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China Aluminum Casting Communication Terminal Base Enclosure - Quality Products from Trusted Suppliers and Factory
Manufacturing Process
1
Aluminum Die Casting
Process Characteristics
1650T aluminum die casting machine; ADC12 material
- a. Material handle: 20±2mm, furnace temperature: 640°±20°;
- b. The use of secondary items is not allowed;
- c. Verify through testing that the material composition is suitable and can be manufactured;
- d. After die casting, first piece confirmation is required.
Note
- a. Verify the filling quality of the surface. It’s not the bulge, it’s not the cold insulation, it’s not the lack of material in the pillars.
- b. Pay attention to the surface to prevent poor ejector pin crown, mold pulling or mold sticking.
- c. For non-machined surfaces and machined surfaces, the ejector pins are concave by 0-0.2 mm. The ejector pin must have a convex shape of 0-0.2 mm.
2
Remove Spout
Equipment
A wooden stick / sawing machine
Things to Note
- a. Pay attention to the surface and don't damage it or use insufficient material.
- b. Adjust size and appearance
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
Front Stamping
Tools
Hydraulic presses, forming tools and blade rulers
Precautions
Within 0.3mm of the front plane of the product
5
IPQC Inspection
Inspection Details
Visual inspection of appearance
6
Pressed Copper Heat Pipe - Burying Heat Pipes as per Drawings
Equipment
Pressure Heat Pipe Fixture
Precautions
- a. Copper tube must not warp and deform, rupture;
- b. Filler is full, no air bubbles;
- c. The surface should be careful not to bruise or burr.
- d. The position of copper pipe is accurate.
7
IPQC Inspection
Inspection Details
Visual inspection of appearance
Precautions
- a. The copper tube must not warp and deform or rupture;
- b. The filler is full and free of air bubbles;
8
CNC Machining
Details & Equipment
Machining main Inlet, main Dump Port Face, Backside, Perforated Overbore
Equipment: CNC machine, flat-bottomed cutter, drill bit, tap processing fixture.
Note
- a. Do not over-cut or miss processing;
- b. Be careful not to scratch or burr the surface;
- c. Ensure the finish of the processed surface is Ra1.6, and the size and shape tolerances.
9
100% Material Inspection - Appearance Visual Inspection
Precautions
- a. The surface of the product must be free of overcutting, sand holes, lack of material, burrs, and other undesirable phenomena.
- b. Via pass and stop gauge detection
- c. Check the flatness of the product according to the drawings
- d. Handle the product gently to prevent deformation
10
Grinding
Process & Equipment
The sharp corners of the product are chamfered, deburred, non-machined ejector pins are sharpened, and polished to smooth the appearance.
Equipment: File, wind grinder, 120# sandpaper
Note
No processing should be missed, no sharp corners or burrs should be removed, and the R corners should be connected smoothly.
11
IPQC Inspection
Inspection Details
Visual inspection of appearance
12
Cleaning + Chemical Conversion Membrane + Drying + Powder Spraying
Precautions
- a. No different color, dirty, not touching and scratching
- b. Color according to the sample, uniform and consistent
- c. Powder thickness uniformity, no accumulation of tumor, no exposed bottom
13
IPQC Inspection
Inspection Details
Visual inspection of appearance, special characteristic inspection
Note
- a. After the film/powder coating surface quality confirmation.
- b. Hole need to needle gauge sampling, tooth hole through the go-no go fixed gauges detection
14
Full Inspection of Appearance + Packaging
Equipment
Carton, knife card, clapboard, 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 go- no go fixed gauges inspection.
- c. The product is placed in the knife card, covered with flat cardboard on the upper layer, and then packaged.
15
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.
16
Full Inspection + Packaging Inspection
Notes
- 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 of the knife card with a flat cardboard and package it.
17
Transportation
Note
- a. Confirm that the quantity matches the order.
- b. Label and stamp the outer box.
- c. Send reports on shipments.
18
OQC Shipment Inspection
Inspection Instruments
Calipers, projectors, tooth gauges, needle gauges, appearance, outer packaging inspection
Prepare for a rainy day
If the measuring device is still within its calibration window. Whether it meets both customer and SIP requirements.
Frequently Asked Questions
What raw material and equipment are used for the die casting process?
We use high-quality ADC12 material processed via a 1650T aluminum die casting machine. The process maintains a strict furnace temperature of 640°±20° and a material handle size of 20±2mm to ensure optimal structural integrity.
How is the quality of the buried copper heat pipes verified?
Burying heat pipes requires a specialized pressure heat pipe fixture. Our IPQC inspection ensures the copper tubes do not warp, deform, or rupture, the filler is full and completely free of air bubbles, and the placement matches the drawings precisely.
What are the tolerance and finish standards for CNC machined parts?
During the CNC machining phase, we ensure the processed surface finish achieves an Ra1.6 standard. Dimensions and shape tolerances are strictly controlled according to the technical drawings to prevent over-cutting or surface scratches.
What inspections are performed during the powder spraying and coating phase?
We perform chemical conversion membrane treatment, drying, and powder spraying. IPQC verifies that the powder thickness is uniform, color matches the approved sample, and the surface is free of accumulation, exposed bottom, or scratches.
How are the final products packaged to prevent shipping damage?
Products undergo a full visual check. Approved units are placed securely into custom knife cards, covered with a flat cardboard protection layer, and packaged inside bubble bags and heavy-duty cartons to avoid any transit dents or scratches.
How are measuring instruments calibrated for quality control?
All testing tools, including calipers, projectors, needle gauges, and tooth gauges used in FQC and OQC stages, are verified before inspection to ensure they are within their active calibration periods and comply with customer and SIP specifications.