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BORE-BIT [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-05-18

English

Subject field(s)
  • Tunnels, Overpasses and Bridges
  • Ground-Drilling Facilities (Mining)
  • Construction Site Equipment
DEF

A cutting device attached to, or part of, a drill rod or string to bore or penetrate rocks.

CONT

Drill steel. In rock drilling, the round or hexagonal steel bar (not less than 18 mm across the flats) which enters the hole in the rock. It has a drill bit forged or screwed on to its end.

CONT

The drill bit is a short section screwed onto shaft at varying lengths up to 48 inches and may be tipped with very hard material.

OBS

When the bit is not part of the drill itself, it is called "detachable bit", "knock-off bit", or "rip bit."

PHR

Raise borer.

French

Domaine(s)
  • Tunnels, viaducs et ponts
  • Installations de forage minier
  • Matériel de chantier
DEF

Instrument en acier à pointe biseautée utilisé en terrassement pour le forage des trous d'explosifs ou dans le forage minier pour le creusage de trous de mine.

CONT

Le forage des trous de mine [...] s'effectue [...] au moyen des marteaux perforateurs pneumatiques à avancement automatique équipés de fleurets à taillants.

Spanish

Campo(s) temático(s)
  • Túneles, viaductos y puentes
  • Instalaciones de perforación minera
  • Equipos de construcción
DEF

Instrumento de filo cortante y giratorio con que se taladran los metales, la madera y otras materias sólidas.

CONT

Para sondar y abrir barrenos, se usan varias clases de barrenas o sondas de mano giratorias (barrenas ordinarias, de cuchara y de saco) y de percusión (de sección llena, helicoidales o huecas, por cuyo taladro se inyecta aire comprimido o agua para arrastrar el polvo arrancado a la roca). Su boca puede tener filo simple o doble, o bien en forma de corona, de cruz o de zeta.

OBS

Los términos "barreno" y "taladro" son polisémicos dentro del mismo campo. "Barreno" puede significar tanto el instrumento de filo cortante como el agujero que se taladra con él. "Taladro", a su vez, puede hacer referencia al instrumento filoso, al aparato en el que se coloca dicho instrumento y al agujero que deja.

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