After the metal liquid fills the cavity, the time required under the action of pressurization and specific pressure until the internal gate is completely set is called holding time.The effect of holding time is to crystallize the solidifying liquid metal under pressure, thus obtaining a die casting Read More »

The casting hot spot refers to the isolated area where the metal liquid cools and solidifies at some local locations during solidification in the mold cavity.The formation of hot spots usually depends mainly on the casting structure and wall thickness distribution (internal causes), and the local he Read More »

There are four flow modes when the metal liquid fills the mold cavity: jet flow, pressure flow, re-jet flow, and supplementary metal flow.Injection flow: In the initial stage of die casting, the molten metal passes through the inner sprue at a high speed, driven by the injection punch, and is shot s Read More »

Mold cooling methods are mainly air cooling and water cooling two kinds.Air cooling characteristics: The air cooling mainly comes from compressed air;There is no need to set the cooling device in the mold, and the structure is simple;It can evenly blow the paint inside the mold cavity, accelerate an Read More »

Mold retention time: the time from the end of the hold-down stage to the release of the die casting. The purpose of this time is to ensure that the casting is fully solidified, cooled and has a certain strength in the die, so that the die casting will not be deformed or cracked during the release an Read More »

The slow injection velocity collects the first stage injection velocity in the three-stage injection system. After the metal liquid is poured into the pressure chamber, the filling degree of the metal liquid in the chamber is generally controlled at 50%-80%, and the rest space is filled with air. Th Read More »

Aluminum alloy die casting has some advantages that other castings can not compare, such as good looks, light weight, corrosion resistance, so that it is widely favored by users. But aluminum alloy die casting is prone to porosity and impurities, so how to solve this problem? Firstly let’s see how d Read More »

Many customers think it is more cost-efficient, faster and more efficient to use a large-tonnage die-casting machine to die-cast small zinc alloy parts. In fact, this view is wrong!Choose a right die-casting machine with suitable tonnage for a set of zinc alloy die casting parts is extremely necessa Read More »