In addition to the plant's ingot analysis of main components and impurities, but still low accompany organizational checks and fracture. Practice has proved that the use of containing serious shrinkage, pinhole, and the bubble of molten aluminum, it is difficult to obtain dense castings, Shaanxi stainless steel recycling, or even cause the entire furnace, casting the entire batch of scrap. Some people in the study of the influence of Al-Si alloy ingot aluminum pinhole found no pinholes when casting molten pure sand test block, when added to low tissue and substandard aluminum-silicon alloy ingots, pinhole test block serious, Shanxi stainless steel recycling, and large grains. The reason for this is due to the genetic material. When the Al-Si based alloy and genetic improvement of surface increases as the content, silicon content of 7%, the genetic significantly. Continue to improve the content of the eutectic composition of silicon, stainless steel recycling, hereditary and slightly reduced. To solve the casting defects caused by hereditary charge, we must use high metallurgical quality of aluminum ingots, master alloys and other charge. Renewable resources can save a lot of energy, water and production materials, lower production costs, reduce environmental pollution. At the same time, many non-renewable mineral resources have characteristics, which determine the value of renewable resources, recycling has inestimable. [1] First, industrial development potential. According to incomplete statistics, China's annual renewable resources, recycled nearly 100 million tons, worth more than 2,000 billion yuan, of which more than 4,000 tons of scrap iron and steel, 30 million tons of waste paper, scrap metals more than 500 million tons of waste plastic 6000000 ton, more than 50 million waste tires Article other waste materials more than 1000 tons. In addition, in recent years, China's annual imports of all types of renewable resources are also more than 2,000 tons. If you include the mining industry since the resumption own waste, the value of China's annual recycling of renewable resources up to 40 billion yuan. Renewable resources is not absolute, is relative, conditional existence, humans have to be rational development and utilization and protection. Otherwise, our children and grandchildren will be resource crisis and the energy crisis. Renewable resources in order to save resources and the rational development and utilization of limited resources, the state actively support and encourage enterprises to adopt advanced technology, comprehensive development and utilization of renewable resources recycling cycle of economic projects, Hubei stainless steel recycling, especially for those scarce strategic resource reserves, such as tungsten, molybdenum, antimony, tin, cobalt, nickel, tantalum, niobium, bismuth, gold, silver, platinum, palladium, rhodium, rare earth, copper, aluminum, lead, zinc and other scrap metal resources, the development of a renewable resource project, equal to the same amount of metal the size of the development of a mine. Henan stainless steel recycling _ _ Sun Shine stainless steel recycling scrap metal recycling Recycling Ltd from Linyi City Shengxin scrap metal available. Linyi City Shengxin scrap metal recycling Ltd. (shengxin.tz1288.com) strong, credible, in Linyi, Shandong scrap metal industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shengxin scrap metal recycling into the brilliant and you work for a better future!