A; Pores: magnesium alloy wire is a kind of hole on the surface or inside of the product caused by gas string in the solidification process of liquid metal. Most of these bubbles are round. Small pores do not affect the mechanical properties of the product, but large particles of bubbles will greatly reduce the anti-impact performance of the product, the surface of the product will be loaded with water in the surface treatment, spray paint or electroplating, because of the water in the hole swelling to the bubble.

B: Shrinkage hole: the hole on the surface or inside of the product caused by the reduction of the volume of the liquid during the solidification process. Shrinkage holes are often angular in shape and dendritic in appearance. Shrinkage holes on or near the surface of the product will bring problems to the subsequent processing. Like pores, shrinkage holes can be used to string liquid into the surface treatment, spray painting or electroplating to produce bubbles.

C: Intergranular corrosion: corrosion within the boundary between metal grains. Intergranular corrosion starts on the surface of the product, and then extends along the boundary of the particles to the inside of the product. High temperature and humid environment will accelerate the harm of intergranular corrosion, which will make the product expand, deform, and even crack and break seriously. At the same time, the mechanical properties will deteriorate, and intergranular corrosion can also cause electroplating bubbles. The reason is that the impurity elements such as lead, cadmium and tin in the alloy exceed the standard.

D: Water marks: marks between two separate solidified areas on the same surface during the solidification process of magnesium alloy. The formation of water lines is because before the metal melt is fully filled with the mold cavity, after the metal melt is hardened due to contact with the mold wall, the metal melt flow contacts the solidified part from the other side of the true mold filling cavity, and the metal liquid flowing in after does not have enough energy to melt the solidified metal and solidify around it. In this way, a water stripe is formed between the two. The surface with more water marks can cause electroplating bubbles.

E: Slag inclusion: refers to the non-magnesium alloy particles into the magnesium alloy products. One of the most common inclusions in magnesium alloy die casting is the combination of iron and aluminum intermetallic compound or metal oxide, iron and aluminum hard and brittle intermetallic compound, therefore can cause problems for machining and polishing, make the product surface scratches, or fall off form magnesium compound hole, metal oxide if the product surface, due to its poor electrical conductivity, electric plating and product part of the binding force is not strong, It may cause electroplating foaming. The above sundries will float on the surface of alloy liquid, should be appropriate to reduce the insulation temperature.

F: adhesive die; This situation of magnesium alloy wire is caused by the adhesion of die-cast magnesium alloy on the surface of the die cavity. When the adhesion occurs, the magnesium alloy wire may be broken or deformed at the same time, and the thimble punch mark or the internal pinhole of the product may be caused by the dimensional error. Generally due to the mold temperature is too high or too low, the mold design is unreasonable, the top output is not balanced.