为防止铸铁件产生腐蝕和生锈,要在其表面涂刷一层底漆。铸件底漆的好坏直接影响到产品的質量和寿命。过去,我厂采用铁紅醇酸作铸件的底漆,用刷子手工刷漆或用喷枪手工喷漆。但漆膜不均,常有“花脸”出现,而且生产率低,劳动条件恶劣,特别是漆中含有大量的有毒物質一苯,使工人易得职业病。 In order to prevent corrosion and rust cast iron pieces, to paint a layer of primer on its surface. Casting primer directly affects the quality and life of the product. In the past, our factory used iron red alkyd as a primer for casting, hand brushing with a brush or hand painting with a spray gun. However, the film is uneven, often “Hua Lian” appear, and low productivity, harsh working conditions, especially the paint contains a lot of toxic substances benzene, so that workers are susceptible to occupational diseases.