论文部分内容阅读
为防止金属结构件加工出的焊接坡口。因不能马上施焊而生锈,我们配制了一种快干、无毒、防锈性能好的涂料,把它涂敷在刚刚加工好的焊接坡口及附近表面上,能起到防锈作用,且焊前不必刮去,对焊接质量无影响。一、涂料配方及配制工艺配方(重量比):聚乙烯醇缩丁醛(P.V.B)15％;异丙醇(CH_3CHCH-CH_3)46％;二甲苯(C_7H_8)36％;铝粉浆(<325目非浮型)3％。配制工艺:一、将聚乙烯醇缩丁醛溶解于异丙醇中,搅拌使粘度达75～
To prevent the metal structure of the processing of the welding groove. Because we can not immediately rust and welding, we have formulated a fast-drying, non-toxic, rust-proof coating of good performance, it is applied to the newly welded groove and the welding near the surface, can play a rust , And do not have to scrape before welding, no impact on the quality of welding. First, the paint formula and preparation process formula (weight ratio): polyvinyl butyral (PVB) 15%; isopropanol (CH_3CHCH-CH_3) 46%; xylene (C_7H_8) 36% Head non-floating type) 3%. Preparation process: First, the polyvinyl butyral dissolved in isopropanol, stirring to a viscosity of 75 ~