Effect of Silicon and Magnesium Content on Properties of Aluminum Based Sintered Bearing
2017
Because of light weight and low cost, the aluminum-based oiled bearing has become one of the hot research points in the field of oiled bearing. Due to the shortcomings of aluminum itself, such as low hardness and poor weak bearing capacity and wear-resisting, therefore, Cu, Mg, Si and other elements are needed to add into the aluminum matrix to improve the hollow ratio, radial crushing strength and other performance parameters of oil bearing. In this paper, powder metallurgy method will be used to manufacture Al-Cu oiled bearing, with copper content of 7.5% Al-Cu mixed powder as the base, add Silicon first and study the effect of silicon content on the sinter properties. Then, adding magnesium in Al-Cu-Si substrate and the effect of magnesium content on properties will also be discussed. The research shows that when the matrix of the silicon content is 1.0%, and magnesium content is 2.0%, the aluminum-based oiled bearing that was manufactured has good comprehensive properties.
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