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Home>News>Pay attention to details when producing alloy castings
March 19, 2024
Pay attention to details when producing alloy castings
In recent years, it can be said that there are more and more Aluminum Alloy Die casting manufacturers. In the era of rapid technological development, mechanical equipment is also constantly being updated. The supply of mechanical castings is increasingly in short supply, so there are In recent years, it can be said that there are more and more Die Casting Part manufacturers. In the era of rapid technological development, mechanical equipment is also constantly being updated. The supply of mechanical castings is increasingly in short supply, so there are The main defects are protruding vesicles on the surface of the mold. After polishing or machining to expose fuel injection or after plating. The cause of blistering defects in castings is that pores are mainly caused by pores and shrinkage mechanisms. The pores are often circular and shrink irregularly. The cause of pores is that during the filling and solidification process of molten metal, the inner surface or inner pores of the casting are caused by the intrusion of volatile gases into the coating. During solidification, the gas content of the alloy liquid is too high. When the gas inside the cavity is emitted by the paint and solidified by the alloy, the pores formed in the casting can remain when the mold is depleted. Zinc alloy die castings are widely used in various aspects such as decoration, furniture accessories, architectural decoration, bathroom accessories, lighting accessories, toys, tie clips, belt buckles, metal buckles, and high requirements on the surface quality of castings require a good surface treatment. A common defect in Zinc Alloy Die Casting is surface blistering. The reason for shrinkage is that during the solidification process of molten metal, the liquid shrinks due to the reduction in volume or final solidification position. The uneven thickness of the casting or the local overheating of the casting causes slow solidification of certain parts and volume shrinkage and surface depression. Due to the surface treatment of pores and shrinkage castings, the holes can enter the water for baking and post plating baking. The quality of the die casting depends on the precision of the processing equipment. The gas in the hole will expand when heated; or the water in the hole will change the volume of steam and expand, thus Causes blistering on the casting surface.
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