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

June 3, 2009

The Basics of Cold Chamber Die Castings

Filed under: Cast Parts — admin @ 4:55 pm

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. Afterward, a hydraulically operated plunger pushes the molten metal into the die. In order to minimize the shrinkage that usually occurs during solidification, 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.

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

May 28, 2009

Alloys for Aluminum Part Castings

Filed under: Aluminum Cast Parts Alloys,Cast Parts — Tags: — admin @ 5:25 pm

Alloys for Aluminum Part Castings. One of the mechanisms that fuel the metalworking industry and all the businesses that belong to it is the casting process, also known as the die casting process. This process has made a number of industrial innovations come to life, making it a must in today’s highly industrialized world. There are different die casting processes and, in the same way, there are a variety of materials that can be used for die casting. One of these materials is aluminum, specifically its alloys, giving way to the production of aluminum part castings and the popularity of the aluminum casting process.

Compared to any other alloys from or of any other base metal out there, aluminum alloys are used in the die casting process more widely or extensively. This is because of several reasons. For one, die cast parts made of aluminum are considerably lighter in weight. They also carry very high levels of tolerances when it comes to operating temperature as opposed to other die cast parts made from standard die casting alloys. Aluminum part castings are known to display noteworthy rigidity and strength, convincing die casting companies to switch from the material they are currently using to aluminum alloys. Moreover, aluminum cast parts also have good corrosion resistance, as well as commendable heat dissipation properties.

Alloys used for aluminum part castings are produced and used for a wide array of businesses, such as those that cater to automotive, medical equipment, kitchen implements, small to medium engine housings, streetlamp housings, and even aircraft hardware, to name just a few.

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 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.

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.

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