Product Description

The Precision CNC Machined Liquid Cooling Block with Micro Channels is engineered for extreme heat-flux dissipation (>100 W/cm2), using sub-millimeter fluid fin channels to dramatically maximize surface area and convective heat transfer.

Manufactured using ultra-fine micro-milling or micro-skiving, the internal core features tightly pitched fins and micro-slots that disrupt boundary layer growth and induce beneficial micro-turbulence. This creates superior thermal conductance while keeping the overall fluid block profile lightweight and compact.

The structural housing and manifold chambers are CNC-machined from single-billet metal to ensure dimensional accuracy, structural rigidity, and fluid flow balance across every individual micro passage. By controlling fin height, fin spacing, and flow path width, the block achieves an optimized balance between thermal resistance and system pressure drop.

TCH Thermal provides precision contract manufacturing based on customer design files, providing custom manifold headers, O-ring seal glands, and laser-welded or vacuum-brazed covers to deliver complete, ready-to-integrate micro-channel assemblies.

Product Features

• Sub-Millimeter Micro-Fin Architecture: Fin widths and channel gaps down to 0.15 - 0.30 mm multiply the internal wetted area by hundreds of percent compared to conventional drilled channels.

• Controlled Pressure-Drop Manifolding: Balanced distribution plenums feed coolant evenly across the micro-fin array, preventing flow stagnation and localized overheating.

• High-Speed CNC Micro-Milling: Machined on ultra-high-RPM CNC machining centers to ensure uniform channel depth, smooth side walls, and high aspect ratios without fin deformation.

• Precision Gasket & O-Ring Grooves: CNC-machined sealing grooves guarantee exact compression ratios, ensuring leak-free performance under pressurized pumping loops.

• Monolithic or Brazed Lid Assemblies: Available as an open-cavity block with gasketed covers or as a hermetically vacuum-brazed/friction-stir-welded single unit.

• Engineered to Customer Drawings: Channel pattern, manifold layout, and exterior dimensions are custom-manufactured to match customer thermal simulations and fluid dynamics models.

Application of Precision CNC Machined Liquid Cooling Block with Micro Channels

Built for applications where standard cooling designs fail to manage extreme localized thermal densities.

• Optoelectronics & Photonics

  • High-power diode laser arrays

  • Industrial cutting laser heads

  • Extreme UV/infrared projection engines

  • Fiber laser pump modules

• Power & Defense Electronics

  • GaN and SiC radar power amplifiers (RF AESA systems)

  • Directed-energy system electronic controllers

  • High-density pulsed power converters

• Medical Equipment

  • CT scanner X-ray tube heat exchangers

  • Medical laser surgical units

  • MRI RF amplifier chillers

• Laboratory & Analytical Devices

  • Mass spectrometry detector coolers

  • High-flux synchrotron beamline optics

  • Concentrated photovoltaic (CPV) test cells

Advantages

• Highest Convective Heat Transfer Coefficient: The ultra-thin hydraulic diameter of micro-channels significantly boosts the heat transfer coefficient, yielding minimal thermal resistance.

• Compact, Space-Saving Footprint: Delivers high-capacity cooling within a fraction of the height and volume required by conventional liquid cold plates.

• Simulation-Accurate Manufacturing: Faithfully reproduces micro-geometry down to strict tolerances, ensuring experimental bench tests match CFD and thermal models.

• Flexible Material Selection: Machinable in oxygen-free high-conductivity copper for maximum conduction or aircraft-grade aluminum for weight-critical systems.

• Leak-Tight Integrity: Engineered with high-tolerance joining and sealing surfaces to safeguard surrounding high-value optical or electrical systems.

Product Parameters

• Product Type: Micro-Channel Liquid Water Block

• Dissipation Capability: High Heat Flux (> 100 W/cm2)

• Core Material: C11000 / C10200 Oxygen-Free Copper, Al 6061-T6

• Micro-Channel Width: 0.15 mm - 0.50 mm (customizable)

• Fin Height / Aspect Ratio: Up to 10:1 aspect ratio (application specific)

• Channel Manufacturing: Precision Micro CNC Milling / Multi-Axis Slotting / Skiving

• Sealing / Cover Option: EPDM/Fluoropolymer O-Ring, Vacuum Brazing, or Laser Welding

• Inlet / Outlet Orientation: Top-feed jet impingement, side-flow, or bottom-port manifold

• Operating Pressure: Rated up to 6 bar standard (higher available on request)

• Dimensional Tolerance: Critical fin dimensions up to +/- 0.015 mm

• Coolant Medium: Low-viscosity fluids: Water, Glycol mix, Dielectric Coolant

• Documentation & Quality: CMM Dimensional Report, Pressure Decay Test, Flow-vs-Pressure Curve

• Manufacturing Model: Custom OEM Contract Machining