RD-138
Cement grinding rolls, grinding discs, extrusion rolls, crusher rotors priming/transition layer surfacing
Product details:
RD-138
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Cement grinding rolls, grinding discs, extrusion rolls, crusher rotors priming/transition layer surfacing
Material Characteristics
| The post-weld material is an extremely tough, crack-resistant cladding material with high extrusion stress, austenitic in nature, and characterized by hardening (work hardening) when impacted. | |
| 1.Microstructure: Austenitic chromium-manganese steel；Alloy Type：C-Cr-Mn-Fe | 2.Processing performance: only support sanding |
| 3.Cutting performance: does not support flame cutting | 4.Surfacing thickness: supports multi-layer surfacing |
Applications
| Typically used as an overlay transition and priming layer to facilitate overlaying of harder overlay materials: e.g. transition/priming layer for overlaying of grinding rolls, grinding discs, extrusion rolls, crusher rotors; also used in the manufacture or repair of crane wheels, rope pulleys, wire-drawing discs, etc... |
Main chemical composition of pure welding layer
| C | Cr | Mn | Si | P | S | Ni | Mo | Nb | W | Others |
| 0.1-0.2% | 9.0-15.0% | 15-20% | 0.5-1.0% | ≤0.04% | ≤0.04% | 0.2-0.8% | / | / | / | ≤1.0% |
Hardness of pure welding layer Packaging specification
| HRC 20-40 | 125/150/250 KG/Barrel |
Recommended Surfacing Parameters
| Wire Diameter | Current | Voltage | Wire Stick-out Length |
| 2.4/2.8/3.2mm | 250-430A | 27-32V | 25-40mm |
Welding Precautions
1. When using RD-138 welding wire, do not use inert gas, and pay attention to control the current and voltage according to the recommended surfacing parameters. 2. Oscillating and straight line welding can be, can be overlaid with multiple layers, the performance of the alloy layer and the dilution rate of the overlaid welding. 3. Each layer of weld should be cleaned up after welding slag before welding the next layer, and so on. |
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