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.

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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Technical Data

1.The structure of the heating chamber is vertical (square) and circular;

2.Air cooling pressure 0.8-20bar;

3.Air cooling system: a circulating fan is installed on or outside the vacuum furnace, and the cooling gas is sprayed on the workpiece through various ways (different furnace types and different cooling methods), and then flows through the multistage high-efficiency copper copper heat exchanger for forced cooling, so as to meet the requirements of heat treatment process;

4.Vacuum regulation anti pollution and online replacement technology;

5.A freely movable heating chamber upper cover with patent structure;

6.eating element with patented structure;

7.Temperature thermocouple feeding device with patented structure;

8.Double layer sealing structure of temperature control thermocouple with patent structure;

9.The cylinder seal structure with patent structure is easy to disassemble.

Specifications

Numbering	Model	Working Zone size(mm)	Capacity(kg)	Heating material	HeatingPower(KW)	Max temperature (℃)	Temperature uniformity（℃）	Limit vacuum degree (PA)	Air cooling pressure (bar)
VHG-446	VHGgr-40/40/60-1300	400x400x600	200	Graphite	100	1300	±5	6x10^-1Pa	2
VHG-669	VHGgr-60/60/90-1300	600x600x900	500	Graphite	150	1300	±5	6x10^-1Pa	2
VHG-8812	VHGgr-80/80/120-1300	800x800x1200	800	Graphite	220	1300	±5	6x10^-1Pa	2

Application

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

Vacuum heat treatment of magnetic materials;

High temperature vacuum brazing and vacuum sintering.