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Summary: In this study, sesame hull oil (SHO) was extracted to characterise its composition. SHO was heated to determine the volatiles and their effect on the quality of cold‐pressed dehulled sesame oil (SO). Seventeen fatty acids, four lignans (1088.65 mg/100 g), tocopherols (284.17 mg/100 g) mainly in the γ‐form, and sterol (1722.16 mg/100 g, 4.67 times more than in sesame kernel oil) were detected in SHO. After heating, the volatiles found in SHO were mainly aldehydes and acids, represented by hexanal (fatty, green aroma) and 3‐methyl‐butanoic acid (fatty, rancid aroma), respectively. The acid value, peroxide value, anisidine value, and turbidity of SO increased significantly after adding SHO, and the scavenging ability of 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) was enhanced. The oxidation induction times of SO with the addition of SHO ranged from 8.93 to 9.53 h. The present study provides information about SHO and a new direction for the utilisation of sesame hulls. [ABSTRACT FROM AUTHOR]

External magnetic field (EMF)-assisted high-current CO2 welding is beneficial for improving the large spatter and poor performance of the welding heat-affected zone for mild steels under high-current welding specifications. In this paper, the droplet transfer behaviors were determined using a high-speed camera on a self-developed magnetically controlled CO2 welding system. Based on these welding specifications, a three-dimensional, transient, multi-energy field coupling welding system model to investigate the mechanism of the droplet and molten pool in EMF-assisted welding was developed. The microstructure and mechanical properties of the welded joint were systematically studied. The results show that the Lorentz force applied by the EMF to twist the droplet decreases the accumulated energy in the short-circuited liquid bridge and changes the liquid metal flow condition, both of which reduce the spatter by 7% but increase the welded joint hardness by 10% and tensile strength by 8%. [ABSTRACT FROM AUTHOR]