Cavitation Water Jet Peening

An innovative processing technology that improves the fatigue strength and life of metal parts by utilizing water.
Cavitation water jet peening used on a metal part

High pressure water is jetted into the water at high speed from a special cavitation-promoting (air bubble) nozzle to cause cavitation, and GPa (gigapascal) class impact force when bubbles collapse near the workpiece produces a peening effect. 

illustration of cavitation water jet peening

Increased fatigue strength:
Applying compressive stress to a depth of about 1mm from the surface.

Longer life:
Improves fatigue strength and life.

Clean processing method:
Shotless processing method using only water, no cleaning process required.


Strength and long life:
Increased fatigue strength of steel and aluminum alloys

Prevention of stress corrosion cracking:
Welded parts of structures

Removal of undissolved surface, surface finish:
Post processing for additive manufacturing part

Cavity Bubble: Birth → Growth → Collapse
Illustration of shotless water peening

Improved Fatigue Strength

Compressive stress can be applied to a depth of nearly 1 mm from the surface layer.
Chart that shows improved fatigue strength

Long Life

Fatigue life and fatigue strength can be improved.
Chart that shows fatigue life increase

A clean processing method

  Shotless processing method
  Uses only water
  No cleaning process required

Process Comparison
Sugino Harnesses the Power of Water
We have a long history of utilizing water to cut, to deburr, to clean, to atomize, and now to peen metals. We started working with water nearly 60 years ago - and have become masters at using renewable natural resources and incorporating sustainability - to affect industry and manufacturing.


Find out if Cavitation Water Jet Peening can improve your process.