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 and system for modeling a common-language speech recognition, by a computer, under the influence of a plurality of dialects
Vehicle speed verification system and method
Paging of a user equipment (UE) within a wireless communications system
Luggage cart
Obviation of recovery of data store consistency for application I/O errors
Process information structuring support method
Semiconductor devices having multi-width isolation layer structures
  Randomly Featured Patents
Process for preparing organic polyisocyanate compositions
Golf ball
Mobile communication terminal, wireless data service authentication server, system for automatically blocking voice call connection, and method of processing various messages in mobile communi
Electrical contact device for an electronic card processing apparatus
Integrated circuit
Benzyl oxime ethers
Method to form low-overlap-capacitance transistors by forming microtrench at the gate edge
Pressure regulating valve, in particular proportional pressure regulating valve
Adjustable anchorage for trusses
Multi-layered anti-reflection coating