The manufacturing process of ultra-thin-walled tantalum capillary tubes first selects tantalum as the metallic material. Key processes include annealing, stretching, and the use of specialized stretching equipment. The beneficial effects of this invention are: through the above processing, several key technologies can be overcome to manufacture ultra-thin-walled tantalum capillary tubes with a thickness of less than 0.03 mm.
The key processes are as follows:
1. Annealing process requirements: Depending on the outer diameter and wall thickness, the annealing temperature should be controlled between 800-1200 degrees Celsius, the holding time between 5-15 minutes, the temperature difference within the effective annealing temperature range should not exceed 10 degrees Celsius, the vacuum level of annealing should be above 10-4, and natural cooling should be performed in a vacuum;
2. Stretching process requirements: For manufacturing capillary tubes with a wall thickness of less than 0.1 mm, the single elongation rate should not exceed 10%, and the total cumulative elongation over the cycle should not exceed 20%;
3. Use of specialized stretching equipment: Employing a vibration-free spiral hydraulic stretching machine reduces the risk of breakage during the stretching process. The beneficial effects of this invention are: through the above-described processing techniques, ultra-thin-walled tantalum capillary tubes with a thickness of less than 0.03 mm can be manufactured.
The following processes are employed:
1. Annealing process: The annealing temperature is controlled between 800-1200 degrees Celsius, depending on the outer diameter and wall thickness. The holding time is between 5-15 minutes, the temperature difference within the effective annealing temperature range is no greater than 10 degrees Celsius, and the vacuum level during annealing should be above 10⁻⁴, followed by natural vacuum cooling.
2. Stretching process requirements: For manufacturing processes with a wall thickness of less than 0.1 mm, the single elongation rate should not exceed 10%, and the total cumulative elongation over the cycle should not exceed 20%.
3. Dedicated stretching equipment: A vibration-free spiral hydraulic stretching machine is used to reduce breakage during the stretching process.
The beneficial effects of this invention are: through the above-described processing techniques, several key technologies can be overcome, enabling the manufacture of ultra-thin-walled tantalum capillary tubes with a thickness of less than 0.03 mm.
