Keywords: quenching oil tank, quenching tank, quenchin, workpiece, quenching oi, temperature,

the cause of the fire in the quenching oil tank is good to deal with
 the fire in the quenching oil tank is usually caused by ① the amount of quenching oil is insufficient relative to the workpiece, the temperature of the quenching oil is too high due to quenching or continuous quenching, and oil vapor appears on the oil surface, which is flammable when exposed to open flame 1. Generally, it is necessary to ensure that the overall oil temperature in the oil tank is not higher than 150 degrees under the condition of quenching. ② Quenching workpiece into the quenching oil process, contact with the workpiece part of the quenching oil quickly evaporated, instantaneous high temperature oil vapor encountered red hot workpiece to produce open flame, when the workpiece quickly immersed in oil, open flame immediately extinguished, but when the mechanical failure or sudden power failure. There will be a fire soon.
 The best way for oil tank fires is to focus on prevention, isolate the air, reduce the oil temperature, and use extinguishing agents to extinguish the fire. The specific protective measures include: ① changing the quenching tank into a fully enclosed structure, setting up a flip cover plate to cover the cover opening during quenching; ② Prepare fireproof cloth, fireproof blanket and pull rope at the corners, which can be covered with fireproof cloth at a long distance. Even if the fire cannot be extinguished, the fire can be slowed down and reduced. On the one hand, it can obtain valuable time for rescue and 2 reduce fire losses. ③ Set up an emergency decoupling device. In case of mechanical failure or sudden power failure, manual blanking can be performed when the workpiece part enters the quenching oil. ④ preparation of extinguishing agent, carbon dioxide or nitrogen is the best extinguishing agent for quenching oil. It can also be used by pre-installing fire extinguishing pipes. When a fire occurs, the valve can be opened, and the fire can be extinguished instantaneously. The remaining quenching oil can be used normally by simple treatment (or no treatment at all). Foam is the second choice, because foam, fire fighting will cause secondary pollution, do not use water to extinguish fire. When a fire alarm occurs, it must be explained clearly so that the fireman will prepare the corresponding extinguishing agent.
 In short, the quenching oil tank must be used and maintained in accordance with the rules and regulations, combining prevention and control, and giving priority to prevention. Do not panic after the fire, according to the fire plan to deal with calm and calm, in the premise of ensuring safety fire.

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