The Techmire Zinc Castings Machines

Posted on 01/27/2012 by admin

The Techmire Zinc Castings Machines. The Techmire zinc casting machine is a multiple-slide zinc die casting machine that is competent of manufacturing tiny, complex and intricate zinc castings at low cost. Having the capacity to manufacture tiny and precision zinc die castings, this makes Techmire zinc castings the global leader in the business of designing and fabricating multiple-slide zinc die casting machines.

Techmire is one of the leaders in the metalworking business today. It was created in the year 1983 in Montreal, Canada. You will now be able to locate Techmire machines in about more than thirty countries all over the world. Techmire zinc casting machines are explicitly 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 upgrade of the NT series. It has the newest technology that can handle higher capacity and severe pressures. End products of NXT series machines have improved surface finish and superior 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 biggest 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 alterations over of two-slide molds. This machine is calculated for single-cavity production of huge area or multiple-cavity production of tiny components. All NTX models offer better functions for different ranges of products.

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Miniature Type of Zinc Castings

Posted on 01/20/2012 by admin

Miniature Type of Zinc Castings. Zinc die casting is very fashionable among those who are in the die casting business. Zinc is very high-quality die casting material because of its characteristics. A lot of goods come from zinc die casting, including golf clubs, automotive parts and hardware parts. One type of zinc die casting is the miniature zinc casting procedure. Miniature 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 minature to 4 x 4 x 1 inch. Miniature zinc casting parts can endure 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 chief reason why producers use miniature zinc casting is because miniature zinc casting parts can endure faster cycling and can be made on multi-slide hot chamber zinc die casting machines. Miniature zinc die casting machines have shown this new technology as the best choice for highly advanced miniature zinc casting components. Although the technology of high-precision miniature zinc die casting procedure is very much the same, the hot chamber zinc die casting procedure of larger zinc part types, the previous 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 eliminating operations of pre-die casting. Automated production of zinc parts can create miniature zinc casting parts and units achieve a value of pennies per piece and with remarkable low tooling investments. Plus, the lifespan of your projects can last a longer time when you use miniature zinc and ZA-8 die casting tooling.

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The Process of Hot Chamber Zinc Castings

Posted on 01/13/2012 by admin

The Process of Hot Chamber Zinc Castings. In the hot chamber zinc casting procedure, slabs of zinc are melted inside a furnace with a temperature of approximately 700-800 degrees Fahrenheit. When liquefied, the zinc metal stays in the furnace. The gooseneck or shot sleeve is immersed in the hot chamber and the molten zinc is pushed 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 turns off and presses the two die halves together. The molten zinc metal is under high pressure until such time that the metal hardens (approximately less than a minute). Die halves then open up and the part or parts are removed and taken out either manually or automatically. Finishing works include trimming, tumble deburring, precision machining, painting, anodizing, chrome plating and assembly.

Hot chamber zinc casting machines are used primarily for zinc, lead, magnesium, copper and other low melting point alloys that do not easily corrode metal furnace pots, plungers and cylinders. The injection mechanism of a hot chamber zinc casing machine is saturated in the molten metal bath of a metal holding furnace. The furnace is attached to the machine by a metal feed system called gooseneck or shot sleeve. As the injection cylinder plunger travels upward, a port in the cylinder opens, allowing hot molten metal to penetrate into the cylinder. As the plunger moves downward, it closes the port and injects molten hot metal into the gooseneck and nozzle into the die cavity. When the metal has already hardened in the die cavity, the plunger is detached, the die opens and the casting is removed.

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Die Casting Zinc Alloys is the Best Way to Do It!

Posted on 01/06/2012 by admin

Die Casting Zinc Alloys is the Best Way to Do It! Numerous metal alloys are being utilized in the making of parts using the die casting techniques. In the midst of the very first metal alloys used in die casting of metal were tin and lead. Still, quite a few other metal alloys followed and came into use for die casting parts. Die casting zinc alloy is one of the favorite metal alloys to be used by consumers and manufactures alike. Zinc-based alloys are popular because they are among the simplest to die cast.

Die casting zinc alloys have high ductility and exceptional impact strength. This makes it probable to cast zinc alloys with thin walls. Zinc alloys also offer first-rate surface smoothness that makes plating and painting simple. Any high quality zinc metal should be used in the formulation of alloys to guarantee strength and dimensional firmness of the alloy.

Die casting zinc alloys involve two processes. The hot chamber method is the first method, which uses a vat of molten metal to solidify the metal in the die and the cold chamber method which uses different chambers to melt and hold melted metal before adding the zinc alloy and pushing them into the die casting die. The low melting point of zinc alloy gives it the litheness to be used both in the hot chamber and the cold chamber die casting machines. This makes die casting zinc alloys among the most money-making 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 usual zinc group. Zinc alloy die casting technology has transfigured from manufacturing plain designes to more intricate ones.

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Zinc Die Casting Tooling

Posted on 01/04/2012 by admin

Zinc Die Casting Tooling. Also known as zinc die casting dies or zinc die casting molds, zinc die casting tooling is essential equipment in the zinc die casting process. It comes in a mixture of shapes, sizes and design but it only has one purpose. Zinc die casting tooling permits the molten zinc to be shaped by applying pressure and heat.

Zinc die casting tooling consists of solid alloy steels. These alloy steel are typically separated into two sections and are used for the casting of the molten zinc alloy. The first part is the cover half. This half is more often than not the one that is fixed in a cast. The other one is the ejector die half. This other half is used for the removal of the hardened zinc alloy. It includes pins to force the two halves together until the zinc solidifies.

Over the years, engineers have produced zinc die casting tooling which consists not only of two sections as mold. Modern zinc die casting tooling may now hold slides and cores. This is because many zinc parts now need certain details such as holes and threads. With slides and cores, such requirement can be applied.

Aside from the pins, hydraulic pressure is applied to the halves to help with the solidification process. Pressure is applied for about 2-15 seconds depending on the size of the zinc die casting tooling. Lubrication is applied to make the disconnection of the zinc alloy from the casting easier. Added operations are executed in order to trim and polish the product.

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