Разработка урока по специальности: "Сварочное дело": "Safety and Scheduled Maintance Protect Your Welding Assets"

The theme of the lesson: Safety and Scheduled Maintenance Protect Your Welding Assets/ Безопасность и запланированное обслуживание защищают Ваше сварочное имущество

The aims of the lesson

• Білімділік/Образовательная

ориентация на формирование развития аудитивных навыков и умений; развитие неподготовленной монологической речи на основе прочитанного текста, понимание высказываний учителя и собеседника в различных ситуациях общения, в том числе при наличии незнакомых языковых средств; понимание учебных текстов; повторение лексических единиц по пройденным темам, - как подготовительная часть к итоговому зачету.

• Дамытушылық/Развивающая

ввести новую лексику – терминологию сварочного дела; развивать монологическую и диалогическую речь; формировать умение выделать главное / частное

• Тәрбиелік/ Воспитательная

повысить мотивацию к изучению английского языка

The type of the lesson ознакомление с новым материалом

Study form фронтальная

Equipment Раздаточный материал (Текст для чтения,

практические задания по тексту, словарь терминов)

доска, мел

The steps of the lesson

1. The first step

- greeting

- introduction aims of the lesson

2. The central part of the lesson

Working with the text.

Ex.1. Read and translate the text

Safety and Scheduled Maintenance Protect Your Welding Assets

Q: What can I do to avoid electrical shocks?

A: Wet working conditions must be avoided, because water is an excellent conductor and electricity will always follow the path of least resistance. Even a person's perspiration can lower the body's resistance to electrical shock. Poor connections and bare spots on cables further increase the possibility of electrical shock, and therefore, daily inspection of these items is recommended. Equipment operators should also routinely inspect for proper ground connections.

Q: How can I inspect and maintain my wire feeder?

A: Periodically inspect the electrode wire drive rolls. If dirty, remove the drive rolls and clean with a wire brush. Deformed drive rolls should be replaced. Drive rolls should be changed, adjusted or cleaned only when the wire feeder is shut off. In addition, check the inlet and outlet guides and

replace if they are deformed from wire wear. Remember that when power is applied to a wire feeder, fingers should be kept away from the drive roll area.

Q: What are some important electrode safety considerations?

A: Welding power sources for use with MIG and TIG welding normally are equipped with devices that permit on/off control of the welding power output. If so, the electrode becomes electrically hot when the power source switch is ON and the welding gun switch is closed. Never touch the electrode wire or

any conducting object in contact with the electrode circuit, unless the welding power source is off. Welding power sources used for shielded metal arc welding (SMAW or Stick welding) may not be equipped with welding power output on/off control devices. With such equipment, the electrode is

electrically hot when the power switch is turned ON.

Q: How should I store my gas cylinders?

A: Cylinders should be securely fastened at all times. Chains are usually used to secure a cylinder to a wall or cylinder cart. When moving or storing a cylinder, a threaded protector cap must be fastened to the top of the cylinder. This protects the valve system should it be bumped or dropped. Cylinders

should not be stored or used in a horizontal position. This is because some cylinders contain a liquid which would leak out or be forced out if the cylinder was laid in a flat position. Also, welding guns and other cables should not be hung on or near cylinders. A gun could cause an arc against the

cylinder wall or valve assembly, possibly resulting in a weakened cylinder or even a rupture.

Q: How can I tell if my regulator is faulty?

A: The following symptoms indicate a faulty regulator:

Leaks - if gas leaks externally. Excessive сreep - if delivery pressure continues to rise with the downstream valve closed. Faulty gauge - if gauge pointer does not move off the stop pin when

pressurized, nor returns to the stop pin after pressure release. Do not attempt to repair a faulty regulator. It should be sent to your designated repair center, where special techniques and tools are used by trained personnel.

Q: How should an operator dress for optimum safety?

A: Gloves and clothing should be flame-resistant. Clothing made from a dark-colored, tightly woven material is best suited for welding. Gauntlet-type leather gloves should be worn to protect the hands and wrists. Shirt collars and shirt cuffs should be buttoned, and open front pockets are not advisable as they may catch sparks. Also, operators should never store matches or lighters in their pockets. Pants cuffs are not recommended, as they will also catch sparks. Tennis shoes do not qualify as adequate foot protection. Hightop leather shoes or boots are absolutely necessary.

Preparation to the total test.

3. The end of the lesson

Summing up of the lesson.

Marks of the lesson.

Home task - Лексика по теме урока, терминология сварочного дела