Methodologies for and Performance of Macro Transport-Transformation Kinetics Modeling of Cast Iron

The article shows the relevance of the use of alloyed cast iron in mining and metallurgical engineering. The article discusses the technologies for producing naturally alloyed cast iron. For working bodies and friction units of mining machines, such as pumps, coal pumps, hydrocyclones, crushers and mills. The main type of wear for them is abrasive. To increase the wear resistance of cast iron the production of cast iron has not been sufficiently studied yet. Although the use of cast iron in a complex alloyed with manganese, silicon, chromium, titanium and vanadium has been studied. The article studies the influence of manganese, titanium and vanadium on the mechanical properties and performance of machine parts and products of mining and metallurgical production in contact with high-temperature and highly abrasive media. The rational content of titanium and vanadium in gray cast irons is established in the range of 0.05-0.1%, which ensures their heat resistance and increases their wear resistance. The content of these elements can be increased to 0.07-0.12%. Bushings made of this cast iron have the required wear resistance and can increase the operational reliability of the equipment in the conditions of mining and metallurgical production. They also replace non-ferrous metals, as well as products obtained by powder metallurgy methods.

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The Properties and Performance of Cast Iron Grinding Media

Mineral Processing and Extractive Metallurgy Review ◽

10.1080/08827509208914215 ◽

1992 ◽

Vol 11 (1-2) ◽

pp. 75-106 ◽

Cited By ~ 10

Author(s):

VATHSALA RAJAGOPAL ◽

IWAO IWASAKI

Keyword(s):

Cast Iron ◽

Grinding Media ◽

And Performance

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Casting and Performance Evaluation of Pump Impeller and Housing using Local Raw Materials

FUOYE Journal of Engineering and Technology ◽

10.46792/fuoyejet.v3i1.86 ◽

2018 ◽

Vol 3 (1) ◽

Author(s):

Bayode J Olorunfemi ◽

Samuel B Adejuyigbe ◽

Adefemi A Adekunle

Keyword(s):

Performance Evaluation ◽

Cast Iron ◽

Raw Materials ◽

Optical Pyrometer ◽

Wood Dust ◽

Pump Impeller ◽

Standard Result ◽

Significant Difference ◽

Grey Cast ◽

And Performance

Casting of pump impeller and its housing was carried out using locally available materials. Performance evaluation was conducted to show if the locally produced pump impeller and its housing could be compared favourably in terms of performances with the imported ones. The sand used for the moulding of the pump housing and impeller was blended in the sand mixer with bentonite, wood dust, water and others as desired in their correct proportions (Bentonite-3.5%, Water 3.5%; Wood dust 4.2%). Pouring of the molten metal unto the assembled mould was done at a temperature of about 1380oC. Portable optical pyrometer was used to measure the temperatures. The charge make ups was 135kg of cast iron scraps, 0.58% FeSi, 0.035% Femn and 0.0045% Inoculants. Replica of the two components were carefully produced in wooden patterns to make the sand mould easy, while the casting was made using grey cast iron because of the need to machine it to its final dimensions with ease. The results obtained from the various test carried out shows no significant difference from the standard result of the imported ones.

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