The classical casting material cast iron is experiencing a renaissance. High strength CGI or alloyed cast iron components are substituting previously used non-ferrous castings in automotive power train applications. The mechanical engineering industry has recognized the value in substituting forged or welded structures with stiff and light-weight cast iron castings. New products such as wind tu...

In this paper we present a brief overview of several techniques used in digital image processing for X-ray testing. The paper introduces the reader to the image processing theory employed in this NDT. Methodologies and principles will be outlined. Some application examples are given when inspecting aluminum castings followed by the limitations of the applicability of the methodologies used.

15-5PH stainless steel castings are key components in fracturing trucks. However, DS-type inclusions can lead to fatigue failure of the material. To elucidate formation mechanism large-size inclusions, evolution, growth, and aggregation during vacuum oxygen decarburization, ladle refining, casting were studied. The results show that with sizes larger than 20 μm CaO–Al2O3–SiO2–MgO–CaS composite ...

Nonconforming, and for their purpose unusable castings, not fulfilling the requirements of the standard and/or with customer agreed delivery conditions represent scrap [1, 2]. Scrap is manifested in foundries as waste in material, energy and labor. its efficient monitoring and supervision is possible only when the quality criteria have been unequivocally established, not only for the final prod...

Abstract Graphitic cast irons are the most important and widely used materials for production of castings. Increasing requirements quality these castings lead to increased demands on control foundry from raw through technological operations finished product. An integral part this process is structural analysis, because properties graphitic depend mainly their structure (on shape, size number pa...

A comprehensive review of fatigue behavior and fatigue design of heavy section wind turbine castings made of ductile iron EN-GJS-400-18-LT is performed. Common metallurgical defects that are affecting fatigue behavior of this material were studied. Review of different researches on quantitative effect of chunky graphite and micro structure on fatigue behavior of EN-GJS-400-18-LT was perform...

Introduction: The aim of this study was to evaluate the effect of bridge orientation in casting machine on castability and quality of base metal castings. Methods: Three groups of patterns with different direction and lengths in casting machine were casted and then studied qualitatively and quantitatively using mean and standard deviation in table of frequency. Results: Larger nodules and poros...