Without sliding and rolling, the circumference of a 6 cm circle is several times that of a 1 cm circle, and the small iron ring turns several times.

The formula for finding the perimeter is: 3.142 * d.

Then 3.142 * 6/3.142 *1= 6.

The answer is that 1 cm circular iron rolls around a circle with a diameter of 6 cm without sliding, and the small iron ring turns six times.