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¢ºCLICK MOVIE.
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¡ã Engine Valve(Ship) |
¡ã Engine Valve(-Car) |
¡ã Multipurpose Welding M/C |
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¡ã Chamber Welding |
¡ã Sample |
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In case of plasma powder hardfacing method, first, arc is occurred from water-cooled torch nozzle and then, this arc is formed into round arc pole. (that's why heat source is stable), After then, powder is provided into plasma arc. Finally, powder melt.
< The compairson of difference
kinds of welding method >
Item |
Filler metal |
The rate of deposition (kg/hr) |
The rate of dilution (%) |
Minimun hardfacing bead thickness (mm) |
Welding method |
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P.T.A |
Powder |
4.5 |
3~10 |
0.5 |
TIG,Welding |
wire / rod |
1 |
10~25 |
2.4 |
MIG Welding |
wire |
3.6 |
15~30 |
3.2 |
Coated arc welding |
coated electrode |
2 |
15~25 |
2.5 |
SUB MERGED welding |
wire |
4 |
15~30 |
3.2 |
OXY-acetylene |
rod |
1 |
1~3 |
0.8 |
Plasma metallizing spraying |
Powder |
2.5 |
less than 0.1 |
0.1 |
¢Ã What is Plasma Transferred Arc Process
- The plasma is the source of heat in PTA surfacing process. The powder is used as the surfacing alloy consumables.
- There are lots of features in the PTA process
in comparison with the other
process
< The heat source and powder supply are controlled separately >
- The PTA system can control the dilution as low as 5% and also can produce the bead as follows.
- Bead thickness : 0.5 ~ 6.0mm, bead width : 5 ~ 50mm
- In addition, the PTA system can deposit max. 6kg/hr
< Hardfacing material is powder >
- It is possible to get a good result for constant surfacing with lower feat
- It is possible to get a high degree of hardness without using the wire for high hardness. It can use many kinds of alloy metals.
< Inert gas is used for shield gas >
- As the PTA is processed under inert bas shield, so there is no almost weld flaw and the better bead can be obtained.
- The top quality of the bead can make the user save the powder and finishing cost.
- Our PTA does work automatically, especially loading of valve to trash, welding and unloading of valve, so even the beginner or unskilled craftsmen does produce top quality products.
