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Tungsten Carbide Hardfacing

Tungsten carbide wires, electrodes and powders used for hardfacing to combat high abrasion

Tungsten carbide hardfacing has the highest level of abrasion resistance available. The high level of abrasion resistance is offset by lower impact resistance than other types of hardfacing. Alloys International are able to provide advise on the correct material for your application. We stock a large range of different types of material, including MIG wire, open arc wire, electrodes, TIG rods (GTAW) and Laser and PTAW powders at our warehouses in Melbourne, Perth and Queensland.

Tungsten Carbide Image

PART NO.DESCRIPTION & APPLICATIONS

TUNGSTEN CARBIDE ELECTRODES

AI-0760T-TDSAI-0760T is a tubular electrode offering the optimum abrasion resistance. Alloy contains Cast tungsten carbide in granular form in an iron matrix. The coating on the covered electrodes is moisture resistant. Deposits contain carbides 2200 HV. The deposits cannot be drilled or machined. Finish by grinding only if required.
Due to exceptional hardness relief check cracking is normal. A controlled fume low dilution product. Magnetic. AI-0760T may be applied direct to plain and low carbon steels.
Applications include: Oil Drill Collars, Scrapers, Augers and parts subjected to very high abrasion
AI-0779E-TDSAI-0779E is a manual electrode filled with ultra-hard fused tungsten carbide particles and a special nickel, chrome, boron matrix. The alloy is specially designed for applications involving extreme abrasion and erosion in combination with corrosion. The matrix material is highly resistant to acids, lyes and other corrosive media.
AI-0779E can be overlaid onto mild steels, low alloys steels, steel castings, nickel based and stainless alloys.
Applications include: Drilling Stabilisers, Conveyor Screws, Scrapers, Mill Plates, Mixer Blades, Drilling Tools etc.

TUNGSTEN CARBIDE OXY/TIG RODS

AI-0776-TDSAI-0776 is an alloy comprising cast tungsten carbide particles in a Nickel Silver matrix, which is applied by the Oxy-Acetylene Brazing method. AI-0776 provides excellent wear resistance to high stress abrasion in components operating at high pressures.
AI-0776 is easily applied using conventional equipment. The Nickel Silver matrix melts easily (melting temperature approximately 850°C) and the Tungsten Carbide particles are evenly dispersed in a homogeneous weld deposit.
AI-0777-TDSAI-0777 is an alloy comprising cast tungsten carbide particles in a Nickel Silver matrix, which is applied by the Oxy-Acetylene Brazing method. AI-0777 provides the maximum wear resistance to high stress abrasion in components operating at high pressures.
AI-0777 is easily applied using conventional equipment. The Nickel Silver matrix melts easily (melting temperature approximately 850°C) and the Tungsten Carbide particles are evenly dispersed in a homogeneous weld deposit.
Applications include: Developed initially for stabiliser applications in the drilling industry many other applications have been found for this product.
AI-0779B-TDSAI-0779B is a tubular oxy-acetylene surfacing rod, filled with ultra-hard fused cast tungsten carbide particles and a special nickel, chrome, boron matrix.
The fused cast tungsten carbide particles are produced with a new and unique patented melting process, which makes them the most wear resistant tungsten carbides available today. The fused cast carbides exhibit an extremely fine acicular, needle like structure (as high as 95%) and a very constant hardness, yet are more ductile than crushed cast carbide or mono-crystalline carbide. The hardness is up to 33% higher than any other carbide and bulk density is 10-20% higher.
The above features result in a product, which provides significant increases in wear resistance of the welded deposit.
The alloy is specially designed for applications involving extreme abrasion and erosion in combination with corrosion. The matrix material is highly resistant to acids, lyes and other corrosive media.
AI-0779B can be overlaid onto mild steels, low alloys steels, steel castings, nickel based and stainless alloys.
Applications include: Drilling Stabilisers, Conveyor Screws, Augers, Scrapers, Mill Plates, Mixer Blades, Drilling Tools, Tillage Points, Ground Engaging Tools etc.
AI-0779SP-TDSAI-0779SP is a tubular oxy-acetylene surfacing rod, filled with ultra-hard spherical cast tungsten carbide particles and a special nickel, chrome, boron matrix.
The spherical cast tungsten carbide particles are produced with a new and unique patented melting process, which makes them the most wear resistant tungsten carbides available today.
The alloy is specially designed for applications involving extreme abrasion and erosion in combination with corrosion. The matrix material is highly resistant to acids, lyes and other corrosive media.
AI-0779SP can be overlaid onto mild steels, low alloys steels, steel castings, nickel based and stainless alloys.
Applications include: Drilling Stabilisers, Conveyor Screws, Augers, Scrapers, Mill Plates, Mixer Blades, Drilling Tools, Tillage Points, Ground Engaging Tools etc.
AI-0799-TDSAI-0799 is an alloy comprising a macroscopic heterogenous deposit consisting of cast tungsten carbide particles in matrix of Ni, Cr, B, and Si. The matrix comprises a nickel base solid solution with a fine boride dispersion and a small number of carbides in an interdendritic network.
AI-0799 provides the ultimate in wear resistance to high stress, fine particle abrasion on components operating at high pressures, with some temperature and corrosion.
AI-0799 is applied by the Oxy-Acetylene process as the lower application temperature results in less disolution of the Carbides than an arc process.
A major advantage of AI-0799 (apart from its excellent abrasion resistance) is that once it is applied to a component and that component is removed from service AI-0799 can be re-applied over the top of the remaining deposit to touch up areas of wear, thus significantly reducing the cost of re-surfacing. This is a major benefit over other types of hardfacing where, in most cases, the old material has to be completely removed.
AI-0799SP-TDSAI-0799SP is a flexible oxy-acetylene surfacing rod, combining ultra-hard spherical cast tungsten carbide particles and a special nickel, chrome, boron matrix.
The alloy is specially designed for applications involving extreme abrasion and erosion in combination with corrosion. The matrix material is highly resistant to acids, lyes and other corrosive media.
AI-0799SP can be overlaid onto mild steels, low alloys steels, steel castings, nickel based and stainless alloys.
AI-0799SP70-TDSAI-0799SP70 is an alloy specially developed and released in 1998 after successful field trials to combat the combined effects of fine particle abrasion and erosion as experienced in the mineral sands industry and other areas where wet slurries are pumped. The unique qualities of this product lie in the high concentration (70% by weight) and sizing of cast tungsten carbide grains. A carefully blended mix of Coarse, Medium and Fine carbides work together to offer good impact resistance and large particle abrasion resistance from the coarse carbides, a hard matrix and protection from fine particle abrasion from the fine carbides and a balance between the two offered by the medium carbides.
AI-0799SP70 provides the ultimate in wear resistance to fine particle abrasion combined with some impact. It is applied by the Oxy-Acetylene process. The lower application temperature results in less dissolution of the Carbides than an arc process.
Applications include: can be re-applied over the top of an existing deposit to touch up areas of wear, thus significantly reducing the cost of re-surfacing. This is a major benefit over other types of hardfacing where, in most cases, the old material has to be completely removed.

OPEN ARC WIRE

AI-1541-TDSAI-1541 is an open arc tubular wire filled with 40% fused tungsten carbide (FTC) and up to 10% of special refractory carbides for semiautomatic application, where extreme abrasive wear is encountered. On low alloyed steels that have a maximum of 0.45% carbon, the overlay is crack-free or low crack. A higher carbon content may lead to a small degree of relief checking.
For hard-facing and repairing tool joints and other drilling and mining parts exposed to extreme wear. A high-performance, yet economical alternative to AI-1779.
Applications include: Tunnelling shields, road construction, drilling, geothermal well exploration, excavation, brick making.
AI-1542VC-TDSAI-1542VC is an open arc tubular wire filled with a mild steel matrix infused with 7% Vanadium and 19% Chromium (especially hard heat and corrosive-resistant refractory carbides) [1800-2900HV0,2] forming a stable, dense, highly scratch-resistant matrix of iron-chromium, vanadium complex carbides binding 40% Fused Tungsten Carbide (FTC). Use where extreme abrasive wear is encountered in combination with high corrosion. Produces a silvery relief-checked surface when applied to low carbon substrates of <0,45% carbon (a higher carbon content may lead to an increased degree of relief checking). Provides protection against high abrasion, moderate impact in corrosive media. Perfect for all areas of critical importance such as oil-well (HW) drill pipe, downhole stabilisers, hole-opener shoulders and all types other drilling and mining, crushing, boring and tunnelling parts. There is no need to pre-heat base metal although some alloys benefit from a pre-heat of between 150-350°C. It is highly recommended that the voltage and welding current are kept on the lowest possible settings to preserve the integrity of the tungsten carbide granules. During welding, the short arc should be activated such that the weld metal is deposited thickly and smoothly to ensure the tungsten granules are evenly distributed throughout the weld bead. If weld parameters are set too high, the deposit will be too liquid, allowing the tungsten granules to sink to the bottom.
Applications include: Mining, excavation, earth moving, geothermal well drilling and deep oil and gas drilling, tunnelling shields, road construction etc.

TUNGSTEN CARBIDE MIG

AI-1779C-TDSAI-1779C refers to a flux cored nickel wire filled with Fused Tungsten Carbide (FTC) granules set within a Nickel matrix including elements of Chrome, Boron and Silicon and is designed for semi-automatic welding. AI-1779C is a special alloy for the protection of wear surfaces against extreme abrasion combined with high corrosion.
Applications: AI-1779C is designed for welding on all types of steel and for hardfacing cast iron and for repairing oil tools such as stabilizers, openers, gauge bars etc. AI-1779C can be replaced by AI-1541VC in applications where austenitic and heat sensitive castings are concerned.
AI-1779C is recommended for all applications in the petroleum industry, mining industry, geothermal industry, minerals processing, food processing and other high abrasion / high corrosion areas.
AI-1779VC-TDSAI-1779VC refers to a flux cored nickel wire filled with Fused Tungsten Carbide (FTC) granules set within a Nickel matrix including elements of Chrome, Boron, Silicon and ultra-hard (3000HV0.1) refractory carbides. It is designed for semi-automatic welding. AI-1779VC is a special alloy for the protection of wear surfaces against extreme abrasion combined with high corrosion.
Applications: AI-0779VC is designed for welding on all types of steel and for hardfacing cast iron and for repairing oil tools such as stabilizers, openers, gauge bars etc. AI-1779VC can be replaced by AI-1542VC in applications where low magnetic porosity is required. AI-1779VC is recommended for all applications in petroleum drilling, mining, geothermal, minerals processing, brick & tile making, food processing and other high abrasion / high corrosion areas.

TUNGSTEN CARBIDE/CHROMIUM CARBIDE POWDERS FOR BULK WELDING

AI-0710TC-TDSSintered tungsten carbide parts are made from very fine tungsten carbide and cobalt powders which have been well blended and ball milled. The powder is pressed to the desired part configuration and vacuum sintered. The finished parts exhibit an excellent combination of hardness, strength and wear resistance.
Applications Include: Geophysical Drill Bits, Rock Bit Gage Inserts, Mining Tool Bits, Stabilizers and Reamers, Earth Auger Teeth, Stump Cutters, Percussion Drill Bits & Various Mining Tool.
AI-0711TC-TDSTungsten Carbide Cobalt Pellets are made from very fine tungsten carbide and cobalt powders which have been thoroughly blended and ball milled. The powder is pelletized to the required mesh size and sintered. The resultant pellets exhibit an excellent combination or hardness, strength and wear resistance.
Applications include: Hardfacing oilfield tools. Hardfacing mining tools. Hardbanding tool joints.
Hardbanding drill collars.
AI-0712TC-TDSCrushed Sintered Tungsten Carbide Cobalt is made from very fine tungsten carbide and cobalt powders which have been thoroughly blended and ball milled. The powder is sintered and crushed to the required mesh size. The resultant particles exhibit an excellent combination or hardness, strength and wear resistance.
Applications include: Hardfacing oilfield tools, hardfacing mining tools, hardbanding tool joints, and hardbanding drill collars.
AI-0720TC-TDSCast tungsten carbide is a very hard, abrasion resistant metal alloy, produced by melting tungsten in the presence of carbon. Generally, the material is poured into ingot form, crushed into irregular particle shapes and subsequently screened into various U.S. Standard Sieve Sizes.
Applications include: Diamond drill bit matrices, blends with other metal alloys for hardfacing applications, fabrication of Tungsten Carbide tube rods and automatic welding wires, Hardbanding of drill collars and tool joints and hardfacing of rock bits.
AI-0730-TDSChromium carbide nickel-chromium pellets are made from very fine chromium carbide and nickel-chromium powders, which have been well blended and ball milled. The powder is pelletized to the required mesh size and sintered. The resultant pellets exhibit an excellent combination of hardness, strength and wear resistance.
Applications include: Typical applications include: hardfacing oilfield tools, hardfacing mining tools, hardfacing tool joints, and hardfacing drill collars.


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