（Vertical) 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

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

Air cooling pressure 0.8-20bar;

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;

Vacuum regulation anti pollution and online replacement technology;

A freely movable heating chamber upper cover with patent structure;

Heating element with patented structure;

Temperature thermocouple feeding device with patented structure;

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

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

Specifications

model	VVGgr-80/100-1300	VVGgr-90/100-1300	VVGgr-100/100-1300	VVGgr-130/100-1300	VVGgr-150/100-1300
Active workspace	φ800x1000	φ900x1000	φ1000x1000	φ1300x1000	φ1500x1000
Charging capacity	700kg	850kg	1000kg	1500kg	2000kg
heating power	160KW	200KW	240KW	300KW	360KW
maximum temperature	1300℃
Temperature uniformity	±5℃
Limit vacuum	≤6.7x10^-1Pa OR ≤8x10^-3 Pa
Pressure rise rate	<0.67Pa/h
Gas quenching pressure	6\10bar
Structure of thermal chamber	Round
Material of hot chamber	Graphite / molybdenum and heat resistant stainless steel
control mode	Manual/automatic

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.