Method for improving fatigue strength of a workpiece and the workpiece thereof
AssigneeTata Steel Limited
InventorsSuman Guha, Rudra Bubai Sarkar, Rahul Kumar Verma, Gujre Vinay Sanjay, Shaik Shamshoddin
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Abstract
The present disclosure discloses a method for improving fatigue strength of a workpiece (100). The method comprises positioning the workpiece (100) in a punch and die assembly (102). Operating the punch and die assembly (102) one or more times to imprint surface features (2) on a portion of a surface of the workpiece (100), wherein the surface features (2) induces compressive residual stresses at a sub-surface level of the workpiece (100), and improves the fatigue strength of the workpiece (100).
Claims10
A method for improving fatigue strength of a workpiece, the method comprising:
- positioning the workpiece in a punch and die assembly;
- providing at least one template mesh selectively on a portion of at least one surface of a workpiece;
- operating the punch and die assembly one or more times to imprint surface features on a portion of a surface of the workpiece, by the at least one template mesh wherein the at least one template mesh is defined with a material strength greater than material strength of the workpiece;
- and
- wherein the surface features formed by the at least one template mesh induces compressive residual stresses at a sub-surface level of the workpiece, and improve the fatigue strength of the workpiece.
Dependencies are inferred from the claim text.