Pneumatic adjustable tension device suitable for asynchronous electric rolling process of difficult-to-deform alloy

The invention relates to a pneumatic adjustable tension device suitable for a difficult-to-deform alloy asynchronous electric rolling process. The pneumatic adjustable tension device comprises a pulse power supply, a two-roller asynchronous rolling mill, a copper electrode guide roller, a conductive chuck, a tension system, a pneumatic system, a Hall current sensor, a data acquisition card and a computer, the copper electrode guide roller is correspondingly arranged on the inlet side of the two-roller asynchronous rolling mill; the tension systems are correspondingly arranged on the outlet side of the two-roller asynchronous rolling mill and the inlet side of the copper electrode guide roller respectively; the tension systems are connected with the two ends of the strip through conductive chucks respectively. The pneumatic system is connected with the tension systems on the front side and the rear side respectively; a closed loop is formed between the pulse power supply and the strip; and the Hall current sen