Inclusions in Aluminum-Alloy Sand Castings

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. In regard to hard spots in aluminum-alloy castings, our experience with this trouble is that it usually comes from using remelted aluminum which has been run down from borings, where the iron content has not been el...