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Canonsburg, PA, United States

Mutschler B.,Shipyards | Keil D.,Bug O Systems
Welding Journal | Year: 2013

Manual welding requires a relatively high level of training and skill. As skilled welders become more difficult to find, mechanized welding is an economical alternative that makes less-skilled welders more efficient in producing higher quality welds. Less welder skill and physical effort are required using mechanized welding solutions. One way to take advantage of these mechanization gains is with a self-propelled welding tractor. Welders often work in close, tight-fitting quarters and need machines to not only fit where they have to weld, but that can also take the abuse of day-to-day industrial welding environments. One railcar manufacturer discovered that a car typically had between 40 and 60 pinhole-sized leaks per assembled section due to starts, stops, and inclusions in the welds. Every time there is a stop or start, which is common with manual and even semiautomatic welding, this is a potential area for a slag inclusion of other defect to occur. Source

Nelson J.,Bug O Systems
Welding Journal | Year: 2013

Pipeline welding is a competitive business, and every contractor must bid aggressively. They have had to be competitive in their time- lines for completion and, of course, in pricing to meet the needs of the financial constraints often seen today. Contractors frequently wait long periods from the time they place their respective bids before they receive an approval to begin their portion of the contract. Welding professionals are often confronted with the question of improving efficiency. Whenever a comparison between welding processes is considered, the efficiency of the process is crucial to the final decision. Deposition efficiency compares the actual amount of weld metal in the completed joint with respect to the total weight of the electrode used. For example, submerged arc welding (SAW) has a high efficiency, whereas shielded metal arc welding (SMAW) has a lower efficiency. Source

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