This step is very crucial in every SPC. It ensures that the process of the company uses steel rods that are of constant variation within the limits specifications of the company in the production of the hydraulic products. The formula used is: Cp= T / 6? Where Cp = Process Capability, T= Upper Specification Limits- Lower Specification Limits ? = variation of the process The readings of samples of the steel rods were taken on a daily basis for up to 25 days in order to determine the diameter and the surface errors of the steel rods that were used.
Then a histogram is drawn using the values given and because the distribution is ...
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...not normal we can conclude that there is no process capability. It was therefore recommended that the company should develop mechanisms that would help to understand the geometric tolerance of the steel rods that were used to make the hydraulic products.
Different types of steel rods have got different geometric tolerance depending on the diameter that is used and the shape of the steel rods used such as round, flat, parallel, e. t. c. this will enable the company to make hydraulic pumps using the steel rods that are of high quality thus reducing the rate of rejection of the steel rods. Conclusion The above report shows how the rate of rejection of the company’s hydraulic products can be minimized by assessing the size and the quality of the steel rods that are used to make the products. This helps the company to make high quality products that are acceptable to the customers. The methodology that is used is the 7QC tools and the SPC techniques that help to determine whether there are any deviations in the specifications of the steel rods that were used.
References Dornman and Dan. (1977). An Invitation for Dinging, Disco-Dancing… and the SEC. New York, May 9, 1977, p. 12 to 13. Hoerr and John, P. (1988). And the wolf finally came: The Decline of the American Steel Industry. Pittsburgh: University of Pittsburgh Press. Hogan and William, T. (1983). World Steel in the 1980s: A Case of Survival. Lexington, Massachusetts: Lexington Books. Scheuerman and William. (1986). The Steel Crisis: The Economics and Politics of a Declining Industry. New York: Praeger Publishers.