Have been measured in the past is dissolved in the melt of the amount of hydrogen by vacuum test method, Zhejiang aluminum recycling machine, which is the process of injecting the sample melted aluminum steel cup and let it solidify in a vacuum chamber. Observe the solidification process found during solidification bubble level change indicates the amount of hydrogen present. Use a sample slice after solidification can check the size of the formation of bubbles. Unfortunately, these methods are not accurate, but also by the melt in the presence of hydrogen gas bubble nucleation of oxide particles greatly affected. Test dissolved hydrogen better approach is to use a liquid extraction technology specially designed display of hydrogen equipment. In order to control the melting time reduce the oxidation of aluminum melt, suction and dissolved iron, aluminum should try to shorten the residence time of the melt in the furnace and rapid melting. From the onset of melting to pouring is completed, no more than four hours of sand casting, metal-casting no more than six hours, casting no more than eight hours. To speed up the melting process, should first join the moderate block, low melting point of recycled materials and aluminum-silicon master alloy, aluminum recycling machine, at the bottom of the crucible to form the pool as soon as possible, then add larger pieces of recycled materials and aluminum ingots, so that they can gradually expand slowly immersed in a bath of Hunan machine aluminum recycling, soon melted. After the main part of the molten charge, coupled with a higher melting point, a small number of intermediate alloy, heating, stirring to accelerate melting. Finally cool, pushed easily oxidized alloying elements, in order to reduce losses. Hebei machine aluminum recycling, scrap metal recycling Shengxin (online consultation), aluminum recycling machine Recycling Ltd from Linyi City Shengxin scrap metal available. Linyi City Shengxin scrap metal recycling Ltd. (shengxin.tz1288.com) Shandong Linyi, leading scrap metal, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Shengxin scrap metal recycling leadership with the staff warmly welcome all inquiries negotiations to create Shengxin scrap metal recycling better future.