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Waterjet Group -> Tips and Questions -> Jet shape problems with .007/.020 combi
Post Info TOPIC: Jet shape problems with .007/.020 combi
sailwa66


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Jet shape problems with .007/.020 combi
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Anyone using a .007 orifice / .020 mix tube combination with success on a Paser ECL head?  With just the water on, the jet is perfect, with zero flare/haze.  When I turn the garnet on, the jet turns into a super-flared, hazy, spitting mess.  Here's my setup:

Paser ECL head, freshly rebuilt mini on/off valve, works perfect with .013/.030 & .014/.040 combis
.007 ruby orifice, brand new
.020/3 premium mix tube, brand new
150 hpx garnet in a custom-made pressure tank (so I don't have to purge the main hopper/lines)
.075, .100 & .125 metering discs (tried all 3)
1/4 & 1/8 garnet feed lines (tried both)
set at 50ksi

'Normal' logic says that if the orifice is blown, the water-only jet is toast, so I have to assume the orifice is OK.  I have a good vacuum signal at the mixing chamber, and consistent garnet flow out of the mini hopper.

Anyone got any ideas?

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Topend1


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Never hear of those discs...did you make them?
At any rate if you have good abrasive flow and vaccum I would say check alignment or swap tube and orifice. It is possible to get a orifice that is misaligned. If this were the case it ricochets off the tube wall creating all sorts of issues.

Our setup when cutting small parts is .007/.020 .4 lb/min 180 mesh @ 60,000. we use a small abrasive line that Flows Application gurus told me how to make and have an awesome jet.

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Waterjet Group -> Tips and Questions -> Jet shape problems with .007/.020 combi
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