Third Section Results:
These tests were conducted with our HRC58 and HRC62 A2 tool steel. These samples are "chisel ground" at 30° with no grinding conducted on the back side of the blade. These hardened samples were sharpened with a 180 grit ceramic belt and then deburred.
Each edge was tested at two different points yielding two sets of data for each sample tested. These tests will be of particular interest to our industrial customers who use "skives" for trimming operations. It has been our observation in the past, from customer samples received, that this style of blade usually shows rolling toward the backside of the blade. It was not clear whether this is due to to how the trimmed material is approached or if the geometry of the grind simply lends itself to this behavior. Here is a picture of the samples tested:
As you may recall, the SET tester roller is canted at 10°. This gives us the capability of forcing the roll in a predetermined direction. In this case each test section of the blade was forced in a different direction. In one section, toward the bevel and in the next test section, toward the flat or backside of the blade. We took initial sharpness readings at two locations on each edge and then conducted SET tests on both sections. This was done for both blades producing a total of (4) sets of test results.
Here then are the results of those Phase I tests:
It seems to be clear that skive blades are following the "path of least resistance" when rolling.
These tests were conducted with our HRC58 and HRC62 A2 tool steel. These samples are "chisel ground" at 30° with no grinding conducted on the back side of the blade. These hardened samples were sharpened with a 180 grit ceramic belt and then deburred.
Each edge was tested at two different points yielding two sets of data for each sample tested. These tests will be of particular interest to our industrial customers who use "skives" for trimming operations. It has been our observation in the past, from customer samples received, that this style of blade usually shows rolling toward the backside of the blade. It was not clear whether this is due to to how the trimmed material is approached or if the geometry of the grind simply lends itself to this behavior. Here is a picture of the samples tested:
As you may recall, the SET tester roller is canted at 10°. This gives us the capability of forcing the roll in a predetermined direction. In this case each test section of the blade was forced in a different direction. In one section, toward the bevel and in the next test section, toward the flat or backside of the blade. We took initial sharpness readings at two locations on each edge and then conducted SET tests on both sections. This was done for both blades producing a total of (4) sets of test results.
Here then are the results of those Phase I tests:
It seems to be clear that skive blades are following the "path of least resistance" when rolling.