Airbag

Jansen produces welded precision steel tubes made of high-tensile materials for airbags. The applications in this area of the auto- motive industry are very sensitive in terms of quality. The quality of the tubes is guaranteed by excellent raw material quality, a very stable welding process in conjunction with comprehensive seam quality testing as well as stringent production and dimensional tolerances. Tubes produced in this way withstand maximum stress when airbags are deployed. Dismantling into several pieces is not permissible (low-temperature impact resistance).

Tube requirements

  • Excellent formabillity
  • Low-temperature ductility
  • High burst-pressure resistance
  • Excellent welding properties
  • Excellent surface condition

Material properties

  • Optimised burst-pressure resistance
  • Very good ductility up to -60°C
  • Homogeneous strength and elongation
  • Very good reforming properties

Structure

  • Homogeneous, fine-grain structure in weld seam and basic material
  • Very good weld seam quality
  • Excellent reforming properties

Geometry

  • Minimised fluctuations in wall thickness and inner/outer diameter
  • Minimised deviations in concentricity and axial run-out
  • Minimised eccentricity
  • Specific tube end processing: sawn/brushed; chamfered

Surface

  • Excellent surface condition
  • Minimised surface flaws (adhesions, scratches, dents, etc.)
  • Minimised corrosion protection, optionally specific corrosion protection
Airbag