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China Aluminum A383 Die Casting 5G RRU Station Base Enclosure - Quality Suppliers & Factory Solutions
Process
01 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.
02 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.
03 IPQC inspection
Test tool
Caliper, projection, three-dimensional, visual inspection of appearance.
Precautions
Use measuring tools correctly and check dimensions according to drawings.
04 Grinding
Description
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.
05 SHAPING
Equipment
knife-edge ruler, shaping fixture
Precautions
Within 0.25mm of the front plane of the product
06 IPQC inspection
Description
Visual inspection of appearance
07 CNC（CNC machining + Deburring + cleanning）
Description
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
08 Cleanning + Passivation
Description
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 !
09 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
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)
Q1: What raw material and equipment are used for aluminum die casting?
A: We utilize a high-performance 400T aluminum die casting machine and premium A380 aluminum material to ensure optimal structural integrity and thermal properties.
Q2: How do you prevent surface defects on the die-cast parts?
A: We conduct strict first-piece confirmation. Our operators inspect the filling quality to ensure no cold insulation, bulging, or mold sticking, maintaining precise thimble and ejector pin tolerances.
Q3: What precision testing tools do you use for quality inspection?
A: We use a comprehensive suite of inspection equipment, including calipers, projectors, three-dimensional measuring systems, needle gauges, and tooth gauges to guarantee dimensional compliance.
Q4: What are the requirements for the cleaning and passivation stage?
A: After ultrasonic cleaning, the parts undergo passivation to prevent oxidation. We strictly require a 48-hour salt mist test to verify the corrosion resistance of the treated surface.
Q5: How are the finished components packaged to prevent damage during shipping?
A: Products are carefully arranged in blister trays or custom knife cards, separated by cardboard layers, and packed in strong cartons with bubble bags to prevent scratches or dents.