Blister on the Zn alloy sample surface after electroplating
Electroplating is a plating process to deposit a layer of Nickel on the Zn alloy surface. One of the common defects which frequently occur is blister.
The casting is easily broken and crack is found
A zinc alloy automotive accessory which was manufactured by die-casting method reported fracture after 3 months. Crack appeared on the surface.
Blister appears after 48 hours Salt Spray Test
The salt spray test is the standardized test method which has been extensively used to monitor the corrosion resistance of coated samples.
Hard particles on the casting surface after polishing
Grinding and polishing is one of the common techniques for decoration. If there are defects (porous, crack, inclusion…etc) exist within the products, those will expose onto the surface after extensive grinding and polishing.
Meteor Marks appear on the Al alloy casting surface after polishing
Grinding and polishing is a very common technique to obtain a mirror-like surface for Al alloy. In this case, a large number of meteor marks appear on the Aluminium alloy casting surface after polishing.
White unknown defect appears on the die casting surface
An unknown white defect appears on the Aluminium alloy die casting surface. It seriously affects the product appearance.
Pin holes are found on the electroplating surface
Electroplating is a plating process to deposit a layer of Nickel on the Zn alloy surface. One of the common defects which frequently occur is pin holes.



 
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