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

May 17, 2009

Hot Chamber And Cold Chamber Die Casting

Filed under: Cast Parts — Tags: — admin @ 4:29 pm

Hot Chamber And Cold Chamber Die Casting. In the process of die casting, molten metal in injected forcibly into mold cavities, or “dies”, under very high pressure. Because this method of molding metal is extremely versatile, die casting is widely used as a method for forming metals into specific shapes. While it may use a similar process as mold casting, die casting uses pressures of up to 10 to 210mpa to inject metal into the die. The resulting material exhibits uniformity of parts, dimensional accuracy, and smooth surface finishes.

There are many different materials used in die casting, such as copper, zinc, tin, magnesium, and lead. However, aluminum die casting is the most widely used compared to these other materials as the metal is more malleable, and is good for creating large size cold chamber die castings, to die castings composed of tiny and complex parts.

There are two processes used for die casting, namely the cold chamber which produces cold chamber die castings, and the hot chamber process. To produce cold chamber die castings, a cold cylinder is injected with molten metal. With less time exposure given for the metal to be propelled into the mold, cold chamber processing is more often used for metals that easily meld with iron at very high heat. The cold chamber process is also used for metals that have high melting points.

On the other hand, in the hot chamber zinc die casting process, the pressure found in the die cavity connected to it becomes permanently a part of the molten material. A plunger is propelled toward an area that is non-pressurized, uncovering the inlet port appended to the pressure cylinder.

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

May 16, 2009

Aluminum Cast Parts Preferred

Filed under: Cast Parts — Tags: — admin @ 4:46 pm

Aluminum Cast Parts Preferred. Aluminum cast parts are now the preferred end products from metal casting particularly die casting. Die casting is a manufacturing process by which molten metal is forced into mold cavities done under extremely high pressure. These mold cavities are actually machine into dies. Most of these die castings are made from metals like copper, zinc, lead, tin and aluminum, which is showing some momentum and are being preferred by many die casters.

One simple reason for this is the fact that aluminum still is one of earth’s most abundant metal. It is lightweight, malleable and flexible but strong and corrosion resistant. Not only that, it is recyclable, making it environment friendly. Currently, aluminum cast parts process is used to produce a lot of aluminum part castings found in automobiles and many auto parts. In North America alone, one of the largest market for aluminum cast parts are from its transportation industry. It is in fact the 2nd most used component in car and truck production. This is because aluminum may reduce gas consumption due to aluminum made vehicles being lighter in weight. Vehicles made of steel are 1/3 heavier than if it is made of aluminum. With the use of processes like forging, rolling and casting, aluminum may be processed to become longer and even thinner. The most used forms of aluminum in the market are foils, sheets and plates.

Given these advantages in using aluminum than other metals, it is expected to be the metal of choice in many more products. Truly, aluminum is expected to gain more popularity in the coming days.

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

May 12, 2009

The Process of Hot Chamber Zinc Castings

Filed under: Zinc Cast Parts Alloys,Zinc Casting Parts — Tags: — admin @ 8:16 pm

In the hot chamber zinc die casting process, slabs of zinc are liquefied inside a furnace with a temperature of approximately 700-800 degrees Fahrenheit. When melted, the zinc metal stays in the furnace. The gooseneck or shot sleeve is immersed in the hot chamber and the molten zinc is injected into the two die halves being held together by the machine. The two halves of the die casting molds are mounted on the die casting machine and the machine shuts off and clamps the two die halves together. The molten zinc metal is under high pressure until such time that the metal solidifies (approximately less than a minute). Die halves then open up and the part or parts are ejected and taken out either manually or automatically. Finishing works include trimming, tumble deburring, precision machining, painting, anodizing, chrome plating and assembly.

Hot chamber zinc die casting machines are used mainly for zinc, lead, magnesium, copper and other low melting point alloys that do not easily erode metal furnace pots, plungers and cylinders. The injection mechanism of a hot chamber zinc casting machine is soaked in the molten metal bath of a metal holding furnace. The furnace is connected to the machine by a metal feed system called gooseneck or shot sleeve. As the injection cylinder plunger goes up, a port in the cylinder opens, permitting hot molten metal to enter into the cylinder. As the plunger moves downward, it shuts the port and forces molten hot metal into the gooseneck and nozzle into the die cavity. When the metal has already solidified in the die cavity, the plunger is removed, the die opens and the casting is ejected.

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

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.

May 8, 2009

Aluminum Parts for Die Cast Parts

Filed under: Aluminum Cast Parts Alloys,Aluminum Casting Parts,Cast Parts — Tags: — admin @ 1:35 am

Aluminum Parts for Die Cast Parts. Die casting entities commonly have precision metal parts done in good quality. The parts mentioned are made for modern industrial uses by various companies. Examples of the die cast parts are the parts in computers, phones, industrial machines and even the simple ones in toys, kitchen metal parts or the ones used for plumbing. Many of these are aluminum die casting parts. These aluminum part castings are actually in almost every important thing used in our daily lives. We are just not aware how they were produced or manufactured. Only a few know how these metal cast parts are made or what processes were involved to produce them.

There are many aluminum casting processes that can be done since aluminum is quite a great metal for casting processes. In fact, it can be used in almost all, if not all, metal casting processes. One of these processes is through die casting.

Aluminum is definitely one of the main die cast alloy. The others are copper, zinc, tin, lead and magnesium. Aluminum alloy is advantageous in die casting due to the fact that it is lightweight and it has high dimensional stability when it comes to complex shapes as well as thin walls. It also has better corrosion resistance compared to others and has good mechanical properties. Aluminum also has high electrical and thermal conductivity and it manages to retain strength even at high temperatures. Aluminum casting’s maximum weight is about 32 kilograms or 70 pounds. Aluminum is indeed a metal of choice for casting.

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

Aluminum Parts for Die Cast Parts

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