Thread Forming Aluminum

[Tazzer]

My tool guy brought by some 1/4-20 and 10-24 thread forming taps from OSG. I believe they are TiAN Cobalt Hypro froming taps. My question is do I use the same speeds and feeds as I normally would for a regular tap or are thier special speeds and feeds. I will be cutting 6061 aluminumm .5" to 1" deep. Any help will be greatly appreciated.

[RMARCH]

Use the same speeds and feeds . Just your tap drill size will change.

[little bubba]

Faster, at least double. Thats the beauty, they are FAST, no chips and a stronger thread.

[Tazzer]

Thanks

little bubba what are you doubling

normally I tap 1/4-20 at 183.35 IPM and 3667 RPMs

[l u k e]

Originally Posted by RMARCH Use the same speeds and feeds . Just your tap drill size will change.

I just purchased several thread forming taps but can't find a drill size chart for the taps. Any idea where one mind find that info?

Also, what about an RPM recommendation per tap size?

[RMARCH]

Here is an Awesome site. you can find what you are looking for here :
http://www.carbidedepot.com/resources.htm

[Kevin Taylor]

Great site rmarch lots of stuf without all the fine print to read in machinest handbook .
Tazer are you taping with a ridged tap machine Im old school with a old machine and The RT machines dont realy get up to speed in the short distance in Z so I wonder how fast the tap is realy spining Be interisting to speed gun the spindel and see what it is realy doing Kevin