| Molten salt cleaning is an important cleaning approach in remanufacturing which can remove a variety of contaminants from metal substrates with high efficiency. Facing the very limited research of this approach in literature, this thesis intends to characterize molten salt cleaning process and optimize its parameters when big parts with complicated shapes are cleaned.;Based on the development of molten salt cleaning and studies on contaminations, two experiments are conducted. The first one investigates the influences of the hot salts on three metal substrates and shows the applicable of cleaning carbon steel and grey iron parts with molten salt. The other one which applies a central composite design demonstrates that the cleaning efficiency tends to be better with the increase of temperature and decrease of quantities of sodium nitrate. Furthermore, digital models are established and recommendations are given based on the analysis of the results. |
