| Method of casting under low pressure into metal mould involves melt under the action of excess gas pressure in a furnace | |
| 2024-03-22 | |
| 专利权人 | URALVAGONZAVOD RES & PRODN CORP STOCK (URAL-Non-standard) |
| 申请日期 | 2024-03-22 |
| 专利号 | RU2830088-C1 |
| 成果简介 | NOVELTY - Method of low-pressure casting into a metal mould involves filling the metal mould with a melt under the action of excess gas pressure in a furnace, which is varied at preset casting stages. At 1st stage, in range from 0 to 15 s, the excess gas pressure in the furnace is increased from 0 to 17,500 Pa. At 2nd stage, with duration of 12-50 s, the mould is filled with increase of the specified pressure along an exponential curve with a damping rate to the end of the mould filling with achievement of the specified pressure of 15,000-50,000 Pa. At 3rd stage, 40-65 s from the moment of filling the mould, it is held for 15-20 s at constant level of the specified pressure. At 4th stage, in range of 55-85 s, the specified pressure is increased from 45,000 to 65,000 Pa. At 5th stage, in range of 70-650 s, pressure is maintained at the same level until complete crystallisation of the casting. At 6th stage, in range of 600-800 s after complete crystallisation of the casting, the specified pressure is gradually reduced to 0 Pa. USE - Foundry. ADVANTAGE - Reduced number of rejects in the production of castings. 7 cl, 1 dwg, 1 ex |
| IPC 分类号 | B22D-018/04 ; B22D-027/09 |
| 国家 | 俄罗斯 |
| 专业领域 | 材料科学 |
| 语种 | 英语 |
| 成果类型 | 专利 |
| 文献类型 | 科技成果 |
| 条目标识符 | http://119.78.100.226:8889/handle/3KE4DYBR/17588 |
| 专题 | 中国科学院新疆生态与地理研究所 |
| 作者单位 | URALVAGONZAVOD RES & PRODN CORP STOCK (URAL-Non-standard) |
| 推荐引用方式 GB/T 7714 | MARTYNENKO S V,PANSHINA E S. Method of casting under low pressure into metal mould involves melt under the action of excess gas pressure in a furnace. RU2830088-C1[P]. 2024. |
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