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October 27, 2022

Various Forms of Aluminum Castings in 2022

Various Forms of Aluminum Casting
Aluminum is considered versatile, first and foremost because it is one of the only metals around that can be cast using all sorts of casting processes. Die casting, sand casting, plaster casting, continuous casting, investment casting and permanent mold casting, in this case, all fall under aluminum casting. Squeeze casting, lost foam, and hot isostatic pressing are also some applications associated with the process.
When deciding on which process of aluminum casting to use, one must take into consideration the cost of each type and the quality of material that it will yield. Many aluminum alloy castings are made using the above processes, but the difference in results are great and many in number. For example, when die casting, air can be trapped in the casting and thus results in porosity. It cannot be eliminated, and aluminum die castings are thus lower in strength than mold castings.
Die casting is mostly catered towards aluminum alloys because it is considered the best material for the process, and it is easy to obtain. It is also the most popular aluminum casting process and is good for mass production of small, detailed parts. Millions of copies of alloys are produced to serve as parts for various machines and tools, seen everyday in one’s life. Many house tools are made using aluminum die casts, and many structures outside also require similarly small parts. Permanent mold casting, on the other hand, is better suited for much larger parts and thus yield in stronger material for much bigger mechanical structures.

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October 20, 2022

The Basics of Cold Chamber Die Castings in 2022

The Basics of Cold Chamber Die Castings
Cold chamber die castings are a process of die casting that use, instead of a hot chamber, a cold one. When starting the process, the molten metal is taken from the crucible and then inserted into a shot sleeve. Afterwards, a hydraulically operated plunger pushes the molten metal into the die. In order to minimize the shrinkage that usually occurs during silicification, as many material as possible is forced into the die cavity. Injection pressures usually have to reach over 10,000 psy or 70,000 KPa in order for the machine to function the way it should.
Cold chamber die castings are usually needed when the alloy is not eligible for use in hot-chamber machines for a variety of reasons. Such metals that require the cold chamber include aluminum, copper, zinc and magnesium alloys. Beforehand, the materials must be melted using a furnace. The problem with using cold chamber die castings is that the cycle time is a lot slower, since the molten metal needs to be transferred to the cold-chamber machine from the furnace.
When die casting, the dies needed are made out of steel because typical cast iron cannot take high pressures. This can serve as another setback to using the cold chamber, for the dies end up being very expensive, since steel is a costly metal. The dies can contain multiply cavities, or just one mold cavity, and there must be two dies – one for separation, and one for ejection of the final product. Many kinds of cold chamber machines are available with various features, but all of them function at maximum efficiency.

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    October 13, 2022

    The Basics of Die Casting Alloys in 2022

    The Basics of Die Casting Alloys
    Die-casting is very similar to permanent mold casting, only that the metal which is injected into the mold undergoes higher pressures which amount to 10-210Mpa (1,450-30,500) psi. Because of this, the surface of the die-cast is very good; the dimensions are also much more accurate at 0.2% of casting dimension.
    Die-casting may be done in two ways, either using a cold chamber process or by using a hot chamber process. Both differ in the time exposure of the melt which certain metals require either more or less. Cold chamber processes are usually used for aluminum and copper, also including its fellow die casting alloys. The metal is placed in the cold chamber for each shot and possesses less time exposure of the melt. Hot chamber processes usually are used for metals that have low melting points and high fluidity. This includes zinc, tin and lead. The die cavity is placed permanently in the molten metal. The inlet port of the pressurizing cylinder is uncovered as the plunger moves to its opening position. This allows a different charge of molten metal to fill the cavity.
    Aluminum, Zinc and Copper are the die casting alloys that are mostly used in die-casting for various reasons. Die-castings are limited from 20kg to a maximum that is dependent on the metal. Large castings usually have greater porosity problems because of the trapped air and the premature solidifying of the die-cast cavity. In essence, many things must be taken into account when performing die-casts in order to ensure the quality of the metals. Die casting alloys ensure good quality and a great finish.

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    October 11, 2022

    What is Aluminum Heat Sinks in 2022?

    Filed under: Aluminum Casting Parts — Editor @ 11:01 am

    What is Aluminum Heat Sinks

    Aluminum heat sinks draw heat from another source through thermal contact. These are mainly used in electronics and automobiles but there are other uses like:

    • Airplane parts
    • Circuit boards
    • Microwaves
    • Cell phones
    • Satellite components
    • Laser components
    • Motor housings
    • Automotive
    • Lighting parts

    Heat sinks absorb and dissipate heat from another object. It is a piece of molded aluminum or copper that usually sits directly on top of a feverish source or processor. In many cases, you won’t be able to see the processor unless you take out the heat sink first.

    Wherever there is a need for efficient dissipation of heat, there will surely be heat sinks installed. A major industry that uses heat sinks is refrigeration.

    The heat sinks manufactured these days come in different shapes and sizes. The typical heat sink though has long fins and thin protrusions for conducting the heat from the processor to the cooler environment inside the aluminum heat sink.

    Most of the heat sinks in the market these days are equipped with fans that blow the cool air to the fins to dissipate heat more effectively. These fans or blowers are usually placed on top of the fins or in the middle. Heat sinks like these usually cost around $25 or higher.

    Aluminum heat sinks are designed to require less machine processing. The fins can be manufactured simultaneously with the mounting holes. Typically, about 250 to 2500 heat sink parts can be produced per day.

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    California 91605, United States of America

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  • What Are Die Casting Parts?

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  • October 6, 2022

    Die Casting Companies in California 2022

    Filed under: Aluminum Casting Parts — Editor @ 4:27 pm

    With the closure of Pioneer Diecasters this year, I can find only 14 active die casting companies in Southern California. In 1994, when I founded Kinetic Die Casting Company, there were 76 die casting companies in California. Now there are only 14 companies in Southern California.

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    Sorted alphabetically, here is the current list of the competing die casting companies remaining in Southern California:
    1. Alloy Die Casting Company
    2. Aluminum Die Casting Company
    3. Ambritt Die Casting Company
    4. American Die Casting Company
    5. California Die Casting Company
    6. Cast-Rite Die Casting Company
    7. Die Cast of America Company
    8. Dynacast Company
    9. Hyatt Die Casting Company
    10. International Die Casting Company
    11. Kenwalt Die Casting Company
    12. Kinetic Die Casting Company
    13. Pacific Die Casting Company
    14. RSG Die Casting Company

    Kinetic Die Casting Company
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    Recently Closed Die Casting Companies:
    Bucy Die Casting Company Closed
    Commercial Die Casting Company
    Alloy Die Casting Company Sold
    Cox Die Casting Company Closed
    Rangers Die Casting Company Closed
    CEP Cast Engineered Products Closed
    Pioneer Diecasters Inc Closing

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