Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method for producing laser-welded tubes and apparatus for producing the same










Image Number 13 for United States Patent #5968380.

In case of producing a welded tube from a metal band by using laser welding, edges of the metal band are preheated so that the temperature at the edges of the metal band before laser welding is not less than a predetermined temperature, the preheated abutting edges of the metal band are laser-welded to form a welded tube and welding beads generated on the outer and/or inner surfaces of the welded tube having been produced are eliminated by cutting. The predetermined temperature is determined depending on the thickness of the metal band and the time from the start of laser welding to the cutting of the welding beads. The edges of the metal band are preheated before welding to prevent the welding beads from being hardened by quick cooling at the welded section after laser welding.








 
 
  Recently Added Patents
Lacrosse head
Switching module and switching synchronization system
Computer system and volume migration control method using the same
LED string with a capability to maintain a current path and LED unit thereof
VGPU: a real time GPU emulator
Mounting structure, electro-optical apparatus, and touch panel
Methods for integrating the production of cellulose nanofibrils with the production of cellulose nanocrystals
  Randomly Featured Patents
Method of storing and dispensing paper in a ream wrap
Word game
Semiconductor device and a method of manufacturing the same
Fabrication of a low-loss plastic optical fiber
Microwave sintering of nanophase ceramics without concomitant grain growth
System and method for performing automatic spread trading
Pharmaceutical composition and a method for treating neurodegenerative diseases using a combination of a kainate excitatory amino acid antagonist and an uricosuric agent
Protective helmet for sports use and for work use
Dual pharmacophores--PDE4-muscarinic antagonistics
Herbicidal ortho-alkyl- and ortho-alkenyl-substituted benzenesulfonamides