Industrial Vacuum Hardening Furnace by Lakshmi Vacuum
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Advanced Vacuum Hardening Furnaces

Lakshmi Vacuum Technologies manufactures high-performance vacuum hardening furnaces engineered for the precise heat treatment of steel and alloys. Our furnaces are essential for producing high-strength, durable components for the aerospace, automotive, and precision tooling industries.

By heating materials under a high vacuum, our furnaces prevent surface oxidation, decarburization, and contamination, ensuring bright, clean finishes without the need for post-treatment machining. The rapid high-pressure gas quenching (using Nitrogen or Argon) transforms the material's structure, achieving precise hardness and dimensional stability.

Equipped with advanced PLC/SCADA control systems, our vacuum hardening furnaces offer exceptional temperature uniformity and customizable cooling rates. This ensures consistent metallurgical properties and repeatability for every cycle, meeting the stringent demands of modern heat-treatment standards.

Vacuum Hardening Furnace Interior Hot Zone

How It Works

Definition

Hardens steel and alloys by heating under vacuum and rapidly cooling using high-pressure gas quenching.

Working Principle

Material heated to austenitizing temperature in vacuum, then quenched with inert gas for hardness and structural transformation.

Technical Specifications

# Parameter Technical Details
1Useful Working Area900 × 900 × 1200 mm / Customizable
2Maximum Temperature1250°C
3Hot ZoneGraphite / All Metal
4Vacuum Level1 × 10⁻² mbar (10⁻⁶ if required)
5Charge Weight900 kg
6Furnace VesselCarbon Steel / SS
7Max Quenching Pressure6 / 10 / 12 / 15 bar or oil quench
8No. of Zones1 or 3 Zones
9Power Supply415V AC, 50 Hz, 3-phase
10Control SystemPLC, IPC with SCADA
11ApplicationTool steels, dies, aerospace parts, precision components
12Cooling SystemHigh-pressure inert gas quenching (N₂ / Ar)
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