Authors:

Manila Kunwar

Date Created:

Not specified

Course Title:

Professor:

Not specified

About Paper:

Current high performance quench oils used for the heat treatment of metals are petroleum derivatives and pose a threat to the environment. Vegetable oils are a potential alternative that is more sustainable and less toxic. However, due to the higher cost of bio-based formulations compared to petroleum oils and the low thermal-oxidative stability attributed by the molecular structure of vegetable oils, their use in industrial applications is not favorable. Furthermore, high performance petroleum oils generally provide better cooling performance compared to vegetable oils. This study aims to determine the effects of additives on vegetable oils to ultimately improve their thermal-oxidative properties and formulate a quenchant that provides appropriate and favorable cooling characteristics. Various properties were measured such as boiling point, degradation point, flash point, specific heat capacity, and viscosity of different oils including silicone-based lubricants, ester oils, vegetable-based oils, industrial oils, gear lubricants, and quench salts to analyze the significance of each property on cooling characteristics. By determining the most significant properties, additives can be chosen appropriately to enhance those properties. Some of the additives that are used include brominated vegetable oil, tributyl phosphate, triphenyl phosphate, and alkylated diphenylamine. This study will compare the cooling curves of the improved natural oils with the corresponding pure oil to determine the effect of additives on the cooling characteristics. The extensive database created from this study can further be used for machine learning applications to predict the cooling curve solely from quenchant characteristics. Keywords: Quenching; Thermal-Oxidative Stability; Additives; Heat Treatment; Sustainability

Source:

Purdue University / 2024

Topics:

No topics listed

Co-authors:

Manila Kunwar