Maitiro Ekusarudza Dhirivhari Remhepo Yakakwira Yakakodzera Pasi Pegomba?

Mumapurojekiti ekuboorera pasi pegomba ane simba rakawanda, kuti chinangwa chekuchera chibudirire uye nekukurumidza, zvakakosha kusarudza mabhiti ekuboorera pasi pegomba emhando yepamusoro uye anoshanda, ndiko kuti, kusarudza mabhiti ekuboorera pasi pegomba ane maumbirwo akasiyana zvichienderana nenzira dzakasiyana dzekuboorera uye mhando dzematombo. Zvinhu zvakatevedzana zvakaita sechimiro chemucheto wechiso chebhoorera, chimiro chegomba rinoburitsa hupfu, chimiro chemazino ecarbide nehukuru, kuoma kwemuviri wechibhoorera, nezvimwewo zvinokanganisa zvakananga mwero wekuboorera padombo, mhando yekuboorera, kutwasuka kwegomba, hupenyu hwechibhoorera uye kushanda zvakanaka kwebasa. Saka, kusarudza chibhoorera chakakodzera kwakakosha zvikuru mumapurojekiti ekuboorera padombo.

Kana tichitaura nezvezvibato zvekuboorera zvine simba guru (drill bits), kune mhando ina huru dzekugadzira chiso chekupedzisira dziri kushandiswa parizvino, dzinoti: rudzi rwechiso chekupedzisira chine convex, rudzi rwechiso chekupedzisira chine flat, rudzi rwechiso chekupedzisira chine concave uye rudzi rwechiso chekupedzisira chine deep concave pakati. Carbide inonyanya kushandisa mazino ebhora, mazino espring kana eball nemazino espring pakuronga mazino.

1. Rudzi rwechiso cheConvex: Chinoboorwa checonvex chine simba rekudzvanya pasi pegomba (drill bit) chinogona kuchengetedza mwero wekuboorwa kwedombo wakakwira pakuboorwa kwematombo akaomarara pakati nepakati uye akaomarara, asi kutwasuka kweboorwa kwakashata, uye hachina kukodzera mapurojekiti ekuboorwa kwematombo ane zvinodiwa zvakanyanya zvekutwasuka kwegomba.

2. Rudzi rwechiso chakatsetseka: Chibooreso chemhando yepamusoro chemhando yeflat end-pressure down-the-hole drill bit (drill bit) chakasimba uye chinogara kwenguva refu, uye chakakodzera kuchera matombo akaomarara uye akaomarara. Chakakodzerawo kuchera matombo akaomarara epakati nepakati nematombo akapfava asi zvisingadiwi kuti blasthole ive yakatwasuka.

3. Rudzi rwechiso cheConcave end: Chinoboorwa cheConcave end type chine simba rekudzvanya pasi pegomba (drill bit) chine chikamu checonical concave pamusoro pegomba, izvo zvinoita kuti drill bit iite mhedzisiro ye nucleation panguva yekuboorwa kwedombo, inochengetedza kushanda kwe drill bit pakati, uye gomba rakaboorwa rine kutwasuka kwakanaka. Pamusoro pezvo, drill bit iyi ine simba rekubvisa guruva zviri nani uye inokurumidza kubhoorwa. I drill bit ine simba rekudzvanya pasi pegomba iri kushandiswa zvakanyanya pari zvino.

4. Rudzi rwepakati pechiso chakadzika che concave: Chiso chakadzika che concave centre chine mhepo ine simba guru rekuboorera pasi pegomba (drill bit) chine chikamu chakadzika che concave pakati pechiso chakadzika, chinoshandiswa pakugadzira nucleation mukugadzira dombo. Kuboorera makomba akadzika kunogona kuchengetedza kutwasuka kwegomba, asi simba rechiso chayo chekupedzisira harina kusimba pane mamwe marudzi ema drill bits, saka yakakodzera chete pakuboorera dombo rakapfava nedombo repakati nepakati.