Custom 6061 Aluminum Alloy Liquid Cooling Cavity with Turn-Mill Composite CNC Machining and ±0.01mm Tolerance

Our custom CNC aluminum liquid cooling cavity, also known as a water-cooling heat sink base, is one of our premium custom CNC machined metal parts. Manufactured in our professional CNC machining factory for high-power thermal management applications, this component is machined from premium 6061 aluminum alloy (bare machined aluminum, ready for anodizing). The heat sink cavity features dense concentric circular cooling flow-channel grooves on the back face, forming a liquid cooling circulation structure that efficiently removes heat generated by high-power components.

We adopt turn-mill composite CNC machining for full production. The process starts from aluminum bar stock. A CNC lathe machines the outer circle and center stepped bore; then a CNC machining center mills the back-face annular flow channels, mounting threaded holes, and locating slots. Because front and back structures differ significantly, the workpiece requires two clamping and turning-over operations. We perform precision milling on the back-face spiral/annular coolant flow channels, strictly controlling channel depth, width, and surface roughness to ensure high fluid circulation efficiency. After machining, we carry out precision deburring and ultrasonic cleaning to remove aluminum chips inside flow channels, preventing channel blockage. Natural or hard anodizing is available to enhance corrosion resistance.

This liquid cooling cavity has strict manufacturing challenges. Uniform depth and flatness of the annular flow channels, plus sealing-face flatness, must be tightly controlled to prevent water leakage after assembly. Position tolerance of mounting holes ensures reliable sealed assembly. Our experienced team optimizes tooling and cutting parameters to stably achieve tolerance up to ±0.01mm.

As a reliable manufacturer, we provide full services including 3D drawing review, DFM process planning, prototyping, small-batch trial runs, and mass volume delivery. Our factory produces custom CNC metal components across a wide range of industries: consumer electronics, automation & industrial equipment, semiconductor & vacuum equipment, medical devices, new energy automotive, aerospace & drones, optics & optoelectronics, 5G communication, robotics, and instruments & meters. Whether you need one-off prototype validation or large volume manufacturing, our team can support your project and deliver a competitive quote.

1. Material: 6061 aluminum alloy, excellent thermal conductivity, ready for anodizing
2. Machining: Turn-mill composite CNC machining, two-side flip for complex front/back structures
3. Precision: Tight control of flow channel depth, flatness, and sealing face, tolerance up to ±0.01mm
4. Structure: Concentric cooling flow channels, center stepped bore, threaded holes, and locating slots
5. Surface treatment: Precision deburring, ultrasonic cleaning, natural/hard anodizing optional
6. Flexible production: Support prototype, small batch, and mass manufacturing

• Efficient liquid cooling: Precision flow channels rapidly remove heat from high-power components, keeping stable operating temperature
• Leak-free sealing: Tight sealing-face flatness control prevents water leakage after assembly
• Clean flow path: Ultrasonic cleaning removes internal chips, preventing channel blockage and flow reduction
• Lightweight & high conductivity: 6061 aluminum delivers excellent heat transfer while keeping weight low
• One-stop manufacturing service from drawing analysis to finished goods, simplifying your supply chain
• Scalable production capacity for prototype testing and high-volume commercial orders

• High-Power Lasers: Liquid cooling heat sink assemblies for high-power laser devices
• Servo Motors & Spindles: Liquid cooling bases for servo motors and high-speed spindles
• Industrial Power: Liquid cooling heat sinks for industrial power supplies and high-power modules
• Medical & New Energy: Heat dissipation for high-power medical light sources and new energy electric controls

• Professional CNC machining factory specialized in custom CNC machined metal parts with ±0.01mm high precision
• Full services: drawing evaluation, process design, fixture development, prototyping & mass production
• Rich experience in turn-mill composite complex flow-channel heat sink parts for power & laser sectors
• Full dimensional inspection before shipment, stable quality control for every batch
• Flexible order volume: single prototype, small batch trial, and large mass production available
• Custom anodizing options to meet anti-corrosion, wear resistance, and appearance requirements
• Fast technical response and competitive quote for your custom CNC precision machining parts

As a professional CNC machining parts factory and reliable manufacturer, we deliver full one-stop custom CNC machined parts services for global B2B clients. Our services cover 3-axis & 5-axis CNC milling, CNC turning, and turn-mill composite machining for custom machined metal parts in aluminum, stainless steel, and other metals.

Our full workflow includes drawing review, DFM analysis, process planning, fixture design, prototype machining, small-batch trial production, and mass manufacturing. We provide post-processing services: precision deburring, polishing, anodizing, passivation, and full dimensional inspection. Our machining accuracy reaches ±0.01mm.

We serve multiple industries: consumer electronics, automation & industrial equipment, semiconductor & vacuum equipment, medical devices, new energy automotive, aerospace & drone, optical & photoelectric, 5G communication, robotics, and instrument & meter industries.