我厂研究试制了收集纤维及粉状尘的湿式负压集尘器,大大改善了工人的劳动条件。 目前我厂使用的铸造模型,是以环氧树脂为主要成分的塑料模型。这种模型具有强度高、收缩小、不易变形、表面光洁、质量稳定等优点。但在制作时要加入大量纤维状和粉末状填料,如玻璃纤维、玻璃布、 I plant trial trial collection of dust and powder dust wet negative pressure dust collector, greatly improving the working conditions of workers. At present, I use the casting model of the plant, is based on epoxy resin as the main component of the plastic model. This model has the advantages of high strength, small shrinkage, easy deformation, smooth surface and stable quality. But in the production to join a large number of fibrous and powdery fillers, such as glass fiber, glass cloth,