China Zinc Alloy Server Racks from Top Suppliers - Durable Zamak 3 Zinc Alloy Casting Factory Parts
Process
ZINC Die Casting
138T zinc die casting machine; ZA 3# material
- The furnace temperature is 420°±20°, and the material handle is 20±2 mm.
- Secondary materials cannot be used.
- Material composition must be tested to ensure it is suitable for production.
- The first piece must be confirmed.
- Verify the quality of surface filling (no bulging, no cold isolation, no shortage of materials in the column).
- Avoid mold stringing, sticking, or insufficient ejector protrusion.
- Ejector pin requirement: concave 0-0.2mm for non-machined surfaces; convex 0-0.2mm for machined surfaces.
Remove Spout
Stick / saw machine
- Pay attention to the surface and don't damage it or use insufficient material.
- Manage size and appearance.
IPQC Inspection
Three CMM, appearance visual evaluation, projection, calculator
Check dimensions against drawings and use accurate measuring equipment.
Deburring
Sharp angle position inverted R angle, deburring, non-machining surface top needle draping, grinding and connecting shape.
File, Wind mill, 120# sandpaper
No sharp corners, burrs to remove clean, along the R angle.
Shaping
PRODUCT BACK SHAPING
knife-edge ruler, shaping fixture, Rubber hammers, rubber pads
Within 0.2mm of the front plane of the product
CNC
- A-Tapping two 6-32 teeth on each side face with a depth of 5.32+0.35mm/-0.15mm.
- B-Tapping four 6-32 teeth on front face with a depth 8mm.
tapping machine, jigs
- Hold the product lightly when processing, so as not to bruise the product.
- Place the products neatly and take the products to blow clean the surface of the jig.
- Refer to the requirements of the inspection specification for the appearance of the products.
- If there are any defects or other emergencies, please report to the superior immediately.
- Please pay attention to the processing and transportation process do not touch, scratch the product surface.
Grinding
Remove product clamping line draping, surface particles, slag ladle, gate residue
File, wind grinder, 120# sandpaper
Do not leak processing, do not exist sharp corners, draping clean, mold closing line.
100% Material Inspection
Appearance Visual Inspection
- 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.
IPQC Inspection
Visual inspection of appearance
Cleaning + Chemical Conversion Membrane + Drying
Surface preparation, chemical coating, and drying cycle.
No different color, dirty, not touching and scratching.
Full Inspection of Appearance + Packaging
Comprehensive inspection of products and packaging
Carton, knife card, clapboard, bubble bag
- The appearance shall be inspected according to the sample. The surface shall be free of dirt, scratches, dents and defects.
- The tooth pattern must comply with the pass-and-stop inspection.
- The product is placed in the knife card, covered with flat cardboard on the upper layer, and then packaged.
FQC Exam
Calipers, projectors, pin gauges, tooth gauges, visual and packaging inspection
Verify that the measurement device is still within its calibration window.
Transportation
Logistics and shipment preparation.
- Confirm that the quantity matches the order.
- Label and stamp the outer box.
- Send reports on shipments.
OQC Shipping Inspection
Calipers, projectors, pin gauges, tooth gauges, outer packaging inspection, etc.
Verify if the measuring device is still within its calibration window. Confirm whether it meets both customer and SIP requirements.
Q1 What are the critical control parameters for the ZINC Die Casting stage?
The key parameters include maintaining a furnace temperature of 420°±20° and a material handle length of 20±2 mm. Additionally, secondary materials are strictly prohibited, material composition must be verified, and the first piece must be confirmed before proceeding.
Q2 What are the tooling and precaution requirements for the Deburring phase?
Deburring utilizes files, wind mills, and 120# sandpaper. It is critical to ensure no sharp corners remain, all burrs are cleaned along the R-angle, and non-machining surface top needle draping is properly ground.
Q3 How is product safety ensured during CNC processing?
During CNC processing, operators must handle the products lightly to prevent bruising. Additionally, the jig surfaces must be blown clean before placement, and strict care must be taken during transportation to avoid scratches or surface contact defects.
Q4 What is the role of FQC and OQC during the final quality control check?
FQC and OQC verify that all testing instruments (calipers, projectors, pin/tooth gauges) are within their calibration window. They check that the products meet customer specifications, SIP requirements, and that the outer packaging is fully inspected.
Q5 How are the finished products packaged for transport?
Products are thoroughly checked against reference samples to ensure they are free of dirt, scratches, and dents. They are then placed inside a knife card structure, covered with flat cardboard on the top layer, and packed into cartons with bubble bags and clapboards.