Plasma Cutting

2233 words, 9 pages

Intro Sample...


CONTENTS

Title 1
Objectives 2
Introduction 4
Apparatus 5
Experimental procedure 7
Result and Data Analysis 10
Discussion of Results 11
Conclusions 13
Recommendations 14
References 15

1.0 TITLE

Plasma Arc Cutting

2.0 OBJECTIVES

* Define plasma cutting.
* Explain how air plasma cutting torch works.
* Explain how the flame cutting process works.
* Describe basic plasma cutting safety.
* Explain the air plasma cutting procedure.
* List the advantage and disadvantages of using a air plasma cutting torch

3.0 INTRODUCTIONS

Plasma is an ionized gas that conducts electricity. Plasma is created by adding... View More »

Body Sample...


This pilot arc creates a path for the main arc to transfer to the work. Because DC current alone is not sufficient to initiate and maintain the pilot arc, high frequency is superimposed on the direct current. DC power is also used for the main cutting arc. The negative output is connected to the torch electrode through the torch lead. The positive output is connected to the workpiece via the work cable and to the torch through a contactor and resistor.

4.0 APPARATUS

* Plasma Cutter
2
1

32
4

1) Power supply
2) Control panel
3) Cutting torch
4) Earth clamp

Material | Thickness,mm | Gas | Current, A | Speed, mm/min |
Mild steel | ? 10 | Compress air | 90 | ?800 |
* Specifications

* Workpiece dimensions

100 mm
150 mm
4.1 OTHERS APPARATUS

* CNC Plasma Cutter

-A specialized use of CNC Plasma Cutters has been in the HVAC industry. Software will process information on ductwork and create flat patterns to be cut on the cutting table by the plasma torch.

5.0 EXPERIMENTAL PROCEDURES
* Install &
Connect
Equipment
Put On Personal
Safety
Equipment
Check Torch Tip,
Electrode, And
Retaining Cup
Check Gas/Air
Pressure
Set
Controls
Sequence of Operation

Turn On
Power Source
Begin
Cutting

* Cutting Operation
1) To begin cutting, place the tip of the torch on the work for drag cutting or from 1.5 mm to 3 mm form work for standoff cutting (Note: standoff cutting will increase the consumables life and allow for faster cutting speeds).

2) When starting at the edge of a piece of work, start ...

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