Welding of copper alloy E-CuAl-A2

[Amit Mavai]

Good Morning All.
 Dear all i have a quarry regarding weld overlay of brass on on carbon steel.
I did the weld overlay of E-CuAl A2 electrode on carbon steel forging by process SMAW. As the electrode used was 3.15mm , all the parameters were set i.e current was 110Amp & voltage was 22, travel speed was normal.
After welding i faced a problem that i found huge porosity in the weld bead after grind. I tried all the efforts to remove the porosity but it fails to find the root cause.
So this is request to all of you kindly suggest me for smooth and fine weld.
 

[Vanchinath S.A.]

Try to weld with Gtaw process instead of Smaw to overcome porosity problem.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/bd963d8b-ccf4-4568-a6e4-116b01a83562%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Mohamed Elsahhar]

Dear friend,

Tray to pre cleaning for surface of work piece before welding. Can you tray the same welding process on new sample of carbon steel (separate one new one) . Tray it may be surface have contamination making this porosity .

Keep in contact 

M.elsahhar

QA/QC Engineer

002 01220 938021

--

[Kannayeram Gnanapandithan]

Proper cleaning, keep electrode in dry condition, keep short arc, proper preheat. Slight peening to be done

On 16-Apr-2017 11:58 AM, "Mohamed Elsahhar" <mohamed.el...@gmail.com> wrote:

This message is eligible for Automatic Cleanup! (mohamed.elsahhar2000@gmail.com) Add cleanup rule | More info

Dear friend,

Tray to pre cleaning for surface of work piece before welding. Can you tray the same welding process on new sample of carbon steel (separate one new one) . Tray it may be surface have contamination making this porosity .

Keep in contact 

M.elsahhar

QA/QC Engineer

002 01220 938021

On Apr 14, 2017 2:25 PM, "Amit Mavai" <mava...@gmail.com> wrote:

--

http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/bd963d8b-ccf4-4568-a6e4-116b01a83562%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CADGm7%3Dx12mZXVxfW6NnJn9Savop2ZU6KXO6HBtHsa7%3D0upt1uQ%40mail.gmail.com.

[Prakash Hegde]

Hi!

Just to share My experience with CuAl-A2 Al Bronze overlay

I) In multiple layers of Al Bronze cracks/gives lot of porosity  and particularly after machining the surface Al Bronze have high hardness  and in multiple weld  layers it cracks (

ii) This is causing mainly due to higher Aluminum in electrodes therefore with SMAW process compared to GTAW 

ii)For multiple  layers Preferably use barrier layer of soft weld try with CuNiAl type

iii) Use GTAW process 

With all other good engg practices you should be able to overcome the problem

Regards

Hegde

On Sunday, 16 April 2017 4:01 PM, Kannayeram Gnanapandithan <kgpan...@gmail.com> wrote:

Proper cleaning, keep electrode in dry condition, keep short arc, proper preheat. Slight peening to be done

On 16-Apr-2017 11:58 AM, "Mohamed Elsahhar" <mohamed.el...@gmail.com> wrote:

This message is eligible for Automatic Cleanup! (mohamed.elsahhar2000@gmail. com) Add cleanup rule | More info

To view this discussion on the web visit https://groups.google.com/d/ msgid/materials-welding/ CADGm7% 3Dx12mZXVxfW6NnJn9Savop2ZU6KXO 6HBtHsa7%3D0upt1uQ%40mail. gmail.com.

For more options, visit https://groups.google.com/d/ optout.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.

To unsubscribe from this group and stop receiving emails from it, send an email to materials-weld...@googlegroups.com.
To post to this group, send email to material...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4eNVgdu_%2B%3D9j43Kj5%2Bb2Q3TMwAOsqF_E3TvKG0abp2QWvg%40mail.gmail.com.