YD type tungsten carbide composite rods description
YD type Tungsten Carbide Composite Rods is mainly used for surfacing welding of some severely worn or cut workpieces in industries such as petroleum, mining, coal mining, geology, and construction.
Such as: milling shoes, grinding shoes, stabilizers, reamer, drill pipe joints, hydraulic cutters, scraper blades, coal planer cutters, core drill bits, pile driver bits, spiral drill bits, etc.
YD type Tungsten Carbide Composite Rods of specification
| Brand | Size(mm) | Particle Size(mm) |
YD-9.5 | 9.5 | 9.5-6.5 |
| YD-8 | 8.0 | 8.0-6.5 |
| YD-6.5 | 6.5 | 6.5-5.0 |
| YD-5 | 5.0 | 5.0-3.0 |
| YD-3 | 3.0 | 3.0-2.0 |
| YD-10μm | 10μm | 10-18μm |
| YD-18μm | 18μm | 18-30μm |
| YD-30μm | 30μm | 30-50μm |
Surfacing process of YD type Tungsten Carbide Composite Rods
The electrode adopts oxyacetylene surfacing. The operation process is as follows.
(1) clean up the workpiece, so that the surface of the workpiece to be welded metal luster.
(2) Take the flat welding position for surfacing, this can use the appropriate tire for the control of the thickness of the surfacing layer, can be used to limit the thickness of the block.
(3) Preheating with a neutral flame, the center of the flame do not touch the surface of the workpiece, the distance to 25mm is appropriate.
(4) when the workpiece is heated to the appropriate temperature, can be coated with a layer of special flux on the surface to be surfacing, such as flux preheating is appropriate, the flux will be bubbling boiling, at this time, the surface of the workpiece oxides will be removed by the flux, and then continue to heat to the solvent covered by the surface of the surface of the surfacing and was a transparent liquid, indicating that the surfacing can begin to surfacing bottoming welding layer.
(5) Surfacing bottoming layer, the use of neutral flame, with the tip of the bottoming electrode constantly stirring the flux, and then melted, the welding nozzle is constantly running, its running speed is exactly equal to the welding speed of the bottoming electrode. Make sure that the flux remains on the surface of the workpiece. When the bottoming process is over, the surfacing surface should form a thin layer of smooth bottoming alloy, the thickness of about lmm or so appropriate. If the preheating temperature is insufficient, the molten priming layer of metal can not flow flat, and in the workpiece surface smashed on the formation of small balls or bumps.
(6) Surfacing carbide welding layer. In the bottoming alloy layer above, with YD type welding electrode surfacing, the use of neutral flame (can be slightly partial carbide flame) welding nozzle uniformly and smoothly moving on the surface of the workpiece, the flame against the alloy electrode heating (note that the tip of the flame can not be made to contact the alloy particles), so that the electrode in the carcass alloy melting, followed by the tungsten carbide particles also fall together. In the molten body metal before solidification, to arrange the particles, can be held in the left hand of the alloy welding rod pulling, or another person holding a bottoming welding rod or graphite stick as a plucking stick, in the evening quickly fiddled with the particles, so that the arrangement of uniformity and neatness. Surfacing layer thickness control according to design requirements.
(7) after the workpiece surfacing, placed in an unventilated place, slow cooling, not rapid cooling, conditions can be covered with asbestos felt.
(8) After the workpiece cooled to room temperature, if necessary, the surfacing surface can be ground to the required size and shape.
(9) Clean up the workpiece, remove all the spatter, slag, etc..
Surfacing operation method is correct, the sign of satisfactory quality of the cladding layer is: to be cooled, the surface of the cladding layer is bright golden yellow, cladding layer of the body alloy and base metal bonding is good, the alloy particles are arranged tightly, and uniformly, firmly welded embedded in the body metal.
Signs of overheating or overcooking are: reddening of the carcass metal after cooling, with the alloy particles showing a black surface, which results in the working performance of the alloy particles being impaired and affects their service life.
Signs of insufficient heating are: after cooling, the color is silver gray with no luster, the alloy is not well bonded to the base metal, and the entire cladding layer is in danger of falling off when the tool is running after cladding.
YD type tungsten carbide composite rods description
YD type Tungsten Carbide Composite Rods is mainly used for surfacing welding of some severely worn or cut workpieces in industries such as petroleum, mining, coal mining, geology, and construction.
Such as: milling shoes, grinding shoes, stabilizers, reamer, drill pipe joints, hydraulic cutters, scraper blades, coal planer cutters, core drill bits, pile driver bits, spiral drill bits, etc.
YD type Tungsten Carbide Composite Rods of specification
| Brand | Size(mm) | Particle Size(mm) |
YD-9.5 | 9.5 | 9.5-6.5 |
| YD-8 | 8.0 | 8.0-6.5 |
| YD-6.5 | 6.5 | 6.5-5.0 |
| YD-5 | 5.0 | 5.0-3.0 |
| YD-3 | 3.0 | 3.0-2.0 |
| YD-10μm | 10μm | 10-18μm |
| YD-18μm | 18μm | 18-30μm |
| YD-30μm | 30μm | 30-50μm |
Surfacing process of YD type Tungsten Carbide Composite Rods
The electrode adopts oxyacetylene surfacing. The operation process is as follows.
(1) clean up the workpiece, so that the surface of the workpiece to be welded metal luster.
(2) Take the flat welding position for surfacing, this can use the appropriate tire for the control of the thickness of the surfacing layer, can be used to limit the thickness of the block.
(3) Preheating with a neutral flame, the center of the flame do not touch the surface of the workpiece, the distance to 25mm is appropriate.
(4) when the workpiece is heated to the appropriate temperature, can be coated with a layer of special flux on the surface to be surfacing, such as flux preheating is appropriate, the flux will be bubbling boiling, at this time, the surface of the workpiece oxides will be removed by the flux, and then continue to heat to the solvent covered by the surface of the surface of the surfacing and was a transparent liquid, indicating that the surfacing can begin to surfacing bottoming welding layer.
(5) Surfacing bottoming layer, the use of neutral flame, with the tip of the bottoming electrode constantly stirring the flux, and then melted, the welding nozzle is constantly running, its running speed is exactly equal to the welding speed of the bottoming electrode. Make sure that the flux remains on the surface of the workpiece. When the bottoming process is over, the surfacing surface should form a thin layer of smooth bottoming alloy, the thickness of about lmm or so appropriate. If the preheating temperature is insufficient, the molten priming layer of metal can not flow flat, and in the workpiece surface smashed on the formation of small balls or bumps.
(6) Surfacing carbide welding layer. In the bottoming alloy layer above, with YD type welding electrode surfacing, the use of neutral flame (can be slightly partial carbide flame) welding nozzle uniformly and smoothly moving on the surface of the workpiece, the flame against the alloy electrode heating (note that the tip of the flame can not be made to contact the alloy particles), so that the electrode in the carcass alloy melting, followed by the tungsten carbide particles also fall together. In the molten body metal before solidification, to arrange the particles, can be held in the left hand of the alloy welding rod pulling, or another person holding a bottoming welding rod or graphite stick as a plucking stick, in the evening quickly fiddled with the particles, so that the arrangement of uniformity and neatness. Surfacing layer thickness control according to design requirements.
(7) after the workpiece surfacing, placed in an unventilated place, slow cooling, not rapid cooling, conditions can be covered with asbestos felt.
(8) After the workpiece cooled to room temperature, if necessary, the surfacing surface can be ground to the required size and shape.
(9) Clean up the workpiece, remove all the spatter, slag, etc..
Surfacing operation method is correct, the sign of satisfactory quality of the cladding layer is: to be cooled, the surface of the cladding layer is bright golden yellow, cladding layer of the body alloy and base metal bonding is good, the alloy particles are arranged tightly, and uniformly, firmly welded embedded in the body metal.
Signs of overheating or overcooking are: reddening of the carcass metal after cooling, with the alloy particles showing a black surface, which results in the working performance of the alloy particles being impaired and affects their service life.
Signs of insufficient heating are: after cooling, the color is silver gray with no luster, the alloy is not well bonded to the base metal, and the entire cladding layer is in danger of falling off when the tool is running after cladding.
