Die Casting Blog for Cast-Parts Aluminum Die Cast Parts and Zinc Die Cast Parts manufacturing and cast parts production

June 5, 2009

Producing Aluminum Part Castings with Die Casting

Filed under: Aluminum Casting Parts — admin @ 1:38 am

Producing Aluminum Part Castings with Die Casting. Aluminum part castings can be made using a variety of casting processes, but the most extensively used among all these is the die casting process. Basically, aluminum die casting parts are made by injecting molten aluminum metal into metal molds or dies. Substantial pressure is needed; rapid injection plus rapid solidification are all combined in order to produce fine-grain, notably dense surface structures. These features lead to impressive wear and fatigue properties, making aluminum cast parts highly collectable. It is important that great care be exercised because incidents of shrinkage and air entrapment may occur, leading to porosity and damage in costs.

The die casting process or aluminum casting process is known to produce parts that are not easily heat-treated or welded due to entrapped gases. Thus, aluminum part castings made with die casting are typically not heat-treated but, on most occasions, are only given metallurgical as well as dimensional treatments for their necessary stabilization. To protect parts for certain special applications, manufacturers often use a form of vacuum for cavity venting. Moreover, special techniques are employed during production to deal with pressure-tight parts. Aluminum alloys that carry narrow freezing ranges are ideal.

Speaking of alloys, aluminum part castings of the best quality are those made from the family of aluminum-silicon-copper alloys. This family offers an excellent combination of strength, fluidity, corrosion resistance, freedom from hot shortness, and cost. Today, at least 85% of die castings made from aluminum alloys come from the said family, proving its ability to match every industrial business’ needs.

Cast Parts Die Casting Company
6918 Beck Avenue
North Hollywood, CA. 91605
818-982-9386 Phone * Sales@Cast-Parts.com.

June 1, 2009

The Advantages of Using Aluminum Cast Parts

Filed under: Aluminum Casting Parts — Tags: — admin @ 1:33 am

The Advantages of Using Aluminum Cast Parts. Most, if not all, businesses involved in the metalworking industry are currently using the aluminum casting process as part of their enterprise. Aluminum part castings, as opposed to products of other casting processes, offer more advantages. What these advantages are you’ll soon find out as you go on with this article.

Aluminum cast parts can be produced to meet the needs of businesses from all over the globe. The castings can be just a few hundred parts or come in a bigger bulk order such as a few hundred thousand. Manufacturers who need one part can also easily find aluminum casting companies that accommodate requests for the creation of different components that their respective businesses need for mass production. Aluminum cast parts are commonly used in factories, industrial sites, and the home.

One of the reasons why aluminum cast parts are so popular is because they are light; its density is, in fact, only a third of the density of steel. These aluminum cast parts are also resistant not only to weather, but also to common atmospheric gases and to a vast array of liquids. Aluminum is known to have high levels of elasticity (a definite plus feature for structures that are placed under shock loads) and tolerate the highest operating temperatures; its alloys can match or even beat the strength of steel. When aluminum is kept to low temperatures, it does not turn out to be brittle, unlike carbon steels that easily succumb. With high reflectivity, aluminum is also great for the decorative purposes. Finally, aluminum cast parts carry some of the most excellent EMI shielding properties.

Cast Parts Die Casting Company
6918 Beck Avenue
North Hollywood, CA. 91605
818-982-9386 Phone * Sales@Cast-Parts.com.

May 26, 2009

Cold Chamber and Hot Chamber Die Castings

Filed under: Aluminum Casting Parts,Cast Parts,Zinc Casting Parts — Tags: , — admin @ 4:47 pm

Cold Chamber and Hot Chamber Die Castings. Die casting process basically consists of injecting molten metal under high pressure into a mold or die. It is a versatile process of creating reusable steel molds. The molds are designed to produce complex shapes with high degree of accuracy and repeatability. There are two fundamental methods in die casting, hot chamber and cold chamber.

Hot chamber die castings are used for alloys with low melting pot that do not readily attack and erode metal pots, cylinders and plungers. Typical hot chamber makes zinc parts. While cold chamber die castings are used for alloys with high melting points, most common of which is aluminum.

Cold chamber die castings employ manual method in pouring molten metal. A hydraulic operated plunger will seal the cold chamber port. Then, it forces metal into the locked die at high pressure. The machine uses a separate melting furnace and weighs several tons.

The cold chamber die casting machine is located outside the furnace, as compared to hot chamber. Thus, it requires a means of moving the molten alloy from holding furnace to the cold chamber which is attached between the die casting machine front platen and the die. Transporting the molten metal is typically done with a ladle mechanism. Cycle times can range between 10 seconds for smaller machines and up to 2 minutes for larger ones.

Cold chamber die casting is more popular in the manufacturing industry because of its cheaper production cost and durability. It may be more complex than hot chamber die casting but its dependability is more advantageous. Aluminum die castings are made using the cold chamber process.

Cast Parts Die Casting Company
6918 Beck Avenue
North Hollywood, CA. 91605
818-982-9386 Phone * Sales@Cast-Parts.com.

May 20, 2009

Aluminum Die Casting and other Methods

Filed under: Aluminum Casting Parts,Cast Parts,Die Casting Company — admin @ 1:52 am

Aluminum Die Casting and other Methods. Aluminum die casting process is seemingly the more advantageous method nowadays when it comes to metal casting as compared to others like forging, screw machine production or stamping. This is due to the fact that die casting, particularly aluminum parts die casting, allows for innovative and modern techniques and ways that enable the delivery of all types of shapes, even extremely complex ones. This is very much unlike stamping. Aluminum die cast parts also offers many variation in terms of the measurement of each section’s thickness thereby ensuring the production of die cast parts that are precisely measured. One die cast may replace a number of stamping already, which only means that die casting process allows for a shorter assembly time. This means greater savings for both the manufacturer and the customer.

When compared to forging, aluminum die casting process gives a wider choice of shapes that has thinner walls as well as closer tolerance. The parts from die casting lower costs when it comes to finishing and it accommodates coring holes use. This is not possible with forging.

Lastly, when compared to screw machine production, aluminum die casting process makes possible hard to produce shapes with the use of bar or tubular stock. It is again more cost saving because it manages to observe tolerances without necessitating the use of tooling adjustments that are quite expensive. These facts only mean that die casting process compared to screw machine production does not only save cost but also cuts down waste and demand lesser operation.

Due to the above reasons, aluminum die casting manufacturing is becoming the choice of die casters.

Cast Parts Die Casting Company
6918 Beck Avenue
North Hollywood, CA. 91605
818-982-9386 Phone * Sales@Cast-Parts.com.

May 12, 2009

Factors Affecting the Aluminum Casting Process

Filed under: Aluminum Casting Parts,Cast Parts — Tags: — admin @ 4:41 pm

Factors Affecting the Aluminum Casting Process. Since Aluminum is one of the very few metals which can be used in almost any type of metal casting processes, the selection of the process to use is then based on two factors. The first factor being feasibility and cost and the other one is quality.

On the feasibility factor, aluminum alloy casting may be done by way of any of the available methods of metal casting. Aluminum casting process is easier to choose since this metal can be used in all processes. On some of these metal casting processes however, design feature as well as dimensions are the best determinants of the best method for casting. For instance, with metal molds weighing between 10 to 100 as much as the castings used when manufacturing, most huge cast products are done as sand casting instead of die casting or permanent mold casting. For smaller castings though, metal molds are used which ensures accuracy of dimensions.

The quality factor is also quite important in the aluminum casting process to be used. Quality in aluminum casting processes refers to the mechanical properties’ levels and the degree of soundness of the casting. The former refers to properties of ductility and strength and the latter refers to the absence of porosity, surface imperfections as well as cracking of the aluminum cast parts. It is however, especially with die casting, to completely eliminate porosity despite high cooling rates because air still tends to be trapped. This results into a small amount of porosity located at the center of the casting product.

Cast Parts Die Casting Company
6918 Beck Avenue
North Hollywood, CA. 91605
818-982-9386 Phone * Sales@Cast-Parts.com.

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