- •Ректор университета
- •Рекомендовано кафедрой «Иностранные языки» бгту
- •Предисловие
- •Read and learn the following words and expressions:
- •1. Answer the following questions:
- •2. Fill in prepositions if necessary. Translate these sentences into Russian.
- •Soldering
- •Arc Welding
- •Read and learn the following words and expressions:
- •1. Answer the following questions:
- •2. Give the summary of the text.
- •Text b Aluminium
- •Electroslag Welding
- •Read and learn the following words and expressions:
- •1. Answer the following questions:
- •2. Give the summary of the text.
- •3. Fill in prepositions if necessary.
- •4. Point out which of these sentences do not contain information from the text. Translate these sentences into Russian:
- •Lead-Silver Solder
- •1. Answer the following questions:
- •2. Give the summary of the text.
- •3. Fill in prepositions if necessary. Translate these sentences into Russian.
- •4. Translate the following word combinations into Russian. Use them in the sentences of your own.
- •6. Point out which of these sentences do not contain information from the text. Translate these sentences into Russian.
- •Read and translate the text. Text b Ultrasonic Welding
- •Read and learn the following words and expressions:
- •1. Answer the following questions:
- •2. Fill in prepositions if necessary.
- •Improved Quality Through Ultrasonic Metal Welding
- •Supplementary reading Text 1 Soldering
- •Sources of Heat
- •Text 2 Soldering Aluminum Alloys
- •Text 3 Application Technology
- •Text 4 Economy Of Ultrasonic Metal Welding
- •Appendix
- •Научный редактор е.А. Акулова Редактор издательства л.И. Афонина
Read and learn the following words and expressions:
application soldering to bond to melt surface lead-tin alloys tinning brazing to fuse filler metal work piece filler rod shield oxidation flux to vaporize |
- применение - паяние - соединять - плавиться - поверхность - свинцово-оловянный сплав - лужение - пайка твердым припоем - плавить(ся), сплавлять(ся) - присадочный металл - заготовка - присадочный пруток - экран; защитная ширма - окисление - плавень, флюс - испаряться |
1. Answer the following questions:
What are the first things a new welder needs to understand?
What is soldering?
Give the definition to the term tinning.
What is the difference between soldering and brazing?
What is welding?
What is cutting?
What do you know about shield?
2. Fill in prepositions if necessary. Translate these sentences into Russian.
A new welder needs to understand the kind … welding processes and equipment.
Good ...joining dissimilar materials.
Leading is a form … soldering, solder is used to fill in the surface of metal.
Brazing is similar … soldering, but uses a higher temperature to fuse the filler metal to the work pieces.
Welding is joining 2 similar work pieces … melting them together, usually … an additional filler rod of some sort to take up space.
During the cutting the work is heated … melting point and beyond.
Shield is a barrier to keep oxygen… … heated work to prevent oxidation.
Oxidation … the surfaces will prevent proper bonding … the metals oxidation.
3. Give the summary of the text.
4. What parts of speech do the following words belong to? Translate these words into Russian.
Welding, equipment, welder, application, dissimilar, higher, usually, point, space, coat, use, form, liquid, coating, call.
Read and translate the text.
Text B
Brazing
Brazing is "a group of welding processes which produces coalescence of materials by heating them to a suitable temperature and by using a filler metal, having a liquidus above 450oC and below the solidus of the base materials. The filler metal is distributed between the closely fitted surfaces of the joint by capillary attraction."
A braze is a very special form of weld, the base metal is theoretically not melted. There are seven popular different processes within the brazing group. The source of heat differs among the processes. Braze welding relates to welding processes using brass or bronze filler metal, where the filler metal is not distributed by capillary action.