Machining Hastalloy
Machining Hastalloy
(OP)
I am trying to mill a face on a Hastalloy casting. I am using a 100mm Dia face mill with Taegutec inserts type SEKT 12T3 AFTN-M GRADE TT8020. The problem i am having is the inserts are breaking after a short cutting time. Does anybody have experiance in this type of work.





RE: Machining Hastalloy
http://www.haynesintl.com/pdf/h2010.pdf
RE: Machining Hastalloy
RE: Machining Hastalloy
My direct experience is limited to C-276 wrought material. I have worked in shops that machined Hastalloy X as well. The fact that you are working on castings will probably serve to complicate the issue. I assume this is your first run in with Hastalloy?
The tooling that will give best results depends on many things. Ridgidity of the machine, part and fixturing. Available horsepower, condition of the casting.
I definitely agree with discussing this with Haynes, as suggested by TVP. jbel's advice was sound as well. Definitely bring in a couple of tooling suppliers and run some tests with loaner tools. Hastalloy is a bear. Expect a lot of operator intervention and a lot of consumable usage. DOC notches will quickly break inserts. Vary your DOC and use a large lead angle with the largest radius your set-up will allow. Your tooling supplier is going to love you. Drilling and tapping is a whole other subject. Watch for work hardening. You can destroy a tap trying to get through a work hardened chamfer. Best of luck, I have alot of respect for people who work in this stuff on a regular basis.
RE: Machining Hastalloy
slow the revs
make sure machine has enough power at low revs could be you want to use a smaller cutter so the revs are higher at that cutting speed more torque may be then available.
RE: Machining Hastalloy
There are, or course, different classes of Hastalloy and you will have to talk to your tooling supplier to see if this could work for you.
Regards,
Schlebb
RE: Machining Hastalloy
be touched immediately with no excess heat in it.
RE: Machining Hastalloy
Slow feeds and speeds, as well as small depth of cut or chiploading are the rule of thumb. No matter what type of inserts or tools you use to cut it, it trashes them. We do alot of c2000 at our shop using carbide tools and inserts.
Working with Hastelloy is time consuming tedious work and we have found no way around it. Small peck rates for drilling and reaming holes (especially deep ones) and as soon as a tool starts chattering, CHANGE IT QUICK!!! When estimating cost on a Hastelloy job, make sure you allow a large tooling expense. Hope this helps.
Hammer66
RE: Machining Hastalloy
Good luck.