Effect of heat treatment and batch-to-batch material variations on microstructure of C38 steel
Typ
Examensarbete på grundnivå
Program
Maskinteknik 180 hp (högskoleingenjör)
Publicerad
Författare
Xia, Jinlu
Addo, Suleyman
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Despite steels from different manufacturers abiding by the same standard specifications,
tool wear during grinding of these materials seems to progress differently when
comparing batch to batch. Therefore, an investigation was made into the different
batches in order to explain this difference in grindability between them. Samples of
C38 steel from two different batches were used and heat treated in the same way at
three different temperatures. The techniques used in this investigation to assess the
difference between batches were light optical microscopy as well as hardness testing.
Some differences were observed between the batches before heat treatment but
after the heat treatment had been performed there were no differences that could
be discerned with an optical microscopy. The hardness tests showed a very small
difference where one batch was harder by a maximum of 10 HV. With the tools used
in this lab no differences that could lead to a variation in grindability was found.
To further investigate the question, more tests need to be run.
Beskrivning
Ämne/nyckelord
steel , heat treatment , quenching , microstructure