摘要
QT450-10过桥箱盖铸件在生产过程中产生缩孔、缩松、挤砂、芯子大、生产效率低等问题,通过将原工艺中的#1芯改为上型吊砂、设计了φ60 mm×35 mm定位芯头定位、一型布置3件、增加出气片和出气针等措施,该铸件出品率由原先的65%提高到70.2%、砂芯质量减少19 kg、生产效率提高50%、废品率控制在2.5%以内。
In the production process,QT450-10 bridge cover box castings had some problems,such as shrinkage cavity,shrinkage porosity,sand inclusion,large core,low produce efficiency and so on. By changing from #1 core of original process to superior type cod,designing positioning core head with dimensions Ф60mm×35mm,arranging three pieces in a mold,increasing out gassing slices and outgassing needles,production rate of casting from the original 65% increased to 70.2%,quality of sand core declined by 19 kg,produce efficiency increased by 50%,and rejection rate was controlled within 2.5%.
出处
《现代铸铁》
CAS
2014年第2期61-63,共3页
Modern Cast Iron
关键词
过桥箱盖铸件
缩孔
缩松
工艺改进
bridge cover casting
shrinkage cavity
shrinkage porosity
process improvement
