Welcome to FLYcncpart's annealing services! Through controlled heating and cooling, we soften metals and improve their machinability. Our Shenzhen team ensures precise processing to meet your manufacturing needs.
Description: Annealing is performed by heating the metal to 600-900°C (depending on the material), holding for 1-4 hours, and then slowly cooling. This reduces internal stresses and hardness, without significantly changing the roughness. The process involves preheating, holding the temperature, and furnace cooling, optimizing the crystal structure.
Applicable Materials: Steel, copper alloys, and aluminum alloys.
Visual Appearance: The surface retains its original condition, with a slight luster or oxidized tint (depending on the protective atmosphere).
Advantage
Stress Relief: Eliminates residual stress caused by machining or cold working, preventing cracking.
Improves Machinability: Softens the material, facilitating subsequent cutting or forming.
Uniform Crystal Structure: Improves toughness and ductility, reducing brittleness.
Dimensional Stability: Slows cooling to prevent deformation and maintain tolerances.
Economical: Simple process, suitable for high-volume processing.
Versatility: Suitable for forgings, castings, or welded parts.
Precautions
Temperature Control: 600-900°C. Excessively high temperatures can result in coarse grains. Material properties should be tested.
Cooling Rate: Furnace cooling is used to avoid quenching effects. Cooling uniformity should be tested.
Protective Atmosphere: Nitrogen or vacuum should be used to prevent oxidation. Surface inspection should be performed.
Design Considerations: Ensure uniform wall thickness and avoid heat-sensitive areas.
Quality Standards: Comply with ASTM E384, inspecting hardness and microstructure.
Safety Measures: Protect against high-temperature operation and control exhaust gases.
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