What is welding? What do Welders do?

Course: 1

Theme: What is welding? What do Welders do?

Aims:

Educational: Students will be able to use new vocabulary and phrases talking about your profession

Developing: To develop speaking and listening skills in oral speech and reading the text. To practice working in groups. To try to choose right answer.

Bringing up: To respect national traditions and customs.

The type of the lesson: lesson-combination.

Inter subject connection: Russian, Kazakh.

The visual and teaching aids: a basic textbook, cards.

Organization moment: Greeting. Absence.

Checking HW

Presentation of the new theme:

Welding.

1. Read and translate the text.

Welding is a process when metal parts are joined together by the application of heat, pressure, or a combination of both. The processes of welding can be divided into two main groups:

•pressure welding, when the weld is achieved by pressure and

•heat welding, when the weld is achieved by heat. Heat welding is the most common welding process used today.

Nowadays welding is used instead of bolting and riveting in the construction of many types of structures, including bridges, buildings, and ships. It is also a basic process in the manufacture of machinery and in the motor and aircraft industries. It is necessary almost in all productions where metals are used.

The welding process depends greatly on the properties of the metals, the purpose of their application and the available equipment. Welding processes are classified according to the sources of heat and pressure used: gas welding, arc welding, and resistance welding. Other joining processes are laser welding, and electron-beam welding.

Сварка - это процесс, когда металлические части соединяются друг с другом посредством применения тепла, давления или их комбинации. Процессы сварки можно разделить на две основные группы:

• сварку под давлением, когда сварной шов достигается давлением и

• тепловая сварка, когда сварной шов достигается теплом. Тепловая сварка является наиболее распространенным процессом сварки, используемым сегодня.

В настоящее время сварка используется вместо болтов и клепок при строительстве многих типов конструкций, включая мосты, здания и суда. Это также основной процесс в производстве машин, а также в автомобильной и авиационной промышленности. Это необходимо почти во всех производствах, где используются металлы.

Процесс сварки во многом зависит от свойств металлов, их применения и доступного оборудования. Процессы сварки классифицируются в зависимости от используемых источников тепла и давления: газовой сварки, дуговой сварки и резистивной сварки. Другие процессы соединения - лазерная сварка и электронно-лучевая сварка

Vocabulary

pressure welding сварка давлением

heat welding сварка нагреванием

instead вместо, взамен

bolting скрепление болтами

riveting клепка

basic основной

to manufacture изготовлять

to depend зависеть от

purpose цель

gas welding газосварка

arc welding электродуговая сварка

resistance welding контактная сварка

laser welding лазерная сварка

electron-beam welding электронно-лучевая сварка

2. Answer the questions.

1. How can a process of welding be defined?

2. What are the two main groups of processes of welding?

3. How can we join metal parts together?

4. What is welding used for nowadays?

5. Where is welding necessary?

6. What do the welding processes of today include?

3. Find in the text.

1. Сегодня сварка используется вместо соединения болтами.

2. Сварочный процесс в основном зависит от свойств металла.

3. Она необходима почти во всех производствах, где используется металл.

4. Сварка нагреванием – самый распространенный процесс сварки сегодня.

5. Это основной процесс в машиностроении.

4. Find 8 words and write them.

5. Read in the text.

1. …… are laser welding, and electron-beam welding.

2. …… in all productions where metals are used.

3. …… on the properties of the metals.

4. …… or a combination of both.

5. …… when the weld is achieved by heat.

Writing
Write five sentences (one per each paragraph) summarizing the main ideas of the text.
Reading
Skim the text to understand its main ideas

Homework.

Retell

The new words

Conclusion.

Our lesson is reaching the end. My dear, today you were very active and worked hard.

Your marks for today’ s lesson are…Thank you! See you later!

Text 2. What is welding and what do welders do?
Welding is the most economical and efficient way to join metals permanently. It is the only way of joining two or more pieces of metal to 10 make them act as a single piece. Welding is vital to our economy. It is often said that over 50% of the gross national product of the U.S.A. is related to welding in one way or another. Welding ranks high among industrial processes and involves more sciences and variables than those involved in any other industrial process. There are many ways to make a weld and many different kinds of welds. Some processes cause sparks and others do not even require extra heat. Welding can be done anywhere… outdoors or indoors, underwater and in outer space.
Nearly everything we use in our daily life is welded or made by equipment that is welded. Welders
help build metal products from coffeepots to skyscrapers. They help build space vehicles and millions
of other products ranging from oil drilling rigs to automobiles. In construction, welders are virtually rebuilding the world, extending subways, building bridges, and helping to improve the environment by building pollution control devices. The use of welding is practically unlimited. There is no lack of variety of the type of work that is done.
Welders are employed in many industry groups. Machinery manufacturers are responsible for agricultural, construction, and mining machinery. They are also involved in bulldozers, cranes, material handling equipment, food-processing machinery, papermaking and printing equipment, textiles, and office
machinery.
The fabricated metals products compiles another group including manufacturers of pressure vessels, heat exchangers, tanks, sheet metal, prefabricated metal buildings and architectural and ornamental work. Transportation is divided into two major groups: manufacturers of transportation equipment except motor vehicles; and motor vehicles and equipment. The first includes shipbuilding, aircraft, spacecraft, and railroads.
The second includes automobiles, trucks, buses, trailers, and associated equipment.
A small group of welders belongs to the group of repair services. This includes maintenance and repair on
automobiles or refers to the welding performed on industrial and electrical machinery to repair worn parts.
The mining, oil extraction, and gas extraction industries form yet another group. A large portion of the work
involves drilling and extracting oil and gas or mining of ores, stone, sand and gravel.
Welders are also employed in the primary metals industries to include steel mills, iron and steel foundries, smelting and refining plants. Much of 11 this work is maintenance and repair of facilities and equipment. Another group is the electrical and electronic equipment companies. Welding done by this group runs from work on electric generators, battery chargers, to household appliances.
Public administration employs welders to perform maintenance welding that is done on utilities, bridges,
government armories and bases, etc. Yet another group involves wholesale and retail establishments. These would include auto and agricultural equipment dealerships, metal service centers, and scrap yards.
Probably the smallest group of welders, but perhaps those with the biggest impact on the public are the artist and sculptors. The St. Louis Arch is possibly one of the best known. But there are many other fountains and sculptures in cities and neighborhoods around the world.
While-reading activity
Find the English equivalents for the following words and word combinations:
валовой национальный продукт, на открытом воздухе, в помещении, космический корабль, горное оборудование.
True or false?
1. Welding is an important process employed by modern industry.
2. All welding processes are similar.
3. All welding processes require work pieces to be heated.
4. The smallest group of welders belongs to the group of repair services.
5. Welding is the only way to join metals.

After-reading activity
Make up a summary of the text using the following sentences as a
beginning:]
1. Welding is…. 2. Welding ranks… 3. There are many kinds… 4. Welding
can be made… 5. Welders can… 6. The use of welding is… 7. Welders are
employed in … .
Lead-in
You already know where welders are involved. Read the text below and find
out if there are more such places.
Vocabulary