The Study of Computerized Problem in Large Steel Industry (Case Study: the Utilization of Computer Controlled Proportional and Servo Valves in Hydraulics System)

Abstract

The objectives of this research were to study and to compare computer problems for proportionaland servo valves controlling in hydraulic system in production process of large steel industry with those indifferent production processes. The research emphasized on staff, policy and administrators, processing ofthe machines, proportional and servo valves, PLC system in production process and machine manufacturers.The populations being studied were 105 persons selected from people who were responsible formachine computerization in production process. A questionnaire was used as a tool in the study. Data wereanalyzed by Percentage, Means and Standard Deviation. The findings were as follows: For the staff, it wasgreater than 40 percent of the problem level, according to inadequate staff for task which to be the fairlylevel problem (Mean = 3.18). For the policy and the administrators, it was greater than 30 percent of theproblem level, according to cost reduction by doing not hire staff who had great knowledge and experiencewhich to be the fairly level problem (Mean = 2.78). For the processing of the machines, it was greater then25 percent of the problem level, according to incorrect control effected by environment which to be thefairly level problem (Mean = 2.84). For the proportional and servo valves, it was greater then 50 percent ofthe problem level, since they were not endurable in conditions of the factory which to be the fairly levelproblem (Mean = 3.19). For the PLC system in the production process, it was greater then 50 percent of theproblem level, since cables were damaged which to be the fairly level problem (Mean = 3.46). For themachine manufacturers, it was greater then 25 percent of the problem level, since staff were not trainedfrom manufacturers of machines which to be the fairly level problem (Mean = 3.07). By comparison withthe levels of problems, the findings showed that the different production processes had different levels ofproblems for each aspect, except for the PLC system in the production process which had no differentlevels of problems because it showed only a least level.