Aluminum strontium alloy as modifier of aluminum alloy, widely used in casting aluminum wheels of automobiles, motorcycles.

   Aluminum-Sr alloy compared with Strontium salts has obvious advantages, so use it instead of salt has become the trend of industrialization overseas. In China, Beijing Geological Instrument Factory, and other several non-ferrous casting manufacturers, using strontium aluminum alloy which containing 5% strontium as a modifier in ZL101-111, ZL401, ZL702-A and other brands, which achieved satisfactory results, Producing a large number of various types of castings with wear-resistance, air tightness and high strength requirements. such as pistons, pump, airtight container, and structural parts. The quality of castings was improved after using this new technology; the defective index is down from 5 percent to 2 percent. In particular, pinhole rejected-production which people are usually worried about is rarely happen even in this southern city of Guilin, has been widely used in production.