![A 100 mm long cylindrical workpiece of diameter 50 mm is reduced to 25 mm diameter using extrusion process](https://www.gkseries.com/blog/wp-content/uploads/2023/09/A-100-mm-long-cylindrical-workpiece-of-diameter-50-mm-is-reduced-to-25-mm-diameter-using-extrusion-process-1.jpg)
Q. A 100 mm long cylindrical workpiece of diameter 50 mm is reduced to 25 mm diameter using extrusion process. The flow curve for the metal has strength coefficient as K = 750 MPa and the strain hardening co-efficient is 0.15. Assuming no friction and no redundant work, the required ram pressure (in MPa) is closest to
Ans: 950
Sol:
![](https://www.gkseries.com/blog/wp-content/uploads/2023/09/Screenshot-838.png)