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Vacuum Tempering Furnace
The vacuum tempering furnace is a device used to temper quenched workpieces in a vacuum environment. It prevents oxidation and decarburization, eliminates internal stresses, and adjusts hardness and toughness. It is suitable for mold steels and stainless steels. It is widely used in aerospace, precision manufacturing, and other fields. Tempering is often used in conjunction with quenching processes.
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Structural features of
Vacuum Tempering Furnace
Starting from the internal structure, we show you the unique design logic of vacuum tempering furnace products:
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Chamber and heating
The heating chamber consists of graphite heating body, graphite soft felt and hard felt.
The heat field can also be heated by high-temperature molybdenum strips and the chamber can be heated by molybdenum foil heat insulation screens, which are free of volatilization, impurities and pollution.
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Air cooling system
The rear part of the chamber body consists of a high-pressure impeller converter, a multi-stage copper heat exchanger and a high-efficiency air duct guide device.
During air cooling, high-purity nitrogen or argon is introduced. Driven by the high-speed impeller blower, the gas is drawn into the impeller through the high-efficiency copper heat exchanger. After being deflected by the impeller, it is sprayed from the graphite nozzle toward the workpiece through the air duct guide device, ensuring uniform forced cooling of the workpiece.
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Appearance design
The material table is composed of graphite pillars, graphite hearth, and Al2O3 spacers on the hearth. This structure can prevent the material tray and graphite hearth from sticking together at high temperatures.
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Control system
PLC automatic control system, the human-machine interface adopts high-definition touch screen, and has a built-in operating system developed by us.Programmable temperature control instrument PID adjustment.
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Application features of
Vacuum Tempering Furnace
Focusing on actual scene applications, we will highlight the advantages of vacuum tempering furnace equipment functions for you:
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The ultimate vacuum degree
7x10-1pa.
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The maximum temperature
1350℃
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Air cooling pressure
1-10bar can be adjusted.
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Maximum cooling rate
The empty furnace cools from 1150°C to 250°C in less than 7 minutes. (cooling water temperature is less than 35°C)
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Security system
Upper limit alarm, deviation alarm, automatic stop at the end of program operation, no need for human supervision.
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Application industry of
Vacuum Tempering Furnace
Vacuum tempering furnaces can cover multiple fields and demonstrate their cross-industry adaptability and practical value:
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Aerospace industry
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High-end mold production
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Medical device manufacturing
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Automotive manufacturing
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Electronics industry
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3D printing additive manufacturing
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Applied Materials of
Vacuum Tempering Furnace
Aiming at the characteristics of various materials, the core advantage of the product is its compatible processing:
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Tool steel
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Die steel
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Elastic alloy
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Stainless steel
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FAQ
Focus on answering common questions to provide users with clear and practical usage guidelines:
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Q:Does the workpiece require any further processing after vacuum tempering?
A:Typically, no additional cleaning is required (no scale or oil stains). If surface finish adjustment is required, light polishing may be performed. Important components require testing for properties such as hardness and internal stress.
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Q:Can tempering be used in conjunction with quenching?
A:Yes, and this is a common combination. After quenching, the workpiece can be directly tempered to avoid exposure to air and oxidation, ensuring the continuity and stability of the heat treatment process. For example, Bona Thermal's Vacuum Quenching Furnace can simultaneously handle quenching, tempering, and annealing processes.
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Parameters of
Vacuum Tempering Furnace
Present performance details with accurate data, intuitively showing the core technical specifications of the vacuum tempering furnace:
| Types | Working Zone (Width x Height x Depth)mm |
Maximum Temperature(℃) | Heating Element | Furnace Capacity(kgs) | Temperature Uniformity(℃) | Power(KW) | Ultimate Vacuum Degree(Pa) |
|---|---|---|---|---|---|---|---|
| BR-QCL-334G | 300X300X450 | 1350 | Graphite | 100 | ±5 | 50 | 7x10-1 |
| BR-QCL-446G | 400X400X600 | 1350 | Graphite | 200 | ±5 | 80 | 7x10-1 |
| BR-QCL-557G | 500X500X700 | 1350 | Graphite | 300 | ±5 | 120 | 7x10-1 |
| BR-QCL-669G | 600X600X900 | 1350 | Graphite | 500 | ±5 | 150 | 7x10-1 |
| BR-QCL-8812G | 800X800X1200 | 1350 | Graphite | 900 | ±5 | 260 | 7x10-1 |
| Types | Working Zone (Width x Height x Depth)mm |
Maximum Temperature(℃) | Heating Element | Furnace Capacity(kgs) | Temperature Uniformity(℃) | Power(KW) | Ultimate Vacuum Degree(Pa) |
|---|---|---|---|---|---|---|---|
| BR-QCL-334M | 300X300X450 | 1350 | Molybdenum foil | 100 | ±5 | 50 | 7x10-1 |
| BR-QCL-446M | 400X400X600 | 1350 | Molybdenum foil | 200 | ±5 | 80 | 7x10-1 |
| BR-QCL-557M | 500X500X700 | 1350 | Molybdenum foil | 300 | ±5 | 120 | 7x10-1 |
| BR-QCL-669M | 600X600X900 | 1350 | Molybdenum foil | 500 | ±5 | 150 | 7x10-1 |
| BR-QCL-8812M | 800X800X1200 | 1350 | Molybdenum foil | 900 | ±5 | 260 | 7x10-1 |
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Vacuum Tempering Furnace
Production Process
Control of all links from raw materials to finished products:
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1.Materials:
Stainless steel sheets and high-temperature-resistant alloys are selected, meeting vacuum sealing and load-bearing standards.
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2.Cutting:
Cut raw materials according to design drawings using specialized equipment to ensure dimensional tolerances.
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3.Press Brake:
Bends and forms the sheet metal, processing the furnace shell and chamber components with a bending angle accuracy of ±1°.
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4.Machining:
Lathes are used to process precision components such as flanges and connectors, ensuring surface roughness control.
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5.Welding:
Weld the furnace body welds, ensuring airtightness on key components, and perform post-weld inspection.
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6.Steel sheet Metal:
Grinds and trims welded components to ensure a smooth appearance without sharp edges.
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7.Painting:
Electrostatically sprays the furnace shell and dries it.
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8. Assembly:
Install the vacuum system, heating element, temperature control module, cooling system, and tighten connectors.
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9.Testing:
Conduct vacuum tests, temperature rise tests, and safety checks.
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10.Packaging:
Internally cushioned with pearl cotton, externally covered with waterproof film and wooden crates, with anti-collision markings and equipment parameter labels.