What is flexible welding rope/wire？
Cast tungsten carbide flexible welding wire is a kind of soft welding wire, which uses cast tungsten carbide powder, spherical cast tungsten carbide powder or a mixture of the two as the hard phase, and uses nickel-based alloy powder as the bonding phase, which is mixed and bonded in a certain proportion. It’s extruded, dried and manufactured soft welding wire with a hard metal core in the center, which is suitable for oxyacetylene welding, with excellent flow and form control at low deposition temperatures around 1050°C. The nickel-based alloy in the product gives the cladding layer excellent corrosion resistance. They are excellent flow and wetting properties.
Flexible welding ropes normally refer to Cast Tungsten Carbide Welding Rope and SCTC Welding Rope (Spherical Tungsten Carbide Welding Rope). The cast tungsten carbide is with good wear resistance. The performance of this kind of welding rope possesses makes it suitable for welding on petroleum drilling tools, concrete mixing blade, mud pump, coal sluice, coal drill pipe, tunnel drilling machinery to stand severe working environment or conditions and extend service life accordingly. Recommended application method is Oxy-Acetylene Welding with weak carburizing flame.
ZZBETTER mainly provide with BT-2100 and BT-2200. BT-2100 flexible welding rods are made of 65% cast tungsten carbide and 35% self-fluxing nickel alloy, and BT-2200 flexible welding rods are made of 65% spherical cast tungsten carbide and 35% self-fluxing nickel alloy.
Grade & Chemical Composition
| Hard Phase | Bonding Phase | |
| BT-2100 | Cast Tungsten Carbide % | Self-Fluxing Nickel Alloy |
| 65% | 35% | |
| BT-2200 | Spherical Cast Tungsten Carbide % | Self-Fluxing Nickel Alloy |
| 65% | 35% |
Specification
| Spec. | Diameter(mm) | Length(mm) | N.W./Spool（kg) |
| BT21-1 | Φ4.0 | Spool | 15+/-0.5 |
| BT21-2 | Φ5.0 | Spool | 15+/-0.5 |
| BT21-3 | Φ6.0 | Spool | 15+/-0.5 |
| BT21-4 | Φ8.0 | Spool | 15+/-0.5 |
What are the applications？
Flexible welding rods have excellent fluidity and molding control at low deposition temperature of 1050℃ so that they are suitable for oxyacetylene welding process.
Containing cast tungsten carbide, the welding layer of flexible welding rods has an extremely effective protection against erosive and abrasive attack, so flexible welding rods are highly recommended using in mining, drilling, and agricultural equipment as well as chemical and food processing industries.
It is suitable for oxyacetylene welding process and has excellent fluidity and forming control at a lower deposition temperature of about 1050°C.
Tungsten carbide flexible welding rods can be used for overlay welding on all steel substrates except manganese steel, and they are not recommended to use on cast iron. These welding products perform well in severe working conditions, increase the wear resistance, impact resistance, and corrosion resistance of the corresponding work-pieces, and prolong the service life. They can be used for diamond steel body drill bits, centralizers and other oilfield equipment work-pieces Surface welding can also be used for surface welding of mining tools and building materials machinery.
To conclude, the performance this kind of welding rope possesses makes it suitable for welding on petroleum drilling tools, concrete mixing blade, mud pump, coal sluice, coal drill pipe, tunnel drilling machinery to stand severe working environment or conditions and extend service life accordingly. Recommended application method is Oxy-Acetylene Welding with weak carburizing flame.
Welding Process
Oxyacetylene process
Use a neutral flame to preheat the entire work-piece at 200-350°C (according to the size of the work-piece and the type of base material), and then preheat the part at 500-550°C. The electrode and the work-piece should always be in contact to ensure that the alloy melts on the surface of the work-piece, and the flame should continuously swing forward. The end of the electrode should lift as the weld bead forms.
TIG welding process
A TIG welding process is similar to the commonly used cladding process. The distance between the end of the electrode and the work-piece is always kept at 5mm, and a small current is used for welding.
Flexibility and Repair Versatility of Flexible Welding rod
Because of its flexibility, you can use it in a wide range of applications.
In fact, it’s seen as the best solution for hard-facing because of its properties.
However, the most typical of all applications it can be used in involve the following processes:
Improvement of the Corrosion and Abrasion Resistance of Parts and Components
Hard-facing of High Impact Parts like Fuel Mixer Blades, Conveyor Screws, and Pumps
Increasing Hardness of Heavy-Impact Machinery and Equipment.
Zhuzhou Better Tungsten Carbide Co.,Ltd has been manufacturing hard-facing material for over years and has poured our experience and knowledge into increasing the performance of the hard-facing material. With the presence of ZZBTTER throughout the world, we are well equipped to serve the market. Our team is made up of knowledgeable hard-facing material specialists in the field and qualified sales team. We are trying out best to provide satisfactory service to our customers during the procurement process.
Surfacing Coating/Spraying/Cladding/Overlaying Technology is one of the crucial technology to improve the service life of the work pieces. It can be worked in the form of special treatment and machining on the surface of the work pieces to improve its wear resistance against abrasion, erosion, corrosion and heat significantly and increase the service life and achieve the repair purpose finally.
Please send us email about Atomized Self-fluxing Nickel Alloy NiBSi / Hastelloy / Inconel / Stellite / MCrAlY / NiCrCoAlY / Iron Alloy 316L or Agglomerated Sintered Fine WC / Chrome Carbide Nickel Chrome Cr3C2 / Molybdenum Powder and Wire for HVAF / HVOF / Flame / Plasma ID or Flash Carbide thermal spraying and Laser or PTA Cladding, Spherical Cast / Fused / Mono-crystalline / Macro-crystalline Tungsten Carbide Powder or Sintered Tungsten Carbide Cemented Hard-metal Pellets Flexible Welding Rope for Hard-facing overlaying etc.
If you are interested in any tungsten carbide products and want more information and details, you can CONTACT US. Of course, there are also various hard-facing materials to meet your needs.
Our main hard facing products:
- Crushed Carbide Grits
- Carbide Composite Rods
- Carbide Wear Inserts
- Carbide Welding Pellets
- Carbide Pellets Welding Rods
- Tinning Rods
- Flexible Welding Rods/Rope/Wire