Shot blasting application

When does shot peening and stress relief need a controlled shot blasting machine?

Shot peening is a controlled shot blasting machine process: the same impact that cleans steel can also put a compressive layer into springs, gears and highly loaded parts.

  • Shot blasting machine
  • Application-led sizing
  • Manufacturer-direct
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What this job is

How peening differs from a normal cleaning blast

Shot peening and stress relief use a shot blasting machine with tightly controlled media, intensity and coverage to induce compressive residual stress in the surface of a component.

Unlike cleaning, the aim is not to strip scale. It is to improve fatigue life, resistance to cracking and surface integrity on springs, gears, shafts and other parts that see cyclic load.

Intensity (Almen), coverage and shot size are specified. Table, hanger and dedicated peening setups are used when the drawing calls for peening rather than a general blast.

  • Parts last longer under cyclic load
  • A process you can write down and repeat
  • Critical parts get a spec, not a guess

Why it matters

Why plants put this on the line

A shot blasting machine earns its place on the line when this process cuts rework, hits a spec, or replaces slow manual prep.

Parts last longer under cyclic load

Compressive stress at the surface delays crack start on cyclically loaded parts.

A process you can write down and repeat

Almen strips and coverage checks turn peening into a repeatable production step, not a visual blast.

Critical parts get a spec, not a guess

Springs, gears and highly loaded components can be processed to a written spec.

You can clean first, then peen

Some lines clean first, then peen, with a media change on related blasting equipment.

Useful right after heat treatment

Peening restores surface integrity on parts that come out of quench and temper.

Less crack risk at the notches

Compressive stress is most useful at fillets, holes and other stress raisers.

Recommended equipment

What we usually specify for this job

Shot, sand and grit blasting machines commonly specified for shot peening & stress relief. Final selection depends on part size, finish and daily volume.

Where it is used

Where this work typically shows up

Plants specify a shot blasting machine for shot peening & stress relief when the process has to be repeatable, documented and faster than hand prep.

Automotive & springs

Leaf springs, coil springs and suspension parts peened for fatigue performance.

Gear & transmission plants

Gears and shafts specified with a peening call-out after heat treatment.

Heavy equipment OEMs

Highly loaded pins, links and structural details that see cyclic stress.

General engineering

Any drawing that asks for shot peening rather than a cosmetic blast.

Aerospace components

Landing-gear and highly loaded parts peened to a written intensity.

Railway axles & wheels

Rotating parts peened where cyclic load starts cracks at the surface.

Tooling & dies

Dies and tooling peened to delay surface cracking in service.

Energy turbine parts

Blades and discs processed where fatigue life is on the drawing.

Recommended abrasive

What media this job usually runs

Abrasives commonly specified for shot peening & stress relief. Final selection depends on substrate, profile and whether the work is shop or site.

Ready in stock Cut Wire Shot
4.8 45 reviews
Price range ₹100 - 500 / kg

Cut Wire Shot

Ready in stock Steel Shots
4.8 37 reviews
Price range ₹65 /Kg - 100 /Kg

Steel Shots

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