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Hydraulic Technician Course in Islamabad

Hydraulic Technician Course in Islamabad

Introduction:
The Basic Hydraulics training course covers hydraulic principles of mechanical maintenance, types of hydraulic fluids and their characteristics. Describes components of the hydraulic system and their functions for maintenance procedures, including filters and strainers, reservoirs and accumulators, pumps, piping, tubing and hoses, control valves, relief valves, and actuating devices. This hydraulics course overs a variety of cylinders and training on hydraulic motors.

Course Outline:
Lesson 1 – Principles of Hydraulics
Topics:
Force, weight, mass, pressure, work, power, and energy; Incompressibility; Nondiffusion; Hydrostatic pressure; Pascal’s Law; Fluid power transmission; Bernoulli’s principle

Learning Objectives:
– Explain the difference between absolute and gauge pressure.
– Demonstrate how power is calculated.
– Explain Pascal’s Law.
– Describe the difference between laminar and turbulent flow.
– Name the main components of a hydraulic system.

Lesson 2 – Hydraulic Fluids
Topics:
Viscosity; Pour point; Fluid selection; Chemical properties; System contamination; Dissolved air; Foaming; Corrosion and rusting

Learning Objectives:
– List the most important properties of hydraulic fluids.
– Explain how viscosity is measured.
– Explain the meaning of the viscosity index.
– Describe the effect of fluid temperature on viscosity.
– Name the causes of corrosion and fluid oxidation.
– Identify various types of hydraulic fluids.

Lesson 3 – Strainers and Filters
Topics:
Contaminant removal; Strainer performance; Types of strainers; Fibrous and nonfibrous filter media; Magnetic media; Installation

Learning Objectives:
– Name contaminants found in hydraulic systems.
– Explain the difference between a strainer and a filter, and describe the main function of each.
– Describe the two basic types of filter/strainer media.
– Draw graphic symbols for strainers and filters.

Lesson 4 – Reservoirs and Accumulators
Topics:
Reservoir, air separation requirements; Baffles; Reservoir cooling methods and accessories; Accumulators; Schematic symbols

Learning Objectives:
– Explain the functions of fluid reservoirs.
– Explain the purpose of reservoir baffles.
– Describe various methods of counteracting high operating temperatures.
– Identify important accessories used with reservoirs.
– Demonstrate pressure ratio calculation for a differential-piston accumulator.

Lesson 5 – Hydraulic Pumps
Topics:
Pump varieties, functions, and selection; Gear, screw, cycloidal, vane, axial-piston, and radial-piston pumps

Learning Objectives:
– Name the main classification of hydraulic pumps.
– List factors affecting pump selection and pump performance.
– Define volumetric efficiency and overall efficiency.
– Identify the most common types of positive-displacement pumps, and describe their operation.

Lesson 6 – Piping, Tubing, and Fittings
Topics:
Fluid flow and velocity; Hydraulic pressure; Pressure loss; Steel pipe and fittings; Tubing and tube bending; Hoses; Hose fittings and couplings

Learning Objectives:
– Discuss the chief considerations in hydraulic line selection.
– Demonstrate how flow velocity and pressure loss are calculated.
– Explain pipe size schedules.
– Describe various types of fittings used in hydraulic systems.
– Explain the reason for using steel pipe.
– List the main advantages of tubing.

Lesson 7 – Directional Control Valves
Topics:
Valve classification; Automatic, two-way, check, pilot-operated, and spool valves; Hydraulic motors; NO, NC, holding valves; Symbols; Flow ratings

 

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