800–1300 °C
Vacuum Hardening
WhatAustenitising under high vacuum with a high-pressure nitrogen quench for a bright, through-hardened surface.
Used forTool & die steels (H11, H13, D2), dies, precision gears, aerospace parts.
Five vacuum furnaces running eight heat-treatment processes — bright, low-distortion results with full traceability for tool, aerospace and precision components.
Capabilities
What each process does — and where it is used.
WhatAustenitising under high vacuum with a high-pressure nitrogen quench for a bright, through-hardened surface.
Used forTool & die steels (H11, H13, D2), dies, precision gears, aerospace parts.
WhatFlux-free joining of assemblies in a single high-vacuum cycle — clean, oxide-free joints.
Used forHeat exchangers, hydraulic fittings, nozzle & sensor assemblies.
WhatControlled cool under vacuum to soften metal, relieve hardness and refine the grain structure.
Used forStainless steels, copper alloys, electrical & precision components.
WhatControlled reheat of hardened parts to balance hardness with toughness and stability.
Used forHardened tools, springs and structural components after hardening.
WhatLow-temperature soak that releases residual stresses from machining and welding.
Used forWelded fabrications, machined frames, precision housings.
WhatHigh-temperature soak followed by rapid quench to hold alloying elements in solid solution.
Used forStainless steels, nickel & aluminium alloys before ageing.
WhatTimed precipitation hardening that raises strength while retaining corrosion resistance.
Used forAluminium aerospace parts, Inconel & maraging steels.
WhatDeep cooling that transforms retained austenite for long-term dimensional stability.
Used forGauges, bearings, measuring tools and precision dies.
Equipment
FAQ
Our Hyderabad unit — Lakshmi Vacuum Heat Treaters Pvt. Ltd. — operates from IDA Jeedimetla, Phase V, Hyderabad, Telangana, right inside the city's aerospace, tooling and precision-engineering cluster.
Vacuum hardening, vacuum brazing, vacuum annealing, tempering, stress relieving, vacuum solutionizing, vacuum ageing and the sub-zero process — eight processes on five vacuum furnaces with full traceability.
Five vacuum furnaces, including a 12-bar high-pressure gas-quench furnace rated to 1300 °C and a vertical Ø 1000 mm furnace for long, shaft-type parts.
Part drawing or sample details, material grade, required hardness or specification, quantity and delivery date — enough for us to recommend the right cycle and revert with a quotation.
Our Commitment
Ensuring customer satisfaction through providing vacuum heat treatment service with customer-required quality and timely delivery — achieved through:
01
Continual improvement in the activities by setting objectives and targets.
02
Building risk-based thinking and process approach through training and motivation.
03
Satisfying applicable statutory and regulatory requirements.
Send Us Your Drawings
Share your part drawings and quantity — our team will recommend the right furnace cycle and revert with a quotation.