The effect of material properties variation on clipper cutter life
Abstract
The effect of material properties variation on clipper cutter life onto the cutter that
provided by the Covidien Company were evaluated and compared. The material
and mechanical properties of the Sample A, Sample B and Sample C were
characterized and analyzed using several complementary techniques. Material
properties which are the material composition and microstructure of the samples
were analyzed by using Scanning Electron Microscope (SEM) and Energy
Dispersive X-ray Spectroscopy (EDS). Results show that due to the existing of
the large amount of element Fe, the samples can be classified as steel. With the
present of the 0.9%~1.5% of carbon, the three samples can be also classified as
high carbon steel. It shows that the Sample B is the hardest due the highest
amount of carbon. The other elements, zinc, aluminum and copper that are
observed from the samples increase their hardness, strength and improve the wear
resistance. Mechanical properties were measured using Rockwell Hardness test.
Result shows that the Sample B, 124.9HB is the hardest among three samples.