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40
PART 3. WELDING PROCESSES & EQUIPMENT
Lead-in
1 There are processes similar to welding which a welder should know
about. Read the definitions of metal joining processes (1-6) and supply them
with Russian equivalents from the list (a-f).
a) резка
b) пайка мягким (легкоплавким) припоем
c) свинцевание
d) клепка
e) лужение
f) пайка твердым припоем резка
1. Soldering: Bonding by melting a soft metal to the surface of pieces to be
joined. Low temperature. Good for joining dissimilar materials. Most
common solders are lead-tin alloys.
2. Tinning: A soldering process, where the surface of a metal is coated with
solder.
3. Leading: A form of soldering, solder is used to fill in the surface of metal.
4. Brazing: Similar to soldering, but uses a higher temperature to fuse the
filler metal to the work pieces. Stronger bond. (Includes "Silver Soldering")
Work heated to pre-melt temperatures.
5. Cutting: Work is heated to melting point and beyond, and "cut" by
oxidizing metal. (Literally burning it away).
6. Riveting: A process of fastening with a rivet which is a heavy pin having a
head at one end and the other end being hammered flat after being passed
through holes in the pieces that are fastened together.
2 Remember the definition of welding and say what the main difference
between welding and related metal joining processes is.
Reading 1
3 You will read the text Basic Principles of Welding.
Before you read list all the ways of generating heat for welding.
Ways of Generating Heat for Welding
1. Electric arc
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