Case background and product characteristics
Processing object: integral blade ring verification part (core component of aviation engine)
Material characteristics:
• Titanium aluminum alloy (density 4.5g/cm³, hardness HRC49.4-53)
• Dimensions 100×78×30mm precision structure
Process requirements:
Closed blade basin and blade back processing (spatial curvature change up to 120°)
Profile ≤0.06mm (equivalent to hair precision)
Surface roughness Ra≤0.4μm (mirror level standard)
Analysis of industry processing pain points
The aerospace field currently faces three major technical bottlenecks:
Material processing difficulties
• Titanium aluminum alloy tensile strength reaches 980MPa
• Traditional tool wear rate exceeds conventional materials by 3 times (data source: ASM Metal Handbook)
Precision control problems
• Front and back processing tool connection error must be <0.02mm
• Complex surface processing thermal deformation reaches 0.15mm (International Aviation Manufacturing Conference 2023)
Workpiece reliability challenges
• The residual stress value of conventional machining surface fluctuates by ±200MPa
• The difference in fatigue life of engine components is up to 30
BISHEN solutions technical innovation
In response to the precision machining needs of aviation-grade titanium-aluminum alloys, the three-in-one ultrasonic green machine tool developed by BISHEN has five major technological breakthroughs:
Compound machining platform
• Five-axis linkage machining center integrated with ultrasonic vibration module
• Multi-purpose blue and white vertical structure adapts to different specifications of fixtures
Low-temperature cutting system
• Supercritical CO2 cooling technology (-78℃ constant temperature control)
• Minimum quantity lubrication (MQL) system reduces friction loss by 31%
Tool enhancement solution
• Ultrasonic internal cooling heat shrink handle increases rigidity by 30%
• Nano-coating tool life is extended by 2.8 times
Comparison of implementation effects of the solutions
Improved machining efficiency
Traditional solution: single tool processing 4 grooves will cause chipping
BISHEN solution: continuous processing of 12 grooves still maintains normal wear
Surface quality leap
• Residual compressive stress increased by 24% (up to -850MPa)
• Fatigue strength increased by 40% (bench test data)
Breakthrough in service performance
• High temperature service life extended by 35%
• Stress corrosion cracking risk reduced by 60%
