Re-Engineering Shot Peening: From Manual Air Nozzles to Automated Wheel Systems

Author:  Utkarsh Ashok Singh | Mechanical Engineer, LS Industries
Source:  The Shot Peener magazine, Vol 40, Issue 2, Spring 2026
Doc ID:  2026013
Year of Publication:  2026
Abstract:  
INTRODUCTION Shot peening rarely attracts attention outside specialist circles, yet it quietly protects the parts that matter most. When an aircraft structure survives a long service life, or when a rail component resists years of cyclic loading, it is often because the peening was consistent. That balance is difficult when parts are long, thin, or complex in shape. The engineering task is to achieve the required residual compressive stress without distorting the component, and to do so in a way that production teams can repeat day after day. This work describes the migration from a legacy manual air routine, which occupied roughly a week per part, to a wheel‑type system with an integrated monorail and recipe‑driven controls. The result was a single, steady pass through the cell that finished in about twenty‑five minutes while maintaining low Almen A intensities and high coverage. Beyond the headline numbers, the value is that operators now work with clearer recipes, steadier handling, and a process that is easier to audit. Customer‑specific details are withheld by agreement, but the methods and results are transferable to similar programs.