Hardfacing Welding Electrodes TWD 350 (Standards: DIN 8555: E I-UM-350/ EN14700:E Fel) wear-resistant overlay welding rod is specially designed to enhance the durability of manganese-chromium-vanadium (Mn-Cr-V) alloy components, particularly suitable for applications such as switches, crawler rollers, chain support rollers, sprockets, guide rollers, etc., which are subjected to high-intensity wear and impact. The overlay layer of this welding rod not only possesses excellent wear resistance but also maintains excellent machinability, allowing for processing with hard alloy tools. This facilitates post-welding size adjustment and surface refinement.
Hardness of the pure weld deposit approx. 370 HB
l layer on steel with C= 0,5 % approx.420 HB
Chemical Composition of Deposited Metal(%)
| Test item | C | Si | Mn | Cr | Fe | |
| Result | 0.2 | 1.2 | 1.4 | 1.9 | bal. | |
Current type DC(+)/AC
Core features of the product:
High-intensity wear-resistant protection: The welded metal has high hardness and excellent anti-wear properties, significantly extending the service life of components in harsh conditions.
Impact resistance and fatigue performance: Suitable for components subjected to repeated loads and impacts. The weld overlay layer has good toughness, reducing the risks of cracking and spalling.
Excellent welding process performance: The welding rod operates smoothly, the arc is stable, the spatter is minimal, the weld seam is uniformly formed, and it is easy to achieve high-quality overlay layers.
Post-welding processability: The weld overlay layer can be machined using carbide tools, facilitating on-site repair and precision control, and reducing the overall maintenance cost.
Widely applicable: In addition to manganese-chromium-vanadium alloy, it is also suitable for wear-resistant overlay welding and repair of other low-alloy steels and some high-strength steel substrates.
Typical application scenarios:
Welding is carried out on wear-resistant components such as railway switches, crawler rollers of construction machinery, conveyor sprockets, and support rollers of mining equipment.
Repair and reinforcement of various wear-prone parts such as rollers, gears, and shafts
Protection of equipment components operating under the combined conditions of impact and abrasive wear
