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Skirt-type core spring
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
A core lifter, usually a split-ring type, having a split, thin tubular extension attached above the beveled portion of the core spring, which slides upward and inside the lower end of the inner tube of a core barrel.
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Slip-type core lifter, английский
A device used like a core spring, consisting of a series of tapered wedges contained in slotted recesses in a circular ring or sleeve; as the core enters the inner tube, it lifts the wedges along the taper, and when the barrel is lifted the wedges are pulled tight against the core.
Sintered matrix, английский
A bit-crown diamond-embedment metal or alloy produced by a sinter powder-metal process. see sinter, sinter bit.
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