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

July 11, 2009

Techmire Zinc Castings

Filed under: Zinc Casting Parts — Tags: — admin @ 8:57 pm

The Techmire Zinc Castings Machines

The Techmire zinc die casting machine is a multiple-slide zinc die casting machine that is capable of producing small, complex and intricate zinc castings at minimum cost. Having the capacity to produce tiny and precision zinc die castings, zinc parts, this makes Techmire zinc castings the global leader in the industry of designing and fabricating multiple-slide zinc die casting machines.

Techmire is one of the leaders in the metalworking industry today. It was founded in the year 1983 in Montreal, Canada. You will now find Techmire machines in about more than thirty countries all over the world. Techmire zinc casting machines are specifically designed for zinc. Techmire has two sets of machines. They are the NT series and the NTX series. The NT series machine uses the multiple-slide technology, being fully automatic, hot chamber and has high precision. The NXT series is an improvement of the NT series. It has the latest technology that can handle higher capacity and extreme pressures. End products of NXT series machines have better surface finish and greater part density. The NT series have three models. They are the 22 NT, the 44 NT and the 66 NT. These three machines differ in nominal die size and shot weight.

Techmire’s largest die casting machine is the 88 NTX. It has a dry cycle speed of 2,100 cycles per hour and it has a quick die-changing capability allowing change over of two-slide molds. This machine is designed for single-cavity production of large area or multiple-cavity production of small components. All NTX models offer improved functions for different ranges of products.

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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.

June 10, 2009

Miniature Zinc Castings

Filed under: Zinc Casting Parts — Tags: , — admin @ 8:37 pm

Miniature Type of Zinc Die Castings

Zinc die casting is very popular among those who are in the die casting industry. Zinc is very good die casting material because of its properties. A lot of products come from zinc die casting, including golf clubs, automotive parts and hardware parts. One type of zinc die casting is the miniature zinc casting process. Die Casting parts zinc castings are made with the use of a 4-slide die casting mold. The weight of production processes range from a fraction of an ounce to as much as ¾ lbs with sizes from miniscule to 4 x 4 x 1 inch. Miniature zinc casting parts can undergo die casting in a complete range of zinc alloys like Zamak 2, Zamak 3, Zamak 5 and Zamak 7. ZA-8 zinc-aluminum alloys can also be an option. Zamak is another name for Zinc.

The main reason why manufacturers use miniature zinc casting is because miniature zinc die casting parts can undergo faster cycling and can be made on multi-slide hot chamber zinc die casting machines. Miniature zinc die casting machines have proven this new technology as the choice for highly sophisticated miniature zinc casting components. Although the technology of high-precision miniature zinc die casting process is very much alike, the hot chamber zinc die casting process of bigger zinc part types, the former is able to hold higher tolerances, usually with zero draft to “net shares” or “as cast” in faster cycles.

Zinc and ZA8 parts are developed by reducing the metal shrinkage and removing operations of pre-die casting. Automated production of zinc parts can make miniature zinc casting parts and units attain a value of pennies per piece and with tremendous low tooling investments. Plus, the lifespan of your projects can endure longer time when you use miniature zinc and ZA-8 die casting tooling.

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 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.

April 11, 2009

Zinc Alloys is the Best Way to Do It!

Filed under: Zinc Casting Parts — Tags: — admin @ 7:27 pm

Zinc Alloys is the Best Way to Do It!

Several metal alloys are being used in the manufacturing of parts using the die casting process. Among the very first metal alloys used in die casting of metal were tin and lead. However, several other metal alloys followed and came into use for die casting parts. Die casting zinc alloy #3 is one of the most popular zinc metal alloys. Zinc-based alloys are popular because they are among the easiest to die cast.

Die casting zinc alloy #3 and Die casting zinc alloy #5 have high ductility and excellent impact strength. This makes it possible to cast zinc alloys with thin walls. Zinc alloys also offer excellent surface smoothness that makes plating and painting easier. Any high quality zinc metal should be used in the formulation of alloys to ensure strength and dimensional stability of the alloy.

Zinc Die casting alloys involve two processes. The hot chamber method is the first method, which uses a pool of molten metal to harden the metal in the die and the cold chamber method which uses separate chambers to melt and hold melted metal before adding the zinc alloy and injecting them into the die casting die. The low melting point of zinc alloy gives it the flexibility to be used both in the hot chamber and the cold chamber die casting machines. This makes die casting zinc alloys among the most saleable in the market today, especially in the automotive industry.

Zinc alloy is also called commercially as Zamak alloy. Zamak is an acronym for zinc, aluminum, magnesium and copper, the four alloys in the conventional zinc group. Zinc alloy die casting technology has revolutionized from manufacturing simple shapes to more complex ones.

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

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