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MICROSTRUCTURE
I I
Fine Spheroidal
I I I
Chromium carbide Primary Carbide angular tungsten
rich alloy carbides
DESCRIPTION
Hardened and tempered tool steel. Matrix is tempered martensite with
fine spheroidal chromium rich carbides with angular tungsten rich alloy carbides.
Many primary carbides are noticed indicating inadequate prior forge reduction.
Etchant Components Concentration Etching Time
Ethanol 97ml Nita I 1-2 minutes
Nitric acid 3ml
www.spectrographic.co.uk
en C. CL) ....... en
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PREPARATION
Surface
SiC Paper
SiC Paper
SiC Paper
SiC Paper
Velvet Cloth
Micro Cloth
SECTIONING :
Abrasive cutter: Metcut Series
Cut off wheel: AAA Hard Steel Wheels
MOUNTING:
Mounting Press: OmegaPress 2
Mounting Resin: Phenolic Resin Black
GRINDING:
Planarizing Grinder: OmegaBelt
Grinding Belt: Alumina Belt 80
POLISHING:
Grinder - Polisher: OmegaPol Auto
Abrasive Lubricant
P180 grit Demin Water
P320 grit Demin Water
P600 grit Demin Water
P1200 grit Demin Water
3 micron Waterbased Diamond slurry
-
c "C
"C Q)
Q) Q)
:[ i.g_ � c..� Q) <J) a.. en a.. Relative Motion e Q) u 0:::: �o:::: 0 E <J)
F 0 Q)
45 3 400 75 Clockwise (same direction)
45 3 400 75 Clockwise (same direction)
45 2 400 75 Clockwise (same direction)
45 2 400 75 Clockwise (same direction)
30 3 250 60 Clockwise (same direction)
30 3 250 60 Clockwise (same direction)
Spectrographic LtdUnit 51Tong park Industrial EstateOtley RoadBaildonBD17 7QD
Tel 01274 966173www.spectrographic.co.uk
1 micron Diamond slurry