鑄件型體與模具常數驗證之研究

The Study of Validation between the Shape factor and Mold Constant

許富淵(Fu-Yuan Hsu)；洪啟銘(Chi-Ming Hung)；馮玉麟(Yu-Lin Feng)

凝固時間 ； 形狀係數 ； 模具常數 ； 冒口設計 ； solidification time ； shape factor ； mold constant ； feeder design

鑄造工程學刊

48卷2期（2022 / 12 / 01）

11 - 24

繁體中文;英文

提出新的“鑄件型體分析技術（CSAT）”，分析複雜鑄件型體之最終凝固時間，以及預測所需要冒口大小。建立型體分析技術與冒口大小預測之演算公式及方法準則，並且進行公式準則之模擬及鑄造實驗驗證。應用所建立的複雜型體的形狀係數與凝固模數中模具常數之間的關聯，來預測該鑄件型體的凝固時間，以及所需冒口體積大小。所開發的球墨鑄鐵之型體與凝固時間關係式，成功驗證四種不同大小同一個型體的煞車鉗體鑄件，其分別所需要之冒口大小。

A so-called "casting shape analyzing technique (CSAT)" was developed in this study for predicting the solidification time and the feeder size required for castings with complicated shapes. In this technique, the rules and the calculation equations for predicting an accurate feeder size were established and they were validated by the modeling and casting experiments. For casting with complicated shapes, the relationship between the shape factor and the mold constant was constructed. Using this linear equation, both the solidification time and the required feeder size could be calculated for an arbitrary shape of a casting. Four ductile caliper castings with the same geometric shape were successfully validated. This technique accurately predicted the required feeder size respectively for these caliper castings.

1. 陳宇宏,許富淵(2019)。球墨鑄鐵凝固縮孔模擬模組之驗證。鑄造工程學刊，45(3)，25-38。
   連結：
2. Adams, C. M., Jr,Taylor, H. F.(1957).Flow of Heat from Sand Castings by Conduction Radiation and Convection.AFS Transactions,170-176.
3. Campbell, J.(1991).Castings.Guildfird:Butterworth- Heinemann.
4. Campbell, J.(1994).Review of Fluidity Concepts in Castings.Cast Metals,227-237.
5. Campbell, John(2013).Complete Casting Handbook, Metal Casting Process, Metallurgy, Techniques and Design.Butterworth-Heinemann.
6. Chvorinov, N.(1963).Solving Feeders and Shrinkheads.Prague:International Foundry Congress.
7. N. Chvorinov, Theory of Casting Solidification, Giesserei, 1940, 27, 177-186, 201-208, 222-225.
8. Flemings, M. C.(1974).Solidification Processing.New York:McGraw Hill.
9. G. Halbert, Elements of a Mathematical Theory of Founding, H. Vaillant Carmanne, Liege, 1945.
10. Hsu, Fu-Yuan,Chen, Yu-Hung(2019).The Validation of Feeder Modeling for Ductile Iron Castings.Shape Casting: 7th International Symposium Celebrating Prof. John Campbell's 80th Birthday,San Antonio, Texas:
11. Namur, R.(1956).Generalized Calculation of Cooling Moduli by the Uniform Peripheral Layer Method.Fonderie Belge,89-122.
12. Pellini, W.S.(1953).Factors which Determine Riser Adequancy and Feeding Range.AFS Transactions,61-80.
13. Ruddle, R.W.(1957).The solidification of Castings.London:The Institute of Metals.
14. Saravanan, V.S.,Palanisamy, C.,Mohanraj, M.,Shah, J.,Bhero, S.(2016).A Study on Relationship between Casting Geometric Modulus and Feeding Distance of Ductile Iron Bar-Shaped Castings.International Journal of Metalcasting,10(4)
15. C. Schwarz, Mathematical Treatmetn of Cooling and Solidification of Molten Metals, Archiv für das Eisenhüttenwesen, 1931, 139-148, 177-191.
16. Tiryakioglu, M.,Tiryakioglu, E.,Askeland, D.R.(1997).The effect of Casting Shape and Size on Solificaiton time: a new approach.Int. J. Cast Metals Res.,9,259-267.
17. 李正隆,許富淵(2013)。陶瓷泡沫濾網應用於鋁合金重力鑄造。鑄造工程學刊，39(3)，39-48。

1. 馮玉麟,許富淵,洪啟銘(2023)。重力鑄造模具數位輔助設計系統。機械工業雜誌，489，41-45。
2. 羅章元,許富淵,洪啟銘(2023)。鋁合金重力金屬模具常數和型體形狀係數影響冷接缺陷的研究。鑄造工程學刊，49(1)，25-32。