Dongguan Zhonghui Precision Die Casting Technology Co., Ltd.
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Discover our high-quality products sourced directly from the leading suppliers in China. Our factory is dedicated to manufacturing innovative and durable items that meet international standards. With a wide range of offerings, we ensure that our customers receive exceptional value and satisfaction. Partnering with trusted suppliers, we focus on delivering products that enhance your business operations. Experience the reliability and efficiency of products made in China, designed to contribute to your success. Choose our factory for superior craftsmanship and quality assurance in every purchase
  • Die Casting Machine Cold Chamber Alum Die Cast Machine 280T
  • Die Casting Method Precision Die Casting
  • Application Inverter power supply, switching power supply, laser power supply, welding machine, communication transmitter, base station, control cabinet, power regulator
  • Machining CNC Machining
  • Material ADC12
  • Surface Power spraying
  • Certification ISO 9001:2015
  • Capacity 500000 Pieces/Year
  • Transport Package Wooden Pallet
  • HS Code 7616991090
  • Origin Dong Guan of China
  • Shipment By airmail or by Sea
  • Due-date Two month
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Product Detail

Features

With the rapid development of 5G technology, base stations are crucial to ensure continuous connections and fast data transmission.
The product's exceptional durability is one of its main advantages. The cover is constructed from high-quality aluminum for superior strength and corrosion resistance, ensuring long-lasting performance even in the most demanding conditions.
The aluminum top is not only sturdy but also provides good heat control. Because the material has strong thermal conductivity, it can effectively dissipate heat, minimize overheating, and ensure that the base station operates at maximum efficiency.
Furthermore, the design of the lid is both elegant and functional. It has a sleek, modern style that blends easily into its surroundings, making it ideal for urban environments and public spaces.

Process

Step 01
Aluminum die casting

Equipment & Material: 800T aluminum die casting machine; ADC12 material

Process characteristics:

a. The furnace temperature is 670°±20°, and the material handle is 20±2 mm.

b. It is impossible to utilize secondary materials.

c. Material composition must be tested to ensure it is suitable for production.

d. After die casting, the first piece must be confirmed.

Precautions:
a. Verify the quality of surface filling. No bulging, no cold isolation, and no shortage of materials in the column.
b. Avoid mold stringing, sticking or insufficient ejector protrusion.
c. Non-machined surfaces: ejector pin concave 0-0.2mm; machined surfaces: ejector pin convex 0-0.2mm.
Step 02
Take out the nozzle & pull out slag bag

Tools: Stick or saw

Things to note:
a. Pay attention to the surface and don't damage it or use insufficient material.
b. Manage size and appearance.
Step 03
IPQC inspection

Testing instruments: Three-dimensional, appearance visual evaluation, projection, calculator

Precautions:
Please take the following precautions: Check dimensions against drawings and use accurate measuring equipment.
Step 04
Dimension check against drawings

Please take the following precautions: Check dimensions against drawings and use accurate measuring equipment.

Note:
Within 0.25 mm from the front of the product
Step 05
CNC (Deburring + Full Material Inspection + CNC Processing)

a. CNC turning: Process the through hole of the perforation, the end face of the inner cavity and the surrounding heat dissipation tooth surface. Tools: CNC machine tools, drill bits, tap processing fixtures, flat bottom milling cutters.

b. Burr: To achieve a smooth appearance, the product's sharp corners are chamfered, deburred, and non-machined ejector pins are sharpened and polished. Equipment: 120# sandpaper, wind mill, file

c. Appearance visual assessment and 100% material inspection

Note:
a. Avoid excessive cutting or improper processing;
b. Be careful not to burr or scratch the surface;
c. Verify that the finish of the machined surface is Ra0.8 and that size and shape meet limits.
d. R corners should connect smoothly, no burrs or sharp corners left, no processing missed.
e. Surface must be free of burrs, blisters, lack of material.
f. Use go gauge and stop gauge to detect.
g. Verify product flatness against design.
h. Handle carefully to avoid deformation.
Step 06
IPQC inspection

Visual inspection of appearance

Step 07
Polish (manual removal)

Product clamp caps, slag bags, gate residues, surface particles, etc. need to be removed.

The clamping line should be smoothly connected to other parts without removing sharp edges or corners.

Step 08
IPQC inspection

Visual inspection of appearance

Step 09
Regional powder spraying and organizational powder spraying

Test Equipment: Appearance visual inspection combined with colorimeter, film thickness meter, salt spray tester, hundred grid tester, alcohol resistance test, pencil test.

Note:
a. The painted and baked-proof fractal area is clearly visible;
b. The color is consistent with the sample and the color is uniform;
c. There is no abnormal color, dirt, exposed bottom, dust accumulation, scratches, etc.
Step 10
IPQC inspection/IQC incoming inspection

Visual inspection of appearance; inspection of specific quality.

Preventative measures include: Verifying surface condition after powder coating; b. Randomly inspect/test holes using a pin gauge or a hole gauge.

Step 11
Full inspection of appearance + packaging

Thoroughly inspect the goods and packaging.

Consumables: dividers, containers, bubble wrap and desiccant

Precautions:
a. Appearance checked based on samples. No dents, scratches or blemishes, smooth glue application.
b. Pass and stop inspection requirements of tooth profile must be met.
c. After product is inserted into knife card, top layer is covered with flat cardboard and wrapped.
Step 12
FQC exam

Testing instruments: Calipers, projectors, pin gauges, tooth gauges, visual and packaging inspection.

NOTE: Verify that the measurement device is still within its calibration window.

Step 13
Transportation

Prepare for transit and delivery.

Prepare for a rainy day:
a. Confirm that the quantity matches the order.
b. Label and stamp the outer box.
c. Send reports on shipments.
Step 14
OQC shipping inspection

Testing instruments: calipers, projectors, pin gauges, tooth gauges, outer packaging inspection, etc.

Note:
If the measuring device is still within its calibration window. Whether it meets both customer and SIP requirements.

Frequently Asked Questions

What material is used for the base station cover and why?
The cover is constructed from high-quality aluminum (ADC12). Aluminum is chosen for its superior strength, corrosion resistance, and high thermal conductivity, which allows it to effectively dissipate heat and keep base stations operating at maximum efficiency.
What die casting equipment and parameters are used in production?
We utilize an 800T aluminum die casting machine. The process requires a furnace temperature of 670°±20° and a material handle of 20±2 mm. Secondary materials are not permitted to ensure structural integrity.
How is the quality of the CNC machined surfaces ensured?
During CNC processing, we verify that the finish of the machined surface reaches Ra0.8. We check flatness against design requirements, use go/stop gauges to detect tolerances, and perform 100% material inspections to prevent burrs, blisters, or scratches.
What testing instruments are used for quality control inspections?
We use a range of precise instruments across multiple stages (IPQC, FQC, OQC), including three-dimensional coordinate measuring machines, projectors, calipers, pin gauges, tooth gauges, colorimeters, film thickness meters, and salt spray testers.
What are the requirements for the powder spraying process?
Powder spraying requires that the fractal area is clearly visible, the color is uniform and matches the sample, and the surface is free of abnormal color, dirt, exposed bottom, dust accumulation, or scratches. Quality is verified via film thickness, salt spray, hundred grid, and alcohol resistance tests.
How are the finished parts packaged for shipment?
Products undergo a full appearance inspection and are inserted into dividers (knife cards). The top layer is covered with a flat cardboard, wrapped securely using bubble wrap, and packed with desiccant to prevent damage and moisture during transit.