RD-569
Cement plant extrusion roller pattern layer overlay welding
RD-569
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Cement plant extrusion roller pattern layer overlay welding
| The post-weld material is martensitic/bainitic, containing very fine, very hard niobium carbide, which gives the post-weld material containing the initial carbide excellent resistance to wear, medium impact resistance, and high resistance to spalling; the post-weld material is not suitable for flame cutting, cannot be machined, and has fine stress cracks on the surface. | |
| 1.Microstructure: Iron-based niobium-containing high-carbon, high-chromium wear-resistant alloys；Alloy Type：C-Cr-Nb-Fe | 2.Processing performance: only support sanding |
| 3.Cutting performance: does not support flame cutting | 4.Surfacing thickness: supports multi-layer surfacing,Overlay thicknesses of 8-16 mm |
| Ideally suited for hardfacing parts subjected to high levels of wear and general impact. Examples include extrusion roll patterns, grinding roll surfaces and pulverizer rolls with high abrasion resistant surfaces. Application temperature range up to 500°C. |
| C | Cr | Mn | Si | P | S | Ni | Mo | Nb | W | Others |
| 4.0-6.0% | 20-25% | 0.5-1.5% | 0.5-1.5% | ≤0.04% | ≤0.04% | / | 3.0-5.0% | 5.0-7.0% | 1.0-2.0% | ≤1.0% |
| HRC 60-65 | 125/150/250 KG/Barrel |
| Wire Diameter | Current | Voltage | Wire Stick-out Length |
| 2.4/2.8/3.2mm | 250-430A | 27-32V | 25-40mm |
1. When using RD-569 wire, do not use inert gas, and take care to control the current and voltage according to the recommended overlay welding parameters. 2. The overlay layer will have normal fine stress relief cracks, which will help to prevent the occurrence of large-scale spalling of the overlay layer. 3. Before surfacing, please pay attention to removing ash, oil, rust and corrosion in the area to be welded. 4. Oscillating and linear welding are available, can be overlaid with multiple layers, the performance of the alloy layer is related to the dilution rate of the overlaid welding. 5. Preheating can reduce stress cracks. |
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