Evaluating zinc hardware is no walk in the park. Multiple-slide zinc die-casting machines are perfectly capable of producing complex zinc components with precision. This extends to the planning, designs and the building of die casting dies, the selection of various auxiliary equipment and personnel training services.
The die-casting process, whether it uses zinc alloys or other materials for casting is generally characterized by applying molten metal into mold cavities via high pressure (though zinc can be readily cast with just minimum melting point, much better compared to its other metal alloy counterparts). Depending on the metal type used in the casting process, hot or cold chamber machines will be used in the operation. Both are distinguished by the amount of clamping force that they are able to apply separately. Typical ratings are recorded in between 4,000 and 400 ST.
Casting equipment using zinc and metal dies exhibits huge capital costs; these tend to limit high volume productions. The production of parts through zinc die-casting is somewhat simple enough in terms of the operation, which is divided in four types as this keeps incremental costs per item at a low. It is best suited in large quantity manufacture of small and medium-sized diecastings because of the significant savings that will be gained out of it. This is probably the main reason why die-casting is more feasible these days compared to other casting processes.
Hot-chamber die casting machines are also referred to as “gooseneck machines.” Its operation relies on molten metal. During the beginning cycles, the machine’s cylinder will be retracted, allowing molten zinc to fill it all up. The hydraulically powered piston will force the zinc out of the gooseneck and into the die. What this particular machine does best is the fast cycle times reported at an average of fifteen cycles in a minute, which makes for an efficient and convenient melting of zinc in the die casting machine (see www.diecastingzinc.com/hot_chamber.html).
While the advantages about the machine brings efficiency and potential savings at whole new levels, its drawbacks are among the issues worth noting. One particular disadvantage of the hot chamber system is that it cannot accommodate metals with high-melting points. Zinc however is an exception, and this is where zinc hardware in die-casting parts proves more feasible compared to its counterparts in the industry.
Cold chamber machines on the other hand are called into action when the casting alloys used cannot be accommodated in hot chamber machines. Such metal alloys include zinc alloys with a great part of aluminum, aluminum itself, copper and magnesium. The casting process commence with molten metal created in separate furnaces. Precise amounts of molten metal are transported directly to the cold chamber machine, and will be injected into the slot chambers (injection cylinders), which by the way, should not be heated. The shot will be driven all the way into the die via mechanical or hydraulic pistons.
Among the drawbacks of the system is a much slower cycle time, the result of the difficulty when transporting molten zinc alloy from the separate furnace and into the cold chamber machine. This alone is one complicated task. Given the right conditions, zinc hardware operations are a great opportunity for building operations during operations.
Die Casting Zinc is a Zinc Die Casting Company who produces zinc metal die casting parts. Look at this website page for more details: www.diecastingzinc.com/metal_parts.html. Contact us at 800-524-8083 or email us at sales@diecastingzinc.com
