Modeling
of Carburization Parameters Process for Low Carbon Steel |
This paper
represents the carburization parameters for steel (1020) using
Desirability Function Analysis-DFA. The experiments were
conducted using Taguchi (L9) orthogonal array. Carburization
parameters such as carburization temperature, carburization time
and tempering temperature were optimized by multi - response
considerations depending on micro hardness and were rate
measurements. The optimal carburizing parameters had been
determined by composite desirability value obtained from
desirability function analysis while significant contribution of
parameter was determined by analysis of variance (ANOVA). The
analyses results showed that optimal combination for higher
hardness and lower wear rate were at (A2=920 oC, B2= 3 hours and
C3=120 oC). Confirmation test was also conducted to validate the
test results. Mathematical models for composite desirability,
micro hardness and rate wear were determined. Experimental
results showed that the carburization performance can be
improved effectively through desirability approach. |
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