| 摘要 |
<p>The method for cooling heat-treated elements (2), in which the cooling is carried out after heat treatment, comprises producing and maintaining a circulating gas flow (7) in a rapid cooling region (4) through which the elements are moved after the heat treatment, and adding predetermined amounts of a cryogenically liquefied gas (9) in the circulating gas flow at predetermined time. The circulating gas flow flows around the part region area of the elements of turbulent. The circulating gas flow is produced and maintained by a recirculating means (6). The method for cooling heat-treated elements (2), in which the cooling is carried out after heat treatment, comprises producing and maintaining a circulating gas flow (7) in a rapid cooling region (4) through which the elements are moved after the heat treatment, and adding predetermined amounts of a cryogenically liquefied gas (9) in the circulating gas flow at predetermined time. The circulating gas flow flows around the part region area of the elements of turbulent. The circulating gas flow is produced and maintained by a recirculating means (6). The parameters such as the quantity of cryogenically liquefied gas, timing of the addition of the cryogenically liquefied gas, the speed of the circulating gas flow, and the mass flow of the circulating gas flow are adjusted in dependent upon the parameter such as temperature at which the heat treatment is carried out, the temperature of the elements in the rapid cooling region, the speed of the element in the cooling region, a reference temperature in the circulating gas flow and an oxygen content of the circulating gas flow. An independent claim is included for a device for cooling heat-treated elements.</p> |
