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China A383 Aluminum Die Casting 5G RRU Station Base Enclosure - Reliable Suppliers & Factory Solutions
Process
1, Aluminum die casting
Equipment & Material
Equipment: 400T aluminum die casting machine
Material: A380
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
Description & Equipment
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
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
Description
Visual inspection of appearance
7, CNC（CNC machining + Deburring + cleanning）
Description & Equipment
CNC machining + Tapping of 2 through holes for M3 teeth
Equipment: Tapping Machines/M3 Taps, Burr knife/Ultrasonic cleaning tank/Air gun.
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
Description & Equipment
CNC machining + Tapping of 2 through holes for M3 teeth
Equipment: Tapping Machines/M3 Taps, Burr knife/Ultrasonic cleaning tank/Air gun.
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:
Description
Visual inspection of appearance
12, Full inspection of appearance + packaging
Description & Equipment
Comprehensive inspection of products and packaging
Equipment: Carton, Knife card, Clapboaro, bubble bag
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)
Q1: What raw materials and equipment are used for your aluminum die casting process?
A1: We utilize a high-performance 400T aluminum die casting machine and premium A380 aluminum alloy material. To ensure optimal structural integrity, we strictly prohibit the use of secondary or recycled materials.
Q2: How do you verify the quality of the raw material before production starts?
A2: Before starting production, we conduct material composition testing to confirm compliance with technical specifications. Production only commences once the material composition is verified as OK, followed by a first-piece confirmation.
Q3: What are the key quality control requirements for CNC machining and deburring?
A3: During CNC machining, we ensure zero over-cutting or missed processing steps, protect the surface against scratches or burrs, and strictly maintain the specified dimensional and form tolerances. We also perform precise tapping for M3 threaded holes.
Q4: What testing procedures and standards are applied during passivation and cleaning?
A4: Post-machining, all parts undergo ultrasonic cleaning. During passivation, any residual water droplets on the surface must be baked dry. The parts are then subjected to a rigorous 48-hour salt mist test, and the surface must remain free of dirt, oil, or discoloration.
Q5: How do you handle FQC and OQC inspections prior to shipment?
A5: We perform comprehensive FQC and OQC inspections using calibrated measuring tools, including calipers, projection systems, needle gauges, and tooth gauges. We verify that all tools are within their calibration period and ensure the final products conform strictly to SIP and customer requirements.