Q1: How is alloy chemistry verified?
Glow discharge spectrometry (GDOES) detects light elements (Li, Be) to 0.1 ppm. LIBS analyzers validate scrap composition in 20 seconds. ICP-OES monitors trace impurities (Na, Ca) during casting.
Q2: What mechanical tests ensure reliability?
Tensile testing per ISO 6892-1 measures yield strength (Rp0.2) ±1% accuracy. Notched impact tests at -196°C validate cryogenic applications. Rotating bending fatigue tests simulate 10⁷ loading cycles.
Q3: How are internal defects detected?
Phased-array ultrasonics identify 0.3 mm voids in forgings. Computerized tomography (CT) scans porosity in castings. Eddy current testing finds 50 μm cracks in tubing at 5 m/min.
Q4: What coating quality standards apply?
ISO 7599 certifies anodic coating thickness (>10 μm). ASTM D1654 validates paint adhesion via cross-hatch testing. Salt spray resistance (ASTM B117) requires >1,000 hours for marine components.
Q5: How is dimensional accuracy controlled?
Laser trackers measure 20-meter extrusions within ±0.1 mm. Inline profilometers scan surfaces at 200 m/min. Coordinate measuring machines (CMM) verify aerospace tolerances (±0.01 mm).
