Horizontal Vacuum Tempering Furnace

After vacuum quenching, metal parts may require tempering to reduce residual stress and achieve the required balance of hardness and toughness. The workpieces are loaded into the furnace chamber, where the chamber is evacuated before controlled heating begins.

During the tempering cycle, the workpieces are heated to the required process temperature and held for a specified time according to the material and heat treatment process. The vacuum environment helps reduce oxidation and surface discoloration during heating.

After the holding stage, the workpieces are cooled according to the selected process before unloading. Temperature, holding time, vacuum conditions and cooling requirements can be configured according to the workpiece and production process.

The horizontal vacuum tempering furnace is designed with a sealed vacuum chamber and controlled heating system to provide a clean and stable environment for tempering after quenching. Uniform heating throughout the effective working zone helps achieve consistent heat treatment results across the furnace load.

Depending on the workpiece material and tempering process, the furnace can be configured for different operating temperatures and vacuum levels. Low-temperature tempering configurations may also use gas circulation or convection-assisted heating to improve heating efficiency and temperature uniformity.

Typical reference configuration:
• Operating temperature: approximately 200–700°C for conventional tempering applications, with higher-temperature configurations available according to process requirements
• Temperature uniformity: typically around ±3–5°C, depending on furnace size and operating conditions
• Vacuum system: configured according to the required working vacuum and process
• Cooling: vacuum or protective-gas cooling configuration available according to process requirements
• Heating zone and loading capacity: customized according to workpiece dimensions and production capacity

Actual technical specifications are determined according to the material, workpiece size, tempering temperature, loading capacity and required heat treatment process.

The furnace chamber and internal structure can be designed according to the required working temperature, effective heating zone, loading capacity and vacuum heat treatment process.

After the tempering and holding cycle is completed, the workpieces are cooled under controlled conditions according to the required heat treatment process. Depending on the application, the furnace can be configured with vacuum cooling or protective-gas cooling to help maintain a clean workpiece surface and stable processing results.

The control system provides automatic management of heating, temperature holding, vacuum and cooling stages. Process parameters such as temperature, holding time and heating program can be set according to different materials and heat treatment requirements.

Typical control and cooling features:
• Programmable automatic heat treatment cycles
• Multi-stage heating and temperature holding control
• Temperature monitoring and process control
• Vacuum monitoring during the treatment cycle
• Configurable cooling method according to process requirements
• Alarm and safety protection functions
• Process parameters can be adjusted for different workpieces and materials

PLC, temperature controller, HMI and other electrical components can be configured according to project requirements.

The following specifications are reference configurations for the Horizontal Vacuum Tempering Furnace. Furnace size, heating power, working temperature, vacuum system and loading capacity can be customized according to the workpiece and heat treatment process.

Maximum Temperature: 1200°C
Rated Heating Power: 66 kW / 133 kW / 155 kW

Available Reference Loading Sizes:
• 900 × 600 × 600 mm (D × W × H)
• 1200 × 800 × 800 mm (D × W × H)
• 1200 × 900 × 900 mm (D × W × H)

Corresponding Air Guide Duct Sizes:
• Ø1000 × 1000 mm (Diameter × Depth)
• Ø1300 × 1200 mm (Diameter × Depth)
• Ø1400 × 1200 mm (Diameter × Depth)

Final furnace dimensions, heating power, vacuum configuration and loading capacity are determined according to the customer's workpiece and process requirements.

Rexin Horizontal Vacuum Tempering Furnace is mainly designed for tempering metal components after quenching where controlled heating, reduced oxidation and a clean surface finish are required.

Typical materials and workpieces include:
• Tool steel and die steel – molds, dies and cutting tools
• Alloy steel – gears, shafts, bearings and mechanical components
• High-speed steel – cutting tools and precision tooling
• Stainless steel – selected components requiring controlled heat treatment
• Precision metal parts – components requiring stable temperature control and reduced surface oxidation

Typical industries include:
• Tool and mold manufacturing
• Automotive components
• Machinery manufacturing
• Bearing and gear production
• Precision metalworking

Material grade, previous heat treatment condition, required hardness and tempering temperature should be confirmed before furnace configuration.

Rexin can customize the Horizontal Vacuum Tempering Furnace according to different workpieces, heat treatment processes and production requirements.

Customizable configurations may include:

• Furnace chamber and loading dimensions
• Heating power and operating temperature
• Vacuum system configuration
• Cooling method and cooling configuration
• Loading capacity and production requirements
• Temperature control and process programming
• Electrical and control system configuration

To recommend a suitable furnace configuration, please provide your material, workpiece dimensions, maximum loading weight, tempering temperature, required production capacity and any special process requirements.

Our engineers will evaluate the application and prepare a suitable technical proposal based on the actual production requirements.

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Rexin provides industrial furnace solutions from process evaluation and furnace design to manufacturing, delivery and after-sales support.

18+ Years Experience
Professional experience in industrial furnace and heat treatment equipment manufacturing.

Customized Furnace Solutions
Furnace size, heating system, atmosphere or vacuum system, control configuration and production capacity can be customized according to different heat treatment requirements.

Manufacturing & Quality Control
Equipment is manufactured and assembled in our factory with inspection and testing before delivery.

Technical & After-Sales Support
From requirement review and technical proposal to manufacturing, delivery, installation guidance, training and after-sales support.

Rexin is committed to quality control throughout furnace design, manufacturing, assembly and testing. Our certifications and quality management practices support reliable industrial furnace manufacturing and consistent equipment quality.

Each furnace is inspected and tested before delivery according to the agreed technical requirements.

1. What is a horizontal vacuum tempering furnace used for?

A horizontal vacuum tempering furnace is mainly used for tempering metal parts after quenching. The process helps reduce residual stress, improve toughness and achieve the required mechanical properties while reducing oxidation and surface discoloration.

2. What materials can be treated in a vacuum tempering furnace?

The furnace can be used for various metal components made from tool steel, die steel, alloy steel, high-speed steel and selected stainless steels. Typical workpieces include molds, dies, gears, shafts, bearings, cutting tools and precision metal parts.

3. What is the maximum operating temperature?

The reference maximum temperature for this Horizontal Vacuum Tempering Furnace is 1200°C. The actual operating temperature and furnace configuration should be selected according to the material and heat treatment process.

4. Can the furnace size and loading capacity be customized?

Yes. The furnace chamber, loading dimensions, heating power, vacuum system, cooling configuration and control system can be customized according to the workpiece size, loading weight, production capacity and process requirements.

5. What information should I provide to select a suitable vacuum tempering furnace?

Please provide the material grade, workpiece dimensions, maximum loading weight, required tempering temperature, production capacity and any special heat treatment requirements. Rexin engineers can then recommend a suitable furnace configuration.

6. Can Rexin provide a complete technical proposal and quotation?

Yes. Based on your workpiece and process requirements, Rexin can prepare a customized furnace configuration, technical proposal and quotation for your project.

Need a Vacuum Tempering Furnace for Your Application?

Send us your material, workpiece size, loading capacity and heat treatment requirements. Our engineers will recommend a suitable furnace configuration.

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