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Suitable Material for Taper Shank (DIN 69871 or 69893) with Mill (indexable inserts)
Dear TVP Perfect your explanation, but, if I need diferent treatments on the taper shank 56 - 60 HRC, and on the front, were the indexable insert's are, something like 38 - 40 HRC, does the induction hardening reach this hardness on steel 4320?- Matbol
- Post #3
- Forum: Metal and Metallurgy engineering
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Suitable Material for Taper Shank (DIN 69871 or 69893) with Mill (indexable inserts)
Dear Forum Team I made a research about toolholders, specially taper shank's, and the material used for this are Case Hardening Materials, like 8620, 4320, or others, not case hardened, like H13. My question is: what material is better for a combined taper shank, like DIN 69871 or 69893, with a...- Matbol
- Thread
- Replies: 2
- Forum: Metal and Metallurgy engineering
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Hardening AISI 4140 problems
So, let me explain this better. The hardness is 30HRC on the surface of the blank, I really thought I wanna achieve something like 40 - 45 HRC on surface. The guys do something, that results in better hardness, when the hardening oven reach 840ºC, they let this for some 30 min at this...- Matbol
- Post #4
- Forum: Material engineering general discussion
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Hardening AISI 4140 problems
Dear Eng-Tips people We have some problems by hardening/quenching AISI 4140. We do some test with a Ø2" x 3" blank. First we austenitize the material at 840ºC for two hours at this temperature, then this material is quenched in oil, with not agitation. The material reached only 30 HRC. What I...- Matbol
- Thread
- Replies: 8
- Forum: Material engineering general discussion
