ʻO wai ka mea ʻoi aku ka maikaʻi, kahi ʻāpana pololei a i ʻole kahi ʻāpana keʻa?
ʻO ka inoa ʻo "cross-shaped drill bit" mai ka ʻoiaʻiʻo ua hoʻopili ʻia kahi ʻāpana paʻa paʻa keʻa i ka piko o ka bit drill. ʻIke ʻia hoʻi ma ke ʻano he pihi pihi keʻa, hana ʻia ke kino drill bit keʻa me ke kila 50Cr a hana ʻia e ka extrusion wela, me ka ʻaoʻao o luna i hana ʻia me ka paʻa paʻa a paʻa. I ka wā e pili ana i ka wili, loaʻa i kekahi mau kaula, ʻaʻole i loaʻa i kekahi; ʻo ka poʻe ʻaʻohe kaula pili pono i ke koʻokoʻo drill. ʻO nā nui maʻamau no nā bit drill-like me φ28, φ32, φ34, φ36, φ38, a me φ40, me ka 40-nui ka mea maʻamau. Hoʻohana nui ʻia nā ʻāpana drill like ʻole i ka mining, excavation tunnel, a me nā papahana kūkulu, e ʻae ai i ka wili ʻana i ka pōhaku a i ʻole ka lanahu me ka hoʻemi ʻole ʻana i ka pono o ka wili ʻana ʻoiai ke hana ʻana i nā ʻāpana nui. ʻO ka huli ʻana iā Yimei Machinery Manufacturing Co., Ltd. e hāʻawi i ka ʻike hou aku.
ʻO nā hiʻohiʻona o nā ʻāpana drill-like me nā kaʻina hana maʻalahi, maʻalahi ka hoʻohana ʻana, nā kumukūʻai haʻahaʻa, a me ka hiki ke hoʻololi i nā kūlana pōhaku. Me nā kaʻina hana maʻalahi, maʻalahi ka wili hou ʻana, a me ka hana hilinaʻi, hiki ke hoʻololi ʻia nā ʻāpana drill me ke ʻano keʻa i nā ʻano pōhaku like ʻole. Hoʻohana pinepine ʻia lākou me ka hoʻoheheʻe ʻana i loko māmā, ka uila, ka pneumatic, a me ka hydraulic rock drill e wili i nā lua me nā anawaena ma lalo o D50mm i nā ʻano pōhaku like ʻole. Ma muli o ko lākou kumu kūʻai haʻahaʻa a me nā ʻano ʻano ʻē aʻe, hoʻohana nui ʻia nā ʻāpana drill-like i loko o ka ʻoihana eli ma Kina no ka ʻeli ʻana i nā lua pōhaku liʻiliʻi a liʻiliʻi.
