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研究生:許文雄
研究生(外文):Xu, Wen-Xiong
論文名稱:改善灰口鑄鐵之切削性的冶金參數研究
論文名稱(外文):Study on mechanical properties of gray iron
指導教授:施登士
指導教授(外文):Shi, Deng-Shi
學位類別:碩士
校院名稱:國立中央大學
系所名稱:機械工程研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:1996
畢業學年度:84
語文別:中文
論文頁數:120
中文關鍵詞:灰口鐵接種劑接種處理冷激值碳當量機械工程工程
外文關鍵詞:gray ironinoculantinoculationchill depthcarbon equivalentMECHANICAL-ENGINEERINGENGINEERING
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ABSTRACTThe chill depth and mechanical properties of gray iron
affected by metallurgical parameters were fully investigated in
this study. The chill specimens were prepared from pouring
molten gray iron into a wedge type of shell core sand.
Specimens for measuring mechanical properties were taken from Y-
block castings. The different amounts of inoculants and their
compositions, carbon equivalent, taping temperature, different
molding sands, holding time, and inoculation method affected
the microstructures of gray irons resulted in varying chill
depths and mechanical properties.Experimental results showed
that a 5% of inoculant addition could fully depress the
formation of chill. At taping temperature of 1410-1510℃
associated with carbon equivalent 4.4%(C:3.6%, Si:1.8%)
resulted in nil chill depth. Inoculants added with Al, Ca, and
Bi composition played an important role to reduce chill value.
If iron (C.E=3.8-4.2%) treated with longer holding time and
poured at higher temperature, serious fading would occur and
resulted in a great chill value. In addition, mechanical
properties of gray irons were dominated by carbon equivalent,
fading time, as well as moisture of green sand. Post-post
inoculation could signification improve the mechanical
properties and reduced the chill values of gray irons.
Keywords: gray iron, inoculant, inoculation, chill depth, carbon
equivalent

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