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我厂有很多鑄件都采用潮型鑄造。造型与澆鑄二道工序,一般相隔5～12小时,而扣箱一般都在澆注前1～2小时。因此砂型表面已被吹干,砂粒会自动脫落。这样在澆注时,砂型表面或靠近泥芯部分的砂粒常被鉄水冲掉,使鑄件夾砂,造成廢品。为了改进产品質量,曾經增加了砂型中的水分,但这不是个好办法,并且不好控制,極易造成外干中湿的砂型,使鑄件产生气孔。經車間技术組与工人合作,学習了苏联先进經驗在扣箱前噴糖稀水,經試驗証明效果很好,質量提高了15～20％。造型方法与以前一样,只是在扣箱前用噴霧器在砂型表面噴射一層糖稀
I have a lot of castings are used tide casting. Molding and casting two procedures, generally separated by 5 to 12 hours, while deduction box generally 1 to 2 hours before pouring. Therefore, the sand surface has been dried, sand will automatically fall off. So pouring, the surface of the sand or near the mud core part of the sand is often washed away water, sand casting, resulting in waste. In order to improve product quality, the sand in the sand has been increased, but this is not a good idea and is not well controlled. After the workshop technology group and workers cooperation, learning the advanced experience of the Soviet Union in the deduction before spraying sugar water, the test proved effective, quality increased by 15 to 20%. Modeling method as before, just before the box with a sprayer sprayed on the sand surface of a thin syrup