7075-01 forging

[tonypitzer1@abxair]

Does anybody have any expirience machining this stuff, we have cut it before but have had alot of trouble with it bowing.

Any ideas would be helpful.

Thanks in advance

[RandleXX]

Roughing everything first helps alot..

 

rough, flip, rough, semi finish, flip semi-finish, finish, flip finish..

[Guest CNC Apps Guy 1]

Potatoe Chips come to mind when I hear the words 7075 and forged in the same sentence.

 

Whast Randle said. You can guarantee it will take you 4x more flips than you think it should. If you need to hold a tight flatness callout... you can probably add a skim on each side pass to what Randle said.

 

Have fun... :waving:

[dolphin1]

+1 for what Randle said, there is a lot of stress from the forging process.

[Newbeeee™]

there's gunna be a lot of stress machining it if flatness is required...

[Mic6]

My head is hurting just thinking about it...

[maestro]

Just had 5 big jobs here. 7075 hand forged blocks, some weighing as much as 1100 lbs. Parts weigh about 12 lbs finished. 1st 4 went pretty well, not too much trouble with part movement. The last one has turned out to be a nightmare. It has turned as James calls it, a potato chip. Sometimes things just don't go the way managers want them to.

[TheePres]

in -01 condition its pretty soft material. Specs usually call out semi rough to within .25 then HT to final condition..if this is case with you DEMAND Gylcol Quenching. This helps alot with stress.

[tonypitzer1@abxair]

Thanks everyone, can't wait to gat back to work tomorrow(lol).

I think I'm starting to dislike airplanes!!!!!