How to prevent oil quenching explosion in high temperature vacuum furnace

How to prevent oil quenching explosion of vacuum furnace in high temperature when using vacuum furnace correctly

High temperature vacuum furnace is one of the most widely used equipment in the heat treatment industry. With the development of modern industry and the improvement of product quality requirements for the workpiece, vacuum furnace is replacing the traditional heat treatment equipment to become the most mainstream equipment in the heat treatment industry. But in the actual production and application of vacuum furnace, the explosion accident of vacuum furnace is occasionally heard, which brings great hidden trouble to the safety production.

The causes of explosion in vacuum oil quenching furnace are briefly analyzed today:

First, the amount of oil in the vacuum oil quenching furnace after the standard basket to the oil tank, the distance between the oil surface and its direct at least 100 mm above, if the distance is less than 100 mm, the temperature of the oil surface will be relatively high, it may cause the explosion of the vacuum furnace.

Second, in the vacuum oil quenching furnace under the oil before the nitrogen and not into the air, a lot of manufacturers in order to save costs and not through nitrogen, in addition before the workpiece is out of the best also can pass nitrogen, otherwise it is very easy to cause the explosion of the vacuum furnace equipment.

Thirdly, when the temperature of the workpiece exceeds the limit when the oil is produced, the vacuum quenching oil will be vaporized and will explode once it enters the air or oxygen.

Fourthly, regardless of the heat treatment equipment itself, the quality of vacuum quenching oil itself will also cause explosion accidents, such as the quenching oil with low flash point and ignition point.

Fifthly, the size and shape of the workpiece itself quenched in the vacuum oil quenching furnace are also one of the causes of the explosion.

In addition to the above accident to pay attention to, also want to clean up the environment around the workshop, avoid inflammable, explosive objects and gas around the vacuum furnace.