Aluminum Die Casting Mounting Bracket, this part carried Die Casting standard of Grade GB-CT4, the part has small wall thickness, meanwhile, the part have structure of big cavity, which usually easily cause problem of mold sticking, pull mark etc. The small wall thickness means the part probably happen to deform during production, which will cause actual application issue. What's more, the part surface area is big, but the thickness is small, in this situation, the far end from the location of injection, the melting aluminum will have risk of solid earlier than expected, it will cause short casting at the far end of the part, then while the part is cooled to indoor temperature, the part will have shrinkage porosity inside.
The part has requirement of surface finish of E-Coating, which has process of curing in hot thermal oven, the temperature usually be up to 170-200 degree, the porosity mentioned above will expand and get out from the part, result in pits and bubbles on the coating. So in the inspection work instruction, there is request that the QC inspector should fracture the part with hammer, then check the section particle with magnifying lens to see if there is problem of porosity on the section. The inspector also will make a record of the part weight, and control through weighing the part. All these action is to avoid batches rejected while e-coating.
The part is strong enough to proceed tumbling pre-treatment. The medium is stone, the part is flat and big, so the stones choose to use small ones. then the parts can be much more delicate.
Tumbling is a process which used for removing small flashes, make the parts more smooth, what's more, with this finish, the appearance will be much more consistency and beautiful.
Material: ADC-12
Cavity Number: 1
Process Technology: High pressure die casting, Cold Chamber
Product Dimensions: Customized
Casting General Tolerance: Grade GB-CT4
Surface Finish: Polishing, Vibratory Deburring
Flow Processes: Die casting, Degating, Deburring to remove the flash around the ejector pins, Polishing to remove the parting line, Tumbling to make the part appearance more consistency, High Precision CNC Lathe Machining, E-coating, Cleaning, Packaging, Shipping
Control Measure: Incoming Material Test, First Article inspection, Routing inspection, Final item inspection, and Outgoing quality control
Inspection Equipment: CMM, Caliper, Plug Gage, Screw Gauge
Application: Auto Parts
Certificate: ISO/TS16949:2009
Lead Time: 30-35 days
Trade Term: FOB Ningbo
