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
Switched capacitor hold-up scheme for constant boost output voltage
Bias voltage generating circuit and switching power supply thereof
System and method for backup communication over ethernet
Data distribution apparatus, data distribution method, and distribution control program
Solid-state imaging device, method for manufacturing solid-state imaging device, and electronic apparatus
Structure of circuit board and method for fabricating the same
Organic light emitting diode light source device
  Randomly Featured Patents
Digital system for generating laser-modulation multi-channel circuit control signals for an oscillating mirror projector of scanned images
Composition and method for the detection of diseases associated with amyloid-like fibril or protein aggregate formation
Key management in encryption systems
Method for preparing hydrogenation purification catalyst
Liquid crystal optical element and an optical device
Method of manufacture of as-cast composite roll
All optical display with storage and IR-quenchable phosphors
Threshold assembly for a garage door
Information handling system for use with information containing storage discs
Changing station