- •Англійська мова
- •Київ кнутд 2009
- •Unit 9 Topic: Types of Lathes. Milling Machine
- •I. Reading skills.
- •Milling machine
- •Drill Press
- •History of the Lathe
- •3. Listen to the text once again and answer the following questions:
- •V. Communicative skills.
- •Unit 10 Topic: Machine parts. Fastening
- •2. Read and translate the following text into Ukrainian. Basic requirements for Machines and Machine Elements
- •3. Find the answers to the questions.
- •4. Complete the sentences:
- •The history of machines
- •Welding
- •3. True or false statements:
- •4. Listen to the text once again and answer the following questions:
- •V. Communicative skills.
- •Unit 11 Topic: The Main Joints of Machine Elements
- •2. Read and translate the following text into Ukrainian. The Main Joints
- •Welded Joints
- •II. Retell the text «The main joints».
- •III. Rendering
- •1. Read the text and translate it into Ukrainian, using new words in their specialized meanings below.
- •Key Joints
- •Splined Joints
- •3. True or false statements.
- •4. Listen to the text once again and answer the following questing:
- •V. Communicative skills.
- •Unit 12 Topic: Transmission machine parts
- •Read and translate the following text into Ukrainian. Rotary Motion Drives
- •Axles and shafts
- •Couplings and clutches
- •Listen to the text “Bringing the automobile to the common man” and try to understand it.
- •True or false statements:
- •Listen to the text once again and answer the following questions:
- •V Communicative skills.
- •Unit 13 Topic: Machine
- •2. Read and translate into Ukrainian the following text. What is Machine
- •Mechanical advantage and friction
- •History of the electric machines
- •2. Listen to the text “History of the electric machines” and try to understand it.
- •3. True or false statements.
- •4. Listen to the text once again and answer the following questions:
- •V Communicative skills.
- •Unit 14 Electric Machines Motors and generators
- •Read and translate into Ukrainian the following text. Motors Direct-current motors (a)
- •Alternating - current motors (b)
- •Find the answers to the questions.
- •Complete the sentences:
- •Direct-current (dc) generators Theory of Operation
- •Parts of a dc Generator
- •The great inventor Thomas Edison
- •Unit 15 Topic: Transformers
- •Transformers
- •Construction of a Transformer The Core and Coils
- •Transient conditions
- •2. Listen to the text “Transient conditions” and try to understand it.
- •3. True or false statements:
- •Listen to the text once again and answer the following questions:
- •V Communicative skills:
- •Unit 16 Topic: Machines and automatic controls in Light Industry
- •I Reading skills
- •Read and translate the following text into Ukrainian.
- •Instruments and automatic controls for Industrial processes.
- •"Automation"
- •Future of development
- •2. Listen to the text “Future of development” and try to understand it.
- •3. True or false statements.
- •4. Listen to the text once again and answer the following questions.
- •V Communicative skills.
Welding
Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence This is often done by melting the work pieces and adding a tiller material to form a pool of molten material (the weld puddle) that cools to become a strong joint with pressure sometimes used in conjunction with heat, or by itself, to produce the weld.
Many different energy sources can be used for welding, including a gas flame, an electric arc. a laser, an electron beam, friction, and ultrasound. While often an industrial process, welding can be done in many different environments. including open air. underwater and in outer space.
Until the end of the 19th century, the only welding process was forge welding, which blacksmiths had used tor centuries to join metals by heating and pounding them. Following the wars, several modem welding techniques were developed, including manual methods like shielded metal arc welding, now one of the most popular welding methods, as well as semi-automatic and automatic processes such as gas metal arc welding, submerged arc welding, flux-cored arc welding and electro slag welding. Developments continued with the invention of laser beam welding and electron beam welding in the latter half of the century. Today, the science continues to advance. Robot welding is becoming more commonplace in industrial settings, and researchers continue to develop new welding methods and gain greater understanding of weld quality and properties.
3. True or false statements:
1. The welded metal is heated to a melting temperature.
2. At present, the basic types of welding are gas welding electric resistance welding and electric arc welding.
3. Welding can not be done in many different environments.
4. Welding can be a dangerous and unhealthy practice.
5. Some welding processes are commonly used in a wide variety of conditions.
4. Listen to the text once again and answer the following questions:
1. What is welding?
2. What are the basic types of welding?
3. Until the end of 19th century, the only welding process was forge welding, wasn’t it?
4. When were several modern welding techniques developed?
5. Is robot welding becoming more commonplace industrial settings today?
V. Communicative skills.
Topic for discussion: How do machines help people do work by changing the amount of force?
Unit 11 Topic: The Main Joints of Machine Elements
1. Pre – reading tasks.
a) You will read a text about the main joints of Machine elements. Do you know the advantages of welding?
b) Read and memorise the following words and word-combinations in their specialized meanings.
1. detach – роз’єднувальний, змінний
2. permanent – постійний
3. fluid – рідина
4. strap – обхват, стягувати
5. curvilinear – криволінійний
6. tightness – герметичність, компактність
7. electrode wire – електродна проводка
8. butt – стик, торець
9. fillet – закругление, валик
10. joint – з’єднання