A physical simulation of longitudinal seam welding in micro channel tube extrusion

- Micro channel tube has many unique characters, as high heat transfer coefficient, light weight, high pressure bearing capacity.
- Seam welding is the key problem for the design of the delicate mandrel which largely decided the service life of the extrusion die.
- Experiment of physical simulation of seam welding can find balance between the welding quality and the mandrel performance.