Обучение разговорной речи и чтению литературы на английском языке по специальности «Сварка»

Московский государственный технический университет
имени Н. Э. Баумана

Г. Г. Гурова, Н. С. Николаева

Обучение разговорной речи и чтению
литературы на английском языке
по специальности «Сварка»

Учебно-методическое пособие

Москва
Издательство МГТУ им. Н. Э. Баумана
2010

УДК 808.0
ББК 81.2 Англ.-923
Г95

Гурова Г. Г.
Г95
Обучение разговорной речи и чтению литературы на английском
языке по специальности «Сварка» : учеб.-метод. пособие / Г. Г. Гурова, Н. С. Николаева. — М.: Изд-во МГТУ им. Н. Э. Баумана, 2010. —
54, [2] с. : ил.
В учебно-методическое пособие включены тексты из оригинальной
научно-технической английской и американской литературы по специальности «Оборудование и технология сварочного производства», предназначенные для аудиторной и самостоятельной работы студентов. В каждый
урок входят также задания по развитию навыков перевода с английского
языка на русский, ведения беседы по основным проблемам, затронутым
в пособии, переводу с русского языка на английский и отработке лексических и грамматических трудностей, встречающихся в текстах.
Для студентов старших курсов.

УДК 808.0
ББК 81.2 Англ.-923

c⃝ МГТУ им. Н. Э. Баумана, 2010

Предисловие

Учебно-методическое пособие состоит из трех разделов, в которых рассматриваются виды сварных соединений, их элементы
и характеристики. В пособие включены тексты из оригинальной
научно-технической английской и американской литературы по специальности «Оборудование и технология сварочного производства», предназначенные для аудиторной и самостоятельной работы
студентов. В каждый урок входят также задания по развитию навыков перевода с английского языка на русский, ведения беседы
по основным проблемам, затронутым в пособии, задания по переводу с русского языка на английский, отработке лексических
и грамматических трудностей, встречающихся в текстах.
Предназначено для студентов старших курсов машиностроительных специальностей, изучающих сварочные процессы.

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U n i t 1
Weld Joints. Parts of a Joint

Preview. In this unit you will study different types of weld
joints, ways of edge preparation and standard terms for the
description of parts of a joint.

Warming-up.

1.1. Match the words in A with the definitions in B.

A
B

1. A lap joint
a. A joinery technique in which two
members are joined by simply butting
them together

2. A butt joint
b. A joinery technique in which two
members are located at right angles to
each other

3. An edge joint
c. A joinery technique used to join the
edges of two or more members lying in
the same plane

4. Corner and tee joints
d. A joinery technique used to produce a
joint by overlapping two ends or edges

1.2. Before you start reading the text try to answer the following
questions.
1. What parameters are welds classified by? 2. What types of welds
do you know? 3. How can joints be subdivided within these types?
4. What does the choice of weld depend on?

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1.3. Look through the text and grasp the general idea.

Weld Joints

The weld joint is where two or more metal parts are joined by welding. Welds can be geometrically prepared in many different ways. The
five basic types of weld joints are the butt, corner, tee, lap, and edge.
Other variations exist as well — for example, double-V preparation joints
are characterized by the two pieces of material, each tapering to a single
centre point at one-half their height. Single-U and double-U preparation
joints are also fairly common — instead of having straight edges like
the single-V and double-V preparation joints, they are curved, forming
the shape of a U. Lap joints are also commonly more than two pieces
thick — depending on the process used and the thickness of the material,
many pieces can be welded together in a lap joint geometry.

A. Butt joint
B. Corner joint

C. Tee joint
D. Lap joint

E. Edge
Basic weld joints

A butt joint is used to join two members aligned in the same plane.
This joint is frequently used in plate, sheet metal, and pipe work. A joint
of this type may be either square or grooved.

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Corner and tee joints are used to join two members located at right
angles to each other. In cross section, the corner joint forms an L-shape,
and the tee joint has the shape of the letter T.
Various joint designs of both types have uses in many types of metal
structures. A lap joint, as the name implies, is made by lapping one piece
of metal over another. This is one of the strongest types of joints available; however, for maximum joint efficiency, you should overlap the
metals a minimum of three times the thickness of the thinnest member
you are joining. Lap joints are commonly used with torch brazing and
spot welding applications. An edge joint is used to join the edges of
two or more members lying in the same plane. In most cases, one of
the members is flanged. While this type of joint has some applications
in platework, it is more frequently used in sheet metal work. An edge
joint should only be used for joining metals 1/4 inch or less in thickness
that are not subjected to heavy loads.
Often, particular joint designs are used exclusively or almost exclusively by certain welding processes. For example, resistance spot
welding, laser beam welding, and electron beam welding are most frequently performed on lap joints. However, some welding methods, like
shielded metal arc welding, are extremely versatile and can weld virtually any type of joint. Additionally, some processes can be used to make
multipass welds, in which one weld is allowed to cool, and then another
weld is performed on top of it. This allows for the welding of thick
sections arranged in a single-V preparation joint, for example. The type
of joint selected for any welding job may materially affect the quality
and strength of the weld; the cost of labour and materials; the time and
expense involved in preparing, jigging, and positioning the work; and
other factors of like importance. The selection of the proper joint type
depends on a number of factors, such as joint thickness and material,
desired physical properties in the finished joint, size of the pieces being
welded, accessibility of the joint, fit-up obtainable, available edge preparation equipment, number of pieces to be welded, and specifications of
regulatory codes (if applicable).
(3219)

From http://64.78.42.182/sweethaven/BldgConst/Welding/lessonmain.asp?
lesNum=3&modNum=2

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