AMDRY 1718- Hardness
11-05-2014, 06:13 AM,
#1
AMDRY 1718- Hardness
Hi everyone,

Im trying to achieve the hardness test for AMDRY 1718(HVOF)
The requirements is rockwell 15-N superficial 79. What parameters gives me the biggest impact to get me above this requirement? Please help.thanks heaps..

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01-28-2015, 09:07 PM,
#2
RE: AMDRY 1718- Hardness
I was having the same issue. What gun and equipment are you using?
Reply
02-01-2015, 02:50 PM,
#3
RE: AMDRY 1718- Hardness
(01-28-2015, 09:07 PM)Chico Wrote: I was having the same issue. What gun and equipment are you using?

Hi Chico,

I am using Metco DJ2600. The system is Metco single 220-A/H feedback system. The robot is an ABB robot. I am still struggling to get the 15-N superficial 79 hardness requirements.
What about your system?
What is your best results gathered?
Can you share some of your issues with this powder.

thanks.
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03-13-2015, 04:44 PM,
#4
RE: AMDRY 1718- Hardness
(02-01-2015, 02:50 PM)alvliew Wrote:
(01-28-2015, 09:07 PM)Chico Wrote: I was having the same issue. What gun and equipment are you using?

Hi Chico,

I am using Metco DJ2600. The system is Metco single 220-A/H feedback system. The robot is an ABB robot. I am still struggling to get the 15-N superficial 79 hardness requirements.
What about your system?
What is your best results gathered?
Can you share some of your issues with this powder.

thanks.


We use DJCE controller 9MPE-DJ with a JK300 torch
Increase part temp
And the below parameters is how i got it in



start restart
oxygen flow 42 42
hydrogen flow 61 61
feed rate 40 40
carrier flow 30 30
vibrator 15 15
gun distance 10 10
preheat temp avg 330 338
part temp avg 280 285
passes 65 65
thickness 0.0165 0.0165
tensile #1 10796 11385
tensile #2 10277 10699
tensile #3 10036 10347
tensile Ave 10370 10810
Harndess Ave 80.45 80.34
HIT #1 80.0 79.8
HIT #2 80.3 79.9
HIT #3 80.4 79.7
HIT #4 80.3 81.5
HIT #5 80.6 81.1
HIT #6 80.1 80.5
HIT #7 81.6 79.3
HIT #8 80.8 79.4
HIT #9 79.7 82
HIT #10 80.7 80.2
AVERAGE 80.45 80.34
min 79.7 79.3
max 81.6 82
comment no cooling air no cooling air

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03-13-2015, 11:21 PM,
#5
RE: AMDRY 1718- Hardness
Hi .....
I setted this powder many years ago, and as chico used another torch, I send to you the parameters I obtained with a DJ 2600, and the hardness was about 82 HR15N
Gun Type DJ 2600
Injector Number 8
Insert Number 8
Shell Number 8
Siphon Plug Number 8
Air Cap Number 2603
Oxygen Pressure (psi) -175
Oxigen Flow (FMR) -34 / 222 (SLPM)
Fuel Gas Type Hydrogen
Fuel Pressure (psi) -145
Fuel Flow (FMR) -59 / 615 (SLPM)
Nitrogen Pressure (psi) - 135
Nitrogen Flow (FMR) -68 / 619 (SLPM)
N2Carrier Pressure (psi)
Powder Feed Rate -5lb/hr (37.9 g/min)

Grit Blast : Type / Material Pressure / Al2O3
Grit : Size / Pressure “F” / 40PSI
Spray Distance (in) 10 (254 mm)
Gun Traverse Speed (mm/sec.) 1000
Surface Speed (Ft. Min.) ~197
Step (mm) 4
No. of Passes 35
Coating Macrohardness (15N) 82.07
Coating Microhardness (DPH300) 408
As Sprayed Surface Finish (µi) 181 Ra
Coating Thickness (Inch) 0.0354
Application Rate (inch/pass) 0.001
I think this can help you
Best regards
Luigi
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