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Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695

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BuyFindarrow_forward

Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695
Textbook Problem
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What is the purpose of a hot pass?

To determine

The purpose of hot pass.

Explanation

The hot pass is used for burning the small amounts of slag trapped along the edge of root pass. This slag cannot be removed easily by chipping or wire brushing. The hot pass can be used to reshape the root pass by using the high current setting at a faster than normal travel speed.

Slag is mostly composed of silicon dioxide, which melts at approximately 3800°F or 1705°C. Steels melts at approximately 2600°F or

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