Common single-medium quenching, multi-media quenching, graded quenching and isothermal quenching, these several kinds of quenching processes, the more common is single-medium quenching and multi-media quenching, the medium mainly has water, oil, quenching liquid, etc., in the production process, because the workpiece is heated to a very high temperature, into the quenching pool, most of the heat will be absorbed by the medium, the temperature rises sharply. At this time, if you rely on natural cooling to delay the time, it will affect the efficiency.
Therefore, at this time, it is necessary to use a cooling tower to cool the medium. Commonly used quenching liquid and quenching oil have a certain viscosity, if you use an open cooling tower, directly sprayed on the water filler, will adhere to the above, a long time, the adhesion layer will become thicker and thicker, resulting in a reduced heat exchange effect of the cooling tower, the later cooling tower cleaning process is very troublesome. The closed cooling tower has an efficient heat transfer effect. The quenching medium is heat exchanged through the heat exchanger of the closed cooling tower and is not in contact with the outside world, which will increase the heat exchange effect and the service life of the closed cooling tower.
Oasis ice peak welding and cutting process