Bi-metal welding aluminum to steel

[grecla36]

We have new application where we will weld aluminum to steel using a bi-metal spacer. I am looking for suggestions (guidelines) on how to weld and fabricate using bi-metal. Is there any documentation on suggested practices for welding bi-metal?

 

[unclesyd]

They make Al to CS transition joints in the ship building industry for use when the have an Al superstructure on a steel hull. They still build commercial boats but I think the Navy has dropped this design.
These transition pieces were made by explosive welding.

Here is an article on welding dissembler metals you might want to read.

http://www.key-to-nonferrous.com/default.aspx?ID=CheckArticle&NM=152

Here is information on the DetaCouple made by Dynamic Materials.

http://www.dynamicmaterials.com/data/brochures/About Detacoule 2 pages.pdf

Here is list of the standards for some of the transition pieces.

http://www.dynamicmaterials.com/Div...ormation/Specifications For Transition Joints