The sandwich rolling of thin hard strip

  • A.A. Afonja

Student thesis: Doctoral ThesisDoctor of Philosophy


The fact that the clad is discarded usually in practice makes the sandwich rolling process economically unattractive except for the production of thin sheets of very expensive metals. It is desirable therefore that the clad material should be cheap and easily recoverable. Plastic appears to satisfy these requirements and the possibility of using it as a clad was briefly considered.

It was concluded that a considerable reduction in the roll force and torque can be achieved by carefully selecting the process parameters, the most significant being the clad-sandwich thickness ratio, the clad-matrix hardness ratio, and the frictional conditions at the clad-matrix interface. The results of experiments involving the use of plastic clads were encouraging and further work is necessary in this direction.
Date of AwardOct 1969
Original languageEnglish


  • sandwich rolling
  • hard strip

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