vacuum oil quenching furnace and vacuum gas quenching furnace

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Vacuum oil quenching furnace and vacuum gas quenching furnace is relatively common, many customers always hesitate between the two, do not know which is better.The following for you to analyze the advantages and disadvantages of the two types of vacuum furnace, convenient for you to understand.

Advantages and disadvantages of oil quenching furnace and gas quenching furnace

1. The conventional furnace, under the same power, the oil furnace is wider than the gas quenching furnace, gas quenching furnace for diameter and poor hardenability of steel surface narrow.

2. The cost of gas quenching is higher than that of oil quenching for the furnace with the same scale (loading capacity), which is due to the higher consumption of nitrogen than that of oil, longer working cycle, and easier loss of feed frame and furnace elements under constant heat and cold exchange.

3. The gas quenching furnace with diffusion pump can be used for high value products such as high speed steel, beryllium copper, stainless steel, titanium table gold, and vacuum tempering.This aspect of the oil quenching furnace is not.

4, Good hardenability of steel, gas quenching than oil quenching of the better structure, deformation and surface finish is also better. Conclusion: gas quenching furnace is suitable for high-end products or special products, oil quenching furnace is more widely applicable, the production cost is lower. If the small heat treatment plant, it is recommended to purchase the first oil quenching furnace, gas quenching is more suitable for subsequent purchase and decoration.

The cooling rate of gas quenching
In domestic vacuum furnace, the cooling rate of high-pressure gas quenching can reach 10 bar, but whether the large Cr12 can be quenched to HRC60 is a question mark.But 20 bar has been made internationally, and in the experiment at 40 bar, the high-pressure gas quenching at 20 bar is equivalent to the cooling rate of the vacuum quenching oil in the static state, and the high-pressure gas quenching at 40 bar can achieve the cooling rate of the vacuum quenching oil in the stirring state.It’s just that the vacuum furnace from start to finish is much more expensive than the oil quenching furnace.

vacuum oil quenching furnace

vacuum gas quenching furnace