I just stuck a spool of Silicon Bronze in my new Lincoln Power MIG
255C and am hoping someone might have some experience to answer a few
questions. (My only experience with this type of filler material is
via TIG welding.)

I have a 75 / 25 shielding gas cylinder, but it doesn't seem to matter
if I have it open or closed when using the SB. There is a thin layer
of "soot" coating the weld area after welding, which I simply wire
brush off.

- Am I using the wrong shielding gas?
- Does SB require shielding gas while MIG'ing?
- Anything else I SHOULD know specifically about MIG and SB?

Thanks,

John P.

John P. wrote:

- Am I using the wrong shielding gas?

It should be pure Ar.


Nick
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Thanks for the tip. I just subscribed to that group. Looks like a
good welding resource.

John P.

On 20 Nov 2005 18:02:50 GMT, steamer wrote:

--Try posting to sci.engr.joining.welding

On Sun, 20 Nov 2005 00:18:59 +0100, (Nick Müller)
wrote:

John P. wrote:

- Am I using the wrong shielding gas?

It should be pure Ar.


Nick

Thanks Nick. I'll try it.

John P.

In article ,
John P. wrote:

I just stuck a spool of Silicon Bronze in my new Lincoln Power MIG
255C and am hoping someone might have some experience to answer a few
questions. (My only experience with this type of filler material is
via TIG welding.)

I have a 75 / 25 shielding gas cylinder, but it doesn't seem to matter
if I have it open or closed when using the SB. There is a thin layer
of "soot" coating the weld area after welding, which I simply wire
brush off.

- Am I using the wrong shielding gas?
- Does SB require shielding gas while MIG'ing?
- Anything else I SHOULD know specifically about MIG and SB?

Thanks,

John P.

When using silicon bronze in a MIG you need to use either pure argon or
better an Argon/Helium mix gas.

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