Powder Blends for Coatings
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.
Below are examples of product names:
PB-85CrC+15Cr20Ni80,
PB-75CrC+25Cr20Ni80,
PB-65CrC+35Cr20Ni80,
PB-85CrC+15Al5Ni,
PB-70CrC+30Al5Ni,
PB-85NiCr17Si4B4+15Al10Ni,
PB-70NiCr17Si4B4+30Fe
PSD, micron: below 40, 20-63, 40-100, 90-160, 100-280 or other PSD as agreed.
You can contact our sales managers for more details at:
export_polema@metholding.com,
tel.: +7(4872)25-06-76.
|
Name |
Composition |
Application |
|
PB-85CrC+ 15Cr20Ni80 |
85 % of Cr carbide and 15 % of Ni-20Cr alloy |
Plasma spraying forms dense, strong, and hard layers (55-62 HRC) resistant to abrasive wear at 540-840 °C. Dies and stamps, valve seats, GTE seals, heat exchangers, turbomachinery, etc. |
|
PB-75CrC+ 25Cr20Ni80 |
75 % of Cr carbide and 25 % Ni-20Cr alloy |
|
|
PB-65CrC+ 35Cr20Ni80 |
65 % of Cr carbide and 35 % Ni-20Cr alloy |
|
|
PB-85CrC+ 15Al5Ni |
85 % of Cr carbide and 15 % of conglomerated thermoreactive Ni-Al powder |
High-wear resistance coatings on stainless and nickel alloys |
|
PB-70CrC+ 30Al5Ni |
70 % of Cr carbide and 30 % of conglomerated thermoreactive Ni-Al powder |
|
|
PB-85NiCr17Si4B4+ 15Al10Ni |
85 % of self-fluxing Ni-17Cr-4Si-4B alloy and 15 % of conglomerated thermoreactive Ni-Al powder |
Coatings resistant to wear, fretting, corrosion. Crankshafts, piston rings, steering bearings, brake drums, forks, gauges, seals, dies, etc. |
|
PB-70NiCr17Si4B4+ 30Fe |
70 % of self-fluxing Ni-17Cr-4Si-4B alloy and 30 % of iron powder |
Forms dense wear-resistant layers. Coatings are processed with hard alloys. Hardness is 45-50 HRC.
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