Abstract: Provided is a cast iron material from which excellent friction characteristics can be obtained. Provided is the cast iron material containing C and Fe as a composition, and further containing Cr as the composition in 1.0 to 3.5% in terms of mass %. The cast iron material is used in a sliding component sliding under an environment of lubricating oil to which an additive containing Mo as a constituent element, such as MoDTC, is added. Cr contained in the cast iron material promotes a decomposition reaction of the additive containing Mo added to the lubricating oil to form a film of molybdenum disulfide, the film having low friction. Thus, the fiction can be reduced.

Abstract: Disclosed is an automatic program forming apparatus which automatically forms a part program for extracting the contour measurement position of a measurement object and the measurement condition data from two-dimensional CAD graphic information, and for calculating the XYZ coordinates of the approach position, entering position, etc. of a probe of a three-dimensional contour measurement device at the time of the contour measurement on the basis of the extracted contour measurement position and measurement condition data to thereby control the three-dimensional contour measurement device; and which automatically forms a test program for simulating the measurement operation of the part program in advance.