Resources Contact Us Home
Method of an ultra-short femtosecond pulse and KW class high average-power laser for preventing cold-worked stress corrosion cracking in iron steels and alloyed steels including stainless stee

Image Number 4 for United States Patent #7651576.

The method of preventing cold-worked stress corrosion cracking in the iron steels and alloyed steels including stainless steels comprises removing a residual tensile stressed layer, optionally generating residual compression, through the impact of irradiation with the ultra-short femtosecond pulse and kW class high average-power laser, and removing a hardened surface layer extremely susceptible to stress corrosion cracking, whereby this susceptible hardened surface layer with many concentrated dislocation defects and the likes is removed without generating or introducing any of such hardened layer in the process of its removal. The method is free from the risk of damaging other equipment by peening with steel balls or other shaped shots, is almost unlimited in actual environment, effectiveness, work, place and other conditions for application, is inexpensive, and functions continuously for a much longer period than an ordinary nuclear reactor's service lifetimes.

  Recently Added Patents
Semiconductor memory device
Peer-to-peer, internet protocol telephone system with proxy interface for configuration data
Lock monitoring
Variety corn line NPAA2720
Vehicle seating system and method for reducing fatigue with changing actuator movement
Light-emitting device
System and method for oscillator frequency control
  Randomly Featured Patents
Electrical storage device for a replaceable printing component
Mobile ballast regulator
Gardening post
Dielectric resonator device comprising a dielectric resonator and thin film electrode layers formed thereon
On-line UV-Visible light halogen gas analyzer for semiconductor processing effluent monitoring
Blood tracking system
End brush and method of making
System and method for distributing information in a network environment
Outboard motor
Method for training a basketball player