Method for detecting titanium alloy impeller surface completeness
A technology of surface integrity and detection method, applied in the field of detection
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[0096] The XX impeller of a turboshaft aero-engine is made of titanium alloy. The required surface integrity index is: the surface roughness of the blade reaches 0.4; the surface residual stress requirement: if the stress measurement value |σ|≥210 MPa, then the stress at each point The change satisfies Δσ≤60 MPa, and the tangential stress satisfies τ≤8 MPa; if the measured stress value |σ|< 210 MPa, then the stress change at each point satisfies Δσ≤30 MPa or σ (the largest of the two values), The tangential stress satisfies τ≤8 MPa; there is no grinding burn and no surface hardening after processing.
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