--- id: "liquid-cooling-en" title: "Data Center Liquid Cooling Parts & Cold Plate Manufacturing | Zhongde" description: "Precision manufacturing of liquid cold plates, liquid cooling plates, cooling manifolds, valve blocks and structural parts for AI servers and data center liquid cooling systems." source: "/en/ai-server-liquid-cooling-parts-machining" language: "en" generated: true --- # AI Server & Data Center Liquid Cooling Parts Manufacturing Precision manufacturing support for liquid cold plates, liquid cooling plates, cooling manifolds, valve blocks, connector seats and structural components used in AI servers, GPU modules and high-density data center liquid cooling systems. - Complex flow channels and sealing grooves - Critical dimensions and flatness control - Prototype through low-to-medium volume production ## Core Machining Capabilities ### Flow Channel Machining Japanese CNC and 5-axis equipment ### Sealed Joining Laser welding and vacuum brazing ### Distortion Control Flatness and datum management ### Deburring & Cleaning Clean internal flow channels ### Leak & Pressure Testing Sealing performance verification ### In-house Finishing Blasting, mirror polishing and anodizing ## What Is an AI Server Cold Plate? An AI server cold plate is a liquid cooling component mounted directly on CPUs, GPUs or other high-power computing modules. Coolant flows through internal channels to remove heat from the chip and transfers it through manifolds, piping and the cooling loop. A typical cold plate includes a top cover, internal flow channels, sealing features, a base plate and inlet/outlet ports. Precision CNC machining remains an important manufacturing method for structures with complex channels, multiple machined faces, sealing grooves and critical datums. - Efficient Heat Transfer - Uniform Temperature - Compact Structure - High Reliability ## Parts We Can Machine From cold plate components to manifolds, interface blocks, mounting structures and dedicated fixtures, we support prototype and volume production from customer drawings. ### Cold Plate Base Complex cavities · sealing grooves · datums ### Cold Plate Cover Sealing faces · thin-wall features · pre-joining ### Flow Channel Plate Complex channels · accuracy · deburring ### Liquid Cooling Manifold Multi-channel distribution · passages · ports ### Liquid Cooling Valve Block Multi-face ports · threads · positional accuracy ### Connector Block Port positioning · sealing faces · coaxiality ### Mounting Structure Positioning · structural support · multi-datum control ### Machining Fixture Dedicated locating · clamping · repeatability ## Process Capabilities & Manufacturing Route From precision machining and joining to cleaning, finishing and inspection, the process route is selected according to material, structure and technical requirements. The actual process route is configured according to material, structure and technical requirements; not every part goes through every process. ### Precision CNC Machining Milling, drilling, tapping and datum control ### 5-Axis Machining Complex surfaces and multi-angle features ### Laser Welding Low heat input and distortion control ### Vacuum Brazing Reliable sealed joining for cold plate assemblies ### Deburring & Cleaning Internal channels, cross holes and residue control ### Surface Finishing Blasting, mirror polishing and anodizing ### Leak & Pressure Testing Leakage, pressure and sealing verification ### Dimensional Inspection Critical dimensions, datums and appearance ## Applicable Product Types Supporting a wide range of cold plates, manifolds and integrated structures for AI servers, GPU and CPU computing modules. ### CNC-Machined Channel Cold Plate ### Central-Diffusion Copper-Tube Cold Plate ### Vacuum-Brazed Multilayer Cold Plate ### Copper Skived-Fin Microchannel Cold Plate ### Radial-Flow Fin Cold Plate ### Two-Phase Evaporative Cold Plate ### GPU Liquid-Cooling Assembly ### Liquid-Cooling Manifold Block ### CNC-Machined Multiport Manifold ## Critical Quality Controls and FAQ ### Critical Quality & Engineering Points (CTQ) | Critical item | Why it matters | Control focus | | --- | --- | --- | | Flatness | Affects contact pressure and interface thermal resistance | Overall flatness, local warpage and datum consistency | | Surface roughness | Affects sealing, contact and heat-transfer interfaces | Sealing faces, contact surfaces and machining-mark consistency | | Channel dimensions | Affects flow distribution and system pressure drop | Channel width, depth, section consistency and transition radii | | Seal groove | Affects sealing performance and pressure resistance | Groove width, depth, position and surface quality | | Port position | Affects assembly accuracy and connection sealing | Position, coaxiality, perpendicularity and thread quality | | Burrs & cleanliness | Affects blockage risk and system reliability | Internal deburring, particle control, cleaning and reinspection | | Joint reliability | Affects leak tightness, pressure resistance and service life | Weld or braze quality, leak testing and pressure testing | ### Common Engineering Questions #### Which liquid-cooling structures are suitable for CNC machining? CNC machining is suitable for thick plates, cavities, primary channels, sealing faces, mounting holes and port features, as well as prototypes and low-to-medium production volumes. #### How can microchannel cold plates be manufactured? The process depends on material, channel size and aspect ratio. Options include CNC machining, skiving, chemical etching, laser processing and bonded multilayer construction. #### Why is the seal groove critical in cold-plate machining? The groove directly affects seal compression, pressure resistance and long-term reliability, so width, depth, position, roughness and burrs must be controlled together. #### What materials are commonly used for liquid cold plates, and how do aluminum and copper compare? Aluminum alloys and copper are the most common choices. Aluminum offers lower weight, good machinability and lower cost for many server cold plates, while copper provides higher thermal conductivity for high heat-flux applications. The final choice should also consider coolant compatibility, joining method, surface treatment and cost. ## RFQ Requirements and Resources ### Information Required for Quotation #### 2D. 2D Drawing PDF / DWG #### 3D. 3D Model STEP / IGES #### MAT. Material Grade / temper #### QTY. Quantity Prototype / volume #### CTQ. Critical Dimensions Tolerances / datums #### PORT. Port Requirements Threads / connectors #### SUR. Surface Treatment Anodizing / plating #### TEST. Testing Leak / pressure #### CLN. Cleanliness Particles / residues #### PKG. Packaging & Traceability Protection / lot ID ### Related Technical Resources Resources will be updated with practical guidance on materials, structures, manufacturing, quality control and validation. #### AI Server Cold Plate Manufacturing: CNC, Brazing or Microchannels? [AI Server Cold Plate Manufacturing: CNC, Brazing or Microchannels?](/en/resources/ai-server-cold-plate-manufacturing-processes) #### Aluminum vs. Copper Liquid Cold Plates: Materials and Processes [Aluminum vs. Copper Liquid Cold Plates: Materials and Processes](/en/resources/aluminum-vs-copper-liquid-cold-plates) #### How Are Microchannel Cold Plates Manufactured? [How Are Microchannel Cold Plates Manufactured?](/en/resources/microchannel-cold-plate-manufacturing) #### Cold Plate Sealing, Flatness, Leak and Pressure Testing [Cold Plate Sealing, Flatness, Leak and Pressure Testing](/en/resources/cold-plate-sealing-flatness-leak-pressure-testing)