Cobalt Alloys for Coatings
01
Description
Recently, the company has been actively implementing new technical solutions for gas atomizing, which significantly improve the morphology of particles, reduce the number of satellites, and increase the fluidity of powders and the quality of weld coatings.
Atomized powders produced by JSC POLEMA are classified into two groups: powders for coatings and structural powders.
The first group includes over 200 types of powders for coatings using various methods, including self-fluxing nickel, iron, and copper alloys, tool steels, high-carbon and low-carbon steels and alloys, corrosion-resistant and heat-resistant steels and alloys, as well as tin- and zinc-based composite powders and alloys.
The variety of available powders for coatings, used in high-speed, detonation, gas-flame, and plasma spraying, gas-powder, plasma, induction, and laser welding, allows to solve specific problems of surface hardening and effective protection against wear and corrosion of machines and equipment parts operating under elevated temperatures, high mechanical stress, and with abrasive substances and in aggressive environments.
The second group includes structural powders, such as pressed powders of pure metals (chromium, molybdenum, tungsten, nickel, and titanium), copper-based alloys (bronze and brass), stainless steels, special alloys with high magnetic permeability (permalloys), and materials for shot jet processing of parts (tool steels).
Powders of this group are used for making sheet rolled products, bars, and non-ferrous and refractory metal forgings, tools, sintered and deformed parts, composite materials used in electrical engineering, electronics, tool engineering, machine engineering, aerospace industry, nuclear power engineering, vehicles, filters, gas absorbers, and other engineering areas.
02
specifications
Cobalt alloy powders are used in face-hardening technologies and in restoring machine components and equipment that operates in aggresive environments, abrasion and high temperature. Plasma coatings of cobalt alloys provide the surface with resistance to corrosion, erosion, and abrasive wear and maintain a sufficiently high hardness in temperatures as high as 8000 С.
The powders are applied to components of valves, valve seats, rotors, shafts, bearings in pumping devices in the oil & gas industry, parts of grinding machines, mixers, moulds, and, in drilling technology, to components of drill bits (3V16K powder), etc.
Powders are produced by gas spraying (the particles are spherical).
The powders are applied to components of valves, valve seats, rotors, shafts, bearings in pumping devices in the oil & gas industry, parts of grinding machines, mixers, moulds, and, in drilling technology, to components of drill bits (3V16K powder), etc.
Powders are produced by gas spraying (the particles are spherical).
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advantages
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Profound production experience
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Strict quality control of all produced materials
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In-house research laboratory
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Flexible discount system
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Product names
Below are examples of product names:
AP-CoCr30Ni6WSiB (AN34); AP-CoCr30Ni2WSi (AN35); AP-CoCr30WSi (V3K); AP-CoCr26W14Si (3V16K); AP-CoCr33W18Si.
Particle size (base grains), microns: -40 (45), -50, less than 100, 40-100, 45-106, 63-200 (160), 80-160, 160-280, 160-400, 280-400 etс.
The hardness of coatings depends on the manner in which the coatings are sprayed and deposited. The hardness of coatings obtained using the plasma spraying method, following thermal treatment, ranges from 42-50 HRC.
You can contact our sales managers for more details at:
export_polema@metholding.com,
tel.: +7(4872)25-06-76.
05
chemical composition
Chemical composition:
| Grade | Nominal composition, % | |||||||
| Co | Cr | W | Ni | Si | B | C | Fe | |
| AP-CoCr30Ni6WSiB (AN34) | base | 30 | 4,5 | 6 | 2 | 0,8 | 0,8 | ≤3 |
| AP-CoCr30Ni2WSi (AN35) | base | 30 | 4,5 | 2 | 2 | - | 1,5 | ≤3 |
| AP-CoCr30WSi (V3K) | base | 30 | 4,5 | 1,2 | 2,5 | ≤0,1 | 1,1 | ≤2 |
| AP-CoCr26W14Si (3V16K) | base | 26 | 14 | ≤3 | 0,75 | - | 3,2 | ≤5 |
| AP-CoCr33W18Si | base | 33 | 17,5 | ≤3 | 1,5 | - | 2,3 |
≤5 |
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miscellaneous
Powders are produced by gas spraying (the particles are spherical).
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Application areas