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| Microstructure and Mechanical Properties of Nodular Cast Iron Produced by Melted Metal Die Forging Process |
| LI Nan,XING Shu-ming,BAO Pei-wei |
| School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China |
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Abstract The microstructure and mechanical properties of nodular cast iron produced by the melted metal die forging process (MMDF for short) were experimentally researched. The main obtained results are: the nodular cast iron produced by this process can be machined as easy as traditional one only if holding at the remained temperature for 4 h; its strength and plasticity are obviously higher than those of traditional ones; the graphite size arrived at grade 8, and the graphite spheroidizing arrived at grade 1 or 2, but a streamline molded distribution of the graphite slightly appeared. Both of the strength and plasticity increased with the pressure when the pressure holding time was larger than its critical value. A new way to produce high properties nodular cast iron was provided.
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Received: 02 March 2012
Published: 18 June 2013
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Corresponding Authors:
Shu-Ming XING
E-mail: smxing1962@126.com
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2013, Vol. 20 
