Aluminum alloy impeller castings introduction
Lingtong Casting adopt world-class standard such as ASTM, AISI, GB, DIN, JIS in our casting design and manufacturing. All kinds of mechanical parts modern design superior hot sale Aluminum alloy impeller castings.We implement ISO9001 quality system in our daily management and manufacturing. Our products are exported to Japan, Holland, Australia and America, the quality of our castings are Widely appreciated in China and abroad market. The frames we produce for Japan WKM, are 100% Magnetic particle inspected with zero defect. Holland Stertil B.V., the world's large car lifting machine manufacturer, have cooperated with us for around 10 years, on main force components of lifting machine.
Technical key points
u Take effective measures to reduce the casting temperature to eliminate crack defects, at the same time reducing the temperature drop of molten steel to ensure the filling capacity of steel. Main technical measures: one is to directly reduce the casting temperature, the original pouring temperature of 1600 ℃ -1610 ℃, and now strictly control the temperature at 1570℃ -1580 ℃. Second, to reduce the temperature drop of molten steel. After the mold are assembled, blow heat wind 150 ℃ -200 ℃ to the cavities for 60 min-90min, and stop blowing 5min before pouring.
u Pouring should be fast, first calculate the pouring time, apply plunger type leakage bag to pour in stipulated time.