FC150灰口鐵鑄件的物理性質量測與分析

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：64

、訪客IP：3.144.99.134

姓名

蔡易璋(Yi-chang Tsai) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

FC150灰口鐵鑄件的物理性質量測與分析

相關論文

★ 7005與AZ61A拉伸、壓縮之機械性質研究	★ 雷射去除矽晶圓表面分子機載污染參數的最佳化分析
★ 球墨鑄鐵的超音波檢測	★ 模具溫度對TV前框高亮光澤產品研討
★ 高強度7075-T4鋁合金之溫間成形研究	★ 鎂合金燃燒、鑽削加工與表面處理之研究
★ 純鈦陽極處理技術之研發	★ 鋁鎂合金陽極處理技術之研發
★ 電化學拋光處理、陽極處理中硫酸流速與封孔處理對陽極皮膜品質之影響	★ 電解液溫度與鋁金屬板表面粗糙度對陽極處理後外觀的影響
★ 製程參數對A356鋁合金品質的影響及可靠度的評估	★ 噴砂與前處理對鋁合金陽極皮膜品質的影響
★ 鎂合金回收重溶之品質與疲勞性質分析	★ 鋁合金熱合氧化膜與陽極氧化膜成長行為之研究
★ 潤滑劑與製程參數對Al-0.8Mg-0.5Si鋁合金擠壓鑄件的影響	★ 摩擦攪拌製程對AA5052鋁合金之微觀組織及對陽極皮膜的影響

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

至系統瀏覽論文 ( 永不開放)

摘要(中)

本研究完成 FC150 灰口鐵鑄件的物理性質量測與分析,實驗材料為六和機械提供的 Y 型標準鑄塊與煞車盤;探討灰口鐵物理性質與鐵水澆鑄溫度、溫降、是否通過流路系統等之間的影響。研究內容包括:(1) 使用 Stead 試劑與熱鹼腐蝕的方法,根據試片取樣位置綜合比較不同鑄件於不同澆鑄溫度時顯微組織的變化。 (2) 比較不同鑄件的熱性質,包含比熱、熱擴散、熱傳導、熱膨脹係數等。(3) 藉由超音波檢測法建立不同鑄件的超音波波速、超音波衰減率與共晶胞大小之關係。
由實驗結果顯示:(1) 灰口鐵的片狀石墨皆隨著澆鑄溫度降低而變長、共晶胞尺寸隨澆鑄溫度降低而增加。(2) 由金相組織觀察與特徵長度得知,Y 型鑄塊片墨型態較粗大且片墨比率較少,煞車盤片墨型態較細小且片墨比率較多。(3) 最佳澆鑄溫度範圍約為 1400°C 至 1420°C 之間。 (4) 兩種鑄件的比熱和熱擴散係數對於不同溫度的變化趨勢相近。(4) 熱傳導係數受片墨面積分率與型態影響甚鉅。(5) 超音波衰減率隨著共晶胞尺寸增加而增加。(6) Type A/ Size 2-3 石墨可得最大的衰減率,並有助於提高煞車盤的制震能。

摘要(英)

In this study, the physical properties of gray iron casting (FC150) prepared with various pouring temperatures were measured and comprehensively discussed. Metallography observation was conducted from different sectioning positions. The eutectic cell size and microstructure of gray iron were revealed by Stead reagent and hot alkaline etching methods. The relation between ultrasonic attenuation and eutectic cell size was also included in this study. Thermal properties of different samples from Y-block and brake disc were also compared, including specific heat, thermal diffusivity, and thermal conductivity.
The average graphite flakes length increased with decreasing pouring temperature. From microstructure observation and characteristic length ratio analysis, samples from brake disc contain more graphite area fraction and the graphite flakes show thinner, finer than those from Y-block samples, which show thicker, slender and less graphite area fraction. Eutectic cell size increased with decreasing pouring temperature, and smaller eutectic cell was obtained from brake disc samples due to its higher cooling rate and more nuclei affected by flowing thorough gating system. The thermal conductivity is clearly affected by area fraction and types of flake graphite. Gray iron with Type A graphite in size of class 2 to 3 obtains maximum attenuation, which is favorable to enhance the damping capacity.

關鍵字(中)

★ 灰口鐵
★ 微結構
★ 共晶胞
★ 熱性質
★ 超音波

關鍵字(英)

★ Gray iron
★ Microstructure
★ Eutectic cell
★ Thermal properties
★ Ultrasonic

論文目次

摘要........................................................................................................................i
Abstract.................................................................................................................ii Table of Contents.............................................................................................iii-xi List of Figures.................................................................................................v-ix List of Tables.....................................................................................................x-xi
I. Preface............................................................................................................1
II. Introduction...............................................................................................2-44
2.1 General Background and Research Purpose............................................................2-6
2.2 Liquid Structure of Cast Iron...................................................................................6-9 2.2.1 Fe3C molecule.................................................................................................7 2.2.2 Carbon cluster (C6)n.....................................................................................7-9
2.3 Fe-C (Graphite) Phase Diagram............................................................................9-12
2.3.1 Superimposed Fe-C (Graphite) and Fe-Fe3C phase diagram..................10-12
2.4 Non-equilibrium Solidification of Cast Iron.............................................................13-35
2.4.1 Eutectic temperature.....................................................................................14
2.4.2 Classification of cast iron in non-equilibrium solidification process......15-17
2.4.3 Transformation between stable and metastable systems in cast iron.......17-29
2.4.4 Classification of eutectic cells.................................................................29-30
2.4.5 Growth of primary austenite....................................................................31-35
2.5 Thermal Properties of Gray Iron.........................................................................35-43
2.6 Investigation of Microstructure of Gray Iron by Ultrasonic Testing...................43-44
III. Materials and Methods..................................................................................45-51
3.1 Materials and its Preparation...............................................................................45-47
3.2 Experimental Method..........................................................................................48-51
A. Metallography observation..........................................................................48-49
B. Thermal properties of gray iron........................................................................49
C. Ultrasonic testing..............................................................................................50
D. Inclusion particle analysis. ..............................................................................50
IV. Results and Discussion............................................................................52-83
4.1 Classification of Graphite Morphologies of Gray Iron.......................................52-59
4.2 Fraction of Graphite and Characteristic Length Ration of Gray Iron..................59-62
4.3 Eutectic Cell Size and Color Microstructure of Gray Iron..................................62-72
Summary I.................................................................................................................72
4.4 Thermal Properties of Gray Iron........................................................................73-78
4.5 Ultrasonic Characteristic of Gray Iron................................................................79-82
Summary II...............................................................................................................83
V. Conclusion............................................................................................................84
VI. Reference........................................................................................................85-86
Appendix................................................................................................................87-99

參考文獻

[1] A. H. Committee, “Metallography and Microstructures2004,” Aug. 2005.
[2] Z. Jiyang, “Colour Metallography of Cast Iron,” China Foundry, vol. 6, no. 1,
pp. 57–69, Feb. 2009.
[3] Z. Jiyang, “Colour Metallography of Cast Iron,” China Foundry, vol. 6, no. 2,
pp. 152–163, May 2009.
[4] A. H. Committee, Casting. ASM International, 1988.
[5] D. Holmgren, “Review of thermal conductivity of cast iron,” International
Journal of Cast Metals Research, vol. 18, no. 6, pp. 331–345, Dec. 2005.
[6] J. CECH, “Measuring the Mechanical-Properties of Cast Irons by Ndt
Methods,” Ndt International, vol. 23, no. 2, pp. 93–102, Apr. 1990.
[7] D. N. Collins and W. Alcheikh, “Ultrasonic non-destructive evaluation of the matrix structure and the graphite shape in cast iron,” Journal of Materials
Processing Technology, vol. 55, no. 2, pp. 85–90, 1995.
[8] W. ORLOWICZ and Z. OPIEKUN, “Ultrasonic-Detection of Microstructure
Changes in Cast-Iron,” Theoretical and Applied Fracture Mechanics, vol. 22,
no. 1, pp. 9–16, 1995.
[9] A. International, Casting design and performance. Materials Park , Ohio :
ASM International, 2009.
[10] Z. Jiyang, “Colour Metallography of Cast Iron,” China Foundry, vol. 6, no. 3,
pp. 255–267, Aug. 2009.
[11] E. Fraś and M. Górny, “Inoculation Effects of Cast Iron,” Archives of Foundry
Engineering, vol. 12, no. 4.
[12] L. Elmquist and A. Diószegi, “Relation between SDAS and eutectic cell size in
grey iron,” International Journal of Cast Metals Research, vol. 23, no. 4, pp.
240–245, Aug. 2010.
[13] R. L. Hecht, R. B. Dinwiddie, and H. Wang, “The effect of graphite flake
morphology on the thermal diffusivity of gray cast irons used for automotive brake discs,” Journal of Materials Science, vol. 34, no. 19, pp. 4775–4781, 1999.
[14] D. Holmgren, A. Dioszegi, and I. L. Svensson, “Effects of carbon content and solidification rate on thermal conductivity of grey cast iron,” China Foundry, vol. 4, no. 3, pp. 210–214, Aug. 2007.
[15] D. Holmgren, A. Dioszegi, and I. L. Svensson, “Effects of carbon content and solidification rate on the thermal conductivity of grey cast iron,” Tsinghua Science and Technology, vol. 13, no. 2, pp. 170–176, 2008.
[16] E. P. Papadakis, “Ultrasonic attenuation caused by Rayleigh scattering by graphite nodules in nodular cast iron,” J. Acoust. Soc. Am., vol. 70, no. 3, pp. 782–787, 1981.
[17] W. M. Gao, C. Glorieux, S. E. Kruger, K. Van de Rostyne, V. Gusev, W. Lauriks, and J. Thoen, “Investigation of the microstructure of cast iron by laser ultrasonic surface wave spectroscopy,” Materials Science & Engineering A, vol. 313, no. 1, pp. 170–179, 2001.
[18] E. Fraś and M. Górny, “An inoculation phenomenon in cast iron,” Archives of Metallurgy and Materials, 2012.
[19] S. O. Olsen, T. Skaland, and C. Hartung, “Inoculation of grey and ductile iron a comparison of nucleation sites and some practical advises,” 66th World Foundry, 2004.
[20] 黃立仁, 黃立伍, and 施登士, “鐵水成份損失對機械性質和微結構影響之研究,” 鑄工季刊, pp. 35-50, 22-Sep-1999.
[21] J. Hemanth and K. Rao, “Effect of cooling rate on eutectic cell count, grain size, microstructure, and ultimate tensile strength of hypoeutectic cast iron,” J. of Materi Eng and Perform, vol. 8, no. 4, pp. 417–423, Aug. 1999.
[22] D. Holmgren and I. L. Svensson, “Thermal conductivity–structure relationships in grey cast iron,” International Journal of Cast Metals Research, vol. 18, no. 6, pp. 321–330, Dec. 2005.
[23] 栗. 熊. 勉. 鬼. 正. 秋. 憲. 宏, “ブレーキ鳴きと振動を抑えたディスクロータ材の開発,” 鋳造工学, 1999.
[24] A. S. F. Metals, Casting design handbook. 1962.
[25] 黃立仁陳查宗, “薄灰口鐵鑄件的流路設計,” 鑄造月刊, pp. 13-25,
27-Jan-1996.

指導教授

施登士(Teng-shih Shih)

審核日期

2015-7-21

推文