Manu İmalat yöntemleri, Lecture notes of Engineering Dynamics

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MANUFACTURING PROCESSES II

INTRODUCTION

TERM SCHEDULE

WEEKLY SUBJECTS AND RELATED PREPARATION STUDIES WEEKS COURSE OUTLINE^ Related Preparation 1 TRADITIONAL AND MODERN MANUFACTURING TECHNOLOGIES AND GENERAL CONCEPTS Lecture Notes Part 1 2 PROCESS CHARACTERISTICS IN CASTING METHODS, DEFECTS AND TROUBLESHOOTINGS Lecture Notes Part 2 3 PROCESSES AND COST ESTIMATIONS IN CASTING^ Lecture Notes Part^3 4 PROCESS CHARACTERISTICS IN FORMING METHODS, DEFECTS AND TROUBLESHOOTINGS Lecture Notes Part 4 5 PROCESS AND COST ESTIMATIONS IN FORMING^ Lecture Notes Part 5 6 PROCESS CHARACTERISTICS IN MACHINING METHODS, DEFECTS AND TROUBLESHOOTINGS Lecture Notes Part 6 7 PROCESS AND COST ESTIMATIONS IN MACHINING Lecture Notes Part 7 8 I. MIDTERM EXAM 9 PROCESS CHARACTERISTICS IN JOINING METHODS, DEFECTS AND TROUBLESHOOTINGS Lecture Notes Part 8 10 APPLICATIONS, PROCESSES AND COST ESTIMATIONS IN JOINING Lecture Notes Part 9 11 POWDER METALLURGY AND PROCESS CHARACTERISTICS Lecture Notes Part 10 12 MICROMANUFACTURING, NANOMANUFACTURING, HYBRID MANUFACTURING / II. MIDTERM EXAM Lecture Notes Part 11 13 ELECTROEROSION, WATERJET, LASER CUTTING AS MODERN MANUFACTURING METHODS Lecture Notes Part 12 14 MANUFACTURING OF MICRO ELECTROMECHANIC SYSTEMS, LITHOGRAPHYC METHODS, ADDITIVE MANUFACTURING Lecture Notes Part 13 15 FINAL EXAM

Course Learning Outcomes

**1. To obtain required knowledge in mathematics, physics and engineering topics related to mechanical engineering field, and ability to apply the theoretical and practical knowledge for modeling and solving the engineering problems.

2. To obtain the determining, defining, formulizing and solving skills of complicated engineering problems. In this context, gaining the knowledge to determine and to apply the proper analyzing and modeling methods in related to mechanical engineering for solving these problems.
3. To gain designing ability of complicated systems, process, appliances or products which qualify pre-determined requirements under certain conditions and/or constraints in the field of mechanical engineering and the skill of implementing modern design techniques.
4. To obtain the skill of improving, selecting and implementing of required modern techniques and tools for mechanical engineering applications, and using informatics related technologies.**

EVALUATION SYSTEM

One homework (10%)

Midterm exam (25%)

4 Quizzes (25%)

Final exam (40%)

Manufacturing Processes

Part production as a technical operations

INTRODUCTION

Economical point of view:

MANUFACTURING

It is the transformation of materials into items of

greater value by means of one or more processing

and/or assembly operations by adding value to the

material by application of any operations (cutting,

plating, assembling etc.)

Manufacturing Processes

The words manufacturing and production are

often used interchangeably.

PRODUCTION HAS A BROADER MEANING.

MANUFACTURING CONTAINS LIMITATIONS.

Manufacturing Processes

Manufacturing Processes

A manufacturing process is usually carried out as a unit

operation, which means that it is a single step in the sequence

of steps required to transform the starting material into a final

product.

Manufacturing operations can be divided into two

basic types:

1. PROCESSING OPERATIONS

2. ASSEMBLY OPERATIONS

Manufacturing Processes

Processing operations

A processing operation transforms a work material from one state of completion to a more advanced state that is closer to the final desired product. It adds value by changing the geometry, properties, or appearance of the starting material. In general, processing operations are performed on discrete components (e.g., painting a spot-welded car body).

Assembly operations

An assembly operation joins two or more components to create a new entity, called an assembly, subassembly, or some other term that refers to the joining process (e.g., a welded assembly is called a weldment).

Manufacturing Processes

Traditional and Modern Manfacturing What has been changed from traditional to modern manfacturing?

Manufacturing Processes

Shaping operations

They alter the geometry of the starting work material by various methods. Common shaping processes include casting, forging, and machining.

Property-enhancing operations

They add value to the material by improving its physical properties without changing its shape. Heat treatment is the most common example.

Surface processing operations

They are performed to clean, treat, coat, or deposit material onto the exterior surface of the work. Common examples of coating are plating and painting.

Manufacturing Processes

Shaping operations

Most shape processing operations apply heat, mechanical force, or a combination of these to effect a change in geometry of the work material. There are various ways to classify the shaping processes.

1. Solidification processes (the starting material is a heated liquid or semifluid that cools and solidifies to form the part geometry) CASTING
2. Particulate processing (the starting material is a powder, the powders are formed and heated into the desired geometry) POWDER TECHNOLOGY
3. Deformation processes (the starting material is a ductile solid - commonly metal- that is deformed to shape the part) FORMING
4. Material removal processes (the starting material is a solid - ductile or brittle-, from which material is removed so that the resulting part has the desired geometry) MACHINING 5 - Non-traditional / Modern Manufacturing such as water jet, electrical discharge machining, plasma cutting, dieless tooling etc.