Lakshmi Vacuum Technologies manufactures high-performance vacuum hardening furnaces engineered for the precise vacuum 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.
| # | Parameter | Technical Details |
|---|---|---|
| 1 | Useful Working Area | 900 × 900 × 1200 mm / Customizable |
| 2 | Maximum Temperature | 1250°C |
| 3 | Hot Zone | Graphite / All Metal |
| 4 | Vacuum Level | 1 × 10⁻² mbar (10⁻⁶ if required) |
| 5 | Charge Weight | 900 kg |
| 6 | Furnace Vessel | Carbon Steel / SS |
| 7 | Max Quenching Pressure | 6 / 10 / 12 / 15 bar or oil quench |
| 8 | No. of Zones | 1 or 3 Zones |
| 9 | Power Supply | 415V AC, 50 Hz, 3-phase |
| 10 | Control System | PLC, IPC with SCADA |
| 11 | Application | Tool steels, dies, aerospace parts, precision components |
| 12 | Cooling System | High-pressure inert gas quenching (N₂ / Ar) |
H13, D2, M2 and other tool steels hardened bright and clean, with controlled gas quenching for the right hardness and toughness balance.
Flight hardware hardened under vacuum with full process documentation and repeatable metallurgical results.
Dies, punches and transmission parts that demand consistent hardness from batch to batch.
Drills, taps, broaches and milling cutters processed with controlled cooling to manage distortion.
Plastic moulds and precision parts hardened without scaling, decarburisation or post-treatment machining.
Gears, shafts and machine elements requiring clean, repeatable vacuum hardening.
Heating under high vacuum keeps surfaces bright and clean - no post-hardening machining or cleaning is required.
High-pressure nitrogen or argon quenching with selectable pressures lets you match the cooling rate to section size and hardenability.
Multi-zone uniformity and PLC/SCADA recipe control deliver the same result cycle after cycle.
The group runs its own hardening, tempering and nitriding lines across nine Indian cities - 450+ furnaces delivered since 2003.
Vacuum hardening heats steel to its austenitising temperature under high vacuum, then rapidly cools it with high-pressure inert gas. The process produces a hard, wear-resistant structure with bright, contamination-free surfaces.
Carbon steels, alloy steels, tool steels, high-speed steels and stainless steels are commonly processed. The correct cycle depends on the material grade, section size and required hardness.
Gas quenching in vacuum avoids oil handling, smoke and post-cleaning, and gives precisely controllable cooling rates for minimal distortion. Modern high-pressure gas quenching covers a wide range of hardenability requirements.
Systems are configured with high-pressure gas quenching with selectable pressure levels - the right maximum pressure is chosen based on your materials and load sizes.
Yes. Vacuum tempering, annealing and other sub-critical cycles can be run in the same furnace, and combined hardening-plus-tempering workflows are used across our own heat treatment units.
Yes. Nine Lakshmi Vacuum heat treatment units across India can process your parts as job work, so you can evaluate results before configuring your own system.
Still have questions? Talk to our engineers or request a quotation.