Welding fume particles can pose serious health risks because of its nanoscaled size and pulmonary toxicity. The main components of welding fume particles are iron oxides, most of which are easily magnetized in a magnetic field and subject tomagnetic attraction. According to this characteristic, we developed a magnetic composite filter composed of a polyester filter and neodymiumiron boron (NdFeB) particles to improve the filtering effect on fumeparticles. The performance parameters ofmagnetic filter were studied experimentally. At 5 cm/s face velocity, the filtration efficiency and quality factor ofmagnetic filter #4 were 2.09 times and 1.55 times of those of filter #0 (no NdFeB particles coated), respectively. In the loading process, the particles accumulation did not weaken themagnetic attraction effect. The filtration efficiencies of magnetic and nonmagnetic filters for 600 nmparticles increased by 10.53% at 14.65 g/m(2) and 8.17% at 14.33 g/m(2), respectively. (C) 2020 Published by Elsevier B.V.