http://www.gordonengland.co.uk/sef/ Thu, 11 Mar 2010 17:01:02 +0000 MyBB http://www.gordonengland.co.uk/sef/showthread.php?tid=1047 Thu, 11 Mar 2010 09:15:30 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1047
I had a query regarding Nickel Aluminide Coating on Platinum.

We need a ceramic coating on the platinum component to reduce its material loss. As per standard procedures a ceramic coating like alumina will require Ni-Al or Ni-Cr bond coat.

however, the client from his previous experience belives that Nickel and Aluminium react with Platinum at higher temperatures causing it to melt before BP. He is not very sure about it though.

I wanted to know if

1. Ni-5Al would actually react with platinum at high temperatures (1000-1200C)?

2. Would the coating fail if we donot apply the bond coat? the component is not exposed to any abrasion or any other relative action but the operating temperature is around 1000C.

I appreciate your inputs..

Regards

K09]]>
I had a query regarding Nickel Aluminide Coating on Platinum.

We need a ceramic coating on the platinum component to reduce its material loss. As per standard procedures a ceramic coating like alumina will require Ni-Al or Ni-Cr bond coat.

however, the client from his previous experience belives that Nickel and Aluminium react with Platinum at higher temperatures causing it to melt before BP. He is not very sure about it though.

I wanted to know if

1. Ni-5Al would actually react with platinum at high temperatures (1000-1200C)?

2. Would the coating fail if we donot apply the bond coat? the component is not exposed to any abrasion or any other relative action but the operating temperature is around 1000C.

I appreciate your inputs..

Regards

K09]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1046 Wed, 10 Mar 2010 12:38:33 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1046
I'm looking to see if there are any complete thermal spray systems on the market. I need everything; booth, extraction, heat exchanger and chiller, power supply, control units, powder feed system, robot and controller. I would probably need a large grit blaster as well.

The system needs to be automated (via robot control) and capable of spraying APS (3MB/9MB) and flame (6P-II/5P).

If anyone has a complete system or a substantial part of one I would very interested to hear from you.

Thanks,
Jim]]>
I'm looking to see if there are any complete thermal spray systems on the market. I need everything; booth, extraction, heat exchanger and chiller, power supply, control units, powder feed system, robot and controller. I would probably need a large grit blaster as well.

The system needs to be automated (via robot control) and capable of spraying APS (3MB/9MB) and flame (6P-II/5P).

If anyone has a complete system or a substantial part of one I would very interested to hear from you.

Thanks,
Jim]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1045 Tue, 09 Mar 2010 06:05:23 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1045
Thanks in advance
Himanshu]]>
Thanks in advance
Himanshu]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1044 Tue, 09 Mar 2010 00:14:58 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1044 I would like to have a better understanding of the relationship between amps and 2ndry gas changes to increase or decrease voltage. Is one option more prefered/desireable and under what circumstance would you choose one over the other. Thanks

Bigals]]> I would like to have a better understanding of the relationship between amps and 2ndry gas changes to increase or decrease voltage. Is one option more prefered/desireable and under what circumstance would you choose one over the other. Thanks

Bigals]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1041 Thu, 04 Mar 2010 02:01:23 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1041
Thanks]]>
Thanks]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1039 Wed, 03 Mar 2010 08:25:12 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1039
The part which it was cold-plated by NiCrBSi powder and has about % 30 porosity. We think that heating the cold-plated part in the furnace.
- What can we do decrease of porosity on the cold-plated part?
- What can we use furnace atmosphere for heating cold plated part?

Kind Regards]]>
The part which it was cold-plated by NiCrBSi powder and has about % 30 porosity. We think that heating the cold-plated part in the furnace.
- What can we do decrease of porosity on the cold-plated part?
- What can we use furnace atmosphere for heating cold plated part?

Kind Regards]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1038 Tue, 02 Mar 2010 10:27:30 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1038
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Thanks for any comments you may have.]]>
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Thanks for any comments you may have.]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1036 Thu, 25 Feb 2010 10:39:03 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1036
I am a beginner in a thermal spray field, have serviced in a roll manufacturing company.
I got a question and wonder if anyone can help.
I am doing a job and need to find a way to work Cr3C2-20NiCr thermal spray with GTV K2 HVOF gun after grinding fluted roll.
The roll is hollow bar same as tube shape, out dia 320mm.
Flute's height is about 2.5 to 4.8mm, several kinds of small module teeth.

I cannot to seem to think of any way during thermal spray to prevent lamination in the coating layer on side wall and bottom of flutes.
There are little difference, lamination is located in middle of coating layer on the side wall.
And that is located between substrate and coating layer.
So coating layer is not dense.
Maybe there are much residual stress by rapid cooling both of layers in my guess.
But top of the flutes have adequate coating layer, HV0.2 1030-1100 level.

The coating condition is same as belows.
powder size : +30-10 micro m
oxygen flow : 910 lpm
kerosene : 22.5 lph
substrate preheating : around 30℃ (one pass by HVOF gun)
powder feed : 70g/min
pass : 5 pass
distance : 280mm
coating thickness : top- 50/60 micro m, side wall- 38/46 micro m, bottom- 121/131 micro m

I was wondering if anyone can give any comments or other suggestion.
However I am not sure of the working principle and need help cause I might have to build it.

Thanks a lot

Simon

kimsimon@empas.com]]>
I am a beginner in a thermal spray field, have serviced in a roll manufacturing company.
I got a question and wonder if anyone can help.
I am doing a job and need to find a way to work Cr3C2-20NiCr thermal spray with GTV K2 HVOF gun after grinding fluted roll.
The roll is hollow bar same as tube shape, out dia 320mm.
Flute's height is about 2.5 to 4.8mm, several kinds of small module teeth.

I cannot to seem to think of any way during thermal spray to prevent lamination in the coating layer on side wall and bottom of flutes.
There are little difference, lamination is located in middle of coating layer on the side wall.
And that is located between substrate and coating layer.
So coating layer is not dense.
Maybe there are much residual stress by rapid cooling both of layers in my guess.
But top of the flutes have adequate coating layer, HV0.2 1030-1100 level.

The coating condition is same as belows.
powder size : +30-10 micro m
oxygen flow : 910 lpm
kerosene : 22.5 lph
substrate preheating : around 30℃ (one pass by HVOF gun)
powder feed : 70g/min
pass : 5 pass
distance : 280mm
coating thickness : top- 50/60 micro m, side wall- 38/46 micro m, bottom- 121/131 micro m

I was wondering if anyone can give any comments or other suggestion.
However I am not sure of the working principle and need help cause I might have to build it.

Thanks a lot

Simon

kimsimon@empas.com]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1035 Mon, 22 Feb 2010 01:13:55 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1035
Questions on an application in an Electrolytic Galvanizing Line Plant (EGL).

Component Name: Conductor Roll (diameter 600 mm, face length 4000 mm)

Roll has a coating or cladding of copper on the outside diameter (at least 10 mm thick) for conducting electricity during the plating process.

The top layer (over the Copper) is typically Chrome plating (web search shows this is often replaced with an HVOF coating)

My big question: Other than copper plating the roll, is there a Thermal Spray or Welding method and material that will satisfactorily replace the copper. I am directing this question to those of you out there who have experimented, and understand the function of the roll, and know the degree of purity of the copper cladding required. Thank you in advance for you help.]]>
Questions on an application in an Electrolytic Galvanizing Line Plant (EGL).

Component Name: Conductor Roll (diameter 600 mm, face length 4000 mm)

Roll has a coating or cladding of copper on the outside diameter (at least 10 mm thick) for conducting electricity during the plating process.

The top layer (over the Copper) is typically Chrome plating (web search shows this is often replaced with an HVOF coating)

My big question: Other than copper plating the roll, is there a Thermal Spray or Welding method and material that will satisfactorily replace the copper. I am directing this question to those of you out there who have experimented, and understand the function of the roll, and know the degree of purity of the copper cladding required. Thank you in advance for you help.]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1034 Wed, 17 Feb 2010 19:52:53 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1034
I want to make a coating of Corundum or Aluminium oxide granules on stainless steel. Which process should be best for this in terms of cost & effeciency? The resulted product is Nail File and will be used to file nails. Can someone help me in that?

Thanks
Fadi]]>
I want to make a coating of Corundum or Aluminium oxide granules on stainless steel. Which process should be best for this in terms of cost & effeciency? The resulted product is Nail File and will be used to file nails. Can someone help me in that?

Thanks
Fadi]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1033 Wed, 17 Feb 2010 02:57:01 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1033
Help me Please, as the time I left I swapped out the 9MP with a different unit to eliminate it from being the cause of the problem.

I am getting desperate, any thoughts would be appreciated.]]>
Help me Please, as the time I left I swapped out the 9MP with a different unit to eliminate it from being the cause of the problem.

I am getting desperate, any thoughts would be appreciated.]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1032 Fri, 12 Feb 2010 02:57:55 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1032
Thanks for your help.]]>
Thanks for your help.]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1031 Tue, 09 Feb 2010 00:52:17 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1031
Anyone can advise how to determine the robotic arm speed on the flat panel without rotation? Currently I am mostly dealing with cylindrical components, thus there is no problem to determine the RPM and transverse speed. However I wish to know what happen to the flat surface with 'step spraying', how should the speed like? How does it correlate to the OEM recommended surface speed, i.e. 75m/min, to achieve the desire coating properties?

Thank You
Ykang]]>
Anyone can advise how to determine the robotic arm speed on the flat panel without rotation? Currently I am mostly dealing with cylindrical components, thus there is no problem to determine the RPM and transverse speed. However I wish to know what happen to the flat surface with 'step spraying', how should the speed like? How does it correlate to the OEM recommended surface speed, i.e. 75m/min, to achieve the desire coating properties?

Thank You
Ykang]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1030 Mon, 08 Feb 2010 22:19:01 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1030
Is there anybody using the cold spray on this site? What it would be your overall feed-back about it? How expensive is the equipment and the running costs compared with HVOF?
Is there somebody spraying Ti for example with cold spray? How does it work? Thank you for your input!

Best regards,
Florin]]>
Is there anybody using the cold spray on this site? What it would be your overall feed-back about it? How expensive is the equipment and the running costs compared with HVOF?
Is there somebody spraying Ti for example with cold spray? How does it work? Thank you for your input!

Best regards,
Florin]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1029 Mon, 08 Feb 2010 09:59:19 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1029
I have interphase problems in spraying AMDRY 500F to Ti substrate. I have tried different grit blasting parameters to enhance surface properties and spray parameters to accelerate the splats to have better adhesion. Still the interphase has some oxide stringers and delamination. Can you please advise?

9MB Gun
732 nozzle
process gass: Ar/H2
Coating material: Cu-Ni-In (Fine)]]>
I have interphase problems in spraying AMDRY 500F to Ti substrate. I have tried different grit blasting parameters to enhance surface properties and spray parameters to accelerate the splats to have better adhesion. Still the interphase has some oxide stringers and delamination. Can you please advise?

9MB Gun
732 nozzle
process gass: Ar/H2
Coating material: Cu-Ni-In (Fine)]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1028 Sat, 06 Feb 2010 07:19:32 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1028
Pump Shaft Dia.45 mm x 6000 mm length.
Base Material : Nitronic50
Application with ethylene pure & working temp should be around -100°C

Help identify material & process to be use with data above.

Thanks!!

PPK]]>
Pump Shaft Dia.45 mm x 6000 mm length.
Base Material : Nitronic50
Application with ethylene pure & working temp should be around -100°C

Help identify material & process to be use with data above.

Thanks!!

PPK]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1027 Fri, 05 Feb 2010 11:44:02 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1027
Best regards,

Jens Ekelund]]>
Best regards,

Jens Ekelund]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1026 Thu, 04 Feb 2010 13:37:33 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1026
I need urgent assistance.

We quoted a job for a customer on which they supplied us with limited information.

They required us to blast and aluminuim flame spray steel pipes.

After site setup was done they supplied us with a document containing their requirements. The specification calls for Arc spray, adhesion of 1000 to 2000 psi, surface profile 75-125. The data sheet we have on the aluminuim wire says that flame spray application will achieve up to 800 psi. How do I go about improving the adhesion of the coating ? Will heating the steel help allot or will a courser profile do the trick ?

Thanks]]>
I need urgent assistance.

We quoted a job for a customer on which they supplied us with limited information.

They required us to blast and aluminuim flame spray steel pipes.

After site setup was done they supplied us with a document containing their requirements. The specification calls for Arc spray, adhesion of 1000 to 2000 psi, surface profile 75-125. The data sheet we have on the aluminuim wire says that flame spray application will achieve up to 800 psi. How do I go about improving the adhesion of the coating ? Will heating the steel help allot or will a courser profile do the trick ?

Thanks]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1025 Tue, 02 Feb 2010 21:10:24 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1025
The project is field application and TONS of square footage.

The ideal system can support guns that are as far as possible from the fuel source yet still generate densely packed splats and generous spray pattern (thousands of square feet one inch at a time is not reasonable).

Is anyone aware of equipment available for purchase that is suited for this application? UniqueCoat seems to have a solution that might work, but many of the HVAF/Arc systems out there are young and don't have much track record to judge by. It seems that many of the companies that have developed this technology to a point where it works have labeled it proprietary and kept it off of the market.

Help!]]>
The project is field application and TONS of square footage.

The ideal system can support guns that are as far as possible from the fuel source yet still generate densely packed splats and generous spray pattern (thousands of square feet one inch at a time is not reasonable).

Is anyone aware of equipment available for purchase that is suited for this application? UniqueCoat seems to have a solution that might work, but many of the HVAF/Arc systems out there are young and don't have much track record to judge by. It seems that many of the companies that have developed this technology to a point where it works have labeled it proprietary and kept it off of the market.

Help!]]> http://www.gordonengland.co.uk/sef/showthread.php?tid=1023 Thu, 28 Jan 2010 17:48:06 +0000 http://www.gordonengland.co.uk/sef/showthread.php?tid=1023
Does anyone have a manual for TAFA 8830 (8835) ?

Ion]]>
Does anyone have a manual for TAFA 8830 (8835) ?

Ion]]>