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
Round carrying case
Resistor-2 resistor (R-2R) digital-to-analog converter with resistor network reversal
Mounting apparatus for PCI card
Pharmaceutical composition for treating CAPRIN-1 expressing cancer
Resin composition and molded article
Blur correction device and imaging apparatus
Egg separator
  Randomly Featured Patents
Control for variable geometry compressor
Data processing apparatus which transmits data for display to external display device, data output method, and data output program
Kite
Method, system and mobile terminal for processing short message
IC card connector
Method for manufacturing semiconductor device, and substrate processing apparatus
Treatment of hepatobiliary disease with 15-keto-prostaglandin compounds
Local buckling performance evaluating method for steel pipe, steel pipe designing method, steel pipe manufacturing method, and steel pipe
Computer mouse for automating input operations
Clothing having cups