13.10/2023
POLEMA presented at the“BIOTECHMED” its innovative medical products
11.07/2023
POLEMA at INNOPROM in Ekaterinburg
03.06/2011
Progressive materials for multi-functional vacuum coatings
Application fields of materials for multi-functional vacuum coatings, characteristics of sputtering targets and evaporable sources used for technologies of physical deposition of hardening, protective, decorative and light-reflecting coatings, resistive, switching and transparent electro conductive films.
24.05/2011
Molybdenum and tungsten products for production of leucosapphires
POLEMA JSC is the leading global manufacturer of chromium, molybdenum, tungsten products, metal powders and composite materials.
Welding filler bands
JSC POLEMA produces the following welding filler bands for arched mechanized deposition welding of wear-resistant coatings:
- PL-Np – 300Cr25Si4Ni2Mn2-B-U (PL-AN 101);
- PL-Np – 500Cr40Ni40Si2MnBZr-B-S (PL-AN 111);
- PL-Np – 450Cr20Nb7Mo7W2V-B-U (PL-AN 179-1);
- PL-Np – 450Cr31Mo-B-U.
The bands feature a single-lock construction and consist of a steel coating and a filler powder that ensures a certain chemical composition of the deposited metal.
Dimensions of band cross-section: width – 16.5 ± 1, thickness – 3.8 ± 0,4.
The bands are prepared in reels, wound onto a cassette. Each reel consists of a single strip of band with a mass ranging from 45 to 175 kg. The internal diameter of a reel is 440-480 mm, and the width is 120-160 mm. At the client's request, bands with a mass of 25 kg and above can be delivered
Welding filler band of the brand PL-Np – 300Cr25Si4Ni2Mn2-B-U (PL-AN 101)
Controlled chemical composition of the weld metal
| Mass percentage by element, % | |||||||
| Fe | C | Cr | Ni | Si | Mn | S | P |
| base | 2.3- 3.1 | 22.0 –28.0 |
1.3-3.6 |
2.5-5.0 | 0.5 –2.5 | Maximum 0.04 | Maximum 0.04 |
Hardness of the weld metal in the second layer is 50-56 HRC.
Use
Mechanized welding with an open arc and under flux of AN-20, AN-15M of wear-resistant coatings. protection of the surfaces of machine and equipment parts from intense abrasive and gas-forming wear at normal and high temperatures - for example, contact and intermediate cones belts and pans of loading devices of blast furnaces working at excessive rates.
The band's mass ratio does not surpass 1.15 kg per 1 kg of welded metal.
Welding filler band of the PL-Np – 500Cr40Ni40Si2MnBZr-B-S (PL-AN 111) brand
Controlled chemical composition of the welded metal
| Mass percentage of elements, % | ||||||
| C | Cr | Ni | Si | Mn | B | Zr |
| 4.4-6.0 | 32.0-46.0 | 32.0-46.0 | 1.5-3.5 | Maximum 1.5 | 0.1-0.5 | 0.2-1.0 |
Type of welded metal: Ni -Cr3C2 alloy
The hardness of the welded metal in the second layer is no less than 45 HRC (48-55 HRC – reference data).
Use
Mechanized welding with an open arc and under flux of AN-20, AN-15M of wear-resistant coatings. protection of the surfaces of machine and equipment parts from intense abrasive and gas-forming wear at normal and high temperatures - for example, contact and intermediate cones belts and pans of loading devices of blast furnaces working at excessive rates.
The band's mass ratio does not exceed 1.2 kg per 1 kg of welded metal.
Welding filler band of the PL-Np – 450Cr20Nb7Mo7W2V-B-U (PL-AN 179-1) brand
Controlled chemical composition of the welded metal
| Mass percentage by element, % | |||||||||
| Fe | C | Cr | Nb | Mo | W | V | Si | B | S, P |
| base | 4.0-5.2 | 18.0-23.0 | 5.1-7.5 | 5.2-7.0 | 1.0-2.0 | 0.4-1.0 | 1.0-2.5 | Maximum 0.5 |
no more than 0.04 each |
This band is categorized as a universal welding material and contains fluxing components.
The hardness of the welded metal in the second layer is at least 60 HRC.
Use
Mechanized submerged open arc welding of wear-resistant coatings with increased hardness that resist abrasive and gas-forming wear at normal and high temperatures.
The mass ratio of the band does not exceed 1.2 kg per 1 kg of welded metal.
Welding filler band of the PL-Np–450Cr31Mo-B-U brand
Controlled chemical composition of the welded metal
| Mass percentage of elements, % | |||||
| Fe | C | Cr | Mo | S | P |
| base | 4.0-5.2 | 26.5-35.5 | 0.5-1.5 | no more than 0.04 | no more than 0.04 |
On the client's request, different requirements can be set for the chemical composition of the welded metal
The hardness of the welded metal in the second layer is at least 58 HRC.
Use
Mechanized open arc welding of wear-resistant coatings with increased hardness. Protects the surface of machine and equipment parts from intense abrasive and gas-forming wear at normal and high temperatures.
The control method for the welding and technological properties of bands, chemical composition and hardness of the welded metal are based on the client' requests.
