Medium-temperature wax retreatment method

Abstract

The invention relates to a medium-temperature wax retreatment method. The method comprises the following steps that iron plates are welded into an uncovered iron box with the size of 150 cm*150 cm*50 cm; a steam pipeline is welded in the iron box, so that steam can enter the iron box; wax is conveyed into the iron box from wax treatment equipment, a proper amount of water is added, the steam is started, the water is heated through the steam, the water and the wax are boiled together in the iron box, the water and the wax are naturally cooled after boiling, the density of the wax is lower than that of the water so that the wax can float on the water, and the density of impurities is higher than that of the water so that the impurities can sink to the water bottom; and after the temperature of the wax is reduced, a wax block is formed, the wax is conveyed to the wax treatment equipment, and the wax is subjected to a standing process by the wax treatment equipment for later use. According to the medium-temperature wax retreatment method, the wax treated by the wax treatment equipment is treated again, the impurities in the wax are reduced, the wax is purer, waste products caused by the impurities in the wax are reduced, the shrinkage rate of the wax is stabilized, the production cost is reduced, and the yield of products with high dimensional precision requirements is increased to 90% from 64%.

Description

technical field [0001] The invention belongs to the technical field of casting wax treatment, and in particular relates to a medium temperature wax reprocessing method. Background technique [0002] When the company's precision casting workshop produces precision casting products, it is necessary to inject medium-temperature wax into the mold through the wax injection machine, use the cold water plate of the wax injection machine to cool the mold, and the wax liquid solidifies to form solid wax parts, and the wax parts are used to make shells. After the shell is dewaxed, it is cast to form a steel part. The medium-temperature wax melts from solid to liquid at 90°C and is injected into the mold. In the shell dewaxing stage, the wax parts in the shell are dewaxed in the dewaxing kettle. The dewaxing kettle uses high-pressure steam to dewax the solid. The wax melts into liquid wax, which flows into the wax processing equipment. There are a lot of impurities, air bubbles and m...

AI Technical Summary

Problems solved by technology

[0003] Wax parts processed by wax processing equipment can be used in conventional products, but it is slightly insufficient in the production of auto parts and other products that require high precision and high surface quality, because the impurities in the wax cannot be used during sewage discharge. The removal is thorough, resulting in dimensional accuracy not meeting the requirements and forming waste products