GX40CrNiSi20.14 surface problem
GX40CrNiSi20.14 surface problem
(OP)
Hello everyone,
I have a problem on my casting surface, which I never experienced before.
Cast material specification is GX25CrNiSi20.14.
In the as cast condition; after machining, a surface appeared like in the picture below.
[url=http://postimg.org/image/5bmlxa2bv/][img=http://s33.postimg.org/5bmlxa2bv/20160603_103018.j...][/url]
[url=http://postimg.org/image/4d68uzozv/][img=http://s33.postimg.org/4d68uzozv/20160606_094311.j...][/url]
[url=http://postimg.org/image/vjo3bsqq3/][img=http://s33.postimg.org/vjo3bsqq3/20160606_094329.j...][/url]
The order is cast in 4 melt charges.
All charges have the same problem.
Melt is prepared in 500kg induction furnace, cast in a cold setting resin mould.
Any comments will be appreciated.
Thanks
I have a problem on my casting surface, which I never experienced before.
Cast material specification is GX25CrNiSi20.14.
In the as cast condition; after machining, a surface appeared like in the picture below.
[url=http://postimg.org/image/5bmlxa2bv/][img=http://s33.postimg.org/5bmlxa2bv/20160603_103018.j...][/url]
[url=http://postimg.org/image/4d68uzozv/][img=http://s33.postimg.org/4d68uzozv/20160606_094311.j...][/url]
[url=http://postimg.org/image/vjo3bsqq3/][img=http://s33.postimg.org/vjo3bsqq3/20160606_094329.j...][/url]
The order is cast in 4 melt charges.
All charges have the same problem.
Melt is prepared in 500kg induction furnace, cast in a cold setting resin mould.
Any comments will be appreciated.
Thanks





RE: GX40CrNiSi20.14 surface problem
"Even,if you are a minority of one, truth is the truth."
Mahatma Gandhi.
RE: GX40CrNiSi20.14 surface problem
RE: GX40CrNiSi20.14 surface problem
RE: GX40CrNiSi20.14 surface problem
Did you try pouring the same casting in a CO2/Sodium silicate system.
"Even,if you are a minority of one, truth is the truth."
Mahatma Gandhi.
RE: GX40CrNiSi20.14 surface problem
I didn't try with sodium silicate system, it doesn't look possible with my current moulding system.
I have some concerns from IPA, now looking for a place with gas chromatography to test IPA.