Abstract
A sugar plant is designed to operate with the minimum disruption during the sugar cane harvesting season, and equipment must be maintained in a high standard of repair. When failure of equipment does take place, it is important to identify the cause to minimize the likelihood of any future problems. This paper details the analysis of a failure of conveyor chain pins that had operated for only six weeks. The pins had been heat treated so that they had become susceptible to hydrogen embrittlement, and had cracked. The source of hydrogen was attributed to corrosion of other steel components in the system. In order to minimize the likelihood of future failures, it was recommended that the source of the corroded components be identified. In addition, it was recommended that the authors should liaise with the plant personnel in order to recommend a suitable heat treatment schedule for future pins.
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