BW-200型泥浆泵曲轴箱盖铸造工艺设计
摘要:介绍了BW-200型泥浆泵曲轴箱盖铸造工艺尧浇注系统。内容主要有曲轴箱盖体铸造方案选择、箱盖铸造工艺参数的设计。包括造芯，造型，铸造方法，凝固原则及浇注位置，分型面，砂箱中的铸件数量及排列，砂型数量，工艺参数等。
关键词：铸造工艺；BW-200型曲轴箱盖；浇注系统
1. 泥浆泵的简介
泥浆泵，是指在钻探过程中向钻孔里输送泥浆或水等冲洗液的机械。泥浆泵是钻探设备的重要组成部分。
泥浆泵在常用的正循环钻探中﹐它是将地表冲洗介质──清水﹑泥浆或聚合物冲洗液在一定的压力下，经过高压软管﹑水龙头及钻杆柱中心孔直送钻头的底端，以达到冷却钻头、将切削下来的岩屑清除并输送到地表的目的。
常用的泥浆泵是活塞式或柱塞式的，由动力机带动泵的曲轴回转，曲轴通过十字头再带动活塞或柱塞在泵缸中做往复运动。在吸入和排出阀的交替作用下，实现压送与循环冲洗液的目的。
目录
1.泥浆泵简介······················································5
1.1 BW-200型泥浆泵简介········································5
2. BW-200型泥浆泵曲轴箱盖的工艺分析······························6
2.1结构图·····················································7
2.2工作环境性能要求分析·······································7
3. BW-200型泥浆泵曲轴箱盖选材·····································8
3.1. 球墨铸铁的金相组织，性能特点，牌号，技术要求··············8
3.2. 灰铸铁的金相组织，性能特点，牌号，技术要求·················· 11
3.3. 材料确定················································· 18
4.灰铸铁的熔炼····················································18
4.1熔炼的概念·················································18
4.2灰铸铁的熔炼工艺方式·······································19
5.浇筑系统的设计··················································23
5.1.金属液的充型···············································23
5.1.1影响金属液充型能力的因素·····························23
5.2.浇筑系统各部分的结构形式···································24
5.2.1浇口·················································25
5.2.2直浇道···············································27
5.2.3横浇道···············································29
5.2.4内浇道···············································29
5.2.5浇筑系统的选择·······································29
5.2.6灰铸铁件浇注时间的确定·······························30
5.2.7阻流组元截面积的计算几个组元的直接比例关系的确定·····31
5.3.灰铸铁铸件各部分浇注尺寸···································31
5.4. 灰铸铁工件冒口尺寸········································32
6. 铸件凝固控制与冒口设计·········································32
6.1灰铸铁的凝固特点···········································32
6.2 铸件的收缩及收缩缺陷·······································33
6.2.1铸件的收缩···········································33
6.3 冒口补缩原理及补贴设计·····································33
7.BW-200箱盖的铸造工艺设计········································34
7.1 铸造工艺方案的确定·········································34
7.1.1零件结构的铸造工艺性·································34
7.1.2铸件浇注位置的选择···································35
7.1.3铸型分型的选择·······································35
7.2 铸造工艺设计参数···········································36
7.3 砂芯设计···················································40
7.3.1砂芯的固定与定位······································40
7.3.2芯头的尺寸············································41
7.3.3芯骨设计··············································41
7.3.4砂芯的排气············································41
8.灰铁铸件缺陷 ····················································42
8.1铸件缺陷···················································42
8.2灰铸铁件氧化夹渣缺陷特征以及防止方法·······················42
8.3灰铸铁件缩松缺陷特征以及防治方法···························42
8.4灰铸铁件气孔气泡缺陷特征以及防治方法·······················43
8.5球化不良和求花衰退的特征 ································43
9.铸件工艺卡······················································45
小结······························································47
参考文献··························································48
参考文献
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