The material selection for outdoor chain hoists for stages needs to balance wear resistance and anti-adhesion properties. The alloy steel chain with an electrophoretic coating on its surface can not only isolate the abrasion of metal surfaces by dust particles through the coating but also reduce lubrication failure caused by oil adhesion. Combined with regular grease maintenance, the equipment can maintain stable operation during 8 hours of frequent daily use, with the wear at the chain pin joints controlled below 0.1 millimeters, which is much lower than the 0.5 millimeters per month wear rate of ordinary carbon steel materials in the same environment. For short-term outdoor exhibitions, such as music festival stage construction and temporary art installation displays, the material selection of outdoor chain hoists for stages needs to balance lightweight and anti-ultraviolet performance. The hand chain hoist shell made of a combination of aviation-grade aluminum alloy and high-strength engineering plastics can reduce the weight of the equipment for easy transportation. The added anti-UV additives can resist material aging caused by direct sunlight. After 72 hours of continuous exposure to the sun, the impact strength of the shell of the outdoor chain hoist for stages can still maintain more than 90% of its initial value, avoiding exposure and damage to the internal mechanical structure due to brittle cracking of the shell.
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