Mumbai Vacuum Heat Treatment Unit
The Mumbai Vacuum Heat Treatment Unit, located in Vasai East (Dist. Palghar), began operations in Kandivali before shifting to its current, expanded plant. It serves the region's dense base of tooling, die-making, and general engineering customers with precise, distortion-free thermal processing.
Operating on a 24x6 schedule (with Sundays as our weekly maintenance day), the Mumbai unit delivers unparalleled technical expertise in heat treating various toolings, ensuring rapid turnaround and just-in-time deliveries.
Infrastructure
State-of-art vacuum hardening and tempering furnaces for just-in-time deliveries.
Plastic moulds, pressure die-casting dies, forging dies, sheet-metal stamping and blanking dies, tablet toolings and blades or cutters for a range of industries - the plant runs state-of-the-art vacuum hardening furnaces and vacuum tempering furnaces so that tooling goes back into production on just-in-time schedules rather than waiting in a queue.
The same unit also runs vacuum brazing, ageing, stress relieving, sub-zero treatment, low pressure and gas nitriding, and vacuum solutionizing - which means aerospace hardware, automotive parts and precision components from across the Maharashtra region can complete their whole thermal route at one address, on controlled cycles, with the record to match.
Vacuum Heat Treatment Services
Comprehensive vacuum heat treatment processes for toolings across industries.
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. Because nothing in the atmosphere reacts with the steel, distortion is lower and the result repeats batch after batch - which is what aerospace and precision-engineering drawings demand. It is the workhorse process at our Vasai East unit and, in most routes, the step before tempering. Explore the process →
Vacuum Tempering
Tempering follows hardening and takes the brittleness out of a freshly hardened part while holding the hardness you specified. Running 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.
Vacuum Annealing
Annealing softens material and removes internal stress before a part is machined or formed, which keeps tool life predictable and dimensions stable on the shop floor. In vacuum the part comes out clean and ready for the next operation instead of needing pickling. 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 a single clean furnace cycle - heat exchangers, sensor bodies, tool assemblies, multi-part stacks - with no flux and none of 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 on the drawing.
Vacuum Stress Relieving
Machining and welding leave stress locked in 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, stabilising size and improving wear life. Tooling, gauges and high-precision components benefit most.
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 must 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 after it - 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.
What Vacuum Heat Treatment Does for Your Part
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 aerospace hardware, precision components and tooling, where a finished surface must not be disturbed.
Our Vasai East unit brings that capability to the western side of Maharashtra - vacuum hardening, tempering, annealing, brazing, ageing, stress relieving, sub-zero treatment, low pressure and gas nitriding, and vacuum solutionizing, all at one address.
Materials and Parts We Treat at the Mumbai Unit
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 Vasai East: plastic moulds, pressure die-casting dies, forging dies, sheet-metal stamping and blanking dies, tablet toolings, blades and cutters, as well as aerospace hardware and automotive parts that have to come out clean and true to size.
How a Job Runs at the Mumbai Unit
- Send the details - part drawing or sample, material grade, required hardness or specification, quantity and required delivery date.
- We review and quote - the team confirms the process route and comes back with a quotation.
- Processing - the parts run in controlled cycles with the process parameters recorded.
- Dispatch - treated parts go back to you ready for the next operation.
Areas We Serve Across Maharashtra
The unit sits at # 3, Landmark Industrial Estate, Behind Suman Steel, Waliv Phata, Vasai (East), Dist. Palghar, which puts it within easy reach of Mumbai, Vasai, Virar, Palghar, Thane, Bhiwandi, Navi Mumbai and the wider Maharashtra industrial belt.
For plants across the western industrial belt, Vasai East is the closest Lakshmi Vacuum address for vacuum heat treatment, vacuum brazing and nitriding.
Vacuum Treatment Services at Mumbai - Frequently Asked
Where can I get vacuum heat treatment in Mumbai or Vasai?
Our Mumbai unit operates from # 3, Landmark Industrial Estate, Behind Suman Steel, Waliv Phata, Vasai (East), Dist. Palghar - 401 208, serving tool rooms, die-making and process industries across the Maharashtra industrial belt.
Which processes are available at the Mumbai unit?
The unit runs vacuum hardening, vacuum tempering, vacuum annealing, vacuum brazing, vacuum ageing, vacuum stress relieving, sub-zero treatment, low pressure nitriding, gas nitriding and vacuum solutionizing.
Do you offer sub-zero treatment and nitriding near Mumbai?
Yes. Sub-zero treatment, low pressure nitriding and gas nitriding all run at the Vasai East unit, alongside the vacuum hardening, tempering and brazing routes.
Is vacuum brazing available at the Mumbai unit?
Yes - vacuum brazing at Vasai 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.
What industries does the Mumbai unit serve?
Plastic moulds, pressure die-casting dies, forging dies, sheet-metal stamping and blanking dies, tablet toolings, and blades/cutters for a range of industries, alongside aerospace, automotive and precision engineering.
Can you process parts from Thane or Navi Mumbai?
Yes. The unit serves Mumbai, Vasai, Virar, Palghar, Thane, Bhiwandi, Navi Mumbai and the wider Maharashtra region, alongside the rest of our unit network.
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.
How do I request a quotation?
Send the details through our enquiry form and the team will come back with a quotation Request a quotation →
Vacuum Heat Treatment in Vasai and Maharashtra
The Mumbai unit began operations in Kandivali and subsequently relocated to its present, expansive plant in Vasai East (Dist. Palghar). Strategically positioned to serve the western industrial belt, we operate on a 24x6 schedule to ensure rapid turnaround for urgent tooling needs.
Modern vacuum hardening and tempering furnaces are installed at the unit, with annealing, stress relieving and age hardening also available, following the same process discipline and quality standards as our other facilities.
Nearby Vacuum Heat Treatment Units
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For components that need vacuum heat treatment in Mumbai, send us the requirement or talk to our engineers.