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
Systems and methods for arranging and labeling cardiac episodes
Viewing stand
Active pulse blood constituent monitoring
Analysis of stress impact on transistor performance
Test framework of visual components in a multitenant database environment
Method for editing a media clip in a mobile terminal device, a terminal device utilizing the method and program means for implementing the method
Apparatus for generating electrical energy from rocking activated energy
  Randomly Featured Patents
Material level detector and control
Amido-linked oligosaccharide alditols and a process for their manufacture
Cord clasp
Slipper guide for a hydrostatic transmission
Ice chopper apparatus for producing ice particles of controlled size
Hand-held visual signaling device
Spin-torque memory with unidirectional write scheme
Method for the synthesis of bis-tetrahydrofuranyl Annonaceous acetogenins
Endless track and a manufacturing method thereof
Power converter and control method for a power converter using serially-connected DC power sources