Kennametal Tools

[Odell]

Does anyone else out there use Kennametal mill 1 tooling? If so ... are you having any issues with them? I machine a lot of D-2 / S-7 type of tools steel and about a year ago we purchased about 5k of Kennametal tooling. All the ball nose tools work very well but every now and then the end mills seem to have a melt down problem even when using the speed and feed charts out of the book. If anyone machines these type of steels, what brand of tooling are you having success with?

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www.fraisausa.com

 

They work great.

[dolphin1]

were using the newest mill 1-10 with real good luck. we also use the mill 1-18 with good luck. are you using the newest k30 grade.

[Odell]

The inserts I am using are the KC750M. Normally everything cuts like a dream but now and then it seems the tools just come apart. I am wondering if I am getting a bad batch of tool steel. I have come across some material with hard spot in it. Last year I found a file in the middle of a piece of D-2 and a spark plug inside a piece of 4140.

[Odell]

OOOOPS....KC725M inserts...........

[jeff]

quote:

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Last year I found a file in the middle of a piece of D-2 and a spark plug inside a piece of 4140.

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Wow, where do you buy your steel from?

[Odell]

I"m thinking our purchasing dep. got some of that stuff from Value City ......

[moeh]

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Last year I found a file in the middle of a piece of D-2 and a spark plug inside a piece of 4140.

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That would make some cool pics - did you take any?

[Odell]

No, I didn't take any pics but I should have. We had one of our guys use an old shapper machine to uncover what was in the steel.

[Mr. M]

Wow!!

I can't say I've heard that before!

That steel is a real value ain't it

Can you get certs with it

[workmantm]

I've found that the KC935M grade inserts run better than the KC725M for us. We are running it in 15-5PH and 4340 that are HT to around RC36-39. Don't do tooling steel here, but that might help with your tool life. Those inserts also run faster dry than the KC725M.

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Years ago I ran across a bearing race in a big chunk of HRS 1018....never seen a file or spark plug though LOL

Thats hilarious. I would definately change vendors

[dolphin1]

we used to see all kinds of stuff in the steel castings from mexico 15 yrs ago. ball bearings and all the stuff mentioned. thats when i learned about insert drills compared to hss.

 

and yes run the inserts dry for best life.