DISA型砂手册.doc

目录 1型砂性能、配方、原材料······ 1.1 推荐的型砂性能·························· 1.1.1 推荐的型砂性能数据················· 1.1.2 型砂配方 1.1.3 原材料 ···················· 1.2型砂性能数据的确定·················· 1.2.1原砂······················· 1.2.2煤粉······················ 1.2.3型砂······················ 1. 2.3.1型砂粒度··························· 1.2.3.2型砂强度··················· 1.2.3.3有效膨润土含量··············· 膨润土质量······················ 膨润土性能······················ 膨润土类型····················· 膨润土主要质量数据··············· 水分······················ 1.2.3.4失效颗粒的含量··············· 1.2.3.5混制效果······························ 1.2.3.6砂温······························ 1.2.3.7抗拉及剥落强度··············· 1.2.3.8热湿拉强度·················· 1.2.3.9湿压强度······················· 1.2.3.10透气性························· 1.2.3.11紧实率························· 基本规律···················· 紧实率影响因素··············· 增湿调匀点定义··············· 1.2.3.12 AFS粘土含量(总体颗粒含量) ········ 1.2.3.13 烧灼减量·················· 1.2.3.14 挥发性物质··············· 1.3 型砂的回用······················· 2 型砂性能控制 ··············· 2.1 混砂机中型砂成分的控制··············· 2.2实验室型砂控制···················· 3 造型材料测试··············· 3.1测试设备························ 3.2型砂测试······················· 3.2.1取样······················ 舂砂样 3.2.2强度特性························ 热湿拉强度 3.2.3紧实率······················ 松散密度 2.4水分······················ 3.2.5有效膨润土含量的测定··············· 亚甲基兰溶液的准备 2%Na4P2O7溶液的准备 0.5N H2SO4溶剂制备 标准曲线的制作 型砂中有效膨润土含量测试步骤 3.2.6 AFS粘土含量测试步骤··············· 3.2.7烧灼减量测试步骤及挥发性物质测试步骤······· 挥发性物质测试及烧灼减量测试结果··············· 3.2.8筛分分析测试步骤 ····················· 3.2.9 型砂水分敏感性························ 测试步骤 解释 附注 3.2.10混砂效果······················ 由紧实率测定的方法及其说明··············· 由热湿拉强度测定的方法及其说明···············