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Welding Rods DMT A Series
Features:
TFY-DMTÂ A consists of a special pre-alloyed tube filled with coarsely grained Fused Tungsten Carbide (FTC) for oxyacetylene welding. The FTC has an exceptionally high hardness of over 2360 HV0.1 giving outstanding wear protection to hard faced areas. For special hard facing on machine parts of unalloyed, low alloyed or cast steel with carbon content up to 0.45%. Higher carbon content could lead to cracking. Depending on the size and composition of the area to be hard faced, the proper rod diameter and grain size should be chosen. If the area will encounter heavy abrasion a small grain size is recommended. If a cutting action is desired a larger grain size is preferable.
Application:
For hard facing and repairing tools and machine parts exposed to wear in mining, road construction, ceramic, petroleum, excavation and dredging applications.
Packaging:
|
Types
|
Ømm
|
Øinch
|
Grain Size
(mm) |
US Mesh
Size |
Color code
|
|
3505
|
3.5
|
1/8
|
0.25 – 0.70
|
24-60
|
white
|
|
3510
|
3.5
|
1/8
|
0.70 – 1.20
|
14-24
|
yellow
|
|
4005
|
4.0
|
5/32
|
0.25 – 0.70
|
14-60
|
white
|
|
4010
|
4.0
|
5/32
|
0.70 – 1.20
|
14-24
|
yellow
|
|
4020
|
4.0
|
5/32
|
1.00 – 1.60
|
10-16
|
green
|
|
5005
|
5.0
|
3/16
|
0.25 – 0.70
|
24-60
|
white
|
|
5010
|
5.0
|
3/16
|
0.70 – 1.20
|
14-24
|
yellow
|
|
5020
|
5.0
|
3/16
|
1.00 – 2.00
|
9-16
|
green
|
|
6005
|
6.0
|
1/4
|
0.25 – 0.70
|
24-60
|
white
|
|
6010
|
6.0
|
1/4
|
0.70 – 1.20
|
14-24
|
yellow
|
|
6020
|
6.0
|
1/4
|
1.00 – 2.00
|
9-16
|
green
|
|
8010
|
8.0
|
5/16
|
0.70 – 1.20
|
14-24
|
yellow
|
|
8020
|
8.0
|
5/16
|
1.00 – 2.00
|
9-16
|
green
|
|
8030
|
8.0
|
5/16
|
1.50 – 3.00
|
7-12
|
blue
|
* Standard rod lengths: 350mm (14″) and 700mm (28″)
* Other rod lengths and mesh sizes are available on request.
Â
Recommendations:
The area to be hard faced should be free of rust, scale, grease or other contamination. The burner nozzle should be held at a shallow angle to the work area with a netrual to slightly acetylene excess flame. To avoid overheating, the work area should be slightly wetted and the tube metal should not come into contact with the centre of the flame. Depending on the base metal and the size of the work area a preheating temperature between 350-500°C (660-930°F) is advised. Detailed welding directions are available upon request.
The area to be hard faced should be free of rust, scale, grease or other contamination. The burner nozzle should be held at a shallow angle to the work area with a netrual to slightly acetylene excess flame. To avoid overheating, the work area should be slightly wetted and the tube metal should not come into contact with the centre of the flame. Depending on the base metal and the size of the work area a preheating temperature between 350-500°C (660-930°F) is advised. Detailed welding directions are available upon request.
Please observe all appropriate safety regulations in force. The technical informations given in this data sheet reflects the present state of knowledge. They do not form part of any sales contract as guaranteed properties of the delivered materials.
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