Kodi Cone Bit Imatanthauza Chiyani?

Cone bit ndi chida chopangidwa ndi tungsten kapena chitsulo cholimba chomwe chimaphwanya miyala pobowola. Nthawi zambiri amapangidwa ndi tiziduswa tozungulira tozungulira tokhala ndi mano olimba omwe amaswa mwala kukhala tizidutswa ting'onoting'ono. Ndi chida chomwe chimagwiritsidwa ntchito kwambiri pobowola trenchless.
Dzina lina la cone bit ndi roller cone bit.

Trenchlesspedia Ikufotokoza za Cone Bit
Howard Hughes, Sr. amadziwika kuti ndi amene anayambitsa makina obowola miyala a "Sharp-Hughes". Analandira chiphaso cha izo mu 1909. Mwana wake, wodziwika bwino Howard Hughes, Jr., anakhala mmodzi mwa anthu olemera kwambiri padziko lonse lapansi pogwiritsira ntchito ndalama zomwe zinatulukira panthawi ya kuphulika kwa mafuta ku Texas.

Kutha kuthyola mwala pobowola kunapangitsa kuti cone ikhale chida chabwino kwambiri. Mtundu wamakono wa biti, tri-cone rotary drill bit, imagwiritsa ntchito kuphatikiza kwa kupota ndi kuzungulira kwa zinthu zolimba kuti iphwasule thanthwe pamene ikukankhidwa pansi kwambiri. Madzi othamanga kwambiri amakakamizika kupyolera mu annulus wa chingwe chobowola, chomwe chimachotsa zidutswa za miyala yosweka ndikuzibwezera pamwamba.