Dongguan Zhonghui Precision Die Casting Technology Co., Ltd.
Leave Your Message
Products Categories
Featured Products

China Aluminum Casting Communication Terminal Base Enclosure - Quality Suppliers & Reliable Factory Solutions

Discover our premium quality products sourced directly from top manufacturers in China. As leading suppliers in the industry, our factory is committed to delivering excellence and innovation. Each item reflects the highest standards of craftsmanship and cutting-edge technology, making us your trusted choice for reliable and efficient products. Elevate your business with our competitive pricing and exceptional service, and experience the advantage of partnering with reputable China suppliers and factories
  • Die Casting Machine Cold Chamber Alum Die Casting Machine 1650T
  • Die Casting Method Precision Die Casting
  • Application Communications Industry
  • Machining CNC Machining
  • Material ADC12
  • Surface Chemical conversion membrane + Power Spraying
  • Certification ISO 9001:2015
  • Customized Dispensing, Copper Tubing
  • Capacity 400000 Pieces/Year
  • Transport Package Wooden Pallet
  • HS Code 7616991090
  • Origin Dong Guan of China
  • Shipment By airmail or by Sea
  • Due-date Two month

Process

Step 1

Aluminum Die Casting

Equipment & Material

1650T aluminum die casting machine; ADC12 material

Process Characteristics
  • Material handle: 20±2mm, furnace temperature: 640°±20°
  • The use of secondary items is not allowed
  • Verify through testing that the material composition is suitable and can be manufactured
  • After die casting, first piece confirmation is required
Note
  • 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.
  • Pay attention to the surface to prevent poor ejector pin crown, mold pulling or mold sticking.
  • 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.
Aluminum die casting process setup
Step 2

Remove Spout

Equipment

a wooden stick/ sawing machine

Things to note
  • Pay attention to the surface and don't damage it or use insufficient material.
  • Adjust size and appearance
Remove spout setup
Step 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.

Step 4

Front Shamping

Tools

Hydraulic presses, forming tools and blade rulers

Precautions

Within 0.3mm of the front plane of the product

Front shamping tools
Step 5

IPQC Inspection

Inspection Details

Visual inspection of appearance

Step 6

Pressed Copper Heat Pipe - Burying Heat Pipes as per Drawings

Equipment

Pressure Heat Pipe Fixture

Precautions
  • Copper tube must not warp and deform, rupture
  • Filler is full, no air bubbles
  • The surface should be careful not to bruise or burr
  • The position of copper pipe is accurate
Pressure heat pipe setup
Step 7

IPQC Inspection

Inspection Details

Visual inspection of appearance

Precautions
  • The copper tube must not warp and deform or rupture
  • The filler is full and free of air bubbles
Step 8

CNC Machining

Details

Machining main Inlet, main Dump Port Face, Backside, Perforated Overbore

Equipment

CNC machine, flat-bottomed cutter, drill bit, tap processing fixture.

Note
  • Do not over-cut or miss processing
  • Be careful not to scratch or burr the surface
  • Ensure the finish of the processed surface is Ra1.6, and the size and shape tolerances
CNC Process 1CNC Process 2CNC Process 3
Step 9

100% Material Inspection - Appearance Visual Inspection

Precautions
  • The surface of the product must be free of overcutting, sand holes, lack of material, burrs, and other undesirable phenomena.
  • Via pass and stop gauge detection
  • Check the flatness of the product according to the drawings
  • Handle the product gently to prevent deformation
Step 10

Grinding

Details

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.

Grinding and deburring
Step 11

IPQC Inspection

Inspection Details

Visual inspection of appearance

Step 12

Cleaning + Chemical Conversion Membrane + Drying + Powder Spraying

Precautions
  • No different color, dirty, not touching and scratching
  • Color according to the sample, uniform and consistent
  • Powder thickness uniformity, no accumulation of tumor, no exposed bottom
Powder spraying process
Step 13

IPQC Inspection

Inspection Details

Visual inspection of appearance, special characteristic inspection

Note
  • After the film/powder coating surface quality confirmation.
  • Hole need to needle gauge sampling, tooth hole through the go-no go fixed gauges detection
Step 14

Full Inspection of Appearance + Packaging

Equipment

Carton, knife card, clapboard, bubble bag

Note
  • 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!
  • The tooth pattern must comply with go- no go fixed gauges inspection.
  • The product is placed in the knife card, covered with flat cardboard on the upper layer, and then packaged.
Packaging materials and setup
Step 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.

FQC inspection tools
Step 16

Full Inspection + Packaging Inspection

Notes
  • 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!
  • The tooth shape needs to match the pass gauge and stop gauge
  • Put the product into the knife card, cover the top of the knife card with a flat cardboard and package it.
Step 17

Transportation

Note
  • Confirm that the quantity matches the order.
  • Label and stamp the outer box.
  • Send reports on shipments.
Step 18

OQC Shipment Inspection

Inspection Instruments

calipers, projectors, tooth gauges, needle gauges, appearance, outer packaging inspection

Prepare for a rainy day (Precautions)

If the measuring device is still within its calibration window. Whether it meets both customer and SIP requirements.

Frequently Asked Questions (FAQ)

What type of raw material is used in the aluminum die casting process?
We use high-quality ADC12 material processed on a 1650T aluminum die casting machine. The furnace temperature is strictly maintained at 640°±20° to ensure material integrity.
What precautions are taken during the copper heat pipe pressing process?
We ensure the copper tubes do not warp, deform, or rupture. The filler must be fully packed without air bubbles, the surface must be free from bruises or burrs, and the tube position must be highly accurate.
What are the quality standards for the CNC machining stage?
CNC machining focuses on the main inlet, main dump port face, backside, and perforated overbore. We target a surface finish of Ra1.6 and prevent any over-cutting, missing processes, scratches, or burrs.
How do you check product dimensions and tolerances?
We conduct multiple IPQC, FQC, and OQC inspections using precise measuring instruments such as calipers, projectors, three-dimensional modeling, needle gauges, and go-no go thread gauges.
What packaging method is used to protect the finished products?
Products are fully inspected for appearance, placed securely inside custom knife cards, covered with a flat cardboard layer, and then packaged using cartons, bubble bags, and clapboards to prevent transit damage.