Investigation of the Effect of Microstructures on CGI Machining

• The aim of this investigation is to evaluate the effect of microstructures on CGI machining and to compare to gray iron reference material. Special designed workpieces, to reproduce real situations, were machined in face milling. The project planning was based on factorial analysis of design of experiments. The results showed that the strongest parameter affecting tool life is the pearlite content. Furthermore it is clear that due to imprecision of manufacturing process it is difficult to obtain test specimens with homogenous microstructures and corresponding varying mechanical properties, when the specimen presents a complex geometrical form. Thin sections found in walls tend to have higher nodularity, resulting in spherical graphite. To refine the investigation of the effect of microstructures on CGI machining it would be preferred to use test specimens without holes or slots to minimise noise in the factor analysis.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Produktionsteknik, arbetsvetenskap och ergonomi (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Production Engineering, Human Work Science and Ergonomics (hsv//eng)

Keyword

Microstructure

CGI

face milling

machinability

mechanical properties

section effect

cutting forces

tool wear

Manufacturing engineering

Produktionsteknik

Publication and Content Type

ref (subject category)

kon (subject category)