Die casting zinc beautiful. From forcing molten metal zinc under high pressure into mold cavities, products from and for zinc die casting are formed. Die casting zinc, as we know it, is one fine way to produce small to medium sized zinc parts that has good and intricate details, delicately formed surfaces, and that has consistency in dimensions making it as a very welcome addition in the production industry.
Now, some of you may wonder what materials are used in this very clever process. With die casting, raw materials and elements (or non-ferrous metals as they are properly called) like zinc, copper, aluminum, magnesium, lead, and tin based alloys are used. These non-ferrous metals, as their collective name suggests, contains no trace of iron. And although these are the materials that are commonly used, ferrous materials (or materials that has traces of iron) can also be used in this process.
And the process itself, you may ask? Well, die casting zinc begins with closing the mold after being sprayed with a lubricant. By spraying lubricant on the mold, the temperature of the die can easily be controlled and the removing the zinc casting later on will be much easier. After this first step, using a hot chamber zinc die casting machine, molten zinc metal that is under high pressure of around 10—175 MPa (1,500—25,000 psi) is shot into the die. This amount of pressure is kept once the die is filled and until it is totally solidified. Filling the die by using a high-pressure injection is done so that the whole cavity would be filled before zinc parts of the entire zinc casting hardens. Moreover, using a high-pressure injection helps makers avoid irregularities in form even if there are parts of the zinc casting that are not easy to fill due to its irregular shape.
And with a Hot Chamber Zinc process as long as this one, one can be sure that the results will be beautiful die casting zinc parts.
