Ultra Finishing Essay

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Introduction of AFM

Precision and Ultra finishing process represents a critical and expensive phase of the overall production process. Manufacturing of precision parts consists a stage of final finishing operation. It is mostly uncontrollable, labour intensive and frequently involves a reasonable part of the total manufacturing cost. The functional properties such as wear resistance and power loss due to friction are influenced by surface roughness of the matching parts [1, 3].

To counter the problems such as high direct labour cost and to produce finished precision parts with specific features for finishing inaccessible areas, abrasive finishing techniques are developed. Abrasive finishing process is carried with large number of cutting edges which have indefinite orientation and geometry. Abrasive fine process are commonly employed due to their capacity of finishing various geometries of form (i.e. Flat, round etc.) with desired dimensional accuracies and surface finish [1, 6].

1.1 OVERVIEW OF TRADITIONAL FINISHING PROCESS:

Before discussing advanced finishing process, it is beneficial to understand the material removal mechanism commonly adapted in …show more content…

AFM can be regarded as a process of generating a self –formingly tool that correctly removes the workpiece material and finishes those areas which are restricted to the medium flow. AFM technique is used for deburring, edge contouring and surface finishing. It is capable of finishing regions which are difficult to reach by flowing abrasive by mixing with polymer of special rheological properties. AFM produces uniform, repeatable and predictable results on a notable range of finishing operation. Normally the properties of carrier in AFM process play an important role. They should be visco-elastic and non-sticky in nature. Aluminium Oxide, Silicon Carbide, Boron Carbide and Diamond are commonly used abrasive grains in AFM process

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