摘要
介绍了铸件产生砂孔、气孔、漏箱、粘砂缺陷的原因,以及生产线湿型砂主要检测的5个性能指标:紧实率、含水量、透气性、湿压强度和热湿拉强度。利用统计分析软件SPSS建立了铸件缺陷与湿型砂性能的回归方程,通过实时调整型砂配方中的膨润土、煤粉和水分的加入量,严格控制型砂的紧实率在43%～47%,含水量春、冬两季在2.6%～2.8%,夏、秋两季在3.0%,铸件缺陷较之前得到一定程度的控制。
The reasons causing sand inclusion, blowhole, metal leakage and metal penetration defects in castings weir described, and five main test items of properties of green moulding sand used for an air impact moulding line was introduced including eompactability, moisture, permeability and hot-wet tensile strength. By using statistics analysis software SPSS, some regressive equations indicating relationship between casting defects and properties of green sand were established. By through adjusting at real time the addition amount of bentonite , coal dust and water to strictly keep the compactability in the range of 43%-47%, keep the moisture in the range of 2.6%-2.8% for spring and winter time, and at 3% tor summer and autumn time, the casting defects have been controlled more effectively than betbre .
出处
《现代铸铁》
CAS
2008年第4期85-88,共4页
Modern Cast Iron
关键词
型砂性能
粘土砂
铸件缺陷
SPSS
properties of moulding sand
clay moulding sand
casting defect
SPSS
