Hi everyone,

This is my first post but I have been following this forum for a long time and I always found helpful topics.
Thanks to everyone for this. 

I need your help about one issue that's why I'm writing. Recently we have a pit problem on the plasma coating that we see after grinding operation.
We use F4MB-XL gun and 81vfns powder. We don't see it on all the parts but it occurs sometimes. What can be the reason for this? I also added some photos for the pits that we encounter. We have some doubts about the gun spare parts but even we changed the newly we still see after changing.

Hello all,

I wonder if anyone has experience coating plate rolling machines' rollers. A company uses a plate roller to form a cylindrical shape of aluminium sheets, and as the roller has some scratch marks due to wear over time, those scratch marks leave unwanted stains on the aluminium sheets. What would you suggest to me? I thought applying 2 mm metcoloy 2 coating those rollers would be enough. As the machine is the core element of their production line company hesitated to apply a coating and consider using it the way it is.

I do not have any info about the machine yet but to my best knowledge, the roller material is 1050 steel with a 500mm diameter.

Thank you all in advance

Hi everyone,

I'm developping the NiCrBSi coating with DJ-2600 gun, and I met one problem with the air cap in the gun.

After sevelal passes, there deposited much coating on the surface on of air cap like below.  
https://i.postimg.cc/d3KvKpMH/2022121174346909.png

Parameters are: H2 600NLPM, O2 200NLPM, Shroud gas 300NLPM

Could U help me?

Hi All

Is there any reference for a good spare parts supplier for Oerlikon Sinplex Pro 90 gun .
I am in need of Neutrode Stack assembly .

Regards
DMan

Hi all

I have observed an increase in Plasma Gun voltage from 78 to 85 volts of late in our Sinplex Pro Oerlikon.
Took all the correctives ( Nozzle/electrode/Neutrode/Anode/Cathode Power hose /New Manifolds/Change of Ar/H2 batches to higer purity ) but things dont work out . We caliberate our Plasma gun every year.

Can someone guide me on any other factors I can look at.

Warm Regards
DMan

Hi, any hint where to buy second hand complete Plasma spray system < 100 kW?
Primarily from europe.

Thanks a lot for any info

Hello,

Has anybody seen the same damage (images attached) on 3MB Ar distribution ring? If yes, what was the cause?

Thank you.

Attached Files

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Hi, We are facing cracking issues on the HVOF coating, below are some basic info:

Hello everyone,

Can anybody please share starting or working parameters for Amdry 995C spraying with 3MBTD?

Thank you.

Hello All,
We are facing some issues on tungsten carbide coated parts sprayed using HVOF Powder Coating and after grinding the area with diamond wheel, we are observing patches in Liquid Penetrant Test. can you all suggest me that, what's the problem behind this, like its a coating problem or grinding problem. Please do share your thoughts as well, with your answers.

Regards,
Ajay