This service integrates near-net-shape die casting and CNC precision machining into a one-stop manufacturing solution, with a particular focus on producing precision aluminum alloy parts requiring extremely high strength, accuracy, and heat dissipation performance. Taking the aluminum die-cast heatsink housing for electronic products as an example, we employ state-of-the-art ADC12 or A383 aluminum alloy die casting technology and five-axis CNC machining services to ensure precise heat dissipation tooth shape, mounting surface flatness of no less than 0.05mm/m, and screw hole positioning accuracy of ±0.05mm, meeting the stringent assembly and heat dissipation performance requirements of electronic products.
Our core competitiveness lies in the production of heat-dissipating aluminum die castings. Using vacuum die casting technology, the internal porosity of the die castings is reduced to below 3%, fully utilizing the material's thermal conductivity and laying a solid foundation for efficient heat dissipation. Subsequent CNC machining processes allow for precision forming, reducing the surface roughness of the heat-dissipating aluminum die castings to below Ra 3.2 μm.
Aluminum heatsink die castings are produced using 280-800 ton cold chamber die casting machines. Flow analysis software is used to optimize flow paths for smooth aluminum flow, remove air bubbles, and optimize thin-walled areas in custom heatsink frames. Aluminum ingots conform to ASTM B85 standards, and aluminum testing reports have been submitted.
We use vertical or horizontal machining centers and specialized cutting tools to precisely mill reference surfaces, mounting holes, and related surfaces required for machining during the production of aluminum alloy heatsink components. Machining accuracy is between ±0.05mm and ±0.1mm. For custom LED lighting heatsink housings, mounting slots and water seals can also be machined in a single operation.
Depending on the specific application, different surface treatments are applied after CNC machining. For die-cast aluminum insulating corrosion-resistant heatsink housings used in electronic applications, we prioritize conductive chemical anodizing or hard anodizing processes. For LED heatsink housings with high aesthetic requirements, we use sandblasting, colored anodizing, or powder coating. Anodizing typically increases the overall thermal resistance of the heatsink by less than 10%.
We also conduct specialized inspection procedures on cooling components to ensure their mechanical and thermal properties meet requirements.
We use coordinate measuring machines to perform precise dimensional inspections of parts, with an accuracy of ±0.002 mm. We use thread gauges to check the fit of parts. For die-cast blanks, we use X-ray inspection.We provide steady-state thermal resistance testing according to ASTM D5470 standards. We provide customers with thermal resistance values (Rth), which reflect the heat dissipation performance of our manufactured aluminum alloy heat sink assemblies.
Our quality management system is ISO 9001 certified. Detailed documentation is provided for each production batch. We provide various material performance data, including composition, performance characteristics, and physical properties.
Whether you need to design a completely new heat sink housing or are looking for a supplier that can provide secondary processing services to use existing die-cast aluminum heat sink housings in your electronic designs, we can provide you with a full range of services, from mold design to CNC machining. If you encounter challenges in your thermal component project, such as structural complexity, stringent tolerance requirements, or reliance on the supply chain, please feel free to contact us via email. Please attach your 3D drawings, material specifications, and performance parameters. Our engineering team will conduct a feasibility analysis and a detailed analysis of the final process flow.
Jinyi Mold was established in 1998 and is headquartered in Dongguan, Guangdong. Our professional team provides injection mold and die-casting mold services, providing you support in every aspect from design, manufacturing to final assembly.
dozens of CNC machining centers (gantry & 5-axis), injection molding machines (80-1600 tons), EDM machines, automation equipment, etc.
Establish solid partnerships with Europe, Australia and Asia to carry out international export business.
Company production capacity: A 13,000㎡ production base in Maoming (built in 2022), backing an annual turnover surpassing 150 million RMB.
Possess High-Tech Enterprise Certification, ISO9001:2015 Quality management system certification.
Logistics follows international transportation standards, and packaging is packed in reinforced wooden boxes, filled with PE foam and wrapped in moisture-proof bags.
Marketing: Selina Chan
WhatsApp:+8618969686504
Email:selina@jy-mould.com
Contact us to discuss how we can support your project needs
Please know that when you choose Jinyi Mold, we are not only a supplier, but also a Chinese manufacturing partner with 25 years of experience in mold design, manufacturing, and assembly.
We specialize in providing high-precision mold manufacturing and injection molding solutions for industries including automotive, home appliances, consumer electronics, medical devices, and industrial equipment.
Quality is controlled through a comprehensive system, including mold flow analysis, strict material certification, in-process inspections, and final product testing. We also provide complete documentation such as steel certificates, hardness reports, and dimensional inspection reports.
For mold making, the lead time is typically 4–6 weeks after design approval. For mass production of plastic parts, it usually takes 2–3 weeks depending on part complexity and order quantity.
Yes, our engineering team provides full support from DFM (Design for Manufacturability) analysis to mold design optimization, helping customers accelerate product development and reduce production risks.
Our standard terms are 50% deposit upon order confirmation and 50% balance payment before shipment. Flexible payment arrangements can be discussed based on project scope and cooperation level.
Absolutely. In addition to mass production, we offer low-volume manufacturing, rapid prototyping via 3D printing and silicone molding, ensuring customers can quickly validate designs before full-scale production.
We accept a wide range of file formats including STEP, IGES, DWG, and PDF for mold design, DFM analysis, and quotation preparation.
Yes, we provide mold maintenance instructions with each shipment. If any issues occur, our technical team offers remote support or on-site service depending on the situation.
Yes, we have extensive experience in multi-cavity, family molds, and complex molds that require interchangeable inserts, ensuring cost-effective and efficient production for customers.
We are familiar with a wide range of thermoplastics including ABS, PC, PA, POM, PP, TPE, TPU, and high-performance engineering plastics based on customer requirements.
Yes. We are experienced in manufacturing molds compliant with international standards such as HASCO, DME, and MISUMI, ensuring smooth integration with overseas production lines.
We take IP protection seriously. We are willing to sign NDAs (Non-Disclosure Agreements) and have strict internal controls to ensure all customer designs and projects remain confidential.
