rene 41

[dsharpe]

Hi Guys

Does anyone have any experience machining rene 41. The best info I have found so far is that it is "difficult to machine". We have been asked to quote on a job and we are just starting to get scared.

Thanks

Dave

[dsharpe]

P.S.

I should have added that we need to mill and drill it and the smallest cutter will be around .200".

[Scott Bond]

no but;

I did rene 77 ,it was similar to inconel 718

[toolmann]

SFPM FOR CBD END MILLS WILL BE ABOUT 30-60.

FEED WILL BE ABOUT .0005-.001 PER TOOTH ON END MILLS, SMALLER THAN 3/8

60' HELIX WORKS EXCELLENT ON HARD MATERIALS.

COBALT DRILLING IS 10-15 SFPM WITH .002 FEED PER REV. FOR 1/8" DRILL. YOU CAN USE CBD BUT SOMETIMES THEY BREAK DEPENDING ON THE APPLICATION. THESE ARE VERY GOOD STARTING POINTS FOR YOU TO USE.

MACHINABILITY OF THIS MATERIAL IS BETWEEN

15-20%.

ONCE YOU GET STARTED YOU WILL LEARN VERY QUICKLY, DON'T EXPECT TOOLS TO LAST VERY LONG. YOU WILL HAVE TO CHANGE TOOLS VERY OFTEN, AS WE ALL KNOW TIME IS MONEY. IT IS BETTER TO USE MORE TOOLS TO SAVE TIME, THAN TO SAVE COST BY USING LESS TOOLS. ITS BETTER TO MAKE 6 PARTS PER HR., THAN 2 PER HR.

[dsharpe]

Toolmann

What about cutting fluid? It has been suggested that we use neat oil rather that soluble. Since we will be using a machining centre this will be a real pain. Is it really neccessary?

Thanks

Dave

[Guest CNC Apps Guy 1]

I'd go with Hangsterfer's cutting oil. Water soluable/synthetic just doesn't have the lubricity characteristics of cutting oli. But if you gotta use water soluable....... you gotta do what you gotta do. I'd change tools even more frequently using W/S as opposed to Oil.

JMHO

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James M.

Mastercam Enthusiast

[Toby]

I agree with toolman with one addition. If slot-milling it is recommended to use hss cutters with a greatly reduced sfm.

The carb sfm shown above would work best for periphery cutting.

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Toby Baughman

Programming Supervisor

Saint Gobain Semicon Group Inc.

Vs8.1.1 LvL3 Mill + solids