12-10-2009, 03:42 PM,
|
|
Gordon
Administrator
|
Posts: 1,802
Threads: 70
Joined: Jun 2006
Reputation:
9
| |
RE: JP5000
Hi Hong
Was hoping someone with more specific experience with JP5000 would reply, but I will kick things off:
The longer barrel lengths may be capable to impart higher velocity and or increased heating (via extra containment). Coatings may benefit from increased density and strength.
Hardware life I suspect will decrease with barrel length - parameters become more critical to avoid erosion and fouling.
|
|
02-18-2010, 10:47 PM,
|
|
garyt32
Member
|
Posts: 7
Threads: 1
Joined: Feb 2010
Reputation:
0
| |
RE: JP5000
For me deposit efficiency greatly increases with barrel length, longer the better, but it becomes quite a trick balancing the powder feeders to avoid loading up the barrel, and all we are doing is running samples of many different custom powders. I have the best success with 6 inch barrels.
|
|
10-31-2010, 08:43 AM,
|
|
jaybob1999
Junior Member
|
Posts: 2
Threads: 0
Joined: Oct 2010
Reputation:
0
| |
RE: JP5000
Longer barrels may provide better DE for some powders but not CRC. Our parameters for that powder allow for either barrel. Hardware life is mainly a parameter issue. If something is out of whack a barrell's life can literally be minutes.
|
|
11-11-2010, 12:11 PM,
|
|
2DOGSTAR
LeeUTSUK
|
Posts: 26
Threads: 12
Joined: Apr 2010
Reputation:
0
| |
RE: JP5000
(10-31-2010, 07:20 PM)Metallurgy_eng Wrote: Dear members, I want to ask a question about this Topic Speaking.
What is the differances about 12mm, 19 mm and 22 mm combustion chamber? We have 78mm, 135mm, 200 mm length of Nozzles. We use length of 135mm for Carbides, and 200 mm for ceramics. but 12mm 19mm and 22mm combustion chambers, including the nozzles available in three different combinations.
What should be done according to the selection of combustion? Do you think the best is always recommended?
12mm,19mm and 22mm relate to the GTV Top Gun not the JP5000.
MR. Lee Worley
Universal Thermal Services (UK) Ltd
e-mail: lee@universalthermal.co.uk
web: https://www.universalthermal.com
Mobile: +44 (0) 7760 755112
Phone/Fax +44 (0) 117 960 5968
|
|
11-12-2010, 08:19 PM,
|
|
Kopi
Member
|
Posts: 6
Threads: 1
Joined: May 2010
Reputation:
0
| |
RE: JP5000
(10-31-2010, 07:20 PM)Metallurgy_eng Wrote: Dear members, I want to ask a question about this Topic Speaking.
What is the differances about 12mm, 19 mm and 22 mm combustion chamber? We have 78mm, 135mm, 200 mm length of Nozzles. We use length of 135mm for Carbides, and 200 mm for ceramics. but 12mm 19mm and 22mm combustion chambers, including the nozzles available in three different combinations.
What should be done according to the selection of combustion? Do you think the best is always recommended?
The geometry of the chamber giving / adjusting the pressure. The pressure has very strong effect for the coating. Specially for the velocity. It means in case of special requirement one of the solution can be the different geometry of the chamber or the nozzle.
|
|
|