Safety in Rolling Mills...

Safety in Rolling Mills Worldwide, as the rolling speeds are increasing, greater emphasis is being placed on the aspects of safety while designing the mill equipment as well as during the finalization of the mill layouts. Providing high importance to safety is in the best interest of the designers, manufacturers and the users of the rolling mills. Safeguarding of the mill equipment is necessary for ensuring the safe working of the rolling mill after its commissioning. Manufacturers of the rolling mills have the objective to produce a competitive mill, while users desire to have a highly productive mill. However, before any of these objectives can be met, both the manufacturer and the user are to first determine how to engineer the mill using safe design principles to minimize operator’s risks. Investing in a safer workplace also reduces the expenses of treating injured workers, helps preventing workplace accidents besides boosting employees’ morale by conveying the message that the organization cares about its employees and wants to protect their health and safety. A brief overview of safety requirements for the equipment of rolling mill is given below. Common safety related definitions Safety is the ability of the equipment to perform its function while being transported, installed, adjusted, operated, maintained, dismantled, and disposed of under conditions of intended use specified in the instruction manual without causing injury or damage to health of the people carrying out these functions. Risk is a comprehensive estimate of the probability and the degree of the possible injury or damage to the health in a hazardous situation in order to select appropriate safety measures. Hazard is a condition or set of circumstances which can cause physical harm to the exposed personnel. Danger zone is any zone within or around the equipment in...

Product Quality and Manufacturing Technology Management...

Product Quality and Manufacturing Technology Management Manufacturing technology is defined as the act or process (or connected series of acts or processes) of actually and physically making a specified product from its material constituents. It is central to a production system which produces the specified product as required by the customer. Manufacturing process takes place when some input occurs in a production system and it appears as an output and provides result in the form of a product. On the other hand, manufacturing technology is that knowledge which is used in the production system during the process of manufacturing. Manufacturing technology is an interacting combination at any level of complexity, of people, materials, tools, machines, automation, software facilities, and procedures designed to work together for the common purpose of producing product of that quality which is needed by the customer. It provides the tools which enable production of the specified products.  These tools of the manufacturing technology magnify the efforts of individual workers and turn raw materials at the affordable cost into the quality products required by the customers The objectives of the manufacturing technology (Fig 1) are namely (i) low cost operation, (ii) high performance, (iii) consistent product quality, (iv) high productivity level, (v) high yield, and (vi) product customization. Fig 1 Objectives of manufacturing technologies There is a close link between the quality of the product and the manufacturing technology. An appropriate manufacturing technology is normally needed to produce product of quality since the technology is the principal quality determinant. In fact, manufacturing technology is to have capabilities to produce products of predictable quality at the productivity levels which keeps the product production cost under control. The technology needs not be unique, but it is to be mature and is to have innovative...