Analyzing the Real Area of Contact Wear Using ANOVA
Journal Title: RECENT - Year 2015, Vol 16, Issue 46
Abstract
Austempering is a relatively new treatment in the field of ductile iron casting. This heat treatment was found to improve the ductile irons at high levels of strength, rendering ductile iron castings superior to steel forgings Austempered ductile irons usually contain a large quantity of retained austenite that can help to optimize their mechanical properties. Many of the properties of austempered ductile iron depend on the austenite which is retained following the bainite reaction. The studied cast iron had the following composition: 3.70 %C; 2.46 %Si; 0.56 %Mn; 0.038 %P; 0.009 %S; 0.25 %Mo; 0.23 %Cu; 0.065 %Mg. This cast iron was elaborated in an induction furnace. Nodular changes were obtained with the "In mold" method, with the help of prealloy FeSiCuMg with 10-16% Mg, added into the reaction chamber in a proportion of 1.1% of the treated cast iron. The structure in raw state is perlito-feritic typical for a cast iron with geometrically regular nodular form. The casted raw iron had the following mechanical properties: Rm = 650 N/mm2, HB = 180; KC = 10 J/cm2; A = 12 %. The paper presents an example of calculation for the one-way repeated measures applied for the results of an austempered ductile iron. This research has a number of objectives which can be started as follows: to calculate the real area variation (Ar) at the end of a bainitic S.G. cast iron wear process, study of the real wear contact values (Ar) variation, depending on the isothermal heat treatment parameters (Tiz and τiz ) and the micro hardness HV0.01 for FN = 4 kgf, the calculation for the one-way repeated measures applied for the results of the real area variation (Ar).
Authors and Affiliations
Ioan MILOŞAN
Keywords
Related Articles
- EP ID EP138382
- DOI -
- Views 93
- Downloads 0
FEM Modelling and Characteristics Research of Cylindrical Journal Bearing for Cone Inertial Crusher / KID-300
This article presents finite element modeling and simulation analysis of vertical cylindrical journal bearing for cone inertial crusher (KID-300). The research is done through changing different technical and constructiv...
Tantalum Based Thin Films Preparation, Structures and Properties
Tantalum based thin solid films have found increased applicability in a wide range of fields, in particular in microelectronic devices, due to their superior properties, caused mainly by their main component and its resp...
Simulation of Pneumatic Directional Valve
There is well known the fact that to design and simulate a system there may be used two methods: mathematical modelling, using dynamics equation of the system, or using oriented software that includes predefined elements...
A Practical Approach to Management, Low Costs or Quality
Nowadays there are private companies that have a timely and efficient logistics organization, but nevertheless can not speak of the actual organizational structure of logistics in these companies. This is explained by th...
Management Methods and Techniques Applicable in Defence Industry
After 1990 the Romanian society has undergone the transition from socialism to capitalism in all economic and social spheres. In addition to others industries, for the defence industry was also necessary the transition f...