1. INTRODUCTION F riction surfacing (FS) is a solid state coating process based on the plastic deformation of a metallic consumable rod. As depicted in a rotating rod is pressed against the substrate under an applied axial load. Frictional heat generates a viscoplastic boundary layer at the rod tip. The pressure and temperature conditions lead to an inter diffusion process resulting in a metallic bond between the plasticized material and the substrate. Heat conduction into the substrate enables this
MIG: uses arc and a consumable wire electrode of a compatible metal into the weld pool. TIG: uses arc and a non-consumable tungsten tip cooled by the inert gas shield Q22: Prepregs? Answer: Fiber reinforcements that are pre-saturated with resins are called prepregs. Aircraft, automotive, and military markets have relied on prepregs. Prepregs enable manufacturers
1.4 POWDER METALLURGY PART PROCESSING P/M process generally consists of four basic steps: (1) Powder manufacturing (2) Powder mixing and blending (3) Compacting and (4) Sintering. Compacting is generally performed at room temperature and the elevated-temperature process of sintering is usually conducted at atmospheric pressure. According to Narayanasamy et al. (2009), compaction process generates green strength of compacts by two phenomena, namely (i) particle sliding and interlocking (ii)
Different Cutting Processes: Cutting is a machining process that makes parts through the use of a single- or multi-point tool and machine tools. It also turns raw materials into finished parts [15]. Cutting processes have very good accuracy. It produces unique parts that no other metal processes can produce and is perfect for any batch size, thus making the processes economical [15]. Cutting processes, however, create a large amount of waste and if it is not done correctly, parts and tools may be
Resources Anything that has a value can be used to fulfill our needs, this is called resources. Resources are evolved with time and technology. Peoples are the most important resource because without their knowledge and discoveries, things cannot turn into a resource. TYPES OF RESOURCES Resources can be classified into natural, human made and human. Natural Resources Resources that are directly extracted from the nature are called natural resources. For example Air, water, soils, minerals are all
surrounded by fuel (charcoal, coal or coke) and accelerated by the addition of forced air. Two of the biggest changes in technology were making the furnace cylindrical and having the forced air come in from the bottom. This furnace is used for melting non ferrous metals in small quantity. This furnace is placed above the floor level. The crucible is placed in the heating chamber. The heating chamber is lined with refractories. Coke is used as fuel. Forced draft is used. A blower is used for supply of
INFORMATION TECHNOLOGY MANAGEMENT RESEARCH ASSIGNMENT QUESTION:- Surf the Internet for information about airport security via bomb-detecting devices. Examine the available products, and comment on the IT techniques used. ANSWER:- INTRODUCTION Air travel is the most common means of travel used these days and thus that is the reason it becomes a soft target for terrorism and other
Unit 17: Industrial Policies LEARNING OBJECTIVE: Understand the concept, meaning, features and objectives of Industrial Policy Appreciate the Industrial Policy Revolution, 1948 and 1956 Comprehend the changes in Industrial Policies, post 1956 period Understand the New Industrial Policy, 1991 Comprehend the impact of New Industrial Policy, 1991 on Indian Economy Appreciate New Small Sector Policy, 1991 Understand the definition of Micro, Small and Medium Enterprises. Appreciate the