E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
E02F 3/38 (2006.01) B23K 9/00 (2006.01) B23K 31/00 (2006.01)
Patent
CA 2573225
The present invention provides a boom and arm member of a construction machine excellent in weld zone fatigue strength and a method of improvement of its fatigue strength, that is, a boom and arm member of a construction machine superior in weld zone fatigue strength, the boom and arm member of a construction machine characterized in that toes of full penetrated weld zones of the boom and arm member have vibration strike marks, and a method of improvement of its fatigue strength. Preferably, the residual stress of the bottom surface of the vibration strike marks is a 10 MPa or higher compressive residual stress.
Segment de bras pour engin de chantier, dont les soudures offrent une haute résistance à la fatigue, et méthode d'amélioration de cette résistance. Une extrémité de section soudée entièrement pénétrée du segment de bras présente une marque de coups due aux vibrations. De préférence, une contrainte propre dans le fond de la marque de coups correspond à la contrainte propre de compression supérieure ou égale à 10 Mpa.
Nakashima Kiyotaka
Nose Tetsuro
Goudreau Gage Dubuc
Nippon Steel Corporation
LandOfFree
Boom and arm member of construction machine excellent in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Boom and arm member of construction machine excellent in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boom and arm member of construction machine excellent in... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1645223