Provide details as to the range of materials that it can machine with such a low pressure. I know there are machines with 300 MPa, which can be used to drill even Titanium alloys.
The low pressure of the pump limit the thicknes of the material can be cut. There arent a relation between pressure an material type.
and by the way are you sure there isn't any relation between pressure and material type. What i have understood is that, by higher pressure the nozzle can achieve higher velocity. And the jet velocity required for one material may not be enough for other material. At high velocity impact is high.
Excuse me Sir. Your machine is an ABRASIVE water jet machine?
Yes. In fact maximum pressure achievable is not 20 MPa, but 60 MPa
I think your machine can be used for research purpose, but in lower thickness material.
Exactly there are a relation with the material, but in first place is with the thickness, in second with the quality of the cut (low speed better quality), and in last place with the material.
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