Archive for the ‘Zinc Parts’ Category

Techmire Technology Zinc Die Castings. Ruling the metalworking industry because of its revolutionized approached to die casting, Techmire found its market in providing companies with equipment for all possible zinc die casting projects. It initially catered to its clients in its homeland in Montereal, Canada way back in 1973. It then expanded and was able to supply countries in neighboring areas. Techmire zinc castings are now being used in more than thirty countries all over the world. Inquiries and concerns are addressed by the company for technical assistance.

Techmire zinc castings employ the Techmire technology zinc die casting which is most beneficial to zinc die casting projects. Among the benefits that the Techmire technology offers are the following: low production cost, efficient operations and high-quality finish

Techmire zinc castings do not require much in terms of production. The materials needed as well as the labor are reduced. Techmire zinc die castings are also efficient. The cycle times are faster resulting to greater productivity.

Though the costs of production and the cycle times are faster, Techmire zinc castings do not sacrifice the quality of the output itself. The precision and quality are kept intact. Top quality outputs are expected each time.

The machines designed by Techmire are specially made to cater to zinc products. Two die casting equipments are NT Series and the NTX Series. The NT series are hot chamber zinc die casting machines that makes use of multiple slide technology. The NXT, on the other hand, is more advanced than NT. NT can hold a larger amount of molten zinc and can apply a higher amount of pressure.

Zinc Parts Types. Zinc has become a popular metal over the years. It is preferred by most industries as it offers the most advantages in terms of production and use. Zinc can be produced at a low cost but still come out with great quality and detail. It can also be produced regardless of how small or big the part is. It does not deteriorate easily when it comes to use.

Zinc parts are produced in three ways. These three ways are die casting, sand casting, and gravity-fed casting. The method commonly used is the die casting method. Such method involves pressure and heat. It has a low production cost and works well when producing small to medium sized parts.

The types of zinc parts produced are applied to many things. The most common place where types of zinc parts can be found is the household. Take a look around the bathroom faucets, door handles and door knobs. The power tools used in carpentry also make use of zinc. Zinc parts are used to make them it all functional. It can also be found in security equipment such as fire alarm housings and locks.

Types of zinc parts can also be found in the automotive industry. Some castings are made from zinc parts. Motorcycle grips and handles are also made from zinc. In some instances, certain types of zinc parts are used in aerospace.

Another area where types of zinc parts are used is in recreational equipment and tools. Gold clubs, golf putters and fishing lures are examples.

Why Zinc Parts Die Casting Process. The zinc die casting process gives way to the production of zinc die cast parts, which are made of zinc or zinc alloy tool steels. They each may have at least two sections, namely the cover half, also known as the fixed die half, and the ejector die half; these sections allow the easy removal of the castings from the machines. The ejector die half is what contains the passageways and inlets, all of which prod the molten metal to enter the cavity. Today, zinc die cast parts may also have movable cores, slides, and other sections in order to make various shapes. They also have locking pins that work to secure the two sections; openings for cooling and lubricating purposes; and ejector pins that are designed to help take out the cast parts.

During that part of the zinc parts die casting process wherein the machine closes, the two die sections are secured and held tightly together by the hydraulic pressure of the machine. The ejector die half and the fixed die half meet together and become locked in at a projected surface area called the die parting line. The clamping force of the die casting machine is governed by the total projected surface area of the part being cast and the hydraulic pressure required for the said machine to inject the zinc metal or zinc alloy into the cavity. These days, die casting machines have the ability to load 250 tons to 1,600 tons, setting the annual production capacity of companies employing the zinc die casting process in 400 sets-molds and at least 20,000 zinc die cast parts.

Zinc Die Casting Machine and How They Work. Die casting machines are of two basic types. One is the zinc hot chamber machines. This is also called the “gooseneck machines.” The other type is the cold chamber machines.

To feed the die, the zinc hot chamber die casting machines depend upon a pool of molten metal. At the start of cycle, the machine’s piston is drawn back and this gives way for the molten metal to fill the “goose neck.” Piston then forces zinc metal out of the gooseneck and sent to the die. This system has a fast cycling time and melting the metal in the casting machine is convenient. However, in this system, high-melting point metals cannot be utilized. Also aluminum cannot be used. Aluminum picks up iron. For this reason, hot chamber machines utilize zinc, tin and lead based alloys.

When the die casting alloy cannot be used in zinc hot chamber die casting machines, then the cold chamber machines are used instead. Among these alloys are magnesium, aluminum, copper and zinc alloys with a big composition of aluminum. The cold chamber system has a shower cycle time. This is due to the need to transfer molten metal from the furnace to the cold chamber machine.

Since cast irons cannot withstand high pressures, the dies and zinc die casting tools used in die casting are often made out of hardened tool steels. This makes dies very costly, and consequently high start up costs. There are also cores involved to cast features such as undercuts. Since they disintegrate due to high pressures, sand cores cannot be used in zinc die casting and die casting tooling. Metal cores are used instead. Wear and erosion limit a die’s life. This is strongly dependent on the molten zinc metal’s temperature.

Zinc Parts Die Casting Process. The process of die-casting is a common forming process for most metals. This is a casting method, which employs the use of dies for molding to be done. The casting method is employed when no other practical means of forming the metal is applicable. This is denoted when any of the following conditions are observed: when the desired product or shape is too large for other practical processes; when properties such as strength and quality are not very important considerations; and when the alloying metal incorporated has very low ductility making hot working or cold working hard to employ.

For practical and economical reasons, the zinc die casting process is considered in most industrial applications, specifically in the automobile industry, where zinc is widely used. In the zinc die casting process, the zinc metal is prepared for melting inside the furnace, where the melting temperature is achieved. The zinc has to be melted in such a way that it assumes the liquid state. The molten metal is then poured at a high velocity into a set of metal dies, which are maintained at a certain pressure. The metal is then allowed to cool until it completely solidifies within the die. When complete solidification is ensured, the dies are opened, and the molded zinc metal casting is removed.

The zinc die casting process is proven to be cost effective and economical over the other forming processes of metals, most especially when it requires the molding of large parts, and when strength is not of utmost consideration.