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400T Precision Aluminium Heat Sink Press press view 1
Precision Aluminium Heat Sink · Hydraulic Press Machine

400 Ton Four Column Hydraulic Press for Cold Forged

400T Rated Capacity
100 mm/s Slider Down Speed
7–12 mm/s Slider Pressing Speed
100 mm/s Slider Return Speed
400T Precision Aluminium Heat Sink Press press view 1
400T Precision Aluminium Heat Sink Press press view 2
400T Precision Aluminium Heat Sink Press press view 3
400T Precision Aluminium Heat Sink Press press view 4

01 — Press System

400 Ton Four Column Hydraulic Press Machine

The 400-ton four-pillar hydraulic press from Sinter Hydraulics India is a high-precision, production-ready solution engineered for cold forging aluminum heat sinks, delivering dense, high-performance thermal components with tight dimensional control. Built for electronics, power electronics, and EV suppliers, it ensures long tooling life and reliable output during continuous mass production.

Use Case

Cold-forged aluminium heat sinks provide high density and maximum thermal conductivity necessary to dissipate extreme heat loads in EV powertrains and power electronics. This press platform applies uniform room-temperature compression to force metal into intricate fin channels without air gaps or structural defects.

Core Applications

  • Cold forging of high-density aluminum pin-fin and plate-fin heat sink configurations
  • High-precision backward extrusion of thin-walled, high-aspect-ratio cooling structures
  • Closed-die sizing and calibration of flat baseplates for direct thermal interface mounting

Material

  • Pure high-conductivity aluminum alloys such as 1050, 1070, and 1100 series
  • Structural aluminum forged alloys including 6061 and 6063 grades for elevated mechanical strength requirements

Typical Products Processed

  • Pin-fin and high-density plate-fin heat sinks for power electronics, inverters, and IGBT modules
  • EV battery pack cooling plates, motor drive heat sinks, and onboard charger thermal bases
  • High-power LED lighting thermal dissipation housing plates and industrial drive cooling modules
  • Renewable energy solar inverter heat sinks and switchgear thermal management bases

Key Functions

  • Proportional flow velocity control to ensure uniform metal fill into deep, narrow fin die cavities
  • Precise digital stroke measurement to maintain exact baseplate thickness tolerances across production batches
  • Integrated hydraulic bottom ejector system for clean, distortion-free part stripping of delicate finned profiles

Why 400 Ton Hydraulic Press?

  • Provides the exact tonnage needed to deform pure aluminum into deep fin channels without material tearing
  • Four-column guided design guarantees absolute platen parallelism, preventing uneven fin heights and tool misalignment

02 — Technical Specifications

SM 400 HP – HYDRAULIC PRESS MACHINE COMPLETE TECHNICAL DATA

The SM 400 HP hydraulic press delivers highly stable compression forces and micro-precise alignment tracking optimized for cold forging aluminum heat sinks. Its rigid structural frame and responsive fluid circuits ensure continuous high-volume production with strict fin height uniformity and superior baseplate flatness.

Capacity

  • Maximum continuous cold forging compression force capacity of 4000 kN
  • Dedicated high speed bottom ejector stripping force capacity of 300 kN

Structural Design

  • High fatigue resistant pre stressed four column configuration built for continuous industrial production
  • Finite element analysis structural simulation frame designed to absorb intense aluminum backward extrusion stresses

Frame Type

  • Precision aligned solid induction hardened pillar frame guide structure
  • Stress relieved heavy welded steel plate bolster and upper moving slide assembly

Hydraulic System

  • High output variable displacement axial piston pump fluid power assembly
  • Multi stage high capacity offline oil filtration loop with integrated oil coolers

Main Ram Stroke

  • Maximum vertical slide forming travel distance capability of 400 mm
  • Electronic stroke length limitation positioning resolution accurate within 0.005 mm

Working Hydraulic Pressure

  • Maximum continuous operating main hydraulic system fluid pressure of 250 bar
  • Peak shock safety valve pressure relief calibration threshold limit of 280 bar

Daylight Gap

  • Maximum open vertical daylight window working clearance of 800 mm
  • Minimum closed shut die height tool workspace space of 350 mm

Approach Speed

  • Accelerated downward advance slide rapid travel speed of 310 mm/Sec
  • Controlled raw material tool engagement deceleration velocity of 10 mm/Sec

Pressing / Drawing Speed

  • Dynamic high pressure cold forging extrusion speed of 3 to 26 mm/Sec
  • Maximum resistance continuous metal displacement squeezing velocity of 35 mm/Sec

Return Speed

  • High speed upward ram extraction retraction travel speed of 290 mm/Sec
  • Ultra fast automated hydraulic pre return system decompression cycle timing

Bed / Platen Size Platen

  • Total clear bolster bed width left to right of 950 mm
  • Total clear bolster bed depth front to back of 850 mm

Columns

  • Ultra high tensile forged alloy steel pillar diameter of 180 mm
  • Heavy duty wear resistant bronze guide bushings with automatic grease lubrication

Working Envelope

  • Total horizontal internal clear workspace area of 950 by 850 mm
  • Maximum permissible upper die tool assembly mass weight of 2500 kg

Control System

  • Industrial programmable logic controller linked with a graphical touchscreen station
  • Dual redundant non contact linear transducer position tracking systems accurate within 0.002 mm

Main Motor Power

  • High efficiency primary hydraulic pump electric drive motor power of 55 kW
  • Dedicated auxiliary cooling and continuous oil filtration motor power of 5 kW

Valves & Hydraulics

  • High dynamic response proportional servo flow control cartridge manifold block
  • Integrated fast acting overhead gravity pre fill oil valve unit assembly

Automation

  • Digital interface connection ports for synchronized industrial automatic feeder loops
  • High temperature hydraulic quick action die clamping system connecting lines

Safety Features

  • Dual channel infrared light curtain barriers guarding operator workspace zones
  • Automated heavy duty dual fail safe mechanical anti drop ram safety locking blocks

SM 400 HP — Model Specifications

  • Nominal Force: 4000 KN
  • Maximum Hydraulic Pressure: 25 MPa
  • Max Opening Height of the Slider: 1250 mm
  • Max Stroke of the Slider: 800 mm
  • Effective Bed Size: 1260 × 1160 mm
  • Slider Down Speed: 100 mm/s
  • Slider Pressing Speed: 7–12 mm/s
  • Slider Return Speed: 100 mm/s
  • Ejector Cylinder Nominal Force: 400 KN
  • Stroke of the Ejection Cylinder: 300 mm
Production Case Study

Cold Forged Precision Aluminium Heat Sink Production Line

10-45 mmMaterial Thickness
250 mmSurfacee Area
5-10 SecCycle time
450-900 PartsOutput/Hour
Thermal conductivity maximized exceptionally
Intricate fin geometries formed
Baseplate flatness held consistently
Internal void formation eliminated
Post forge machining minimized
Surface quality enhanced greatly
Production line efficiency boosted

03 — Die / Mold System

Cold Forged Precision Aluminium Heat Sink Die Mold Engineering

This precision cold forging die system incorporates ultra-hard carbide punch pins and segmented steel inserts engineered to handle continuous high-aspect-ratio aluminum extrusion. Its rigid construction resists extreme cavity expansion forces, ensuring straight pin fins and uniform baseplate thickness.

Technical Specifications (Tooling)

Die Type

  • High precision progressive closed die multi cavity backward extrusion and sizing tool set assembly
  • Heavy duty cold forging mold configuration engineered for high aspect ratio pin fin and plate fin aluminum heat sinks

Die Materials

  • Submicron grain tungsten carbide cobalt inserts for maximum compressive yield strength and wear resistance
  • High tensile chromium molybdenum vanadium hot work tool steel utilized for outer pre stressed compression containment rings

Tool Configuration & Construction

  • Multi layer interference fit shrink fitted container ring design engineered to counteract severe internal cavity pressures
  • Modular cassette insert assembly optimized to minimize production line changeover times and maximize bolster bed area

Key Tooling Features

  • Synchronized multi pin hydraulic bottom ejection mechanism for uniform distortion free extraction of thin fin profiles
  • Micro machined internal vacuum relief air venting channels engineered to eliminate air traps and prevent pressure locks

Alignment Accuracy

  • Upper punch and lower die axis concentricity deviation kept strictly under a limit of 0.012 mm
  • Moving slide guiding parallelism variance across the active workspace restricted within a tolerance of 0.008 mm

Process Materials

  • Pure high conductivity aluminum alloys 1050 1070 and 1100 series billets
  • High strength forged aluminum structural alloys including 6061 and 6063 series pre cut billets

Surface Finish

  • Active mirror polished tungsten carbide fin channels diamond lapped down to an roughness of Ra 0.02 microns
  • Advanced physical vapor deposition titanium aluminum nitride wear protective surface coating applied to a thickness of 0.003 mm

Tool Life

  • Expected production span of 40000 cycles before requiring mandatory cavity inspection and micro polishing procedures
  • Total structural tooling lifespan capacity reaching 400000 production cycles before complete carbide insert replacement
Case Study (Die Performance)

Cold Forged Precision Aluminium Heat Sink Die Mold

ISI H13 Cr-Mo-V AlloyDie Material
56–60 HRCHardness
Vacuum HardeningSurface Treatment
Fin galling eliminated completely
Cavity wear resisted fully
Pin breakage avoided entirely
Dimensional stability held consistently
Fin height uniformity maintained
Tooling life extended significantly
Component scrap rate minimized

04 — Product Application

Where Cold Forged Precision Aluminium Heat Sink Are Used

Cold-forged precision aluminum heat sinks provide high-density thermal management required to cool high-power semiconductor devices and electronic modules. By packing pure aluminum into high-aspect-ratio pin and plate fins, these components maximize surface area to prevent thermal throttling in high-load applications.

Industry Applications

Cold-forged aluminum heat sinks are critical components across electric vehicle manufacturing, solar inverter production, industrial automation, and telecommunications infrastructure. Their dense grain structure, high fin-aspect ratios, and low thermal resistance enable electronics OEMs to shrink device footprints, extend component operating lifespans, and ensure maximum energy conversion efficiency.

Electric Vehicle Powertrains and Onboard Battery Chargers

Mounted directly beneath high-voltage IGBT modules, inverter drives, and battery management systems to dissipate rapid heat surges. The void-free cold-forged structure guarantees fast, uninterrupted heat transfer across the interface, protecting sensitive EV electronics from thermal shutdown.

High-Power Industrial Inverters and Variable Frequency Drives

Integrated into heavy industrial control panels, automation drives, and robotic power supplies operating under continuous duty cycles. Dense aluminum fins maintain superior structural rigidity, preventing thermal deformation and ensuring long-term cooling efficiency in harsh factory settings.

Renewable Energy Generation and Solar String Inverters

Deployed in utility-scale solar grid tie-in systems, wind turbine converters, and high-capacity battery energy storage arrays. High thermal conductivity allows compact heat sink footprints that dissipate extreme thermal energy without relying on failure-prone active cooling fans.

Telecommunications Towers and High-Output LED Infrastructure

Engineered into outdoor 5G transceiver stations, data center power modules, and high-bay industrial outdoor lighting housings. Superior surface finish and seamless material density provide corrosion resistance and efficient natural convection cooling in outdoor enclosures.

Finished Product Gallery

400T Precision Aluminium Heat Sink Press finished product 1
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400T Precision Aluminium Heat Sink Press finished product 3
400T Precision Aluminium Heat Sink Press finished product 4
400T Precision Aluminium Heat Sink Press finished product 5
400T Precision Aluminium Heat Sink Press finished product 6

05 — Key Advantages

Why Choose the 400-Ton Sinter Hydraulic Press

The 400-Ton Sinter Hydraulic Press provides the high force precision and rigid frame stability required to cold-forge complex aluminum heat sinks. Its proportional velocity controls ensure complete metal displacement into high-aspect-ratio fin channels while maintaining low thermal resistance across high-volume production runs.

Technical & Commercial Benefits

01

Precision Velocity Profiling for High-Aspect-Ratio Fin Extrusion

Proportional hydraulic flow control smoothly decelerates forming speeds down to precise single millimeters per second during displacement. Regulating aluminum deformation prevents surface tearing and ensures complete filling of deep, narrow pin-fin cavities.

02

Ultra-Rigid Four-Column Frame Ensuring Absolute Platen Parallelism

The heavy-duty pillar construction absorbs off-center forming loads and minimizes bed flex under maximum forging pressures. Maintaining total parallelism prevents uneven fin height distribution and protects delicate carbide punch pins from bending or snapping.

03

Sub-Micron Electronic Stroke Limit Control for Flat Baseplate Thickness

Dual non-contact linear position transducers track ram movement to control final down-stroke depth within single-digit microns. Holding strict baseplate thickness tolerances eliminates expensive secondary face-milling operations before thermal module mounting.

04

Integrated Multi-Pin Hydraulic Knockout for Distortion-Free Part Stripping

A synchronized hydraulic bottom ejector exerts uniform stripping force across the entire heat sink footprint upon ram reversal. Balanced mechanical extraction prevents bending or warping of thin, fragile fin structures during automated removal.

05

Void-Free Material Consolidation Enhancing Thermal Conductivity

High-pressure cold forging packs the pure aluminum alloy stock densely, completely eliminating internal porosity and air pockets. Achieving maximum material density significantly improves heat dissipation efficiency compared to traditional die-cast or machined heat sinks.

06

Near-Net-Shape Forming Yielding Exceptional Material Savings

Forming complex cooling geometries directly from pre-cut aluminum billets eliminates massive scrap waste typical of CNC milling from solid block. Maximizing raw stock utilization significantly lowers unit production costs on high-purity aluminum alloys.

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