Management of Efficiency of Technological Process of Manufacturing of the Valve on the Basis of the Accuracy Estimation Statistical Methods

Abstract

Results of research and control of efficiency of process of production of technologically difficult, high-precision valves are given. Strict requirements are imposed to these products, as to the products applied in oil and gas extraction complexes, repair and welding units in researches of wells and units on the basis of all-wheel drive wheel and caterpillar chassis. Results of identification of critical technological operations of production of valves are given. Results of an assessment of technological accuracy of processes by statistical methods: control leaves, histograms, Isikava's charts, Pareto's charts, ABC analysis are reflected. Analysis of accuracy of operations by method of dot charts, calculation of statistical parameters: index of reproducibility, indicator of working capacity, indicator of centrality, level of deficiency allowed to reduce deficiency level, to increase production accuracy, to lower a roughness of the processed surface, to reduce operational expenses at finishing grinding. Process “A periodic assessment of accuracy of technological operations” is developed (described, visualized and estimated), the standard of the organization on this process is created and introduced. Results of the executed research project allow to support constantly requirements of technological process of production of valves in the condition, which guarantees production of the established level of quality.