Szárazöntéses

Szárazöntéses is a Hungarian term that translates to "dry casting" or "dry pouring" in English. It refers to a technique primarily used in metal casting where no external lubricant or release agent is applied to the mold during the pouring process. This is in contrast to wet casting, where a release agent, often water-based, is used to prevent the molten metal from adhering to the mold material.

The szárazöntéses method typically involves molds made of materials that have inherent non-stick properties or can withstand high temperatures without significant degradation. Common mold materials for this technique include certain types of sand molds, graphite molds, or specialized ceramic molds. The success of szárazöntéses relies heavily on the precise control of mold temperature and the composition of the molten metal to ensure a clean release after solidification.

This technique can offer advantages such as avoiding potential defects caused by moisture or chemical reactions from lubricants, and it can also simplify the post-casting cleaning process. However, it requires careful mold preparation and a thorough understanding of the materials involved to prevent the casting from sticking to the mold. Szárazöntéses is employed in various casting applications, particularly where high purity of the cast product is desired or where traditional release agents might contaminate the metal. The specific application often dictates the suitability of the dry casting approach.