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

China ADC12 Telecom Server Heatsink Enclosure Prototyping Part - Aluminum Die Cast Plating Suppliers & Factory

Discover our high-quality Aluminum Die Cast Plating Heat Sink, a perfect solution for efficient thermal management in various applications. Manufactured in China, this heat sink boasts superior conductivity and durability, making it ideal for electronic devices and LED lighting. As a leading supplier in the industry, our factory ensures meticulous attention to detail and strict quality control processes, providing you with reliable products that stand the test of time. Trust us to deliver exceptional performance and value, enhancing your designs with our aluminum heat sinks.

  • Die Casting Machine Cold Chamber Alum Die Cast Machine 500T
  • Die Casting Method Precision Die Casting
  • Application communication transmitter, base station
  • Machining CNC Machining
  • Material HH33GR
  • Surface Cleaning + Leather Coating
  • Certification ISO 9001:2015
  • Capacity 500000 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

01 Aluminum die casting
Equipment & Material
Equipment: 500T aluminum die casting machine
Material: HH33GR
Process Characteristics
  • Furnace temperature: 670°±20°
  • Material handle: 20±2MM
  • Secondary materials cannot be used
  • Test the material composition to confirm that it is OK and can be produced
  • First piece confirmation is required after die-casting
Precautions:
  • The filling quality of the surface needs to be confirmed. No cold insulation, no bulging, or lack of material for the pillars.
  • Pay attention to the surface to avoid sticking molds, drawing molds, or poor ejector pin convexity.
  • 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
Hydraulic presses
Precautions:
  • Pay attention to the surface without crushing or shortage of materials.
  • 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 SHAPING
Process Details
Back shaping
Equipment
Cutting edge ruler, shaping tooling, hydraulic presses
Precautions:
  • Within 0.3mm of the front plane of the product.
05 IPQC inspection
Description
Visual inspection of appearance
06 CNC
Description
Machining of internal cavity end faces, Backside holes, Side of one end, Hole through-hole
Equipment
CNC machine, flat-bottomed gong tool, Drill Bit, Tap machining jig
Precautions:
  • Do not overcut, missed processing;
  • Surface attention must not be bruised, burrs; and
  • Ensure that the surface finish Ra0.8, size, shape and location tolerances.
07 100% material inspection
Description
Visual inspection of appearance
Note:
  • The surface of the product should not be overcut, sand holes, lack of material. Burrs, and other undesirable phenomena
  • go-no go fixed gauges inspection
  • Test the flatness of the product according to the drawing.
  • Hold the product lightly to prevent deformation.
08 Grinding
Description
Chamfering R-angle, deburring, thimble shaving on non-machined surfaces, polishing and smoothing the shape
Equipment
Air grinder, 120# sandpaper
Note:
  • Do not miss the processing, no sharp corners, burrs removed cleanly, connected to the R angle of the smooth.
09 IPQC inspection
Description
Visual inspection of appearance
10 Chemical conversion membrane
Description
Surface treatment process
Precautions:
  • No different colors, no dirty, not touching and scratching;
  • Color according to the sample, uniform and consistent.
11 IPQC inspection + Special Characteristics Inspection
Description
Visual inspection of appearance
Precautions:
  • Surface quality confirmation after coating;
  • Hole need to needle gauge sampling, go -no go fixed gauges inspection.
12 Full inspection of appearance + packaging
Description
Comprehensive inspection of products and packaging
Equipment
Cartons, dividers, bubble wrap, desiccant
Precautions:
  • 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 the go – no go fixed gauge inspection;
  • The product is placed in the knife card, covered with white rice paper on the upper layer, and then packaged.
13 FQC inspection
Test Tools
Caliper, projection, needle gauge, tooth gauge, appearance and outer packaging inspection.
Precautions:
  • Whether the measuring tool is within the calibration period.
14 Shipping
Precautions:
  • make sure the quantity is the same as order.
  • Label and stamp on the outer box
  • 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

Q1: What are the primary equipment and materials used in the aluminum die casting process?

The casting stage utilizes a 500T aluminum die casting machine and HH33GR material. The furnace temperature is strictly maintained at 670°±20° with a material handle of 20±2mm. Secondary materials are prohibited.

Q2: How is quality controlled during CNC machining?

We use CNC machines, flat-bottomed gongs, drill bits, and tap jigs. Operators monitor the setup closely to prevent overcutting or missed processing while ensuring a surface finish of Ra0.8 and maintaining tight dimensional tolerances.

Q3: What specific inspection gates are implemented throughout production?

Products undergo multiple inspection gates: initial IPQC checks, a 100% material inspection, FQC inspection, and a final OQC shipping inspection. These tests employ calipers, projections, needle gauges, and go/no-go fixed gauges.

Q4: What precautions are taken during the chemical conversion membrane process?

To ensure membrane integrity, the surface must be free of color inconsistencies, dirt, scratches, or touch marks. The color must match the approved reference sample uniformly.

Q5: How are products packaged to prevent damage during transit?

Inspected products are placed securely inside knife card dividers, covered with white rice paper on the upper layer, and packed into cartons with bubble wrap and desiccant to prevent scratching, denting, or moisture accumulation.

Q6: What is verified during the final shipping and OQC stage?

We confirm that the final quantity matches the customer order, verify that all packaging is stamped and labeled properly, provide a complete shipping report, and ensure all inspection tools are within calibration limits.