Post welding heat treatment of a nodular iron

Authors

  • David Hernández-Sanamé Universidad de Moa

Keywords:

hypoeutectic casting, thermal cycle, welded joint.

Abstract

The post-welding heat treatment of a welded nodular iron with electrodes E 316L-16 and UTP 65 was performed. Welded samples that were subjected to austenitized heat treatment in a muffle furnace were selected with temperatures of 900 ° C, followed by forced cooling from 780° C to 650° C and then with air cooling reducing the austenite content in the weld foundry matrix. When determining the type of solidification of the nodular cast iron, it was found that it solidifies as a hypoeutectic cast iron; characterized by the carbon content. It was determined that hardness increased from HV 250 to HV 344.5 after applying the thermal welding cycle in the different areas of the welded joint; after austenitized, it had a decrease from HV 344, 5 to HV 230 with electrode E 316L-16 and from HV 324.5 to HV 227.5 in the same areas which demonstrates the residual stresses decreasing in the welded joint. 

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References

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Published

2019-12-12

How to Cite

Hernández-Sanamé, D. (2019). Post welding heat treatment of a nodular iron. Ciencia & Futuro, 9(4), 51–69. Retrieved from https://revista.ismm.edu.cu/index.php/revistacyf/article/view/1870

Issue

Section

Ciencia Universitaria