| Filling system for investment cast Ni-base turbine blades | |
| D. Z. Li; J. Campbell; Y. Y. Li | |
| 2004 | |
| Source Publication | Journal of Materials Processing Technology
 |
| ISSN | 0924-0136 |
| Volume | 148Issue:3Pages:310-316 |
| Abstract | In investment foundries, it is usual to pay relatively little attention to the design of the filling system of a casting. Vacuum-cast turbine blades represent a typical case, where the mould filling process is poorly controlled, the mould cavities themselves often being top-filled. The consequential surface turbulence causes the entrapment of oxide film on the liquid surface, despite the use of vacuum melting and pouring. In this work, bottom filling principles were used to minimize turbulence. X-ray radiographic video was used to observe and compare the filling of both bottom- and top-filled moulds. Ni-based alloy investment-cast blades melted and cast in vacuum clearly validated the bottom filling design. Compared to conventional top filling in vacuum, dye penetrant indications were reduced by approximately a factor of 10, and hot cracking appeared to be eliminated. (C) 2004 Elsevier B.V. All rights reserved. |
| description.department | inst met sci & technol, chinese acad sci, shenyang 110016, peoples r china. univ birmingham, irc mat, birmingham b15 2tt, w midlands, england.;li, dz (reprint author), inst met sci & technol, chinese acad sci, shenyang 110016, peoples r china;dzli@imr.ac.cn |
| Keyword | Investment Casting Ni-base Turbine Blade Defects Alloys |
| URL | 查看原文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/35403 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | D. Z. Li,J. Campbell,Y. Y. Li. Filling system for investment cast Ni-base turbine blades[J]. Journal of Materials Processing Technology,2004,148(3):310-316. |
| APA | D. Z. Li,J. Campbell,&Y. Y. Li.(2004).Filling system for investment cast Ni-base turbine blades.Journal of Materials Processing Technology,148(3),310-316. |
| MLA | D. Z. Li,et al."Filling system for investment cast Ni-base turbine blades".Journal of Materials Processing Technology 148.3(2004):310-316. |
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