Objectives

In this course, the student must identify and recognize basic Mechanical parts in rotating machines, to identify also machining operations and machine tools, and basic elements of welding process.

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Content

Part 1: Mechanical parts of rotating machinery

I- Machine Elements used for holding/support the components :

1- Shaft/Axle

2- Screw

3– Support Washer

4– Nut

5– Pins

6– Studs

7– Circlips

8– keys

9– Bearings

II- Machine elements used for transmitting the power :

1. Transmission of motion

1.1 Pulleys and Belts

1.2. Sprockets and Chains

2. Transmission without transformation of movement and without modification of angular speed

2.1. Coupling and Torque limiters

2.2. Clutches and Brakes

3. Transmission without transformation of movement with modification of angular speed

3.1. Gears and Gear trains

4. Transmission with transformation of movements

4.1. From rotation in continuous translation

4.1.1 Rack and Pinion System

4.1.2 Screw-Nut System

4.2. Rotation in alternating translation

4.2.1 Connecting Rod-Crank System

4.3. Intermittent translation rotation

4.3.1 The Cams

III- Reading a general drawing ((Representation of usual shapes)

Part 2: MACHINING OPERATIONS AND MACHINE TOOLS

1.Machining as a Process

2.Turning or Lathe Machining

3.Drilling and Drilling Machinery

4.Milling and Milling Machines / Broaching & Filing

5.Machinability

6.Selection of Cutting Conditions

7.CNC Machine Centres

Part III: Course Plan: WELDING

I/ HISTORY OF WELDING

II/ BASIC ELEMENTS OF WELDING PROCESS

III/ Plastic (or) Pressure Welding:

III.1. Resistance Welding:

III.2. Solid State Welding Processes

§Forge welding

§Cold welding

§Roll welding

§Explosion welding

§Friction welding

§Ultrasonic welding

IV. Fusion Welding:

IV.1. GAS WELDING

IV1.2. OXY –ACETELYNE GAS WELDING

IV.2. ARC WELDING

IV.2.1. ARC WELDING Consumable Electrode (AW Processes )

•Shielded Metal Arc Welding (SMAW)

•Gas Metal Arc Welding (GMAW) or MIG

•Flux-Cored Arc Welding (FCAW)

•ElectrogasWelding

•Submerged Arc Welding (SAW)

IV.2.2.ARC WELDING –NONCONSUMABLE ELECTRODES Processes

•GTAW (Gas tungsten arc welding) or TIG welding

•Plasma arc welding

V. Inspection and Testing Methods

VI. Weldability

VII. Design Considerations in Welding

VIII. WELDING DEFECTS