Tweet. The quenching method is commonly applied to steel objects, to which it imparts hardness. Share. Quenching also increases toughness of both alloys and plastics. The quenching of metal can be conducted with different media. The quenching media available can be water, air, oil, or brine. A quench refers to the sudden loss of superconductivity when its temperature is raised. Although hard, the material is extremely brittle and subject to cracking. If you are having to break high voltages care must be advised to minimize the amount of current flowing at the time of contact opening to minimize the metal transfer. A quench occurs when there is a rise in the magnet's temperature resulting in a loss of superconductivity, i.e. Quenching the arc refers to the stoppage of the arc and/or metal transfer. Quench definition, to slake, satisfy, or allay (thirst, desires, passion, etc.). After quenching in water, the material is the hardest it can get given the chemistry. Quenching definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Discussion. Quenching is the process of rapid cooling after heat treatment of a workpiece, while tempering is a process that involves heat treating to increase the toughness of iron-based alloys. Quenching is a metal heat treatment technology in which a metal workpiece is heated to a suitable temperature for a period of time and then immersed in a quenching medium for rapid cooling. So, the key difference between quenching and tempering is that quenching is the rapid cooling of a workpiece, whereas tempering is heat-treating a workpiece. See more. Since oil quenching is a less violent technique than water quenching, the chance of producing internal stresses, distortion, or cracking is reduced. Quenching is usually undertaken to maintain mechanical properties associated with a crystalline structure or phase distribution that would be lost upon slow cooling. Brine, water, mineral oil, air, and the like are the commonly used quenching media. Minimizing the current will prolong the life of the contacts. To remedy this, we temper the metal by heating the steel to a point where it becomes ductile. However, because it is more gentle, it does not produce metal that is as hard or strong as steel quenched by water. Quenching refers to rapid expulsion of the liquid cryogen used to maintain the MRI magnet in a superconducting state.. the resistance in the electrical current described above is no longer zero. Compare quenching with annealing and normalizing, the main difference is the quick cooling, the purpose is to obtain martensite. Look it up now! Quenching is about trade-offs, and while the chemistry behind quenching can be complicated, getting the process right ensures parts will perform as designed. In the superconducting state, the resistance of the magnet coil windings is zero and hence no energy is required to maintain current flow. 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