MIL-Spec castings for weapons, ammunition, communication, and more
Vimax Technocast is a defence investment casting company in India, producing a range of as-cast and machined defence components. Every part is produced to MIL-Spec requirements and aligns with VDG P690 D1/D2 for superior tolerances. Robust internal testing ensures products not only meet technical requirements but also achieve product-application fit.
At Vimax, we provide end-to-end manufacturing with enhanced traceability for private contractors, public defence contractors, and national military establishments. Our defence castings are designed to align with domestic and international standards, and we export to leading destinations.
Our Portfolio of Defence Investment Castings
As defence component casting manufacturers, we have an expansive and growing portfolio. Here are the components we currently manufacture.
Ammunition Components
Shell casings, Fragmentation sleeves, Missile guidance housings, Missile fins
Weapons System Components
Firearm bodies, Triggers, Trigger housings, Bolt carriers, Safeties, Scope mounts, Magazine latches, Firing mechanism components
Communication Components
Signal enclosures, Antenna brackets, Heat sinks, Protective housings
Surveillance Components
Radar array supports, Mounting frames, Sensor covers, Waveguide components
Armored Vehicle Components
Turret brackets, Gearbox housings, Suspension arms, Track connectors
Naval Defence Components
Propellers, Impellers, Valve bodies, Pump housings
Aircraft Defence Components
HPT blades, Nozzle guide vanes, Rotor segments, Engine mounts, Pylon brackets, Structural lugs, Control system parts
Technical Details
Important technical details of our defence component investment castings
| Particulars | Details & Specifications |
|---|---|
| Shell building media | Ceramic, Stucco |
| Nominal size range | 35 mm-5 m |
| Casting weight range | 0.5-150 kg |
| Wall thickness range | 1.5 mm-100 mm |
| Machining allowance | 1.5-2.5 mm |
| Tolerance range | DCTG 4-7, GCTG 3-6 |
| Surface roughness range | N9-N7 (Ra 6.3-1.6 μm) |
| Surface treatment | Electropolishing, Passivation, Powder Coating, Shot blasting |
| Materials | 304L & 316L SS, 17-4 PH, Hastelloy, Inconel, A 356 & 357, Stellite 21, HS-25, Titanium alloys, Copper & Bronze alloys |
| Industry standards | MIL-Spec, AS 9100 |
Our Investment Casting Process for Defence Components
As defence component casting manufacturers, we use modern lost-wax casting procedures to produce as-cast and machined components.
Molding and investing
- Investing wax molds in a ceramic slurry for a wet coat (smaller components are attached to a sprue for investing)
- Placing the molds/trees in a rainfall sander for even stucco distribution.
- Up to 12 coats and drying cycles for creating robust ceramic casts.
Cast preparation and pouring
- Introducing ceramic casts into autoclaves to remove moisture and wax.
- Collecting the molten wax for recycling and reuse.
- Pouring molten alloy into the hollow negative cavity.
- Letting the alloy cool down, settle gradually, and take shape.
Casting tree break-out and initial separation
- Knocking out ceramic shells to extract the parts.
- Separating each component from the tree.
- Fettling and deburring stubs and sharp edges.
Planning machining allowance and setup
- Identifying and marking the requisite surfaces.
- Assessing the degree and type of machining required.
- Finalizing fixtures to minimize local distortions.
Primary and secondary machining
- Rough milling, facing, and drilling the as-cast components.
- Additional machining for edges and mating faces.
- Part-specific secondary operations (threading, honing, broaching), as required.
Quality Assurance & Testing Procedures
Quality control measures and inspection procedures help ensure consistent output, dimensional accuracy, and minimal scrappage.
- Heat numbers: UIDs mapped to autoclaves and furnaces.
- Shell IDs: Batch-based ceramic shell tagging.
- Part-level Identifiers: Order number- or serial number-based UIDs
- Stage-wise inspection: Operator- or process-based flaw detection and rectification.
- Final inspection: Microstructure examination; spectrometric, stress, hardness, and toughness testing; dye penetrant and other non-destructive testing.
Why Choose Us as Defence Component Casting Manufacturers
Defence contractors and manufacturers across 12+ countries work with us for precision defence investment casting and component manufacturing.
- DFM & rapid prototyping: In-house design team that simplifies design to reduce time-to-production and time-in-production.
- CAD-to-part execution: 360-degree production support, from design to delivery.
- Modern infrastructure: Rainfall sanders, fluidized beds, autoclaves, and dual induction furnaces for better ‘as-cast’ output.
- Best-in-class machinery: Three- and four-axis VMCs, HMCs, lathes, vertical turrets, and tapping machines running on FANUC and Mitsubishi.
- Technical capabilities: Experienced in matching MIL-Spec requirements and providing tight tolerances in line with ISO 8062 and VDG P690. Multi-stage inspection for dimensional and geometric accuracy.
- Export readiness: We supply defence investment castings to the US, Canada, the UK, France, Italy, Spain, Germany, Poland, South Africa, Japan, Australia, and other international markets.
- Sustainable manufacturing: 1.5 MW solar power plant to meet up to 60% of our energy needs, lower carbon emissions, and help clients meet their Scope 3 requirements.
“We had very specific requirements for bullet shells, triggers, and safeties. Vimax was able to not only produce them all, but also match our exact requirements. Our trial run has matured into a 2-year working relationship, and we look forward to continuing this partnership in the future.”
CEO
Defence Contractor, U.S.A.
Ready to Discuss Your Defence Investment Casting Requirements?
Whether you are sourcing a new component or evaluating an existing design, a technical consultation is the best place to start.
FAQs
Do you manufacture defence investment castings according to customer-specific parameters?
While we have standard parameters based on years of producing defence castings, we can also cast components according to your weight, size, and wall-thickness requirements. For confirmation, please submit an RFQ.
Can you manufacture using custom alloys?
Yes, we regularly produce investment castings for defence components using custom and exotic alloys, including Inconel, Hastelloy, René and other challenging materials.
What firearm platforms do you support for defence component casting?
We support AR-15, AK, and P1167-style platforms by default but have the experience of supporting niche platforms too. For additional details, please reach out to us.
What is your MOQ for defence component casting?
Our MOQ for a project depends on the component, manufacturing complexity, required secondary machining, selected alloy, delivery destination, and other project requirements. To get a quote tailored to your project, please reach out to our team.
What are the requirements for submitting an RFQ?
In your RFQ, please share your CAD drawings, total volume requirements, desired alloy, desired batch-based delivery, tolerance requirements, additional technical details, and delivery destination. We will respond within 7 business days.
What is your lead time as a defence investment casting company?
Our standard lead time for the first batch is 25–40 days, depending on design complexity, manufacturing requirements, and production volume. Subsequent batches take less time.
Ready to move your project forward?
Share your drawings, material specifications, and compliance requirements. We’ll evaluate your application and provide a detailed quotation along with manufacturing recommendations.
