-
Corporate
Thai Parkerizing is a leader in Heat & Surface treatment business. -
Chemical Products
Surface treatment chemicals for a diverse range of purposes with our extensive technical supports. -
Processing Services
Various kind of heat and surface treatment services to fulfill customer requirements with high quality systems. -
Laboratory Services
Thai Parkerizing Analysis Center is an analysis and testing laboratory in chemical, metallurgical and environmental fields. - Articles
- Contact us
Shot Peening
Shot peening is a cold-working process intended to produce surface deformations with the purpose of developing residual compressive stress, which will improve fatigue resistance, results in delayed crack initiation and retarded crack propagation from the surface. It also prevents stress corrosion failures and prolong product life span.
Download PDF
 |
Shot PeeningTensile residual stress at the component surfaces after manufacturing processes such as milling, grinding or heat treatment process such as carburizing, carbonitriding and quenching, increase the stress during fatigue loading. This accelerates the fatigue crack initiation and increases the fatigue crack propagation rate. On contrary compressive residual stress induced over the surface of components by shot peening and leads to improving the fatigue resistance which results in delayed crack initiation and retarded crack propagation from the surface Shot peening is a cold-working process intended to produce surface deformations with the purpose of developing residual compressive stress. When impact loads on the material surface would cause the surface layer to expand laterally, the layer underneath prevents surface layer expansion, creating the compressive residual stress at the surface. Shot size is an important parameter which will effect on compressive residual stress and surface finish of a component. As shot diameter increase which will increase the magnitude of maximum compressive residual stress as well as push its location inside away from surface. As hardness of shot increases there will be increase in the value of surface compressive residual stress. |
QUALITY STANDARDS
Thai Parker has continuously improved and developed our production processes and management system until we received the quality and environmental management system certifications.
Get the info you’re looking for right now!
If you can’t find the answer you’re looking for, we’d love to hear from you – whether you’re curious about features, a sample trial, or even pricing—we’re ready to answer all questions a find the right products for you!
0-2324-6600
Feature
- Improved fatigue strength
- Prevents cracking due to wear
- Improves tooth bottom, tooth plane strength
- Improved wear and abrasion resistance.
Application
- Shaft Input
- Ring Gear,Pinion
- Gear Final Driven
- Ring Gear,Bevel
Frequently Asked Questions
Shot Peening is performed to increase the fatigue strength and extend the service life of metal parts, especially those subjected to high cyclic stresses or vibrations.
The main reasons for doing it are:
- Preventing Crack Initiation and Propagation: Since cracks cannot propagate in a compressive environment, the residual compressive stress layer acts as a barrier, significantly slowing or preventing the formation and growth of surface cracks.
- Converting Tensile Stress to Compressive Stress: Most fatigue cracks initiate and propagate under Tensile Stress on the surface (often induced by other manufacturing processes like grinding, machining, or heat treatment). Shot Peening replaces this surface tensile stress with a beneficial layer of Compressive Stress.
- Increasing Resistance to Stress Corrosion Cracking: The compressive stress at the surface reduces the likelihood of cracks forming in corrosive environments when combined with stress.
