Vacuum Heat Treatment Unit in Peenya, Bengaluru
Lakshmi Vacuum Heat Treaters has been offering vacuum heat treatment solutions and services for more than two decades. Backed by an experienced team of metallurgists, we continually improve our processes and furnaces by working with customers and industry experts to deliver superior vacuum heat treatment services in Bengaluru and across Karnataka.
Industries across Bangalore rely on our Peenya unit for vacuum hardening, brazing, annealing and nitriding — from tool rooms in Peenya, Yeshwanthpur and Rajajinagar to component makers in Bommasandra, Jigani and Nelamangala. The facility is equipped with a sophisticated, automated in-house laboratory and fully automated vacuum heat treatment furnaces, ensuring precise thermal cycles and consistent metallurgical results across every batch processed.
The unit supports vacuum hardening and tempering, vacuum brazing, vacuum annealing and stress relieving, and dewaxing and sintering for tool and die, aerospace, automotive and general engineering components.
Our Vacuum Heat Treatment Services
Vacuum Hardening
Hardening in a vacuum furnace heats the part in an oxygen-free chamber, so the surface stays bright and free of scale and the part comes out dimensionally stable. With nothing in the atmosphere reacting with the steel, distortion is lower and the same result repeats batch after batch - which is what machine-tool, aerospace and tooling work from the Peenya belt demands. It is the workhorse process at our Bengaluru unit and, in most routes, the step before tempering. Explore the process →
Vacuum Tempering
Tempering runs straight after hardening and takes the brittleness out of a freshly hardened part while holding the hardness you specified. Doing it under vacuum keeps the surface clean, so nothing gained in hardening is lost. The result is the balance most drawings ask for: hard enough to resist wear, tough enough to survive shock and fatigue in service.
Vacuum Annealing
Annealing softens material and removes internal stress before a part is machined or formed, which is what keeps tool life predictable and dimensions stable on the shop floor. Run in vacuum, the part comes out clean and ready for the next operation instead of needing a pickling step. It is a common first stop for forgings, castings and bar stock heading for a hardening route. Explore the process →
Vacuum Brazing
Vacuum brazing joins an assembly in one clean furnace cycle - heat exchangers, sensor bodies, tool assemblies, multi-part stacks - without flux and without the corrosive residue flux leaves in internal passages. The vacuum cleans the surfaces as the temperature rises, so the filler flows into tight joints and produces a strong, leak-tight connection. Assemblies come out bright and need no post-braze cleaning. Explore the process →
Vacuum Ageing
Ageing is how strength is reached in aluminium, nickel and other precipitation-hardening alloys: a controlled soak that grows the strengthening phases without the distortion of a quench. Under vacuum the surface stays clean and the properties come out uniform across the batch. It is often the final step that locks in the numbers written on the drawing.
Vacuum Stress Relieving
Machining and welding both leave stress locked inside the material, and that stress is what makes a part move after the last cut. Stress relieving in vacuum releases it, so geometry holds through grinding, fitting and assembly. On long or thin parts - shafts, plates, weldments - it is the difference between a component that measures true and one that keeps drifting.
Sub-Zero Treatment
After hardening, some retained austenite never transforms on its own, and it keeps changing dimensions long after the part was measured. A sub-zero cycle takes the part below zero to complete that transformation, which stabilises size and improves wear life. Tooling, gauges and high-precision components benefit most.
Plasma Ion Nitriding
Plasma ion nitriding builds a hard, wear-resistant case on the surfaces that do the work, with minimal distortion because it runs far below hardening temperature. There is no white layer to grind away, so the part keeps its finish, and masked areas stay soft for later machining. Dies, gears and engine components that cannot be re-machined after treatment are the classic candidates.
Low Pressure Nitriding
Low pressure nitriding gives close control over case depth and surface quality by running the process at reduced pressure, cycle after cycle. That repeatability is what production lines need when the same part is treated week after week and case depth is a drawing requirement rather than a suggestion. Explore the process →
Gas Nitriding
Gas nitriding builds a deep, hard case with strong load-bearing support underneath - the combination that lets heavily loaded parts keep running instead of breaking down at the surface. It suits components where the service load is high and the surface has to resist both wear and scuffing.
Vacuum Solutionizing
Solutionizing takes stainless and superalloy parts to the right temperature in vacuum to dissolve the alloying elements, then quenches them into a uniform starting structure. Everything that follows - ageing, machining, service performance - depends on this step being clean and even. Because it runs in vacuum, the surface stays oxide-free and the chemistry at the surface matches the core.
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Awards and Appreciation
Vacuum Heat Treatment in Bengaluru
Vacuum heat treatment means heating and cooling metal inside a chamber with the air taken out. With no oxygen present the surface cannot oxidise or decarburise, so parts come out bright, clean and true to size instead of scaled and out of tolerance. That is why vacuum processing has become the default for tools, dies, aerospace hardware and precision components where a finished surface must not be disturbed.
Our Peenya unit brings that capability to Bengaluru's manufacturing belt - vacuum hardening, tempering, annealing, brazing, ageing, stress relieving, sub-zero treatment and three routes for nitriding, all at one address, on controlled cycles, with the record to match.
Materials and Parts We Treat
We treat tool and die steels, alloy and stainless steels including PH grades, nickel and cobalt alloys, aluminium and titanium alloys, copper and brass, and powder-metal or sintered parts.
Typical work arriving at Peenya: machine-tool and fixture components, sheet-metal tooling, die-casting dies, gears and shafts, pump and motor parts, aerospace hardware, sensor bodies and brazed assemblies.
Areas We Serve Across Karnataka
The unit sits at Peenya Industrial Area, serving Peenya, Nelamangala, Bommasandra, Jigani, Electronics City, Hosur Road, Mysore Road, North Bengaluru and the whole of Karnataka.
Batches travel from Mysuru, Tumakuru, Ramanagara, Mandya, Hassan, Chikkaballapur, Kolar, Davanagere, Chitradurga, Shivamogga, Hubballi-Dharwad, Belagavi, Mangaluru, Udupi, Hosapete, Ballari, Kalaburagi, Vijayapura, Raichur and Bidar. Work also travels in from other states based on process needs and timelines.
How a Job Runs at the Bengaluru Unit
Part drawing, material grade, hardness spec, quantity, and delivery date.
Our team confirms the process route and provides a quotation.
Parts run in controlled cycles on automated vacuum furnaces.
Treated parts go back to you ready for the next operation.
Find Our Bengaluru Facility
Bengaluru Unit
Address:
Lakshmi Vacuum Heat Treaters Pvt. Ltd.
No. 27 & 28, 5th Main, 3rd Phase,
Peenya Industrial Area,
Bengaluru - 560 058, Karnataka, India
Industries Served:
Machine tools, Aerospace, Automotive, Pumps & Motors, General precision engineering.
Vacuum Heat Treatment in Bengaluru — FAQs
Where can I get vacuum heat treatment in Bangalore or Bengaluru?
Our Bengaluru unit is at No. 27 & 28, 5th Main, 3rd Phase, Peenya Industrial Area, Bengaluru 560 058, in the middle of the city's manufacturing belt and alongside the group's vacuum furnace manufacturing floor.
Which processes run at the Peenya unit?
The unit runs vacuum hardening, vacuum tempering, vacuum annealing, vacuum brazing, vacuum ageing, vacuum stress relieving, sub-zero treatment, plasma ion nitriding, low pressure nitriding, gas nitriding and vacuum solutionizing.
Do you take job work and outsourced batches?
Yes. The Peenya unit takes job work and outsourced batches of components for customers across Bengaluru and the surrounding industrial belts, running on in-house laboratory support and fully automated vacuum furnaces.
Is vacuum brazing available in Bengaluru?
Yes - vacuum brazing at the Peenya unit joins heat exchangers, sensor bodies, tool assemblies and multi-part stacks in one clean furnace cycle, with flux-free joints that need no post-braze cleaning.
Can you process parts from Nelamangala, Bommasandra or Jigani?
Yes. The unit serves the whole Bengaluru belt - Peenya, Nelamangala, Bommasandra, Jigani, Electronics City, Hosur Road, Mysore Road and North Bengaluru - alongside the rest of our unit network.
What industries does the Bengaluru unit serve?
Machine tools and tooling, aerospace hardware, automotive components, pumps and motors, and general precision engineering - the sectors that make up the Peenya and Nelamangala industrial belts.
What do I need to send for a quotation?
Part drawing or sample details, material grade, required hardness or specification, quantity and required delivery date are enough for us to quote.
Which areas of Bangalore do you serve?
We serve customers across Bangalore — Peenya, Yeshwanthpur, Rajajinagar, Nelamangala, Bommasandra, Jigani, Electronic City and Hosur Road — and the whole of Karnataka since 2003.