Powders for Powder Welding
Introduce
| Process Heat Source | Oxy-Acetylene Torch |
| Characteristics | 1. user friendly and energy-efficient, requiring only flame regulation. 2. Little to no machining work required after production. |
| Process | In conventional powder welding, an oxy-acetylene torch heats the target component while a powder hopper injects alloy particles into the gas stream. The flame delivers the powder to the heated surface, where it metallurgically bonds via diffusion and alloying. |
| Typical Process Characteristics | (1) Deposition efficiency: 0.5-2.5 kg/hour (2) Strong bonding |
| Appliocation | 1. It is widely used in ball valves, injection molding machine screws, glass molds, and shield cutter tools. 2. The powder welding process is commonly used for repairs, especially for restoring cast iron and machined components, such as rebuilding edges and corners. |
| Coating | Smooth and dense surface; forms a diffusion-bonded coating with the substrate. |
Powders for Powder Welding
CMI Ni20
Nickel based (NiSF) overlay welding powders
Particle size: 90/25µm
Chemistry: Ni 2.1Si 0.8B 0.8Fe 4.5Cr 2P 0.03C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 22 HRC (Powder welding)
Application: Metal-seated Ball Valve Body, Glass mould, Injection Molding Machine Screw, TBM (Tunnel Boring Machine) Cutter Teeth
CMI Ni55A
Nickel based (NiSF) overlay welding powders
Particle size: 109/45 µm
Chemistry: Ni 4.2Si 2.9B 4.5Fe 15.5Cr 0.7C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 55 HRC （Powder welding）
Application: Metal-seated Ball Valve Body
CMI Ni60
Nickel based (NiSF) overlay welding powders
Particle size: 109/45 µm
Chemistry: Ni 4.2Si 3.3B 13Fe 17Cr 0.9C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 60 HRC （Powder welding）
Application: Metal-seated Ball Valve Body, Laminar Cooling Roller
CMI Ni60A
Nickel based (NiSF) overlay welding powders
Particle size: 109/45 µm
Chemistry: Ni 4.4Si 3.2B 3.5Fe 17Cr 0.8C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 60 HRC （Powder welding）
Application: Metal-seated Ball Valve Body, Laminar Cooling Roller
CMI Ni60ACuMo
Nickel based (NiSF) overlay welding powders
Particle size: 109/45 µm
Chemistry: Ni 3.8Si 3B 4.5Fe 16Cr 2.5Mo 2.5Cu 0.6C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 55 HRC （Powder welding）
Application: Metal-seated Ball Valve Body
CMI Ni65
Nickel based (NiSF) overlay welding powders
Particle size: 109/45 µm
Chemistry: Ni 4.6Si 3.6B 4.5Fe 19Cr 1.2C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 64 HRC (Powder welding)
Application: Metal-seated Ball Valve Body
CMI Ni22AA
Nickel based (NiSF) overlay welding powders
Particle size: 90/25µm
Chemistry: Ni 2.7Si 0.9B 0.8Fe 2P 0.03C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 25HRC (Powder welding)
CMI Ni31
Nickel based (NiSF) overlay welding powders
Particle size: 90/25µm
Chemistry: Ni 3.2Si 0.9B 0.8Fe 3.6Cr 1.8P 0.02C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 32 HRC (Powder welding)
CMI Ni35A
Nickel based (NiSF) overlay welding powders
Particle size: 109/53µm
Chemistry: Ni 3.6Si 1.6B 2.5Fe 9.5Cr 0.3Cu 0.35C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 36 HRC (Powder welding)
CMI Ni40A
Nickel based (NiSF) overlay welding powders
Particle size: 109/53µm
Chemistry: Ni 3.8Si 1.6B 3.5Fe 10Cr 0.35C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 41 HRC (Powder welding)
CMI Ni45A
Nickel based (NiSF) overlay welding powders
Particle size: 109/53µm
Chemistry: Ni 3.2Si 2.4B 3.5Fe 9Cr 0.4C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 45 HRC （Powder welding）
CMI Ni50
Nickel based (NiSF) overlay welding powders
Particle size: 109/53µm
Chemistry: Ni 4Si 2.3B 4.0Fe 12Cr 0.48C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 50 HRC （Powder welding）
CMI Ni55
Nickel based (NiSF) overlay welding powders
Particle size: 109/53 µm
Chemistry: Ni 3.8Si 3.0B 3.5Fe 16Cr 2.5Mo 3.0Cu 0.6C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 56 HRC （Powder welding）
Application: Metal-seated Ball Valve Body
CMI Ni60AA
Nickel based (NiSF) overlay welding powders
Particle size: 109/53 µm
Chemistry: Ni 4.4Si 3.2B 3.5Fe 17Cr 0.8C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 60 HRC （Powder welding）
CMI Ni60B
Nickel based (NiSF) overlay welding powders
Particle size: 109/53 µm
Chemistry: Ni 3.4Si 3.8B 24Fe 16Cr 0.9C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 60 HRC （Powder welding）
CMI Ni60L
Nickel based (NiSF) overlay welding powders
Particle size: 109/53 µm
Chemistry: Ni 4.5Si 3.5B 0.8Fe 8Cr 0.05C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 60 HRC （Powder welding）
CMI Ni62
Nickel based (NiSF) overlay welding powders
Particle size: 109/53 µm
Chemistry: Ni 4.5Si 3.5B 13Fe 17Cr 1C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 62 HRC （Powder welding）
CMI Ni65F
Nickel based (NiSF) overlay welding powders
Particle size: 109/53 µm
Chemistry: Ni 4.6Si 3.6B 12Fe 19Cr 1.2C
Powder type: Gas atomised
Typical deposition techniques: Powder welding
Hardness: 64 HRC （Powder welding）