High pressure die casting is a versatile manufacturing process in which molten metal is injected with a die casting machine using considerable pressure into a steel mold or die to form products. These molds, or dies, can be used to produce complex shapes with a high level of accuracy and repeatability. Die castings are among the highest volume, mass-produced items manufactured by the metalworking industry. They are used in numerous applications for industries such as automotive, locomotive, agricultural, marine, plumbing, lighting, and many more.
There are several alloys that can be used: zinc, aluminum, magnesium, brass, and copper. Every alloy offers a unique advantage. Let’s take a look at a few: Aluminum is one of the commonly used alloys because it is light-weight, very strong, corrosion-resistant, and it easily polished or painted for an appealing finish. Zinc offers high impact strength and is the easiest to cast. Brass is heat-resistant, highly corrosion-resistant and provides excellent electrical conductivity.
High pressure die casting is an efficient, economical process that offers a broader range of shapes within closer tolerances than many other metal manufacturing techniques. They can be produced with smooth or textured surfaces, and they’re easily plated or finished with a minimum of surface preparation. They can even be designed to complement the look of a surrounding part.
There are several more benefits to choosing die casting over other manufacturing processes. High pressure die castings are heat resistant, highly durable, and provide close tolerances. They reduce or eliminate secondary machining operations making them cost efficient. High pressure die casting is ideal for anyone who needs a large quantity of intricate metal shapes that are highly durable.
The majority of failures in die casting and metal plating dies made of steel is heat checking. This process caused by the constant heating and cooling of dies creates stress in the steel which affects its ability to perform. In addition, ongoing thermal shocks contribute to the failures of the die cast materials. Dies are pretreated with this product are stronger and more resistant to heat checking. Our product can also reverse the affects of damage that has already been. This processes with not eliminate the heat checks, but it will decrease the amount of reoccurring heat checks.
To create a high quality casting product, the die casting and metal plating process needs to remove the heat that is created by the molten metal. This will create a solid casting product. To accomplish this, the heat energy needs to be transmitted to the die steel. The heat needs to pass through the steel surface that heats it up very quickly. Next, the surface will begin to cool down. When this process is repeated over and over again, heat checks will begin to appear. These checks will be hard to see at first, but upon close inspection can be located where the molten steel is poured into the die cavity. The checks will grow in size and get deeper into the surface. The number of checks will expand grown into each other. This process shortens the life of the dies and affects the end casting products and it eventually turns into a high cost expense for your business.
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