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Welding Rods DMT B Series
Features:
TFY-DMT B is a nickel core flexible rod coated with both fused tungsten carbide (FTC) and Ni-Cr-B-Si developed for oxyacetylene welding. The deposited alloy consists of approximately 65% FTC and 35% Ni-Cr-B-Si-matrix with a matrix hardness of 45 HRC. The overlay is highly resistant to acids, bases, lye and other corrosive media and excessive wear conditions. The rod has a low melting range of between 950-1050°C (1742-1922°F) and feature a self-fluxing charateristic producing a smooth, clean welded surface.
Application:
Hard facing of ferritic and austenitic steels (Steel Castings), applied for overlaying mixer blades, screws and conveyors in chemical and dye industry, food industry. Specially recommended for stabilizer blades in the petroleum industry.
Physical Characteristics:
FTC:
|
approx. 2360HV0.1
|
NiCrBSi-matrix:
|
approx. 420 – 450 HV0.1
|
Packaging:
Types
|
Ømm
|
Øinch
|
Grain Size
(mm) |
US Mesh
Size |
4005
|
4.0
|
5/32
|
0.25 – 0.70
|
24-60
|
4010
|
4.0
|
5/32
|
0.70 – 1.20
|
14-24
|
5005
|
5.0
|
3/16
|
0.25 – 0.70
|
24-60
|
5010
|
5.0
|
3/16
|
0.70 – 1.20
|
14-24
|
5020
|
5.0
|
3/16
|
1.00 – 2.00
|
9-16
|
6005
|
6.0
|
1/4
|
0.25 – 0.70
|
24-60
|
6010
|
6.0
|
1/4
|
0.70 – 1.20
|
14-24
|
6020
|
6.0
|
1/4
|
1.00 – 2.00
|
9-16
|
8005
|
8.0
|
5/16
|
0.25 – 0.70
|
24-60
|
8010
|
8.0
|
5/16
|
0.70 – 1.20
|
14-24
|
8020
|
8.0
|
5/16
|
1.00 – 2.00
|
9-16
|
Welding recommendation:
The surface to be hard faced should be clean and free of rust, scale, grease or other contamination preferably by grinding or grit blasting. Deposits should be made using a gas flame with a neutral to slight acetylene balance.
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