Vacuum Gas 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 (vertical), single chamber structure design, circular (square) heating chamber structure;

Air cooling pressure: 0.8-20bar; air cooling system: circulating fan is installed on or outside the vacuum furnace body, cooling gas is sprayed on the workpiece through various ways (different furnace types and cooling methods), and then flows through multi-stage high efficiency copper copper heat exchanger for forced cooling, so as to meet the requirements of heat treatment process; anti pollution and on-line replacement technology of vacuum tube; can be used with patented structure It has the following advantages: free moving upper cover of heating chamber; heating element with patent structure; feeding device of temperature thermocouple with patent structure; double-layer sealing structure of temperature control thermocouple with patent structure; cylinder sealing structure with patent structure and easy disassembly.

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.


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


1.Bright quenching of alloy steel, high speed steel, die steel, bearing steel, elastic alloy, stainless steel and other materials; 

2.Vacuum heat treatment of magnetic materials; 

3.High temperature vacuum brazing and vacuum sintering.

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