Thermal Arc 95 S Brochure Click here to receive your free copy.
Thermal Arc 95 S Brochure Click here to receive your free copy.
Thermal Arc 95 S Brochure Click here to receive your free copy.
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Establishing the <strong>Arc</strong> Length<br />
Establishing a good arc length is necessary <strong>to</strong> produce a quality weld. After striking,<br />
maintain a 1/16” <strong>to</strong> 1/8” gap between the burning electrode and the work piece.<br />
A good arc will produce a crackling noise.<br />
Problems with <strong>Arc</strong> Length<br />
A common problem after the arc is established is the tendency <strong>to</strong> pull the electrode<br />
so far away from the weld piece that the arc breaks.<br />
A little practice and persistence and you’ll develop a feel for the correct length<br />
of <strong>your</strong> arc.<br />
Striking the <strong>Arc</strong><br />
Rate of Travel<br />
Direction of Travel<br />
After the arc is struck, <strong>your</strong> next concern is <strong>to</strong> maintain it, and this requires moving<br />
the electrode <strong>to</strong>wards the molten pool at the same rate as it is melting away. At the<br />
same time, the electrode has <strong>to</strong> move along the plate <strong>to</strong> form a bead. The electrode is<br />
directed at the weld pool at about 20 degrees from the vertical. The rate of travel has<br />
<strong>to</strong> be adjusted so that a well-formed bead is produced. If the travel is <strong>to</strong>o fast, the<br />
bead will be narrow and strung out and may even be broken up in<strong>to</strong> individual globules.<br />
If the travel is <strong>to</strong>o slow, the weld metal piles up and the bead will be <strong>to</strong>o large.<br />
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