Flow Mach 4 3020

Flow's published parameters for 25 mm Ti-6Al-4V at 87,000 psi with the standard 0.014 in orifice and 500 g/min garnet: approximately 200–300 mm/min at Quality 3 (production quality, suitable for aerospace parts requiring finish grinding after cutting). For Quality 5 (fine finish, near-net shape with minimal post-processing): approximately 100–150 mm/min. On 50 mm Ti-6Al-4V at Quality 3: approximately 80–120 mm/min. These speeds are nominal — actual cutting speeds vary with pump wear, abrasive quality, orifice condition, and ambient temperature. Flow's FlowMaster software contains the validated parameter database for standard materials and thicknesses.

Flow rates cut quality on a Q1–Q5 scale: Q1 (fastest, roughest — separation cuts, scrap removal); Q2 (moderate rough — parts where edges will be machined); Q3 (production quality — parts with edges that may be used as-cut for most applications); Q4 (fine quality — smooth edge surface, ±0.15 mm dimensional accuracy); Q5 (precision quality — finest surface finish, ±0.05 mm dimensional accuracy, near-net-shape). Higher quality requires lower cutting speed. For most fabrication work, Q3–Q4 is appropriate. For aerospace structural parts going to assembly, Q3–Q4 with limited post-processing is typical. For precision gauges and fixtures requiring tight tolerance, Q5.

Large granite and marble slabs (150–200 mm thick, 2,000+ mm wide) are placed on the water table support slats. Flow's soft-catch bottom table support (water-filled tank below the slats) supports the slab and absorbs the waterjet after it exits the material. For 200 mm granite at moderate quality: cutting speed is 100–250 mm/min with abrasive waterjet at 87,000 psi. The 3,000 mm X travel allows cutting full-width slabs without repositioning. For precision stone inlays and mosaics, Q4 cutting provides smooth edges that mate cleanly for tight-fitting stone patterns. The water bath also contains the garnet slurry and stone dust for collection and disposal.

For aerospace titanium waterjet cutting: NADCAP AC7117/4 (Waterjet Cutting) is the primary process certification required by Boeing, Airbus, Lockheed Martin, and most aerospace primes. NADCAP certification requires: documented and validated process parameters for each material/thickness; preventive maintenance records; qualified and trained operator records; coupon testing records showing dimensional capability and edge quality; and successful NADCAP audit. Flow provides NADCAP preparation packages including sample process documentation templates, parameter validation test procedures, and references to existing Flow NADCAP-certified customers who can provide guidance. Flow's Mach 4 is used in more NADCAP-certified waterjet facilities than any other waterjet brand.

Flow HyPrecision crankshaft pump maintenance intervals at full production cutting: Check valves (high-pressure check valves, one on inlet/one on outlet per intensifier end): replace every 250–400 hours. High-pressure seals (plunger seals, end cap seals): replace every 300–500 hours. Intensifier rebuild (full plunger, packing, check valve kit): every 1,000–1,500 hours. Hydraulic oil change: every 1,000 hours. Annual full pump inspection recommended. Estimated annual consumable maintenance cost at 2,000 hours/year: $8,000–$15,000 for pump consumables alone, not including labor. This compares favorably to the Flow/OMAX direct-drive pump designs at comparable hour counts in Flow's published reliability data.