Lakshmi Vacuum Technologies manufactures advanced low pressure nitriding furnaces engineered to significantly enhance the surface hardness, wear resistance, and fatigue life of critical steel components. This process is vital for the automotive, aerospace, and tooling industries, particularly for high-stress parts like gears, crankshafts, and injection molds.
By operating at temperatures between 450–700°C in a controlled, low-pressure nitrogen-rich atmosphere (using Ammonia or N₂+H₂ mixtures), our furnaces diffuse nitrogen into the metal surface. This forms a hard, durable nitride layer without the environmental hazards of traditional salt bath nitriding and without causing surface oxidation.
Designed to meet stringent aerospace standards like AMS 2750, our systems feature precise temperature uniformity (±5°C) and advanced PLC/SCADA control. This guarantees highly repeatable metallurgical results, ensuring your components achieve exact case depths and superior mechanical properties every cycle.
| # | Parameter | Technical Details |
|---|---|---|
| 1 | Useful Working Area | 900 × 900 × 1200 mm / Customizable |
| 2 | Maximum Temperature | 700°C |
| 3 | Hot Zone | Graphite / All Metal |
| 4 | Vacuum Level | 1 × 10⁻² mbar |
| 5 | Charge Weight | 900 kg |
| 6 | Furnace Vessel | Carbon Steel / SS |
| 7 | Temperature Uniformity | ±5°C (AMS 2750) |
| 8 | No. of Zones | 1 or 3 Zones |
| 9 | Power Supply | 415V AC, 50 Hz, 3-phase |
| 10 | Process Gas | Ammonia (NH₃) and/or Nitrogen + Hydrogen |
| 11 | Control System | PLC, IPC with SCADA |
| 12 | Application | Automotive gears, aircraft landing gear, injection molds |
| 13 | Cooling System | Gas cooling (Nitrogen, Helium) |
Our engineers can customize working area, gas flow dynamics, and temperature uniformity to your exact process requirements.
Speak to ExpertSurface hardening of gears, crankshafts and transmission parts for higher load capacity, wear resistance and fatigue life.
H13 and other hot-work tooling treated for extended die life through a tough, wear-resistant nitride layer.
Wear and corrosion protection for moulds, extrusion screws and barrels where distortion must stay minimal.
Shafts, cylinders, pistons and valves hardened for combined wear and corrosion resistance.
Landing gear parts and flight hardware processed to AMS 2750-aligned standards with tight uniformity.
Camshafts, spindles and machine elements that need a hard surface with a tough core.
Nitrogen is diffused in a controlled low-pressure atmosphere using ammonia or N2+H2 mixtures - no salt bath handling, no environmental hazards, no surface oxidation.
Temperature uniformity of plus or minus 5°C with PLC/SCADA control delivers exact, repeatable case depths cycle after cycle.
Designed to meet standards such as AMS 2750, with graphite or all-metal hot zones and automated recipe control.
Commissioning, operator training, spares, thermocouple calibration and AMC from one integrated group.
Low pressure nitriding diffuses nitrogen into steel at 450-700°C in a controlled low-pressure atmosphere. Compared with salt bath nitriding it avoids hazardous salts and surface oxidation, and compared with conventional gas nitriding it gives tighter control of the atmosphere and case depth.
Typical materials include alloy steels, hot-work and cold-work tool steels, and certain stainless grades. Common parts include gears, dies, moulds, shafts and hydraulic components. Our engineers can advise on suitability for your specific steel.
Nitriding adds a hard, wear-resistant surface layer while keeping the core tough, and is often chosen where minimal distortion matters - for example on finished gears and dies.
Both. The Lakshmi Vacuum Group manufactures the furnaces and also runs nine vacuum heat treatment units across India where nitriding and related processes are offered as job work and production services.
Yes. Systems are built around PLC and SCADA controls with recipe management, and can be configured for manual, semi-automatic or fully automatic operation to fit your workflow.
A typical system offers a 900 x 900 x 1200 mm working area with 900 kg charge weight, with working area, hot zone and controls customised to your parts and volumes.
Still have questions? Talk to our engineers or request a quotation.