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Thirumudivakkam Foundry ComplexChennai Hub

Advanced High-Pressure Die Casting Infrastructure

Our Thirumudivakkam plant runs cold-chamber high-pressure die casting machines of 250 and 350 tonnes, Silcarb melting and holding furnaces, and in-house finishing, machining and inspection equipment for automotive, electrical and industrial components.

STATUS:100% ONLINE

FACILITY:
5,000 SQ. FT.
ALLOY:
ADC12 / AL
Asset Registry

High-Pressure Die Casting Units

Automated Cold-Chamber Cells with Integrated Ladlers & Sprayers

FLAGSHIP HPDC CELL

350T Die Casting Machine

TOSHIBA (JAPAN) • COLD CHAMBER HPDC

350TLOCKING FORCE

Cold chamber die casting cell at the Sunmax plant in Chennai
THIN-WALLED POWERTRAIN ENCLOSURES
Platen Size
935 × 935 mm
Tie Bar Distance
650 × 650 mm
Run Cycle
28 sec
Japanese dual-toggle high-precision clamping for thin-walled powertrain enclosures and complex heatsink profiles.

ZITAI PRECISION (TAIWAN)

250T Die Casting Machine

HIGH SPEED INJECTION

High repetition rate cold chamber configuration optimized for lighting housings, switchgear components, and pump covers.

Die Height Range
250 - 650 mm
Tie Bar Distance
580 × 580 mm
CONTINUOUS SHIFT OPERATIONLOCKING: 2500 kN

Thermal Metallurgy685°C ± 5°C TOLERANCE

Silcarb Recrystallized Melting & Holding Furnaces

Centrally integrated thermodynamic crucible stations designed for non-ferrous aluminium degassing, dross reduction, and stable eutectic silicon chemistry.

Holding Units
300T & 350T
Molten Purity
Degassed N₂
Thermal Spec 01

Recrystallized Silicon Carbide

Provides extreme thermal conductivity and resistance to thermal shock, preventing metallic iron contamination inside virgin aluminium melts.

CRUCIBLE LIFE: > 1,200 HEATS

Thermal Spec 02

PID Microprocessor Control

Dual immersion thermocouples continuously balance bath equilibrium at exactly 685°C to avoid cold-shut defects and shrinkage porosity in die chambers.

ACCURACY: ± 3°C DRIFT CEILING

Thermal Spec 03

Fluxing & Impeller Degassing

Rotary graphite rotor introduces pure argon/nitrogen purging gas to scavenge hydrogen gas micro-bubbles before transfer to die-holding ladles.

SPECIFIC GRAVITY DENSITY: > 2.68

Post-Casting Matrix

Secondary Operations & Plant Equipment

COMPLETE IN-HOUSE FINISHING & METROLOGICAL VALIDATION

PNEUMATICS

Industrial Compressor Unit

High-output rotary screw compressor configuration with refrigerated air drying arrays, sustaining continuous pneumatic pressure for robotic sprayers and die unclamping.

RATING10 BAR CONSTANT

QA VALIDATION

Granite Surface Table

High-grade metrology inspection datum surface paired with digital height gauges and coordinate dial indicators for precision dimension & flatness verification.

GRADEGRADE 0 ACCURACY

HEAVY HANDLING

Overhead EOT Crane System

Full-span overhead electric traveling crane commanding both foundry bays for rapid mold changes, raw ingot ladle transport, and die platen installation.

CAPACITY5.0 TON SAFE LOAD

MACHINING

Multi-Spindle Drilling Machine

Geared precision drilling and tapping setups with custom pneumatic index tables for high-cadence casting hole preparation and tapping threads.

DIAMETERØ1.5 mm - Ø32 mm

FETTLING

Heavy Runner Cutting Machine

Heavy-duty bandsaw and circular abrasive saw systems engineered to cleanly excise gating channels, biscuit remnants, and overflows without structural shock.

CYCLE SPEED< 12 SEC / SPRUE

SURFACE DEBURR

Linishing & Deburring Units

High-velocity abrasive belt linishers and vibratory finishing bowls removing parting line flashes and delivering uniform aesthetic micro-surfaces.

FINISH QUALITYRA 1.6 - 3.2 µM

Machine Register

Die casting machine specifications

CLAMPING FORCE · SHOT CAPACITY · PLATEN SIZE

Aluminium high pressure die casting machines at Sunmax Casting, Chennai
MachineTypeClamping forceShot capacityPlaten / tie-barMax component sizeAutomationQty
Toshiba DC-350Cold-chamber HPDC350 T[INSERT]935 × 935 mm platen · 650 × 650 mm tie-bar[INSERT][INSERT][INSERT]
ZitaiCold-chamber HPDC250 T (2500 kN)[INSERT]580 × 580 mm tie-bar · die height 250–650 mm[INSERT][INSERT][INSERT]
Metrology

Quality inspection equipment

SEE OUR QUALITY PROCESS FOR HOW EACH IS USED

Quality inspection equipment
EquipmentPurposeDetails
Coordinate measuring machine (CMM)First-article and periodic dimensional inspection[INSERT MAKE / MODEL / RANGE]
Optical emission spectrometerMelt and ingot chemistry verification[INSERT MAKE / MODEL]
X-ray / radiographyInternal porosity inspection of critical sections[INSERT — confirm in-house or outsourced]
Granite surface tableDatum surface for height gauges and dial indicatorsGrade 0
Leak testingPressure-tightness of housings and manifolds[INSERT METHOD / RANGE]
Hardness testerBrinell hardness of cast parts[INSERT MAKE / MODEL]

Foundry Lifecycle Maintenance

Tooling Longevity & Preventative Die Protocol

At Sunmax Casting, mold assets are subjected to stringent preventative maintenance after every production batch. We maintain complete traceability from core pin hardening to ultrasonic mold cavity washdown.

  1. Thermal Crack DetectionHigh-sensitivity dye-penetrant inspection across high-stress gate sections.
  2. Automated Hydraulic Clamping ChecksTonnage calibration on ZITAI & TOSHIBA tie bars via digital strain sensors.
  3. Core-Pin Micro-AlignmentDedicated toolroom refurbishing station to sustain tolerances inside ±0.03 mm.

Foundry Metrics Matrix

CHENNAI HUB
HPDC MACHINES
250T & 350T
Zitai · Toshiba cold chamber
CLAMPING CAPACITY
350 TON
Maximum platen lock
FURNACE HEATING
685°C
Silcarb Silicon Carbide
CERTIFICATION
IATF
16949:2016 Compliant
Plant Audit Dossier & Machine LogRequest calibration sheets and die load charts
VIEW SPECS

OEM & Tier-1 Manufacturing

Ready to Deploy Your Castings on Our 250T & 350T Lines?

Submit technical 2D/3D component drawings (STEP, IGES, DXF) for mold flow simulations, tonnage planning, and preliminary tooling quotations.