The company „Steel Construction Stassfurt“  built nine of the AUDI demonstration hangars designed by AUDI-Masterplanning.Visible steel construction parts required highest quality standards and advanced  surface technology .The last  hangar  out of a complete line type A and B was constructed in autumn 2000 for the car dealer Mulfinger in Heilbronn, Germany. The trusses are up to 40 m long.  The main part of the steel construction consists of tubes of quality S355JO which are sandblasted before welding.  Welding work was with  difficult multiple nodes and lack of accessability particularly demanding. A welding wire type EMK6 from Böhler and mixed gas M21 from Linde were used. No welding spatters were allowed  on the  visible parts of the steel construction and  advanced surface technology had to be applied. Steel construction Stassfurt used for the construction of the last AUDI demonstration hangar for the first time the METALLOTION PROTEC CE15L, an innovative, biological anti-spatter liquid. Time spent on construction was substantially reduced by using this product. Due to PROTEC CE15L’ s outstanding anti-spatter effect welding spatters are wiped-off easily with a glove. No extra cleaning work has to be carried out. PROTEC may be overpainted without any problem. As a subsequence no second sandblasting of construction parts is  necessary,  simple coating with 2K EP paint from Permatex is sufficient.  There is no risk of poor adhesion. Of particular note is that  the same work hours are saved on hot galvanized construction parts by using METALLOTION. Contrary to ordinary anti-spatter liquids PROTEC ensures that no problems with wetting or  spots on zinc surface occur.

Conclusion: The use of METALLOTION enables construction of  welded steel girders fullfilling  high quality standards concerning surface and coating whilst  guaranteeing process safety at the same time. Savings of more than EUR 130 were  achieved by cost of sales of EUR 5.000.   
      


Ingo Brüggemann,
Managing Director of Steel Construction Stassfurt
Neustassfurt
D-39418 Stassfurt o.T.