China OEM Aluminum Die Casting Heatsink for 5G Base Station - Trusted Suppliers and Factory Solutions
Process
- a. Furnace temperature: 640°±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.
- 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.
- a. Pay attention to the surface without crushing or shortage of materials.
- b. Control the appearance and size.
- 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.
- a. The surface of the product should not be overcut, sand holes, lack of material, burrs, and other undesirable phenomena.
- b. go-no go fixed gauges inspection.
- c. Test the flatness of the product according to the drawing.
- d. Hold the product lightly to prevent deformation.
- a. No different colors, dirty, not touching and scratching;
- b. Color according to the sample, uniform and consistent;
- c. Powder thickness is uniform, no accumulation of tumors, no exposed bottom.
- a. Confirm the surface quality after powder spraying;
- b. The holes need to be randomly inspected with a needle gauge/tested with a tooth hole pass gauge.
- a. The appearance shall be inspected according to the sample. The surface shall be free of dirt, scratches, dents and defects.
- b. The tooth pattern must comply with the go – no go fixed gauge inspection;
- c. The product is placed in the knife card, and then packaged.
- a. Make sure the quantity is the same as order.
- b. Label and stamp on the outer box
- c. Provide a shipping report.
Frequently Asked Questions
Q1: What are the primary material and temperature specifications for the die casting process?
The process utilizes ADC12 material. The furnace temperature is strictly maintained at 640°±20° with a material handle of 20±2MM. Secondary materials are strictly prohibited to ensure optimal structural integrity.
Q2: How is the quality of the surface verified during the initial stages?
The filling quality of the surface is systematically checked to confirm there is no cold insulation, bulging, or lack of material for the pillars. Attention is paid to avoid sticking molds, drawing molds, or poor ejector pin convexity.
Q3: What precision requirements are enforced during CNC machining?
During CNC machining, operators must ensure that no over-cutting or missing processing occurs, and the surface remains free of scratches or burrs. The finished surface must achieve a roughness of Ra1.6, with tight size and shape tolerances.
Q4: What inspections are performed after powder spraying?
After powder spraying, an IPQC and Special Characteristics Inspection are conducted. The surface quality is confirmed to ensure no color differences, dirt, or scratches. Additionally, holes are randomly inspected with needle gauges or tooth hole pass gauges.
Q5: What packaging standard is followed to protect the products during shipment?
Products are placed securely into a knife card setup within cartons, using clapboards and bubble bags. Visual inspection confirms the surface is free of dirt, scratches, dents, and defects before final dispatch.
Q6: How does the facility ensure the accuracy of FQC and OQC test tools?
For both FQC and OQC inspections, tools such as calipers, projection systems, needle gauges, and tooth gauges are strictly verified to ensure they are within their valid calibration periods and comply with SIP and customer requirements.