Английский для сварщиков. Гричин С.В. - 30 стр.

UptoLike

Составители:

Рубрика:

electrode

1836 Edmund Davy brought a coated metal

electrode

1881 A. P. Strohmenger invented and patented

the covered electrode

1900 Benardos described forging

operation

1904 C.J. Holslag invented alternating

current

1919 Oscar Kjellberg demonstrated the

welding process with

carbon electrode

1935 Jones, Kennedy and Rothermund developed Submerged

Arc Welding

1924 Alexander patented Atomic

Hydrogen Welding

process

After-reading discussion

True or false?

1. Arc welding was used to build the Iron pillar in Delhi, India.

2. The discovery of acetylene made it possible to achieve higher heating

temperatures.

3. The first electrode used in welding was a covered one.

4. The British Prime Minister Winston Churchill was a famous welder.

5. Oxygen is used as shielding gas in TIG welding.

6. The TIG process made it possible to construct planes faster.

Answer the following question on the text:

1. Which process was developed earlier, MIG or TIG?

2. Why is rod added in carbon electrode welding?

3. What is the difference between the Atomic Hydrogen Welding process and

the MIG process?

4. What kind of gas was first used to shield the molten puddle?

5. Is tungsten electrode consumable?