How to apply a uniform coat on a cone pulley with 8 different diameters
05-04-2015, 03:19 PM, (This post was last modified: 05-04-2015, 04:16 PM by behzadsaberi.)
#1
How to apply a uniform coat on a cone pulley with 8 different diameters
Hi forum
I recently coated a cone pulley with 8 different diameters. I adjust the transverse speed of gun proportional to each step diameters (reduce the transverse speed of gun by increasing the diameter) to ensure having same coat thickness in a single pass on every 8 step. But surprisingly I have found that for the equal numbers of passes, coating thickness increased by increasing the diameter. I guess that’s because of the difference in surface speeds for each 8 steps of cone pulley. My question is that how I can spray such a cone pulley to have the same thickness at final stage of coating for all diameters???
The coating conditions that i used:
1)Hp-HVOF
2)WC-10Co-4Cr
3)minimum diameter: 63.95mm & maximum diameter:166.02mm
4) rotation speed: 120 RPM
regurds
Reply
05-07-2015, 03:47 PM,
#2
RE: How to apply a uniform coat on a cone pulley with 8 different diameters
I would think adjusting the lateral speed as per the SFPM (circumference * rpm) - need to program the robot accordingly - maybe a difficult task as the width of each step would be very small i would guess....





(05-04-2015, 03:19 PM)behzadsaberi Wrote: Hi forum
I recently coated a cone pulley with 8 different diameters. I adjust the transverse speed of gun proportional to each step diameters (reduce the transverse speed of gun by increasing the diameter) to ensure having same coat thickness in a single pass on every 8 step. But surprisingly I have found that for the equal numbers of passes, coating thickness increased by increasing the diameter. I guess that’s because of the difference in surface speeds for each 8 steps of cone pulley. My question is that how I can spray such a cone pulley to have the same thickness at final stage of coating for all diameters???
The coating conditions that i used:
1)Hp-HVOF
2)WC-10Co-4Cr
3)minimum diameter: 63.95mm & maximum diameter:166.02mm
4) rotation speed: 120 RPM
regurds

Reply
05-09-2015, 01:39 PM, (This post was last modified: 05-09-2015, 02:14 PM by CHI3.)
#3
RE: How to apply a uniform coat on a cone pulley with 8 different diameters
hello and welcome
Each diameter has to have a different RPM and traverse speed to equal the same surface feet per minute. Smile

Dia X 3.14(Pi)=Circumference
2400"(surface inch per minute) / Circumference = Turntable RPM
RPM X .120"(step per revaluation) = Robot traverse
Smile
Reply
05-17-2015, 07:10 PM,
#4
RE: How to apply a uniform coat on a cone pulley with 8 different diameters
Shantanu & Chico thanks for your useful recommends
Reply
05-18-2015, 07:42 PM, (This post was last modified: 05-18-2015, 07:43 PM by behzadsaberi.)
#5
RE: How to apply a uniform coat on a cone pulley with 8 different diameters
(05-09-2015, 01:39 PM)Chico Wrote: hello and welcome
Each diameter has to have a different RPM and traverse speed to equal the same surface feet per minute. Smile

Dia X 3.14(Pi)=Circumference
2400"(surface inch per minute) / Circumference = Turntable RPM
RPM X .120"(step per revaluation) = Robot traverse
Smile

thanks for your complete response
if I understood your comment I need a rotating table which could be programed simultaneously with robot that I don’t have itBig Grin
Reply




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