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China Suppliers Factory Aluminum A383 Die Casting Enclosure for 5G RRU Station Base
Process
1, Aluminum die casting
Equipment & Material
Equipment: 400T aluminum die casting machine, Material: A380
Process characteristics
- a. Furnace temperature: 670°±20°, Material handle: 20±2MM;
- b. Secondary materials cannot be used;
- c. Test the material composition to confirm that it is OK and can be produced;
- d. First piece confirmation is required after die-casting.
Precautions
- a. The filling quality of the surface needs to be confirmed. No cold insulation, no bulging, or lack of material for the pillars.
- b. Pay attention to the surface to avoid sticking molds, drawing molds, or poor ejector pin convexity.
- c. The ejector pins are concave by 0-0.2mm for non-machine-added surfaces and 0-0.2mm for machine-added surfaces. The thimble needs to be convex 0-0.2mm.
2, Remove spout （Saw spout and knock out slag bag）
Equipment
Wooden Stick/sawing machine/labor protection gloves
Precautions
- a. Pay attention to the surface without crushing or shortage of materials.
- b. Control the appearance and size.
3, IPQC inspection
Test tool
Caliper, projection, three-dimensional, visual inspection of appearance.
Precautions
Use measuring tools correctly and check dimensions according to drawings.
4, Grinding
Details
The sharp corners of the product are chamfered, deburred, non-machined ejector pins are sharpened, and polished to smooth the appearance.
Equipment
wind grinder, 120# sandpaper
Precautions
No processing should be missed, no sharp corners or burrs should be removed, and the R corners should be connected smoothly.
5, SHAPING
Equipment
knife-edge ruler, shaping fixture
Precautions
Within 0.25mm of the front plane of the product
6, IPQC inspection
Visual inspection of appearance
7, CNC（CNC machining + Deburring + cleanning）
Details
CNC machining + Tapping of 2 through holes for M3 teeth
Equipment
Tapping Machines/M3 Taps, Burr knife/Ultrasonic cleaning tank/Air gun.
Precautions
- a. Do not over-cut or miss processing;
- b. Be careful not to scratch or burr the surface;
- c. Guaranteed dimensional and form tolerances
8, Cleanning + Passivation
Details
CNC machining + Tapping of 2 through holes for M3 teeth
Equipment
Tapping Machines/M3 Taps, Burr knife/Ultrasonic cleaning tank/Air gun.
Precautions
- a. Surface residual water droplets need to be baked clean !
- b. Salt mist test requires 48 hours !
- c. The surface is not allowed to have dirt, oil, color !
9, Laser engraving two O-port location planes
Equipment
Laser engraving machine, laser engraving fixture
Note
- a. Check that there can be no burrs, particles, aluminum chips on the edge of the O-shaped orifice;
- b. The plane should be complete laser engraving, and the surface after laser engraving is not allowed to be polluted with oil and black marks!
10, 100% material inspection- Appearance visual inspection
Note
- a. Appearance should be inspected according to the sample, and the surface should be free from dirt, scratches and defects.
- b. The tooth pattern should be in accordance with the checking of through and through rule.
- c. The products are put into the blister tray, covered with white rice paper and then packed into boxes.
11, IPQC inspection:
Visual inspection of appearance
12, Full inspection of appearance + packaging
Details
Comprehensive inspection of products and packaging
Equipment
Carton, Knife card, Clapboaro, bubble bag
Note
- a. The appearance shall be inspected according to the sample. The surface shall be free of dirt, scratches, dents and defects, and the glue dispensing shall be even and without defects!
- b. The tooth pattern must comply with the pass-and-stop inspection.
- c. The product is placed in the knife card, covered with flat cardboard on the upper layer, and then packaged.
13, FQC inspection
Test Tools
Caliper, projection, needle gauge, tooth gauge, appearance and outer packaging inspection
Note
Whether the measuring tool is within the calibration period.
14, Shipping
Precautions
- a. make sure the quantity is the same as order.
- b. Label and stamp on the outer box
- c. Provide a shipping report.
15, OQC shipping inspection
Test Tools
Caliper, projection, needle gauge, tooth gauge, appearance and 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)
What material and equipment are used for the aluminum die casting process?
We utilize A380 material processed with a 400T aluminum die casting machine. Strict process specifications are followed, including keeping the furnace temperature at 670°±20° and ensuring secondary materials are not used.
What surface quality precautions are taken during the die casting and removal stages?
For die casting, we verify there is no cold insulation, bulging, or lack of material, while avoiding mold sticking and poor ejector pin convexity. During spout removal, we ensure the surface is free of crushing or material shortage.
What are the inspection requirements for IPQC and FQC?
IPQC and FQC inspections use precise tools including calipers, projection, three-dimensional, needle gauges, and tooth gauges to check dimensions against drawings, ensuring all measuring tools are within their calibration period.
What are the precautions during the CNC machining and passivation stages?
For CNC machining, we ensure no over-cutting, no scratches or burrs, and stable tolerances. For cleaning and passivation, residual water droplets must be baked dry, the surface must remain free of dirt/oil, and a 48-hour salt mist test is required.
How are the final products packaged and inspected before shipping?
Products undergo a 100% material and appearance inspection. They are placed in blister trays or knife cards, protected with white rice paper or flat cardboard, and packed in cartons. OQC shipping inspection then confirms quantity, labels, stamps, and calibration compliance.