Aluminium casting cutter recommendations...

[?Mark]

Currently using Mitsubishi 1.000 bxd 4000 cutter.

Having a bit of a problem with tool life on this material.

It's VERY sandy, inconsistent and has a lot of "air" pockets in it.

In order to have fairly decent tool life had to slow down on sfm to about 1200 and .010 cpt.

Doing a bunch of facing, ramping, pocketing and helix bore with it.

I'm thinking the inserts are too sharp for this crap...

 

Any thoughts?

Mark

[crazy^millman]

Yeah sound about right Need to look to a SS insert still has the Postive rake, but the coating is going to help tool life. The sand is always going to work against you. Might even look to a mist to help keep the thermal shock out of the insert and see if that helps your tool life.

 

HTH

[Bruce Caulley]

Iscar do a polished and coated insert IC928 for their helialu cutters. Toollife seems to be pretty good in cast ally. For finish facing or floor finishing a PCD insert is the only way to go. If you need to finish walls then a PCD coated 45deg helix solid carbide will do the trick. These tools will be pricey, but life expectancy is very high.

 

Bruce

 

BTW, sand will be a killer no matter what.

[monty]

Hi Mark,

I had a simillar problem and best results I got were from sandvik cast iron grades uncoated P10A K10 OR pvd coated P20A K15.

I know it sounds wierd.

[?Mark]

quote:

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The sand is always going to work against you

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Yeah, you both are right.

I'm basically doing a roughing lathe job on a mill here leaving .05 stock all over on a stator casting similar to this one... torque convertor

 

[?Mark]

quote:

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cast iron grades

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Thanks, I'll check that out also.

[elbro]

This is what i would be using on aluminum castings.

 

Link

[Tinny]

I cant rate Sankviks R790 range highly enough. They have always been the mutts nutts for me.