Introduction process explained by iit varansi proff

intro to me251, iit varanasi

1. ME251: Manufacturing Technology By: Dr. Pawan Sharma Assistant Professor, IIT BHU 1

2. Sylla b us Unit 1 :Introduction to Manufacturing Unit 2 : Foundry: Fundamentals of Metal casting, Types of casting, Special casting methods, Casting design considerations, casting defects, Moulding machines, Cleaning and conditioning of casting, Melting furnaces, Foundry mechanization. Unit 3 : Welding Processes: Advanced welding processes and applications, Welding defects, inspections and testing, Design considerations. Unit 4 : P owd e r Me t al F or m in g : P o w d e r pr o duc t i on and p r ope r t i e s , Co m pact i on a n d sin t er i ng, Applications. Unit 5 : B u lk D e for m a t i o n P r o c e ss e s: F unda m enta l s o f m e t al f o r m ing, R o l l i ng, F o r g i ng, Ex t r us i on, Drawing and applications. 2

3. Books Recommended Title: DeGarmo, Materials and Processes in Manufacturing” Author: J T Black and Ronald R. Koheser Title: Manufacturing Engineering and Processes for Engineering Materials, Author: Serope Kalpakjian and Steven R Schmidt Title: Fundamentals of Modern Manufacturing Materials, Processes, and SystemsAuthor: Mikell P. Groover Title: Manufacturing Technology Vol. 1: Foundry, Forming and Welding Vol. 1 Author: P N Rao Title: Manufacturing Science Author: Amitabh Ghosh and A K Mallick 3

4. What is Manufacturing? The word manufacture is derived from two Latin words, manus (hand) and factus (make); the combination means made by hand. (a) (b) Figure: Two ways to define manufacturing: (a) as a technical process, and (b) as an economic process. 4

5. History of Manufacturing 5

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7. 7 Source : J.A. Schey, C.S. Smith, R.F. Tylecote, T.K. Derry, T.I. Williams, S.R. Schmid, and S. Kalpakjian.

8. Materials in Manufacturing Most engineering materials can be classified into one of three basic categories: (1) metals, ceramics, and polymers. The i r c h e m ist r ies are di f f eren t , t h eir m e c han i c a l and physi ca l properties are different, and these differences affect the manufacturing processes that can be used to produce products from them. In addition to the three basic categories, there are (4) co m po s ite s —nonho m ogeneous m ix t ure s of the o t h er three b asic types rather than a unique category. 8

9. Manufacturing Processes A manufacturing process is a designed procedure that results in physical and/or chemical changes to a starting work material with the intention of increasing the value of that material. Manufacturing operations can be divided into two basic types: processing operations and assembly operations 9

10. Figure: The five materials processing families, with subgroups and typical processes. Manufacturing Processes 10 → Tool is always harder than job. → Direct contact b/w tool and job is required. → Tool can be both harder or softer than job. → Direct contact b/w tool and job is not necessary.

11. Thanks 11