75mm∼ 750mm*10mm

High-frequency welding H-beam production line

1.Equipment Description
   High-frequency welding H-beam production of the main technical principle is the use of high-frequency current through the welding head contact with the lower wing and the web directly to heat,so that the base metal fusion,and then by pressure welding Kun welding forming,heating concentrated in the welding parts,Heat-affected zone is small,and in the welding process does not use electrodes,flux,etc.,so the production of H-shaped steel flange formation, high precision,beautiful appearance,and high-frequency welding can be removed without pickling,still can guarantee no inclusion of impurities.

2.Implementation of standards and dimensions:
Standard Specification: JG/T137-2001 "Structural High-frequency Welding of Thin-walled H-beam"
   1.the material Steel grade
   GB700-1998 carbon structural steel Q235B

  Low alloy high structural steel Q345B.


  2.the typical specifications shown in the table,large quantities can be customized acording to design requirements.


  3.the length of the standard length of 6m,9m,12m,15m,according to the design requirements of the length of production


  H min min75,max700

  B min min50,max350
  Tw minimum min2.3,maximum max10.0
  Tf minimum min3.0,max14.0

4.the steel structure design,in order to increase the radius of gyration or cross-section of the moment of resistance,enhance the ability of compression or bending,and often use some of the wide limbs frivolous steel.the truth is not the same as the same bending force bending sectional steel pipe, high-frequency welded H-beam has the characteristics of wide limbs thin frail members.
3.Process:
  Web uncoiling → pinch smoothing → shear butt welding → screw looper → edge trimming →pinch feeding → tension control →printing → twist 90^o(upper flange uncoiling → pinch smoothing →shear butt weld → screw looper) (Lower flange uncoiling → pinch leveling → shear butt welding → screw looper)→ double pinch feeding → tension control → double pinch feeding→ web upsetting → high frequency welding → weld cleaning → cooling → H steel length counting → straightening → drawing → length cutting → conveying → stacking → bundling → storage → delivery