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
Data paths using a first signal to capture data and a second signal to output data and methods for providing data
Atmospheric treater with roller confined discharge chamber
Method and device for determining a set of frequencies that can be used for transmitting information between radio transceivers of a network operating with frequency hopping
Electric separator, method for the production and use thereof
Arcuate motion control in electrostatic actuators
Tool bag with removable tool wall
Method and system for Bluetooth low power link layer connection setup
  Randomly Featured Patents
Inflatable reading stand
Ski for winter sports comprising a base, a stiffener and a support for bindings
Navigation system
System for accurately confirming cross-connection in a cross-connection network
Novel polyphenol and thermosetting plastics prepared therefrom
Succinoylamino hydroxyethylamino sulfonamides useful as retroviral protease inhibitors
Azolylmethylidenehydrazine derivative and use thereof
Prefabricated curtain wall assembly having both window and spandrel units
Precharge and evaluation phase circuits for sense amplifiers
Electrochemical cell with pressurized liquid electrolyte