surface speed for HVOF coating process
04-26-2019, 04:42 AM,
#1
surface speed for HVOF coating process
hi guys, please help me, what is ideally a surface speed for HVOF coating process, I used the gun dj 2700, fuel propene, I really appreciate her help

Thanks

Gito
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04-26-2019, 12:47 PM,
#2
RE: surface speed for HVOF coating process
(04-26-2019, 04:42 AM)gito Wrote: hi guys, please help me, what is ideally a surface speed for HVOF coating process, I used the gun dj 2700, fuel propene, I really appreciate her help

Thanks

Gito

60-80 M/Min.
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04-28-2019, 06:19 PM,
#3
RE: surface speed for HVOF coating process
Its about surface geometry. If its cylindrical, rotation speed and movement speed must be in balance to keep each layer 5 micrometer or less. Its the most important point. In castolin ds8000 applications we were telling "10000/diameter is your rpm" Its very roughly but works. I remember a member shared an excel calculation with me in forum for rpm, movement and layer thickness calculation. It worked me very well. I still use it. Believe in searching but if you cant find i can share it 2 days later.
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04-29-2019, 03:31 AM, (This post was last modified: 04-29-2019, 03:50 AM by gito.)
#4
RE: surface speed for HVOF coating process
(04-28-2019, 06:19 PM)velocity Wrote: Its about surface geometry. If its cylindrical, rotation speed and movement speed must be in balance to keep each layer 5 micrometer or less. Its the most important point. In castolin ds8000 applications we were telling "10000/diameter is your rpm" Its very roughly but works. I remember a member shared an excel calculation with me in forum for rpm, movement and layer thickness calculation. It worked me very well. I still use it. Believe in searching but if you cant find i can share it 2 days later.

'velocity'

thank you for the explanation, is it the same as the surface speed for the cylinder surface and the flat surface?

thanks
gito
(04-29-2019, 03:31 AM)gito Wrote:
(04-28-2019, 06:19 PM)velocity Wrote: Its about surface geometry. If its cylindrical, rotation speed and movement speed must be in balance to keep each layer 5 micrometer or less. Its the most important point. In castolin ds8000 applications we were telling "10000/diameter is your rpm" Its very roughly but works. I remember a member shared an excel calculation with me in forum for rpm, movement and layer thickness calculation. It worked me very well. I still use it. Believe in searching but if you cant find i can share it 2 days later.

'velocity'

thank you for the explanation, is it the same as the surface speed for the cylinder surface and the flat surface?

thanks
gito

velocity

I'm waiting to share the axle calculation

thanks
gito

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04-29-2019, 07:11 PM, (This post was last modified: 04-29-2019, 07:14 PM by Lemster68.)
#5
RE: surface speed for HVOF coating process
"is it the same as the surface speed for the cylinder surface and the flat surface? "

I am making an assumption that you are using a robot for your application. In order to get 60 M/min you would have to specify a robot speed of 1000 mm/s. Unless it is a large part and your reverse or return positions off the part are quite generous, it seems, in my experience, that the robot will not achieve the programmed speeds. A more typical and realistic velocity is about 500 mm/s, which is 30 M/Min. And yes, I program the robots. Finally, the fastest speeds are those with little to no orientation changes. When you reorient more, your tcp speeds will drop.
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04-30-2019, 10:21 AM,
#6
RE: surface speed for HVOF coating process
Pak Gito, hai bagaimana kabar?

http://www.gordonengland.co.uk/sef/Threa...rpm+speeds

you can do a search and find many wonderful bits of information. The key point as suggested by Lemster68 is to keep the surface speed high enough with the DJ to apply 5-7 microns per layer, especially on the flat work piece.
Stephen James Booth
www.ipsteknokraft.com
www.teknokraft.com
Indonesia WhatsApp +6281905603262

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05-03-2019, 05:21 AM,
#7
RE: surface speed for HVOF coating process
(04-29-2019, 07:11 PM)Lemster68 Wrote: "is it the same as the surface speed for the cylinder surface and the flat surface? "

I am making an assumption that you are using a robot for your application. In order to get 60 M/min you would have to specify a robot speed of 1000 mm/s. Unless it is a large part and your reverse or return positions off the part are quite generous, it seems, in my experience, that the robot will not achieve the programmed speeds. A more typical and realistic velocity is about 500 mm/s, which is 30 M/Min. And yes, I program the robots. Finally, the fastest speeds are those with little to no orientation changes. When you reorient more, your tcp speeds will drop.

Hi Lemester

to application hvof coating I am not use robot , but use manual proses , so let me know
"is it the same as the surface speed for the cylinder surface and the flat surface? "

Thanks
gito
Reply
05-03-2019, 07:15 AM,
#8
RE: surface speed for HVOF coating process
(04-30-2019, 10:21 AM)Stephen Booth Wrote: Pak Gito, hai bagaimana kabar?

http://www.gordonengland.co.uk/sef/Threa...rpm+speeds

you can do a search and find many wonderful bits of information. The key point as suggested by Lemster68 is to keep the surface speed high enough with the DJ to apply 5-7 microns per layer, especially on the flat work piece.

Hello Stephen Booth

kabar saya baik ,

thanks for the advice

gito
Reply
05-03-2019, 01:08 PM,
#9
RE: surface speed for HVOF coating process
(05-03-2019, 05:21 AM)gito Wrote:
(04-29-2019, 07:11 PM)Lemster68 Wrote: "is it the same as the surface speed for the cylinder surface and the flat surface? "

I am making an assumption that you are using a robot for your application. In order to get 60 M/min you would have to specify a robot speed of 1000 mm/s. Unless it is a large part and your reverse or return positions off the part are quite generous, it seems, in my experience, that the robot will not achieve the programmed speeds. A more typical and realistic velocity is about 500 mm/s, which is 30 M/Min. And yes, I program the robots. Finally, the fastest speeds are those with little to no orientation changes. When you reorient more, your tcp speeds will drop.

Hi Lemester

to application hvof coating I am not use robot , but use manual proses , so let me know
"is it the same as the surface speed for the cylinder surface and the flat surface? "

Thanks
gito

So you are hand spraying? If so, I have to reiterate Stephen's advice about keeping the microns per pass low, and that will require much practice and testing. The speed for the rotating workpiece will be easier to maintain as it is handled more by the RPM and a steady traverse up and down or left to right, as the case may be. A stationary workpiece will be the more difficult, as your operator must try to be both fast and maintain a good step back and forth.
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