Citic Dicastal Co., Ltd

Hefei University of Technology

Citic Co., Limited

Bangwei Bai

Zhihua Zhu

Changhai Li

Chunhai Liu

Yongning Wang

Lisheng Wang

Lateng A

Bao Zhang

Haifeng Liu

Zhendong Zhang

Xin Liang

Ji Wang

Liming Xie

Chao Ma

Weimin Zhao

Baoshui Ma

Zhifeng Wang

Peng Qin

Hongren Zhang

A riser tube coating for a cast aluminum alloy includes a coating-riser tube contact layer material and a coating-aluminum liquid contact layer material. The present invention has a coating protection effect to the maximum mainly by designing ratios of ZrO, AlO, ZnO, binders and other materials and a coat drying heat treatment process, and finally realizes effects of protecting a riser tube, being free of aluminum sticking and prolonging a service life.

Riser tube coating for cast aluminum alloy and using method thereof

The invention provides a method of refining aluminum alloy, which is characterized in that aluminum-based nanometer quasicrystal alloy is used as an aluminum alloy refiner to refine the aluminum alloy; the aluminum-based nanometer quasicrystal alloy does not comprise Si, Fe or Cr; the aluminum-based nanometer quasicrystal alloy consists of (1) Al; (2) Mn and (3) La and/or Ce. The refiner selected in the invention is rare earth-containing alloy which has a strong refinement ability on the aluminum alloy, and is nanometer quasicrystal; after adding the rare earth-containing alloy to melt, the element distribution of the rare earth-containing alloy is more uniform than that of traditional alloy; and nanometer quasicrystal particles substantially increase the number of heterogeneous nucleation particles and improve the grain refinement effect of the aluminum alloy.

Method of refining aluminum alloy

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Qinhuangdao, China

Bangwei Bai