PRECISION ABRASIVE WATERJET MACHINING SUITE
Waterjet Abrasive Garnet Flow & Dynamic Pierce Calculator
Calculate optimum 80 vs 120 mesh abrasive garnet mass flow rate ($\text{g/min}$), low-pressure vacuum assist pierce delay timing ($t_{\text{pierce}}$), jewel orifice to mixing tube ratio ($d_o / d_m$), and abrasive consumption economics for titanium, granite, armor steel, and laminated composites.
1. Pump Pressure & Nozzle Geometry
2. Material Spec & Pierce Style
Garnet Mass Flow & Hydraulics
3.00:1 OPTIMAL RATIOOptimum Garnet Mass Flow
450 g / min
~1.00 lb / min
Water Volumetric Flow Rate
3.78 L / min
1.00 GPM @ 60,000 PSI
Effective Cutting Kerf Width
1.12 mm
$d_m + 0.05$ mm stream expansion
Jet Velocity at Exit ($V_j$)
912 m / s
Mach 2.7 Supersonic Stream
Dynamic Piercing & Economics
Calculated Pierce Delay ($t_p$)
3.8 Seconds
Dynamic Wiggle Motion
Abrasive Cost per Hour
$13.50 / hr
@ $0.50/kg standard garnet
Recommended Lead-In Length
6.5 mm
Prevents crater blow-in
Delamination Risk Index
LOW RISK
Safe hydraulic pressure ramp
CAM DXF Piercing & Lead-In Specification
LEAD_IN_VECTOR: Curved radial arc $\ge 6.5$ mm with $0.20$ mm overlap
KERF_OFFSET_DXF: Program CAM tool radius offset $= +0.56$ mm
PIERCE_DWELL: Dwell timer set to $3.8$ sec before motion start
CORNER_SLOWDOWN: Decelerate by $40\%$ within $3\times T$ of sharp inside vertices
KERF_OFFSET_DXF: Program CAM tool radius offset $= +0.56$ mm
PIERCE_DWELL: Dwell timer set to $3.8$ sec before motion start
CORNER_SLOWDOWN: Decelerate by $40\%$ within $3\times T$ of sharp inside vertices