YD Tungsten Carbide Composite Welding Rods Characteristics:
The YD tungsten carbide composite rod is made of superior cemented carbide grits in Nickel Silver or Brass Bronze.
With perfect properties of high hardness, excellent corrosion, abrasion resistance, high pressure and temperature resistance.
It’s designed to form soldering hard-facing on fishing tools used during fishing jobs in oil, gas and exploratory well bores. Mill surfacing and renewal is carried out both in workshops and oilfield.
Chemical Composition of YD tungsten carbide composite welding rods:
| Grade | Hard phase | Bonding materials |
| YG8 and YT series | Cemented Carbide Grits | Nickle silver/Brass Bronze |
Specifications of YD tungsten carbide composite rod:
| Composite rod (mm) | 280mm/350mm/450mm/450mm |
| Composite rod Diameter(mm) | 12mm/12mm/16mm/22mm |
| Tungsten Carbide Grits | 1/16’’ x 1/8’’ (1.6mm~3.2mm) |
3/16’’ x 1/8’’ (3.2mm~4.8mm) | |
1/4’’ x 3/16’’ (4.8mm~6.4mm) | |
5/16’’ x 1/4’’ (6.4mm~8.0mm) | |
3/8’’ x 5/16’’ (8.0mm~9.5mm) | |
1/2’’ x 3/8’’ (9.5mm~12.7mm) |
Note: The size of tungsten carbide grits can be customized according to customer’s special requirements.
The oxyacetylene flame welding operation process of YD tungsten carbide composite rods is as follow:
(1) clean up the workpiece, make the welding workpieces surface with metallic luster.
(2) the flat position of welding, therefore can use the appropriate clamping fixture for control of surfacing layer
thickness, thick piece of available.
(3) with a neutral flame preheating, flame core not contact surface, the distance to 25 mm is advisable.
(4) carbide surfacing welding layer.With YD type electrode surfacing, the use of neutral flame (can be slightly
carbonizing flame) tip is steady on the workpiece surface movement, the flame of the alloy electrode heating
(be careful not to make flame cone tip contact alloy particles), tire body in the electrode alloy melt, carbide
particles are also falling.Before the tire body of molten metal solidification, the particles arrange, can use left
hand of the alloy electrode fingers, or another person holding a base electrode or pull rod on graphite rod
in a quick stir particles, making them evenly aligned neatly.Surfacing layer thickness control according to
the requirements of design.
(5) after the workpiece welding, where no ventilation, slow cooling, cannot quench, conditional usable
asbestos blanket cover.
(6) the workpiece after cooling to room temperature, if necessary, grinding surface surfacing to required
size and shape.
(7) clean up the workpiece, remove all splash, slag, etc.
Applications and Purpose of YD Tungsten Carbide Composite Rods:
