The Cold Chamber Die Castings in 2021

Posted on 07/07/2021 by admin

The Cold Chamber Die Casting. Metals in various sizes and shapes are produced through many casting procedures and one of them is die casting. Zinc Die casting produces durable alloy in different shapes and can be produced in many identical pieces. The procedure requires machines with molds or dies where the molten alloy is placed and solidified. The alloys usually used in die casting are aluminum, zinc, copper, magnesium, tin, and lead. They have different metallurgical properties and they can be used depending on their properties.
There are two methods in die casting: hot-chamber and cold-chamber die casting. Metals with low melting point can be placed in hot chamber machines while those with high melting point can be placed in cold-chamber machines. Also, the difference between the two is the main process in which the alloys are produced.
In cold chamber die casting, the alloys are melted in a furnace separated from the machine. When the alloys are already melted, they are transferred to the dies through the use of hydraulic or mechanical piston. In the cold die chamber, the alloys are quickly hardened. One of the disadvantages of using the cold chamber die casting is the longer time needed for the alloys to be formed because of the additional time for transferring the alloys to the chamber. A ladle is used to transport the molten metal from the furnace to the cold chamber. The ladle can be manual or automatic in terms of operation.
Examples of alloys that can be used in cold chamber are aluminum, magnesium, and copper.

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What is Magnesium in 2021?

Posted on 06/30/2021 by admin

What is Magnesium? It is usually depicted as a metal, second only to steel and aluminum in popularity. Aside from that, people don’t know much more about it, even though it has so many uses. So, what is magnesium?

Magnesium, with the chemical symbol Mg, is the ninth most abundant element in the universe by mass, and eleventh within the human body. Its many applications include making components for electronic devices, photoengraving plates for printing, paper manufacturing, and fireproofing wood. Ever heard of mag wheels? Those shiny high-grade car wheels which guys usually drool over in auto shops? They’re not called that because they’re always featured in car magazines – their name comes from what they’re made out of, which is magnesium.

One of the current major uses of the element is in die casting zinc. Because of its light weight, magnesium is one of the most commonly used metals for this purpose, as compared to zinc alloy and aluminum.

A lot of compounds can be made with magnesium, and these compounds, along with magnesium in its purest form, are used over a wide variety of industries. What is magnesium? It is a very important and useful element – it’s not just a third place metal behind steel and aluminum.

zinc Lock Parts lock components
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What Die Casting is All About in 2021

Posted on 06/23/2021 by admin

What Die Casting is All About. Die casting is a process where molten metal under high pressure is forced into mold cavities, also called die casting molds, and these are then machined into reusable steel molds called dies or die cast tooling. Most of these die castings tools are produced from nonferrous metals like aluminum, lead, magnesium, zinc, copper and tin-based alloys. Die castings from ferrous metals are also possible.

Recently, some die castings have been replaced by injection-molded plastic parts. Reason is they are cheaper and lighter. Plastic is a practical alternative if only little strength is needed and hardness is not required.

When casting does not require porosity, then the pore-free casting process is preferred. This is similar to the standard process except that before each shot, oxygen is injected into the die. This results in the formation of small dispersed oxides when the molten metal fills the dies. This almost removes gas porosity. It also adds strength. This process uses aluminum, zinc and lead alloys.

Zinc die casting process forces molten zinc through a heated manifold and then through heated mini-nozzles, which then lead into the molding cavity. This process, called the heated-manifold direct-injection die casting or runner less die casting, has lower cost per part. This is because of the reduction of scrap and energy conservation. Better surface quality is achieved through slower coaling cycles.

The main die casting alloys are copper, lead, zinc, magnesium, aluminum, tin, while specific die casting alloys are Zinc Aluminum, AA380, AA384, AA386, AA390, ZAMAK and AZ91D Magnesium.

Due to its high ductility and impact strength, Zinc is the easiest alloy to cast. It is easily plated and economical for small parts. It also promotes long die life. Aluminum is light and good corrosion resistant. It has good mechanical properties and high thermal and electrical conductivity. Magnesium is the easiest alloy to machine while copper has the highest mechanical properties of alloy die cast. Lead and tin have high density.

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Characteristics of Die Casting Zinc Alloys in 2021

Posted on 06/11/2021 by admin

Characteristics of Die Casting Zinc Alloys

Different types of zinc alloys are commonly produced by the Zinc Die Casting process. Zinc alloys are applicable for broad variety of products due to excellent impact strength and high flexibility. Die Casting Zinc Alloys may be cast with thin walls and outstanding surface sleekness, which makes the preparation for painting and plating somewhat simple. In the generation of alloys, it is important that you use high-purity zinc metals. The dimensional stability and lasting integrity of the alloy’s toughness is guaranteed through low limits on cadmium, lead and tin.

These are the different characteristics of Die Casting Zinc Alloys:

1. Excellent corrosion resistance
2. 100% recyclable
3. High-quality finishing attributes
4. Has the capability to cold form that eases joining
5. Raw materials are inexpensive
6. High thermal and electrical conductivity

Another characteristic of Die Casting Zinc Alloys is its low melting point. This characteristic makes the zinc alloy sufficiently flexible in order to use it for cold chamber casting equipment and hot chamber casting equipment.

Die Casting Zinc Alloys rigidity and high strength makes it the perfect substitute to fabricated, stamped, pressed and machined items. The complicated net-formed zinc casings with exact thin walls provide exceptional shielding properties and electrical performance to electronic connectors, chassis, shields as well as frames for hand-held telecom and computing equipment. The small and complex elements of Die Casting Zinc Alloys are used in several electronics and consumer electrical applications such as shutter devices in cameras, heat sinks, precision interlocking gears, hard disk drives, portable computers and mobile phone antennas.

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Porosity in Zinc Die Casting Parts in 2021

Posted on 06/09/2021 by admin

Porosity in die casting parts. Die casting porosity is an unwanted result brought about by poor handling and method. It would be unclear until you know the meaning of die casting. Die casting is a technique or process of pushing an ample amount of molten material such as metal, plastic or resin into a container then pushing it with great force in a mold until it cools down and takes its form. Usually, metals used for die casting are non-Ferrous metals, or those containing no Iron, because Iron promotes oxygenation and rusting of the metal. The most ordinary metals used are magnesium, copper, zinc die casting alloy, lead and aluminum. Porosity in die casting parts is the presence of large bubbles of air inside the molded material, which makes it easier to break up. Porous die casted materials are commonly regarded to as something with low class and low quality.

Is there a way to reduce the occurrences of porosity in Zinc die casting parts? Fortunately, there are a few simple ways to be able to reduce and even eliminate the chances of having porous results in die casting. First of all, you need to conduct check-ups on your machines on a regular basis. Crevices and chinks on the surfaces of your molds allow air to seep through the machine, causing air bubbles within the plastic and metals. You can easily fix this problem by sealing it up with a sealant and cleaning it. Another thing you need to consider is to replace your molten materials with ones which have higher quality. The less cohesive and pure your metals and resins are, the more likely will it cause air bubbles inside.

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