Date of Award

2019-01-01

Degree Name

Master of Science

Department

Metallurgical and Materials Engineering

Advisor(s)

Devesh Misra

Abstract

Steel industry is a major emitter of air pollutants, a leading industrial consumer of water, a minor source of contaminated liquids, a massive producer of solid waste, and a significant source of CO2. The objective on this thesis work is to minimize the greenhouse gas emissions when processing steel. Gears and bearings were evaluated based on their performance when exposed to cyclic stresses. The importance for having a proper set up on rolling mills to increase efficiency for processing rebar steel has been detailed on paper. In contrast, mechanical vibration has been measured on gears and bearings to determine efficiency and to avoid fatigue failure on components. These components are used during hot rolling to plastically deform steel billets and are exposed to cyclic and variable load stresses. It was determined the total amount of energy loss in the form of mechanical vibration, and it was concluded that materials selected on gears and bearings complied with design criteria by failing progressively and not suddenly. Consequently, it was also concluded that energy efficiency on reheating processing is highly affected by fatigue failure on any of the components within the hot rolling processing.

Language

en

Provenance

Received from ProQuest

File Size

66 pages

File Format

application/pdf

Rights Holder

Jesus Gabriel Garcia

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