Abstract
With the development of lightweight, aluminum alloy escalator steps are more and more widely used. This paper analyzes an escalator accident related to steps. At the same time, different types of aluminum alloy escalator steps are selected for fracture test, and the parameters such as fracture strength and maximum fracture deformation are analyzed. The fracture surface is analyzed by metallography and scanning electron microscope. The results show that most steps have metallurgical defects such as porosity and shrinkage. It is of great significance to scientifically design and manufacture aluminum alloy escalator steps and ensure their safe use.
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