AT THE HEART OF THE ROAD TRANSPORT INDUSTRY.

Call our Sales Team on 0208 912 2120

OERL1KON ELECTRODES (GT. BRITAIN) LTD. Kelvin Way,

5th March 1965, Page 77
5th March 1965
Page 77
Page 77, 5th March 1965 — OERL1KON ELECTRODES (GT. BRITAIN) LTD. Kelvin Way,
Close
Noticed an error?
If you've noticed an error in this article please click here to report it so we can fix it.

Which of the following most accurately describes the problem?

Crawley, Sussex. L'OR welding mild steel, inexpensive trans.': formers (giving a.c. arcs) of low opencircuit voltage are perfectly acceptable. But for the successful use of low-hydrogen electrodes and most stainless steel types, which have special coatings, direct-current generators or rectifiers provide a more stable arc and smoother metal transfer than when the open circuit of a.c. transformers is increased. Apart from the question of cost —it is not unusual for a d.c. welding plant to cost twice as much as an a.c. transformer of equal capacity—the use of a d.c. power source introduces magnetic are blow which can sometimes be troublesome.

The Ocrlikon EFS.250 a.c. welding unit overcomes these problems because it operates at a frequency of 425 cycles per second_ This rise in frequency promotes better arc ignition. improved stability and a reduction in weld spatter, and also makes positional welding more easy. Welding output is regulated by coarse and fine control switches providing 35 settings between 15 and 255 amp.; open-circuit voltage is 75. The machine is mounted on a pair of robust, rubber-tyred wheels.

A wide range of arc-welding electrodes is produced by Oerlikon, the latest to be introduced being Ferrocord, Superzirkon, Ferricito and Supercito. These are iron-powder electrodes suitable for various applications.

Tags

Locations: Crawley

comments powered by Disqus