关键词: 管材；翻管；助推式翻管；成形

Abstract:

On account of the drawbacks of the traditional thin-walled tube inversion method, a new boosted tube inversion process was put forward. The die radius r, inner diameter D and velocity v of the booster block were determined by Finite Element simulation, meanwhile the device for boosted tube external- inversion was made. Both the theoretical and experimental studies indicate that the quality of the double-walled tubular part produced by boosted tube inversion device is much higher than the quality of the part from any other inversion method, the rate of finished products is much higher.

Key words: tube, inversion, boosted tube inversion, forming