LESSON ASSIGNMENT
Ordnance Subcourse No 017...............
Supporting Services
Lesson 3................................
Introduction to Welding, Cutting,
Brazing, and Soldering
Lesson Objective........................
After studying this lesson you will be
able to:
1.
Describe the procedures for
setting up oxyacetylene welding
equipment to include flame
adjustments.
2.
Explain oxyacetylene cutting
operations of mild steel.
3.
Describe oxyacetylene brazing
operations.
4.
Describe soldering operations to
include safety procedures.
Text....................................
Attached Memorandum
Materials Required......................
Response list and answer sheet
Suggestions.............................
Study illustrations as the text is
read. If possible, visit a maintenance
shop where welding, cutting, brazing,
and soldering equipment is available
and observe the actual operations.
ATTACHED MEMORANDUM
SECTION I.
GENERAL
1.
INTRODUCTION.
a. The use of a welding torch in metalworking is by no means a new thing. A
crude form of welding torch was used by the Ancient Egyptians, Greeks, and Romans
to work on precious metals. The flame came from alcohol and other fluids.
Although acetylene was discovered as early as 1836, it was not widely used, except
in laboratories, until 1892 when a method of producing calcium carbide was
discovered. The year 1903 marks the beginning of the oxyacetylene process for
general welding and cutting.
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