Power sources for arc welding, Mechanical Engineering

POWER SOURCES FOR ARC WELDING


Electric arc welding processes constitute a majority of all the welding processes. Most of the weldable materials can be joined by arc welding. Due to the versatility of arc welding processes they are employed in many product areas. It would be worthwhile, hence, to know better about arc welding process principles, equipments and applications. The one important equipment that is significant for arc  welding processes is the welding power source.

NECESSITY FOR A SEPARATE WELDING POWER SOURCE


Eventhough, electric arc can be struck with higher voltages (100 - 200 V), it is not recommended to use directly an industrial power connection (440 V / 230 V) for welding, for the following reasons. The arc struck with a higher voltage will be inconveniently large and long. Hence, the manipulation of the arc will be difficult to achieve welding. Moreover, the energy loss of such an arc will be uneconomically high making the welding process inefficient in power. The most important reason is that historically the manual arc welding was developed first, hence the safety of the welder for reducing the risk of electric shock hazard, necessitated a separate welding power source to give reduced operating arc voltages. A welding power source converts the input voltage to a conveniently reduced safe operating voltage.  Arc struck with such a power supply will be small and can be easily guided and manipulated.

Posted Date: 9/14/2012 1:43:14 AM | Location : United States







Related Discussions:- Power sources for arc welding, Assignment Help, Ask Question on Power sources for arc welding, Get Answer, Expert's Help, Power sources for arc welding Discussions

Write discussion on Power sources for arc welding
Your posts are moderated
Related Questions
Plant level - Safety Organization This level works at plant level and would directly report to general manager safety. There must be four plant safety managers as recognized

What are the Technical Limitations of screw conveyer Technical Limitations: ? Turning limitation of this mechanism Actually the Maximum Turning of U-joint is 18° to 2

Wrought Al Alloys This aluminium alloys are acquired by addition of Mn and Mg. The Al-Mn and Al-Mg alloys cannot be heat treated. Al-Mn alloy combines high ductility along wi

(a) What will happen if air filter is not used? (b) What are the components of an air filter? (c) What precautions should be followed while cleaning the air filter? (d) What grade

Find maximum torque which can be transmitted by belt drive: A belt is stretched over the two identical pulleys having diameter D meter. The initial tension in belt throughout

Wet saturated steam -  thermodynamics: we t saturated steam Wet steam is a 2-phase mixture comprising of boiling water particles and dry steam in equilibrium state. Its for

Difference between path function and point function

Q. What do you mean by Moulding materials? Various types of materials are used in the foundries for the manufacture of casting moulds and cores. These materials are divided in

Name The Boolean Set Operators used in CSG The Boolean Set Operators used are : union : A + B is the set of points that are in A or B. intersection : A . B is the s

compression ignition engine fore stork with neat daysgram