arc process

arc process

[¦ärk ¦präs·əs]
(chemical engineering)
A former process that used electric arcs for fixation (oxidation) of atmospheric nitrogen to manufacture nitric acid.
References in periodicals archive ?
Submerged Arc Welding (SAW) is a semiautomatic or fully automatic consumable electrode arc process in which the arc is protected by a granule, fusible flux which blankets the weld puddle and surrounds the base metal to protect it from the atmosphere.
2] or YAG) is combined to an arc process (TIG, MIG, MAG or plasma).
The Sub Arc DC 650 and Sub Arc DC 1000 are optimized for the sub arc process while providing air carbon, arc cutting and gouging, stick, and flux cored capabilities.
At its height, four Divisions were involved, including a team at Applied Physics (now Industrial Physics) who adapted a plasma arc process (like that used in arc welding) to destroy ozone-depleting substances such as halons (once used in fire extinguishers) and CFCs (the banned refrigerants).
A CRC-Evans[R] automated pipe welding system was utilized to automatically weld the circumference of the pipe using a gas metal arc process for high productivity.
If there is no air gap in the joint, sometimes the keyhole is blocked because of the extra material of the arc process or too much molten metal in the weld area.
The ARC process is comprehensive, accurately reflecting not only how good the products are, but also how well the vendors deliver technical and marketing support to channel partners, the effectiveness of vendor channel programs, and the channel's commitment to future business with vendors.
The technical approach modeled the details of the arc process as comprising the following nine unique sets of variables: peak current, base current, rise time, falling time, wire feed speed, arc voltage, waveform response time, pulse mode, and pulse frequency.
The submerged arc process is often used with hard automation applications.
From the start USAPA was concerned with the ARC process, as the FAA chose to invite only members of labor and management to participate," explained Cleary.
Using a buried arc process allows for the elimination of weld spatter, typical of globular transfer, because the arc is "buried" in the weld puddle.