Custom Brazing Welding Liquid Cold Plates are high-performance thermal management components designed for electronic and industrial systems that require efficient and reliable liquid cooling. This solution combines an AL6063 aluminum cold plate with embedded copper tubes, using vacuum brazing to create a strong and sealed thermal structure.
The aluminum plate provides a lightweight and thermally conductive base, while the copper tube cooling circuit offers an efficient path for coolant circulation and heat removal. With CNC machining, custom flow-path design, hard anodizing, and 100% pre-shipment testing, these Custom Liquid Cold Plates can be engineered for demanding applications including IGBT modules, laser equipment, power electronics, EV systems, and other high-power electronic devices.
The cold plate uses AL6063 aluminum alloy as the main plate material and copper tubing as the internal cooling path. This aluminum-copper construction combines the low density and good thermal conductivity of aluminum with the excellent thermal conductivity of copper.
The copper tubes can be arranged according to the component heat-source distribution to improve heat spreading, coolant coverage, and temperature uniformity.
Vacuum brazing is used to join the copper tubes and aluminum structure under a controlled vacuum atmosphere. Compared with conventional mechanical fastening, vacuum brazing can provide a more integrated structure with reliable joints and reduced contamination.
The brazed structure is designed to support:
Reliable tube-to-plate bonding
Low thermal contact resistance
Good structural integrity
Consistent production quality
Sealed coolant passages
Reduced risk of leakage
The internal cooling tube layout is one of the most important factors affecting cold plate performance. Tube diameter, tube spacing, flow path, inlet/outlet position, and heat-source location can be customized according to the application.
Engineering parameters can be optimized for:
Heat load
Coolant flow rate
Pressure drop
Thermal resistance
Heat flux distribution
Component mounting position
Available installation space
This makes the product suitable for custom liquid cold plate projects where standard cooling plates cannot meet the required thermal or mechanical specifications.
The cooling process starts when heat generated by an electronic component is transferred to the aluminum cold plate through a thermal interface material (TIM). The heat then spreads through the aluminum base toward the embedded copper tubes.
Coolant flowing through the copper tubes absorbs the transferred heat and carries it away from the heat source.
The basic thermal path is:
Electronic Component → TIM → Aluminum Cold Plate → Copper Tube → Coolant → Radiator / Heat Exchanger
The actual cooling capacity depends on the cold plate dimensions, coolant properties, tube geometry, flow rate, inlet temperature, thermal interface resistance, and allowable component temperature.
For this reason, thermal resistance (K/W), heat load (W), flow rate (L/min), and pressure drop (kPa or bar) should be evaluated during custom cold plate design.
Every custom brazing welding liquid cold plate can be developed according to the customer's thermal and mechanical requirements.
For demanding applications, the cooling channel configuration can be evaluated through CFD (Computational Fluid Dynamics) to analyze coolant velocity, flow distribution, pressure drop, and temperature distribution.
The design can be optimized to reduce flow imbalance and improve heat removal from high-heat-flux areas.
Additional CNC machining is available for mounting holes, threaded holes, sealing surfaces, component interfaces, and other critical dimensions.
The specified machining tolerance can reach 0.01 mm for selected critical features, depending on the design and machining requirements.
The aluminum cold plate can receive hard anodizing to improve surface hardness and corrosion resistance. Surface treatment can be selected according to the operating environment and coolant compatibility.
| Parameter | Specification |
|---|---|
| Product Type | Custom Brazing Welding Liquid Cold Plate |
| Base Material | AL6063 Aluminum Alloy |
| Tube Material | Copper |
| Manufacturing Process | Vacuum Brazing |
| Cooling Method | Liquid Cooling |
| Tube Structure | Embedded Copper Tube |
| Shape | Square / Custom |
| Size | Custom |
| Tolerance | Up to 0.01 mm for selected features |
| Surface Treatment | Hard Anodizing |
| Additional Process | CNC Machining |
| Coolant | Water / Water-Glycol or Application-Specific Coolant |
| Flow Channel | Custom Copper Tube Layout |
| Quality Control | 100% Testing Before Shipment |
| OEM / ODM | Available |
| Certifications | ISO 9001:2015, ISO 14001:2015 |
| Origin | Shenzhen, China |
Custom liquid cold plates are suitable for IGBT modules, power converters, inverters, rectifiers, and other power semiconductor devices that generate significant heat during operation.
Laser equipment requires stable temperature control to maintain optical performance. The copper tube liquid cooling structure can provide controlled heat removal for high-power laser systems.
These liquid cooling plates can be customized for thermal management applications in electric vehicles, battery systems, power electronics, and energy conversion equipment.
The cold plates can also be used for industrial controllers, high-power power supplies, semiconductor equipment, telecommunications equipment, and other electronic systems requiring compact thermal management.
Aluminum-copper hybrid structure for an effective balance of weight and thermal performance
Vacuum brazing for reliable tube-to-plate bonding
Embedded copper tubes for customized coolant flow paths
Custom dimensions and tube layouts
CNC machining for precision mounting and interface features
Hard anodizing for improved surface durability
CFD-based flow optimization available for demanding applications
Suitable for high-power electronic cooling
OEM/ODM customization supported
100% testing before shipment
As a professional liquid cold plate manufacturer, Kingka provides custom thermal management solutions from engineering design and prototype development to CNC machining, vacuum brazing, surface treatment, testing, and mass production.
Our engineering team can work from 2D drawings, 3D CAD files, samples, or application requirements to develop a suitable cooling structure. For projects involving high heat loads, the design can be evaluated according to thermal resistance, coolant flow rate, pressure drop, heat flux, and temperature distribution.
The result is a customized brazed liquid cold plate designed around the actual thermal requirements of your equipment rather than a standard off-the-shelf cooling solution.
The main cold plate is made from AL6063 aluminum alloy, while the internal cooling tubes are made from copper.
The structure uses vacuum brazing technology to create reliable joints between the cooling components.
Yes. Tube diameter, routing, spacing, inlet/outlet positions, and cooling coverage can be customized according to the heat source and available installation space.
Yes. CNC machining can be used for mounting holes, threaded holes, component interfaces, sealing surfaces, and other precision features.
Yes. Hard anodizing is available for the aluminum surface to improve hardness, durability, and corrosion resistance.
Yes. OEM and ODM custom liquid cold plates are supported based on customer drawings, 3D models, samples, or technical requirements.
Kingka Tech Industrial Limited
We specialize in Heat Sink、Liquid Cold Plate、precision CNC machining and our products are widely used in telecommunication industry, aerospace, automotive, industrial control, power electronics, medical instruments, security electronics, LED lighting and multimedia consumption.
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Da Long New Village, Xie Gang Town, Dongguan City, Guangdong Province, China 523598
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