Resources Contact Us Home
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
Method for transforming a single reactor line
Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation
Control system for an internal combustion engine
Method for manufacturing thin film transistor and method for manufacturing display device
Methods and apparatus for address translation functions
Methods of enhancing diabetes resolution
User interfaces
  Randomly Featured Patents
Method and apparatus for the placement of a bridge element
Unit carrier and internal combustion engine
Minimal pin projection roller chain
Carnation plant named `Sunflor Vino`
Fuel injection control system for a multi-cylinder internal combustion engine
Throat for floating fountains and display aerators
Method for recording and reproducing a radiation image, apparatus using said method, panel for storing a radiation image and photostimulable phosphors
Firearm with interchangeable barrels and ammunition cylinders
Roundabout or merry-go-round