Tata Steel Limited

Indian Institute of Technology Hyderabad

Suman Guha

Rahul Kumar Verma

Rudra Bubai Sarkar

Shaik Shamshoddin

Dasu Venkat Raju

Nallagundla Venkata Reddy

Adabala Subrahmanyam

Gujre Vinay Sanjay

Gangavenkataiah Ramu

A system () for sheet metalworking comprising a punch () connectable to a press (P), wherein the punch () is configured with a first electrical terminal (). A die () configured with a die surface (DS), to support sheet metal (SM). A support member () movably disposed in the die (), the support member () is provided with a second electrical terminal (). The support member () and the punch () contacts a working portion (B) of the sheet metal (SM) at an axis (A-A) to supply electric current to a localized region (LR) of the working portion (B) for sheet metalworking.

System for a sheet metalworking and a process thereof

The present disclosure discloses a method for improving yield strength of one or more workpieces. The method includes positioning the one or more workpieces in a punch and die assembly and operating the punch and die assembly such that, a plurality of surface protrusions are formed on the one or more workpieces. The plurality of surface protrusions are formed by plastic deformation on the one or more workpieces, to improve yield strength of the one or more workpieces. The present disclosure also provides an apparatus to improve yield strength of the one or more workpieces. The present disclosure is configured to improve yield strength of the one or more workpieces, without altering its mechanical characteristics.

Method for improving yield strength of a workpiece, an apparatus and a workpiece thereof

The present disclosure discloses a method for improving fatigue strength of a workpiece (). The method comprises positioning the workpiece () in a punch and die assembly (). Operating the punch and die assembly () one or more times to imprint surface features () on a portion of a surface of the workpiece (), wherein the surface features () induces compressive residual stresses at a sub-surface level of the workpiece (), and improves the fatigue strength of the workpiece ().

Method for improving fatigue strength of a workpiece and the workpiece thereof

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Jamshedpur, India

Suman Guha