肖强伟,范世玺,纪志军,等.大型钛合金泵体的特种砂型铸造工艺研究[J].精密成形工程,2018,10(3):60-64.
XIAO Qiang-wei,FAN Shi-xi,JI Zhi-jun,et al.Special Sand Casting Process of Large Titanium Alloy Pump Body[J].Journal of Netshape Forming Engineering,2018,10(3):60-64. |
| 大型钛合金泵体的特种砂型铸造工艺研究 |
| Special Sand Casting Process of Large Titanium Alloy Pump Body |
| 投稿时间：2018-04-08 修订日期：2018-05-10 |
| DOI：10.3969/j.issn.1674-6457.2018.03.011 |
| 中文关键词: 钛合金 特种砂型铸造 大型铸件 力学性能 尺寸检查 |
| 英文关键词: titanium alloy special sand casting large casting mechanical properties dimensional inspection |
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| 中文摘要: |
| 目的 以大型钛合金泵体为研究对象，研究特种砂型铸造工艺。方法 采用铝制模具，以铝矾土混合物为填料进行造型，氧化钇料浆为面层涂料，经高温烧结后制备成大型钛合金泵体铸造用特种砂型铸型，在真空自耗凝壳炉中进行熔炼浇注，并对铸件外观、冶金质量、成分性能及尺寸进行检验测试。结果 用该铸造工艺研制的大型钛合金泵体铸件成型完整，铸件表面光洁度可达到6.3 μm；铸件的化学成分和力学性能可以满足ASTM B367中C3的指标要求；经热等静压后铸件内部质量达到了ASME 1320中7级；荧光检测结果满足ASME B16.34中的标准，铸件尺寸精度可到达CT9级的要求。结论 铸件检测结果表明，该特种砂型铸造工艺可以实现大型钛合金铸件的制造。 |
| 英文摘要: |
| A large titanium alloy pump body was taken as the object to study the special sand casting process. With bauxite as filler and yttrium oxide plaster as primary layer coating, aluminum mold was used to cast large titanium alloy pump body with special sand after high sintering. The casting was formed in a vacuum consumable furnace. The surface quality, metallurgical quality, chemical composition, mechanical properties and dimension were tested. The results show that, the large titanium alloy pump body casting developed by the casting process was complete in forming and the smoothness of casting surface could reach Ra6.3 μm; the chemical composition and mechanical properties of the casting could meet requirements of C3 level in ASTM B367. After HIP, the internal quality could meet the requirements of ASME 1320 Class 7; FPI results could meet the requirements of the ASME B16.34; the casting dimension accuracy could reach CT9. It shows that the special sand mold casting process can realize manufacturing of large casting titanium alloy pump body. |
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