Introduction:

Vacuum tempering furnace is a specialized heat treatment equipment designed for tempering metal workpieces after quenching in a vacuum environment. Its core function is to eliminate internal stresses in workpieces generated during quenching, stabilize their microstructure, and adjust mechanical properties (such as reducing brittleness and improving toughness) through precise control of temperature and holding time. Meanwhile, it maintains the surface cleanliness and performance stability of the workpieces.

Main Advantage

1.Reduction of oxidation and decarburization: Heating in a vacuum environment can significantly reduce oxidation and decarburization on the material surface. This is because the absence of air means a lack of oxygen, thereby avoiding oxidation reactions, maintaining the surface quality of workpieces, and stabilizing the chemical composition inside the material.

2.Improvement of surface finish: Due to reduced oxidation, materials generally retain good surface finish after vacuum tempering, which is particularly important for precision parts requiring high surface quality.

3.Enhancement of material toughness and plasticity: Vacuum tempering can alter the internal lattice structure of materials, reduce internal defects, and thus improve the toughness and plasticity of materials.

4.Reduction of contamination: Since the treatment is carried out in a closed vacuum environment, it can effectively prevent pollutants in the environment from adhering to workpieces, resulting in a purer treatment effect.

5.Improvement of material corrosion resistance: Vacuum tempering can remove oxides and other substances inside the material, thereby enhancing the material’s corrosion resistance and chemical stability.

6.Environmental friendliness: The vacuum tempering process emits almost no harmful gases, has little impact on the environment, and is a more environmentally friendly heat treatment method.

7.Enhancement of material dimensional stability: The coefficient of expansion of materials in a vacuum environment is smaller, enabling materials to have better dimensional stability after heat treatment.

Related Configuration

1.Heating Chamber

Heating Chamber : Circular/ Square

Heating Element :Nickel-Chromium Alloy

1.The heating chamber is composed of a stainless steel frame, thermal insulation layer, heating elements, insulating components, and a furnace bed. This structure offers advantages such as uniform heating, high thermal efficiency, rapid heating and cooling, high temperature control precision, strong adaptability, long-term stability, excellent durability, safety, energy conservation, and emission reduction.

2.Vacuum system

Well-known domestic and foreign vacuum pump brands, such as EVP, Leybold, etc., are matched according to customer needs.

3.Control system

The operation control of this equipment is performed by the Siemens S7-1200 programmable logic controller. Interlock protection control is adopted for the equipment’s vacuum pump, valves, heating power supply, cooling fan, and other components. The system can judge and alarm abnormalities occurring during equipment operation, enabling fully automatic control. The network system supports remote network control and data transmission functions. All low-voltage components use international brands such as Siemens, Schneider, and Phoenix, which are highly reliable in terms of quality, performance, and craftsmanship, reducing the failure rate of the control system.

●The network system supports remote network control and data transmission functions.

●Remote fault diagnosis, remote process debugging, etc.

●Supports software upgrade and update.

4.Other System

Our temperature measurement system adopts a nine-point temperature measurement method to monitor product temperatures in real-time and accurately, ensuring the uniformity of furnace temperature is maintained within the range of ±3℃ – ±5℃; the pneumatic system supports automated control via a touchscreen, enabling pneumatic control of the entire gas circuit; the inflation system can be set up once with no need for further adjustments, as on-off control is achieved through solenoid valves, making it simple, convenient, and easy to adjust; an independent water cooling system is equipped, mainly used to control the temperature of the furnace body, vacuum pump, and heating electrodes to maintain the normal operation of the vacuum furnace.

After-Sales and Acceptance Services

After the completion of production, the manufacturing plant will conduct  factory acceptance test, including:

1.Ultimate vacuum test

2.Pressure rise rate test

3. Inspection of the completeness of all equipment systems

After the equipment is delivered to the user’s site, site acceptance test will be carried out, including:

1. Overall installation

2.Overall debugging

3.User training

4.Document handover

Warranty

The warranty period is one year from the date of final acceptance. It covers non-human-damaged components (excluding consumables/wear parts), as well as manual maintenance services and transportation costs incurred during the warranty period.

We have an independent after-sales service department that provides users with timely services and guarantees a 24-hour rapid response.