OEM Die-cast Aluminum Housing for Surveillance Camera

Analysis of the Advantages, Features, and Technical Characteristics of Die-Cast Camera Aluminum Housing

In the high-temperature engine compartments of autonomous vehicles, the dusty environments of industrial quality inspection, and the open-air environments of security surveillance, cameras manufactured using die-casting are becoming the benchmark for reliability due to their unique performance. This camera manufacturing solution, centered around metal die-casting technology, is rapidly gaining popularity in consumer electronics, automotive vision systems, and industrial inspection, thanks to its combination of material innovation and precision molding processes.

Ⅰ. Core Advantage: The Dual Empowerment of Materials and Processes

The most significant advantage of die-cast cameras stems from the synergistic effect of metal materials and high-pressure forming processes. Die-cast parts made of a highly thermally conductive Al-Si-Zn-Mg aluminum alloy boast a thermal conductivity of 180-190 W/(m·K) and a yield strength of 150-170 MPa. This improves heat dissipation by over 40% compared to traditional AlSi12 alloys while maintaining superior structural strength. This material property is crucial for high-resolution cameras—heat generated by 4K/8K modules during operation can be quickly transferred through the die-cast housing, preventing increased sensor noise or performance degradation due to high temperatures. 

The high-pressure die-casting process (typically 30-150 MPa) achieves dimensional accuracy of 0.05mm, ensuring micron-level coaxiality between the lens optical center and the image sensor, significantly reducing image distortion. Compared to plastic injection molded parts, die-cast metal housings offer over three times greater impact resistance and can withstand extreme temperature cycles from -40°C to 125°C in automotive applications, meeting ISO 16750 automotive reliability standards. Furthermore, the metal housing inherently provides electromagnetic shielding, reducing electromagnetic interference (EMI) generated by internal circuitry by 20-30dB. This is crucial for signal stability when multiple cameras operate collaboratively in autonomous driving.

Ⅱ. Technical Features: Integrated Design and Scenario Adaptation

The unique nature of the die-casting process has driven innovation in camera structural design. Jiarui Metal's patented automotive Housing for Surveillance Camera front cover utilizes integrated die-casting, consolidating three to five traditional assembly parts into a single component. This not only reduces assembly errors, but also reduces housing weight by 15% and increases production efficiency by 40%. This design is particularly advantageous in multi-camera modules. Its complex internal cavity structure enables independent heat dissipation and signal isolation for each lens, eliminating the thermal crosstalk problem associated with traditional spliced structures.

Breakthroughs in mold technology support innovative functional integration. The die-casting mold utilizes H13 hot-work die steel. After nitriding, it can withstand repeated exposure to molten metal at temperatures of 600-1200°C, achieving a lifespan of over 100,000 cycles. A dedicated overflow trough and large venting slots effectively prevent internal air holes in the casting, ensuring the security camera's seal in high-humidity environments (IP6K9K protection rating). Micro-arc oxidation technology creates a 5-15μm ceramic oxide layer in the surface treatment process, increasing the camera housing's salt spray resistance from 240 hours to 1000 hours, meeting the demands of harsh environments such as offshore wind power.

III. Technical Features: Multi-Dimensional Breakthroughs in Precision Manufacturing

Optimizing material formulation is the core technology behind the die-cast Housing for Surveillance Camera. By precisely controlling the ratios of Si (3%-5%), Zn (0.6%-1.2%), and Mg (0.3%-0.9%), the alloy maintains fluidity while enhancing mechanical properties through the strengthening phases of Mg₂Si and MgZn₂. Adding 0.1%-0.3% of a rare earth element (Re) significantly improves melt fluidity, addressing the challenge of filling thin-walled parts (down to 0.5mm), which is crucial for the compact design of periscope telephoto lenses in mobile phones.

Precise control of process parameters determines ultimate performance. The die-casting process utilizes a gradient temperature control strategy: the molten aluminum temperature is maintained at 690-710°C. A low speed phase (0.18-0.25 m/s) ensures smooth filling of the molten metal, while a high speed phase (3.5 m/s) allows for rapid cavity filling. Combined with a mold cooling time of 8-12 seconds, this achieves castings with a density exceeding 99.5%. Subsequent CNC finishing controls the flatness of key mating surfaces to within 0.005mm/m, providing a stable mounting base for the optical lens.

IV. Industry Applications and Development Trends

With the increasing popularity of intelligent driving and ultra-high-definition surveillance, die-cast Housing for Surveillance Camera are moving from the high-end market to mainstream applications. The automotive camera market is expected to reach 42 billion yuan in 2025, with the number of cameras installed per vehicle increasing to 11.5. High-resolution modules with over 8 megapixels generally adopt a die-cast structure. In the consumer electronics sector, module manufacturers have begun developing integrated die-casting technology for glass lenses and metal brackets. This technology is expected to reduce camera module thickness by 20%, contributing to the trend towards thinner and lighter smartphones.

In the future, with the application of new materials such as high-entropy alloys and the maturity of vacuum die-casting technology, die-cast Housing for Surveillance Camera will achieve thermal conductivity exceeding 200W/(m・K) and a further 10% weight reduction. Combined with an AI-driven intelligent manufacturing system, die-casting process parameters can be optimized in real time, increasing product yield from the current 92% to over 97%, further lowering the cost threshold for large-scale application. This deep integration of materials, processes, and application requirements is redefining the performance boundaries of camera hardware.