Сборник текстов и заданий по дисциплине СГ.02 Иностранный язык в профессиональной деятельности для профессии 15.01.05 Сварщик (ручной и частично механизированной сварки (наплавки)для

ГБПОУ Белебеевский Гуманитарно-технический колледж

Методическая разработка

«Сборник профессионально-ориентированных текстов и заданий по дисциплине СГ.02 «Иностранный язык в профессиональной деятельности»

для профессии 15.01.05 Сварщик (ручной и частично механизированной сварки (наплавки)»

Выполнила: Султанова Г.А.

преподаватель английского языка

2024

Пояснительная записка

Данная методическая разработка выполнена в соответствии с рабочей программой по дисциплине СГ.02 Иностранный язык в профессиональной деятельности для профессии 15.01.05 Сварщик (ручной и частично механизированной сварки (наплавки) и может быть использована на занятиях по иностранному языку как для работы в классе, так и для самостоятельной работы по предмету. Основной целью сборника является подготовка студентов к чтению профильно-ориентированной литературы, развитие навыков чтения, говорения по профессиональной тематике. Отбор учебного материала осуществлен в соответствии с требованиями ФГОС СПО по профессии 15.01.05 Сварщик (ручной и частично механизированной сварки (наплавки). Тексты сопровождаются лексико-грамматическими упражнениями, которые помогают студентам приобрести необходимый лексический минимум, способствуют практическому овладению языком на основе прочитанного текста. При составлении данного пособия были использованы существующие рекомендованные печатные издания, актуальные источники информации (сайт компании по контролю и разработке сврочного промышленного оборудования и т.д.), так и самостоятельные разработки автора.

How to Determine the Welding Current and Voltage?

Welding is a fundamental process in various industries, from construction to manufacturing, and understanding the role of current and voltage in welding is crucial for achieving successful outcomes. In this article, we will delve into the importance of comprehending current and voltage during welding operations and provide insights into how to determine them effectively.

TEXT 1. Fundamentals of Welding

A. Definition of welding:

Welding is a fabrication process that joins materials, typically metals or thermoplastics, by causing fusion, wherein the base materials melt and form a strong bond upon cooling.

B. Key components of a welding system:

A typical welding system comprises a power source, electrode or welding rod, and a workpiece. The power source provides the necessary electrical energy for welding, while the electrode serves as a conductor through which the current flows to create the weld.

C. Role of current and voltage in welding:

Current and voltage are essential parameters in welding that directly influence the heat input and penetration depth during the welding process. Proper control and understanding of these parameters are critical for achieving the desired weld quality and strength.

Questions:

1. What are the key components of a welding system?

2. How is the welding process defined?

3. What does the power source provide?

4. What is the role of current and voltage in welding?

5. What is necessary for achieving the desired weld quality and strength?

Tasks

1) Find in the text the synonyms to the following words: define, fabrication, results.

2) Match the words in two columns:

1. power

2. successful

3. penetration

4. weld

5. welding

... depth

... source

... rod

... outcomes

... quality and strength

3) Find equivalents in the text:

1. сварочные работы,

2. сварочный стержень,

3. теплоподвод,

4. плавление,

5. сварочные работ

TEXT 2. Understanding Current in Welding

A. Definition of current in electrical terms:

Current, measured in amperes (A), is the flow of electric charge through a conductor over time. In welding, it is the flow of electrons through the electrode and workpiece, generating the heat necessary for fusion.

B. Types of current used in welding:

There are two primary types of current used in welding: direct current (DC) and alternating current (AC). DC is commonly used for welding applications due to its stable arc characteristics, while AC is suitable for certain welding processes like aluminum welding.

C. Factors influencing the choice of current in welding:

The choice between DC and AC welding depends on factors such as the material being welded, welding process, and desired weld characteristics. DC welding is preferred for its ease of control and better penetration, whereas AC welding may be necessary for specific materials or applications.

Questions:

1. How is the current in electrical terms defined?

2. How is the current in welding defined?

3. How many primary types of current are used in welding?

4. Why is DC commonly used for welding applications?

5. What kinds of welding processes is AC suitable for?

6. What factors does the choice between DC and AC welding depend on?

7. In which cases is AC welding preferable?

8. Why is DC welding preferred in some cases?

TASKS

1) Read and translate the international words: materials, characteristics, applications, specific, process, alternating, factors, amperes, types.

2) Find equivalents in the text:

1. области применения сварки,

2. простота регулировки,

3. стабильные характеристики дуги,

4. генерирование тепла,

5. поток электрического заряда,

6. свариваемые материалы.

TEXT 3. Understanding Voltage in Welding

A. Definition of voltage in electrical terms:

Voltage, measured in volts (V), is the electrical potential difference between two points in a circuit. In welding, it determines the arc length and the amount of heat produced at the weld pool.

B. Role of voltage in welding:

Voltage influences the stability and intensity of the welding arc, as well as the rate of metal deposition. Proper voltage control is essential for maintaining arc stability and achieving consistent weld quality.

C. Factors influencing the choice of voltage in welding:

The selection of voltage depends on factors such as electrode diameter, welding position, and material thickness. Higher voltages are typically used for thicker materials and out-of-position welding, while lower voltages are suitable for thinner materials and flat welding.

Questions:

1. How is voltage in electrical terms defined?

2. What does voltage determine in the welding process?

3. What helps achieve consistent weld quality?

4. How does the voltage used for thicker materials сhange?

1) Find and write 10 and more international words from the text.

2) Find equivalents in the text:

1. скорость осаждения металла,

2. сварка вне установленного положения,

3. выбор напряжения,

4. сварочная ванна,

5. длина арки,

6. поддержание стабильности дуги,

7. пространственное положение при сварке,

8. правильная регулировка напряжения

9. стабильное качество сварного шва,

10. количество тепла,

11. плоская сварка.

TEXT 4. Methods to Determine Current and Voltage in Welding

Determining welding current and voltage involves several steps to ensure the appropriate settings for the welding process:

• Consult Welding Procedure Specifications (WPS): The WPS typically provides recommended ranges for welding current and voltage based on the specific welding procedure and material being welded. It's essential to consult the WPS to understand the parameters suitable for the given welding application.

• Consider Material Thickness and Type: The thickness and type of material being welded influence the required welding current and voltage. Thicker materials generally require higher currents, while voltage settings may vary based on factors such as material conductivity and joint configuration.

• Select Electrode Type and Size: The type and size of the electrode (or welding wire) also affect welding parameters. Different electrodes have specific operating ranges for current and voltage, which should be followed according to manufacturer recommendations.

• Perform Test Welds: Before starting the actual welding process, it's advisable to perform test welds on scrap material using different combinations of current and voltage settings. This allows for evaluating the weld bead quality, penetration, and overall performance to determine the optimal parameters.

• Monitor Welding Conditions: During welding, it's essential to monitor the welding conditions continuously. This includes observing the welding arc, listening for any irregularities, and inspecting the weld bead formation. Adjustments to current and voltage may be necessary based on the observed weld quality.

• Measure Current and Voltage: Utilize appropriate measurement tools such as ammeters and voltmeters to directly measure welding current and voltage. Clamp meters can also be used for non-invasive current measurements. Ensure that the measured values fall within the specified ranges for the welding process being performed.

• Document Settings: Once the optimal welding current and voltage settings are determined, document them for future reference. This helps maintain consistency and repeatability in welding processes, especially for repetitive tasks or when multiple welders are involved.

Questions:

1. Why is it important to consult the WPS?

2. How do thicker materials influence the required welding current?

3. How do electrodes differ?

4. Why are test welds advisable to perform?

5. What does the monitoring the welding conditions include?

6. What measurement tools are used in welding process?

7. Why is it useful to record optimal welding current and voltage settings?

TASK

Write a short guide for the welder to determine the current and voltage during welding operations.

Conclusion

Understanding current and voltage in welding is essential for achieving successful welds with the desired quality and strength. By comprehending the fundamentals of current and voltage, as well as employing appropriate measurement techniques, welders can effectively control the welding process and produce high-quality welds consistently. Therefore, investing time and effort into mastering these aspects of welding is key to becoming a proficient welder and ensuring the success of welding operations.

Используемые источники:

1. Малецкая, О. П. Английский язык : учебное пособие для СПО / О. П. Малецкая, И. М. Селевина. — 2-е изд., стер. — Санкт-Петербург : Лань, 2021. — 136 с. — ISBN 978-5-8114-8057-9. — Текст : электронный // Лань : электронно-библиотечная система. — URL: https://e.lanbook.com/book/171416

2. https://www.megmeet-welding.com