka puʻupaʻa kiʻekiʻe me nā māka kūpono e hana i nā substrates tungsten carbide.

Ma Zzbetter, hiki iā mākou ke hāʻawi i kahi ākea o nā mea ʻoki kikoʻī.

E kelepona mai iaʻu no ka ʻike hou aku. E leka uila: irene@zzbetter.com

Welina mai e hahai i kā mākou ʻaoʻao hui: https://lnkd.in/gQ5Du_pr

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