Dongguan Zhonghui Precision Die Casting Technology Co., Ltd.
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Discover our premium products manufactured in China, sourced directly from trusted suppliers and factories. Our commitment to quality and innovation ensures that each item meets the highest standards. By partnering with leading China suppliers, we guarantee reliable sourcing and exceptional craftsmanship. Explore our extensive range of products today and experience the benefits of working with a top-notch factory that prioritizes excellence and customer satisfaction. Enhance your business with our unique offerings and leverage the strength of China’s manufacturing industry
  • Die Casting Machine Cold Chamber Alum Die Casting Machine 400T
  • Die Casting Method Precision Die Casting
  • Application Communications Industry
  • Machining CNC Machining
  • Material ADC12
  • Surface Double-color 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

Product Display
ADC12 Precision Pressure casting aluminum alloy enclosure for 4G AAU base (1)
ADC12 Precision Pressure casting aluminum alloy enclosure for 4G AAU base (5)
ADC12 Precision Pressure casting aluminum alloy enclosure for 4G AAU base (7)
ADC12 Precision Pressure casting aluminum alloy enclosure for 4G AAU base (2)
Features
This state-of-the-art device combines cutting-edge technology with superior functionality to provide the best answer to your base station needs.
a. Excellent heat dissipation capabilities
As the demand for high-speed data transmission increases, thermal management becomes critical to ensure optimal performance of 4G networks. Our housings effectively dissipate heat, reducing overheating and ensuring smooth operation of the base station.
b. Excellent corrosion resistance
This is especially important for exterior installations, where equipment can be damaged by exposure to the elements. Our housings are engineered to withstand weather conditions, prevent corrosion and extend the life of your base station.
c. Lightweight, easy to manage and easy to set up
This is a big benefit, especially when setting up base stations in hard-to-reach places. The lightweight design reduces shipping costs while also making installation easier.
Process
1 Aluminum die casting

Equipment: 400T aluminum die casting machine; ADC12 material

Process characteristics:

  • Material handle: 20±2mm, furnace temperature: 670°±20°
  • Secondary items are not allowed
  • Verify through testing that the material composition is suitable and can be manufactured
  • After die casting, first piece confirmation is required
Note:
a. Pay attention to the surface and don't damage it or use insufficient material.
b. Manage size and appearance.
2 Remove spout (Saw spout and knock out slag bag)

Equipment: Sawing machine

Tools: wooden stick

Precautions:
a. Pay attention to the surface without crushing or shortage of materials.
b. Control the appearance and size.
3 IPQC inspection

Verify detailed dimensions in drawings.

Testing instruments: calipers, projection, three-dimensional modeling, visual appearance inspection

Precautions:
Check dimensions against drawings and use accurate measuring equipment.
4 Product back plastic surgery

Tools: Hydraulic presses, forming tools and blade rulers

Precautions:
Warning: The accuracy of the front of the product is within 0.25 mm.
5 CNC

a. Use CNC processing to process the through-hole of the tooth hole, the end face of the inner cavity, and the end face of the peripheral heat dissipation tooth face.

b. Deburring: In order to make the product smooth in appearance, the sharp corners are chamfered and deburred, and the non-machined ejector pins are sharpened and polished.

c. Complete check.

Use tools and equipment: Drill bits, flat bottom milling cutters, CNC machine tools, tap processing fixtures, 120# sandpaper, files, wind mill, tap processing fixture

Note:
a. Avoid over-cutting, leaving no sand holes, sharp edges, or missed processing; avoid scratches and burrs; and ensure smooth connection of the R corners.
b. Control dimensional and shape tolerances to ensure that the processed surface finish reaches Ra 0.8.
c. Regulation and non-regulation inspections.
d. Verify product is flat relative to drawing.
e. Handle items carefully to avoid deformation.
6 Polishing (hand removal)

Remove surface particles, slag bags, gate residues, and product wire caps.

Note:
The mold closing line should be connected smoothly, sharp edges or corners should not be ignored, and no processing should be ignored.
7 Outsourcing

Two-color spraying at different locations uses a combination of powder spraying and oil spraying.

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

Precautions:
a. No contrasting colors, dirt, exposed bottoms, dust accumulation, scratches or other issues; tinted and anti-bake fractals are clearly visible;
b. The color is completely consistent with the sample.
8 IPQC inspection/IQC incoming inspection

Standard quality control check on incoming processed parts.

Note:
a. Verify surface condition after powder coating;
b. Holes must be randomly inspected using pin gauges, pass gauges, and stop gauges.
9 100% inspection

a. 100% inspect the appearance of the powder-coated.

b. Conduct random inspections for the powder-coated performance test.

Note:
a. There is no obvious color, dirt, exposed bottom, dust accumulation, scratches, etc. in the coloring and baking-resistant fractal areas;
b. The color exactly matches the sample.
10 Dispense glue

The width and height are asymmetrically centered at 1.0±0.1, and glue to the designated strip area.

Tools: dispensing jigs and machines

Precautions:
a. The strips are uniform; they will not break, pile up, pull, overflow, deviate, bubble, fall off, etc.
b. Verify whether the glue cannot adhere or regenerate well, whether the glue strength is optimal, etc.
11 Composing the accessory assembly

a. Heat dissipation copper bar assembly position corresponding to glue assembly;

b. Sheet metal part M2.5*5 screw position locking to press heat dissipation copper block.

Components: SE4450 Five Heatsink Copper Bars with glue, Three pieces of sheet metal, Six half-round screws, M2.5*5.

Precautions:
a) The glue is dispensed into the copper bar dispensing slot in accordance with the sample;
b) Verify that the lock screw position is steady and the teeth are not slipping.
12 Drying

Carefully arrange the items on the baking line into 2 columns and 7 rows, for a total of 14 items. Bake at 150°C for 30 minutes.

Equipment: Dryer

Note:
Leave enough space between products, be careful not to touch the tunnel door, hold it gently to avoid any bruises.
13 100% inspection (appearance + packaging)

Final detailing verification before casing.

Note:
a. Appearance needs to be checked based on samples. There should be no dents, scratches or other blemishes on the surface and the glue application should be smooth and flawless!
b) The tooth shape needs to match the pass gauge and stop gauge;
c) Put the product into the knife card, cover the top layer of the knife card with flat cardboard, and package it.
14 FQC inspection

Inspection tools: calipers, projectors, needle gauges, tooth gauges, appearance and outer packaging inspection.

Precautions:
Whether the measuring tool is within the calibration period.
15 Transportation

Safe transport handling procedures.

Precautions:
a. Make sure the quantity is the same as the order.
b. Labels and seals on the outer box.
c. Provide shipping reports.
16 OQC shipping inspection

Inspection instruments: calipers, projectors, tooth gauges, needle gauges, appearance, outer packaging inspection.

Precautions:
Whether the measuring tool is within the calibration period. Whether it is consistent with SIP requirements and customer requirements.
Frequently Asked Questions (FAQ)
Q: What materials are used for the 4G AAU base station enclosure?
Our enclosures are manufactured using premium ADC12 aluminum alloy, processed via a high-precision 400T aluminum die casting machine to ensure optimal structural integrity and durability.
Q: How does the enclosure handle thermal management?
The enclosure is engineered with advanced heat dissipation capabilities and integrated heat sink copper bars. This design effectively manages thermal performance, preventing overheating and ensuring the continuous, smooth operation of the 4G network base station.
Q: Are these enclosures suitable for harsh outdoor environments?
Yes. The enclosure features excellent corrosion resistance, achieved through an advanced dual-color powder and oil spraying process. It is built to withstand extreme weather conditions, preventing degradation and extending the base station's lifespan.
Q: What quality control inspections do the products undergo?
We implement a rigorous multi-stage quality control system including IPQC dimensional checks, CNC tolerance audits (achieving Ra 0.8 surface finish), 100% cosmetic inspections after powder coating, FQC inspections using calibrated projection/caliper tools, and final OQC shipping audits.
Q: How is the accessory assembly secured and sealed?
We utilize automated dispensing machines to apply glue uniformly (1.0±0.1 mm width and height) to the designated slot. The copper bars and sheet metal components are then locked securely with M2.5*5 screws and baked in a professional drying system at 150°C for 30 minutes to guarantee optimal seal and structural strength.