What is the basic knowledge of learning electric welding?

1, common welding methods (fusion welding; Pressure welding and brazing).

2. Manual arc welding, gas welding and gas cutting, argon arc welding and co2 gas shielded welding.

3. Selection and storage of covered electrode types, types and use of welding equipment and forms of welding joints.

4, the formation principle of weld.

5. Selection of welding position (horizontal welding, vertical welding, horizontal welding and overhead welding) and welding process parameters (welding current, arc voltage, welding polarity, welding speed, etc.). ), weld layout and weldment structure, gas welding technology and cutting technology, gas welding and gas cutting of common metal materials, argon arc welding principle, equipment use and welding technology.

6, welding deformation and stress and its generation and prevention methods.

7. Causes and preventive measures of common welding defects.

8. Welding inspection.

9, electric welding, gas welding safety regulations.

10, understand the welding characteristics and operation points of cast iron, copper, aluminum, titanium and other metals.

Extended data:

Welder skills:

1, the basic operation of manual arc welding (flat welding, vertical welding and horizontal welding) and the operation and essentials of overhead welding (using J507 alkaline covered electrode).

2, right-angle welding and vertical angle welding operation technology.

3. Welding methods of common metal materials.

4, master the basic operation technology of gas welding and gas cutting.

5. Correct use of flame adjustment method and flame application scope (carbonized flame, neutral flame and oxidized flame).

6, master argon arc welding arc, wire feeding technology, specific operation points and parameter adjustment, argon arc welding application scope.