Important Features of Rolling of Wire Rods Mar27

Important Features of Rolling of Wire Rods...

Important Features of Rolling of Wire Rods Wire rods are normally rolled in a high speed rolling mill, where steel temperature is above 1,000 deg C, maximum speed of rolling exceeds 120 metres per second (m/s) and coils of wire rod produced can be upto 10 kilometers (km) long. During rolling of wire rods, usually 25 passes to 30 passes are taken in a continuous rolling mill. Wire rod is a material which has a very wide application. From components for the automotive industry, tire cord, electrodes, connecting elements such as nuts and bolts, springs, wire and wire products, steel reinforcements, and so on, everything is based on wire rod. That is why wire rod mill is normally designed with versatility in mind. The mill being an energy intensive mill, it becomes necessary that the optimum solutions are incorporated in the mill design without compromising on the flexibility. All size ranges, materials and alloys need to be produced efficiently and with high productivity in the wire rod mill. Wire rods are required to meet the wire rod users’ requirements of surface and internal quality as well as physical, chemical, mechanical, and metallurgical properties. Wire rods undergo post-processing such as drawing, forging, or machining into desired shapes and heat treatment for enabling the product to achieve the desired strength. Thus, the wire rods are required to be capable of ensuring good performance of the produced parts wherever they are used, and at the same time, to have good workability at different stages of the post-processing. The user of wire rods has three basic requirements namely (i) to eliminate or simplify one or more of the secondary or tertiary processing to improve productivity and reduce processing cost, (ii) to improve the functionality, i.e. to extend the...

Standards and their importance for the Organizations...

Standards and their importance for the Organizations The modern and globalized world cannot exist without standards which are sup­porting cooperation, trade, health, safety, and economic growth etc. In fact, standards exist in almost all aspects of modern life. They range from standards in information and communication technology which ensure the interoperability of diverse components to standards for the quality of products or services, and underlie areas ranging from the harmonization of international accounting systems to the governance of the social and environmental performance of the organizations. Stand­ards have a huge influence on everyday life. They play a key role in an environment where an organization is to be at its best for achieving success. They are open access documents with no charge or license fee for their use, apart from the cost of its purchase. The development of standardization as an engineering activity was pioneered by Eli Whitney, who in 1793 invented the cotton gin, a machine for separating cotton fibres from their seeds. Whitney later introduced the production of interchangeable components for the manufacture of guns. Standardization of screw threads by Sir Joseph Whitworth dates back to 1841. Other instances of early standardization can be found in the dawning age of the railway industry, as the establishment of a standard width between the two rails on the railway track, the manufacture of railway couplings, air brakes and the signaling system called for increasing levels of standardized work. But major impetus to the development of standards came around the turn of the 20th century, when a large number of national standardization organizations were founded, including organizations that are nowadays known as the British Standards Institution (BSI) and the American National Standards Institute (ANSI). Their purpose was to create sets of rules for the design...

Project Management in for a Steel Project...

Project Management in for a Steel Project Project consists of a group of tasks, performed in a definable time period, in order to meet a specific set of objectives. It is a temporary activity. It is a one-time program hence different from operations where tasks are repeated in a routine way. Every project has a life cycle, with a specific start and end. The work scope of a project can be categorized into definable tasks. Project has a budget within which it is required to be completed. During the execution of the project, there is likely requirement of multiple resources. Many of these resources can be scarce and may have to be shared with others. Steel project like any other project has a life cycle (Fig 1) which includes (i) initiation, (ii) planning, (iii) execution, (iv) monitoring and control, (v) commissioning and handing over, and (vi) closing of the project activities. Fig 1 Project life cycle Steel project has four components namely (i) performance, (ii) cost, (iii) time, and (iv) scope. All these four components are interrelated and dependent on each other. Performance is the quality of the work being done. Cost is the expenditure made on the project work and is directly related to the human and physical resources applied. Time is the schedule which is required to be met for completing the work. Scope is the magnitude of the work to be performed. One of the key ingredients for successful project management in a steel project is having the right people on the job and managing them appropriately. Both of the two elements ‘having the right people’ and ‘managing people appropriately’ are important for the project success. However, in practice both conditions are frequently violated. There are several groups of activities 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...

Quality of Products and Process Control...

Quality of Products and Process Control A product is said to be of desired quality when it complies with the specification as well as customer’s requirements and expectations and when it displays basic, performance and excitement functionalities. Products are produced by manufacturing processes. Also, quality cannot be tested into the product. It is to be built in the product by the manufacturing process during its manufacturing. One of the main factors which affect the quality of the product is the quality of the manufacturing process which produces the product. Sound and reliable processes produce quality products. Hence improving the quality of the manufacturing processes is a precondition for better product quality at an acceptable cost. Process as used in the terms process control and process industry, refers to the methods of changing or refining raw materials to create end products. Process control refers to the methods that are used to control process variables when manufacturing a product. Organization controls the production process for three reasons namely (i) reduce variability, (ii) increase efficiency, and (iii) ensure safety. Process control can reduce variability in the end product, which ensures a consistently high-quality product. Manufacturing processes have the many features which fall into one of the following categories Procedures – These are a series of steps followed in a regular, definite order. Methods – These are an orderly arrangement of a series of tasks, activities, or procedures. Equipment and supplies – These are physical devices and other hard goods which are needed to perform the process Materials – These are tangible elements, data, facts, figures, or information needed which along with equipment and supplies make up inputs required. People – They are numbers of individuals, skills they require, goals, and tasks they perform. Training – It is...