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Tool steel vacuum tempering furnace

Vacuum tempering furnace is a kind of high precision vacuum furnace, which is designed and developed by our company. It is mainly used for vacuum tempering heat treatment of automobile parts, castings, tool steels and other mechanical parts.

The structure of the vacuum type tempering furnace is similar to that of the pre-pumped vacuum furnace, and has the advantages of high energy saving, power saving, high temperature control accuracy and low fault maintenance rate. When vacuum tempering is needed in the furnace, the temperature at all points in the effective working range is uniform. The vacuum tempering furnace is equipped with high-power high-pressure vacuum sealed stainless steel fan, which can provide strong and stable air pressure in the vacuum tank and make the temperature even. At the same time, the furnace cover is installed with various connections such as vacuum pumping, protective atmosphere and vacuum pressure gauge.


Tool steel vacuum tempering furnace


Technical features:

The furnace body is a horizontal, single chamber and horizontal charging structure.

The furnace furnace is composed of wide nickel-chromium alloy heating belt and multi-layer stainless steel screen. The temperature uniformity is good.

After the tempering process is completed under high vacuum, the treated workpiece is bright without color change.

Built-in heat exchanger and quick cooling function of air cooling cycle can effectively eliminate the temper brittleness of parts.

Convection heating device can ensure the uniformity of furnace temperature at low temperature.


Product features

1. The heating element is graphite, and the insulation layer is the thermal insulation structure of composite carbon felt and soft felt, which can ensure the temperature uniformity;

2. Built-in heat exchanger and forced air circulation cooling mode, uniform injection of gas, large flow, fast cooling speed;

3. The cooling fan is equipped with a frequency converter to achieve adjustable wind speed and better protect the power grid;

4. The furnace is equipped with interlocking functions such as temperature, pressure, water pressure and vacuum, with highly safe protection and prevention functions;

5. Equipped with functions such as remote control operation, remote fault diagnosis and remote program update;


Vacuum type tempering furnace characteristics:

(1) easy operation, manual/automatic free switch, can achieve automatic control, fully avoid human error in the process of work.

(2) it has a perfect alarm system, which can effectively protect the equipment.

(3) considering the characteristics of low heating temperature and large furnace charge required by the processing technology of some vacuum tempering furnaces, convection heating can be adopted. In the tempering process, the heating speed is fast and the average temperature is good.

(4) for the annealing treatment of some tubular, slender and thin-walled parts, it is recommended to choose the vertical loading or bottom loading structure, which can effectively solve the deformation problem.


Technical specifications

Model parameter

HVT-334S

HVT-446S

HVT-557S

HVT-669S

HVT-7711S

HVT-8812S

HVT-9915S

Effective hot zone W×H×L   mm

300×300×400

400×400×600

500×500×700

600×600×900

700×700×1100

800×800×1200

900×900×1500

Loading weight kg

75

250

400

600

1000

1200

1500

heating power kW

30

45

75

100

150

180

240

**Temperature °C

750

750

750

750

750

750

750

Furnace temperature uniformity °C

±5

±5

±5

±5

±5

±5

±5

Vacuum degree Pa

4×10-3/6×10-4

4×10-3/6×10-4

4×10-3/6×10-4

4×10-3/6×10-4

4×10-3/6×10-4

4×10-3/6×10-4

4×10-3/6×10-4

Pressure rise rate Pa/h

≤0.26

≤0.26

≤0.26

≤0.26

≤0.26

≤0.26

≤0.26

≤0.65

≤0.65

≤0.65

≤0.65

≤0.65

≤0.65

≤0.65

Air cooling pressure bar

2

2

2

2

2

2

2


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