Tag Archives: design

Waterjetting 27c – Drilling nozzle design

1.OriginalLeedsdrill

In discussing how stress affects the ability of waterjets to drill rock, I have discussed the effect of the stress in the ground on drill performance, but before discussing the effect of the borehole pressure it is perhaps best to spend this post talking about the simplest drill bit design. The diameter of the first […]

Waterjetting 22c – More on shroud design

2a+Cutting+test

Lowering the pressure in a hose connected to a cutting head, by connecting it to a vacuum pump, will pull a certain amount of the water and debris released from a cutting/cleaning event into that hose. However to ensure that all of this material is captured, rather than just a fraction, requires a little more […]

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