Steps of moving staircase and die casting technique thereof

Abstract

The invention relates to a lift step of automatic lifter, wherein said step is made from aluminum-magnesium alloy; said aluminum-magnesium alloy contains aluminum at 8.5-9.3%, manganese at 0.25-0.50%, zinc at 0.50-1.0%, mixed rare-earth element at 0.5-1.5%, and the left magnesium; the casting method of said step comprises: heating the aluminum-magnesium alloy on the preheater; then adding it into the fusion thermal-insulated furnace to be smelted and kept warm; then compression casting it on the casting machine to form the step in needed shape, while the kept temperature in casting is 670-690Deg. C and the injection speed of casting machine 6.5-8m / s, and injection pressure is 250-300pa, wherein the step specific weight of aluminum-magnesium alloy is lower, to reduce the operation efficiency of lifter, prolong the service life, and reduce the cost.

Description

technical field [0001] The invention relates to a part of an escalator, in particular to a step of an escalator made of magnesium-aluminum alloy material and a die-casting process thereof. Background technique [0002] The steps of existing escalators are mostly made of aluminum-silicon alloy materials. [0003] For example, a step of an escalator made of YLD102 aluminum-silicon alloy material, said YLD102 aluminum-silicon alloy material is composed of the following components by weight: Si 10.5-13%, Fe 0.6-0.8%, Cu≤0.5 %, Mg≤0.5%, Mn≤0.25%, Zn≤0.10%, Ti≤0.15%, Ni≤0.05, Pb≤0.05%, the sum of other impurity elements≤0.15%, and the rest is Al. The steps of such escalators are heavy and, due to the rising price of aluminum, the manufacturing costs of such steps are also increasing. [0004] There are also escalator steps made of stainless steel. Since the main components of stainless steel are steel, chromium, and nickel, the weight of this elevator...

AI Technical Summary

Problems solved by technology

The steps of the escalator are heavy and expensive to manufacture due to rising aluminum prices

[0004] There are also escalator steps made of stainless steel. Since the main components of stainless steel are steel, chromium, and nickel, the weight of this elevator is very large, and it requires high operating costs during operation.