Engine building mailing list?

[goflo at pacbell.net]

Thanks. Think I'd wanna operate a big one about one county over...

Jack

Jay Wallace wrote:

> HIP = Hot Isostatic Press. Put the material in a sealed furnace and
> apply a gas pressure at elevated temperatures to it in order to
> remove any closed flaws (pores, etc) in the part. Used for things
> like turbine blades where creep deformation has resulted in
> internal cavity formation. The small lab HIP that I use for sinter
> / HIP'ing silicon nitride can go to about 2100 C (3800 F) and 200
> MPa (20,000 psi) in nitrogen or argon.