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

August 11, 2009

Zinc Alloy Die Casting Processes

Filed under: Cast Parts,Die Casting Company,Die Casting Tooling,Zinc Casting Parts — Tags: , , , , , , — admin @ 9:26 pm

Die Casting Processes with the Use of Zinc Alloy. Die casting is the process by which molten ferrous metal, e.g., zinc, magnesium, copper, lead, tin, aluminum, etc., are molded into cavities and placed under pressure to form. The method of die casting is ideal if the application needed is in large quantity and should be well-detailed and has fine quality. Zinc is a non-ferrous metal that is popularly used for die casting. This is due to the fact that zinc alloys have many characteristics that far exceed other metals. Zinc alloys have high strength and hardness, has high thermal and electrical conductivity, low cost, good finishing characteristics, outstanding fluidity, and excellent corrosion resistance among others.

In the zinc die casting process, two processes are involved, the hot chamber method and the cold chamber method. These two zinc die casting processes make use of various types of metal alloys during the production of parts in the zinc die casting process. The hot chamber method involves the process wherein a steel die is filled with a pool of molten metal, all the time maintaining pressure, until the metal hardens. The second process, the cold chamber method, involves the use of two separate chambers, first to melt, then to hold the melted zinc alloy before it is poured into a shot cylinder and afterwards inject them to the die casting die. Before, the metal alloys used in Zinc die casting processes are tin and lead. The zinc alloy however gained popularity and is now the first choice when it comes to die casting.

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Cast Parts Company 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 24, 2009

Aluminum Die Cast Parts Process

Filed under: Aluminum Cast Parts Alloys,Cast Parts — Tags: , , — admin @ 1:18 am

Aluminum Die Cast Parts Process. One of the aluminum casting processes is the die casting. Die casting involves the injection of a molten metal into steel molds or die which is under high pressure. Aluminum alloys are widely used in die casting processes, and die casting method on the other hand, is the mostly used casting method as compared to other aluminum cast parts processes. Two-thirds of the world’s aluminum alloys are produced through aluminum die cast part process. Die casting method is more appropriate for applications which require bulk production of parts with small to medium size. Die casting is also preferable in the production of parts which are more detailed and which require more refined surface quality and dimensional consistency.

Aluminum die casting process involves four steps. First, a lubricant is sprayed in the mold and then the mold is closed. The lubricant will help to control the temperature of the die and it will make the removal of the casting easier. Then, the molten metal will be injected into the mold under high pressure. The high-pressured injection is necessary to fill up the die quickly before the casting solidifies. The mold will be filled and will continuously be kept under pressure until the molten metal solidifies. Afterwards, the mold is opened and the cast part is removed.

Aluminum cast parts process are used in the production of aluminum alloys to be used in lawnmower housings, streetlamps housings, typewriter frames, dental equipment, frying skillets, cover plates, instrument cases, escalator parts, conveyor components, aircraft and marine hardware and lit tings and outboard motor parts.

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

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