Hi all,

We use powder which is between 18-30 HRC, hardfacing for the glass industry. In our process we use fusewelder torch. But we have some problems about our application. These problems are:

- especially 22 HRC powder, the 1st lay make some bubbles in the deposit.
- the 2nd lay makes some sparkling appear
- the 3rd lay does not make appear anything, finally bubbles in the inner cord.
- light sparkles when we pass on the cord without powder.
- some black dirts appear on higher thicknesses

We are experiencing the same problems in other powders. Are we in trouble with the powder or our process?

Hello my name is Robert, I am a student at Loughborough university currently working with a filtration company to improve filtration efficiency and extend the longevity of Woven wire mesh Stainless Steel filters in a range of applications but particularly protection from harsh corrosive chemicals (e.g. chlorides, acids).

I have read a number of threads and there apears to be some real experts who post here.

Corrosion in these harsh enviroments seems to be unavoidable without a protective barrier (coating).

My current research has yielded a number of possible coatings however the thickness of coating required appears to be an issue as the aperture of the mesh must have the minimal reduction in size possible.

My query is what coatings can people suggest which can be applied in thin coatings to protect the Stainless Steel from harsh corrosive chemicals such as chlorides and acids?

Current research has sugested the Fluoropolymer family (mainly PTFE), SiO2, TiN, Aluminium, TiO2, ZnO (not using the photocatalytic property) etc.

Any opinions on the above coatings and other ideas to solve this corrosion problem would be much appreciated.

Thank you

Robert

Hello
I want to buy a 2nd hand Metco 9m APS System with Metco ar2000 robot.
someone told me that Metco ar2000 have some problem in programming and metco has stopped using of this robat.
do you confirm this?
thank you

Hello
To Install TBC coatings on gas turbine liner and transition piece we use MCrAlY Coatings with APS and HVOF Systems.
Can I use HVAF to Install MCrAlY Coatings?
Thank you

I want to spray on Carbon(graphite) or Fiber Reinforced Polymers ,how can i do? if i need to blast at first? thanks!

Hi all,
We are studying Metco Amdry 2010 powder.
We have question about the Melting, unmelted AlSi material after spraying.
How did the melting, unmelted AlSi material happen?

Thanks,
Best regards,
William

Hi all,
I am new to this forum also new to ASP,I work for a company which
uses the suzler metco spray system to repair the coating of the gas turbine engine.

There is a problem for me.we use the F4 gun for plasma.Owing to there are about 100 different engine's parts to repair and the shape of the parts are definitely not same.Some parts,e.g.small one .may could not use the gun to spray on it at 90 degree.(may at the range of 30-90 degree.)

I wonder if it is do have a bad effects to the coating? Or some suggestion to solve the angle problem.(buy other type of gun?)
With thanks and regards.
Sam xu

Hi,every one ,
if anyone kown these questions?
1) If the particle finer uesing in the thermal spraying system, the more rough the final as-deposited coating?

2) ,if the more rough in the surface of coating after corrosion,the worse of its corrosion resistance?

Thanks for any help and answer.

Hello to all i am a student of software engineering and this is my second semester before doing this i triied a lot to get the admission in the any other engineering Civil Mechanical or Chemical but i didnt got the admission in any one of them now many of my fellows are doing those engineering and im doing Software engineerin so here i have the question that is my kind of engineering is better than that or not..?

Please suggest if there is any approval/standard accredating organization for HVOF/PTA coating for ball valves and gate valves