Vacuum Oil Quenching Furnace

Vacuum quenching refers to the smooth quenching of parts. The quenching and cooling of parts are carried out in the vacuum furnace, and the quenching medium is mainly gas (such as inert gas), water and vacuum quenching oil. Vacuum quenching has been widely used in the quenching of various carburizing steels, alloy tool steels, high speed steels and stainless steels, as well as the solution treatment of various aging alloys and hard magnetic alloys.

Technical Data

Technical Features

Horizontal, double chamber structure, circular heating chamber structure; 

Feeding and discharging mechanism; double paddle structure, using frequency conversion speed control method to control feeding and discharging smoothly, rapidly and reliably; 

Oil mixing system: frequency conversion control motor drive agitator, guide plate can promote the reasonable circulation flow of vacuum quenching oil, improve the cooling capacity of quenching oil;

It has a patented temperature thermocouple feeding device and a patented temperature control thermocouple double-layer sealing structure.


TypeWorking Zone size(mm)Capacity(kg)Heating Power(KW)Max.Temp(℃)Temp.uniformityMax.vacuum(Pa)Pressure risingrate(Pa/h)Air cooling pressure
VGQV-150Ф600x800250150132054x10 -1 or 4x10-3≤0.656
VGQMV-300Ф600x12001200300132054x10 -1 or 4x10-3≤0.656
VGQMV-360Ф1000x10001000360132054x10 -1 or 4x10-3≤0.656
VGQMV-420Ф1000x12001000420132054x10 -1 or 4x10-3≤0.656
VGQV-200Ф1000x12001000200132054x10 -1 or 4x10-3≤0.656
VGQV-450Ф1000x25001500450132054x10 -1 or 4x10-3≤0.656
VGQMV-450Ф1600x20002500450132054x10 -1 or 4x10-3≤0.656


It is used for vacuum heat treatment, vacuum brazing and vacuum sintering of high speed steel, cold and hot working die steel, martensitic stainless steel, elastic alloy, superalloy, magnetic material and titanium alloy.

Main Ingredients

There are two kinds of quenching in vacuum: gas quenching and liquid quenching. Gas quenching is that the workpiece is heated in vacuum and then cooled by high purity neutral gas (such as nitrogen) in the cooling chamber. High speed steel and high carbon and high chromium steel are suitable for gas quenching. Liquid quenching is to heat the workpiece in the heating chamber, move it to the cooling chamber, fill it with high purity nitrogen, and immediately send it to the quenching oil tank for rapid cooling. If high surface quality is needed, tempering and precipitation hardening after vacuum quenching and solution heat treatment should still be carried out in vacuum furnace.


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