An X-ray thickness gauge for the measurement of hot-rolled strip steel

The increased demand for close control of rolling tolerances in hot or cold strip and sheet mills has led to the development of special X-ray thickness measuring equipment. It functions by measuring the absorption of X-rays in the material, and, from the results thus obtained, highly accurate deductions can be made regarding the thickness of the strip. A description of the radiation source, differential detection equipment and reference wedges is given.