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Torch mounted gas scavaging system for manual and robotic welding and cutting torches
| Details |
Inventors: Geiger, Michael B.;
Assignee:
Primary Examiner: Kastler; Scott
Assistant Examiner:
Attorney, Agent or Firm: Roddy; Kenneth A.
Disclosed is an improved welding system incorporating a novel torch mounted gas scavenging system which removes and filters contaminant gases from the workplace and incorporates an enclosure which creates high turnover rates of shielding gases at the weld pool thereby preventing contaminant gas induced defects, and which insulates the heat affected area thereby prolonging the cooling process of the weld pool, effectively reducing porosity and other related defects, and which provides the capability of accurately monitoring and displaying specific measurements of an ongoing welding operation such as humidity, ambient frequencies, internal temperature and pressure in the enclosure, and on line acoustic emissions sensors which indicate the presence or absence of defects as the weld is being made. The system also has an auxiliary gas source which is independently controlled from the primary shielding gas flow, which allows the introduction of auxiliary gas flows into the enclosure without disturbing the primary gas flow pattern. |
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DETAILED DESCRIPTION It is therefore an object of the present invention to provide higher quality welds and repeatability of quality in both manufacturing, industrial, and underwater welding applications.
It is another object of this invention to provide a method of evenly heating both materials to be joined concurrently, to optimize penetration, to offer the capability of high metal deposition rates if so desired, and to help prevent warping and deformation of the joined materials.
Another object of this invention is to enable welding in zero visibility conditions underwater, where suspended particulate matter completely prevents or interferes with viewing the welding process.
Another object of this invention is that of diagnostic assesments of weld quality as the weld is being made, using acoustic emissions sensors as on line sensors.
Another object of this invention is to provide a dry, stable environment for the welding arc and to successfully exclude porosity causing vapors and gases, and to limit thermal conductivity in the substrate during the welding process.
Another object of the present invention is to provide a welding enclosure which can be robotically controlled and manipulated for robotic welding applications, both for underwater and above water industrial and manufacturing applications.
Another object of this invention is to provide a highly mobil and easily manipulated miniature, hyperbaric, stabilized environment for the welding process which enhances weld quality, weld inspections, and viewability of the weld in process.
Another object of this invention and an advantage over the prior art is the provision of a miniaturized dry environment for a shielded metal arc welding process, with a clearly visible arc in poor underwater visibility conditions, and enabling easily changed rods in such conditions.
Another advantage of the present invention over the prior art is in its ability to exclude exhaust gases and porosity causing vapors from the immediate area of the weld by the inherent design of a small enclosure employing high shielding gas flows, resulting in less weld contamination from unwanted gases
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Exercise Devices2 
