1、 Key points of processing technology

1. Optimization of cutting parameters

Recommend using hard alloy cutting tools with a speed controlled between 50-80m/min;

Suggested feed rate is 0.1-0.3mm/r, cutting depth is 1-3mm;

Emulsified coolant should be used to reduce cutting temperature during processing.

2. Heat treatment specifications

Solution treatment temperature: 950-980 ℃ (β phase zone);

Time treatment temperature: 550 ± 10 ℃, insulation for 4-6 hours;

Annealing temperature: 700-750 ℃ (stress relief).

3. Welding process

Priority should be given to vacuum electron beam welding or plasma arc welding;

The protective gas requires the use of 99.999% high-purity argon gas.

2、 Precautions for use

1. Aerospace applications

Suitable for manufacturing key components such as aircraft landing gear and engine blades;

Working temperature limit: Long term use ≤ 400 ℃, short-term use ≤ 550 ℃.

2. Corrosion environment selection

Excellent performance in seawater and chloride ion environments;

Avoid use in reducing acid (such as hydrochloric acid) environments.

3、 Quality Control Standards

1. Mechanical performance requirements: Tensile strength ≥ 895MPa; Yield strength ≥ 825MPa; Elongation rate ≥ 10%.

2. Surface treatment requirements: After acid washing, the surface roughness Ra should be ≤ 1.6 μ m; The recommended thickness for the anodic oxide film is 5-15 μ m.