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High-Performance DG.5522 Agglomerated Sintered Tungsten Carbide Powder from China | Suppliers & Factory for Corrosion Resistance
⚙️ Core Basic Parameters
🛠️ Production Process
Agglomeration sintering (excellent powder sphericity, stable flowability, uniform spray deposition, and high coating density)
🔬 Chemical Composition
C 8.5%, Co 2.7%, W 22.5%, Ni 14.5%, Fe ≤0.1%, Cr balance
💎 Coating Hardness
1000~1100HV, high hardness for excellent wear resistance
🔗 Coating Bond Strength
>70MPa, strong adhesion, not prone to peeling or flaking, excellent coating stability
⚖️ Loose Bulk Density
3.05g/cm³
📏 Optional Particle Sizes
5-30μm, 10-38μm, 15-45μm (multiple specifications available to suit different workpiece precision and spraying equipment requirements)
🔄 Compatible Processes
HVOF supersonic spraying, APS plasma spraying, strong process compatibility, high mass production stability
🚀 Core Product Advantages
1
High cost-effectiveness, suitable for mass production needs
Utilizing a low-tungsten carbide ratio design, it avoids the high cost drawbacks of traditional high-tungsten powders, achieving balanced overall performance and significantly reducing enterprise coating production costs, making it suitable for mass production of workpieces.
2
Outstanding resistance to sliding wear
The uniform distribution of hard carbide phases results in high coating hardness and a dense microstructure. For various mechanical sliding friction and minor erosion conditions, its wear resistance life far exceeds that of ordinary alloy powder coatings.
3
Moderate impact resistance and toughness
It avoids the brittleness defects of high hardness, balancing hardness and toughness, making it suitable for minor alternating loads and vibration conditions, effectively preventing coating cracking and peeling.
4
High-nickel formula, enhanced corrosion resistance
With a 14.5% high nickel content ratio, compared to conventional tungsten carbide powder, its resistance to acid and alkali corrosion, salt spray corrosion, and humid media corrosion is significantly improved, making it suitable for corrosive conditions such as marine, chemical, and humid outdoor environments.
5
Strong coating stability
The powder formed by the agglomeration sintering process has high purity and extremely low impurities. After spraying, the coating has no obvious pores, uniform structure, high bonding strength, and is not prone to failure during long-term service.
🧪 Authoritative Salt Spray Performance Test (NSS Neutral Salt Spray Test)
Test Conclusion: After 100 hours of continuous neutral salt spray testing, the coating prepared with DG.5522 powder remained intact, showing no rust, peeling, or flaking. The trace rust on the coating surface was confirmed to originate from substrate migration, fully demonstrating that this coating possesses excellent resistance to salt spray and electrochemical corrosion, making it suitable for long-term use in marine, outdoor, and chemical corrosion environments.
🎯 Typical Application Scenarios
With its comprehensive advantages of wear resistance, corrosion resistance, high toughness, and cost-effectiveness, DG.5522 is widely used in heavy-duty wear-resistant and corrosion-resistant parts across various industries:
📄 Paper Industry
Wear-resistant and corrosion-resistant coatings for various papermaking rollers, drive rollers, and pressing rollers.
⚡ Power Equipment
Wear-resistant and anti-cavitation coatings for compressor blades and fan impellers.
⚓ Offshore Oil
Corrosion-resistant and wear-resistant coatings for hydraulic rods, piston rods, and transmission components in offshore extraction equipment.
⚙️ General Machinery
Precision wear-resistant parts subjected to sliding friction, minor impacts, and corrosive conditions.
📋 Product Summary
DG.5522 precisely balances wear resistance, corrosion resistance, toughness, and cost, making it a versatile, high-performance tungsten carbide thermal spray powder with no major weaknesses. It addresses the shortcomings of ordinary alloy powders, such as poor wear resistance and susceptibility to corrosion, while avoiding the excessively high cost of high-end tungsten carbide powders. Suitable for most industrial wear-resistant and corrosion-resistant spraying applications, it is an excellent choice for industrial mass production, replacing traditional spraying materials and reducing costs while increasing efficiency.
❓ Frequently Asked Questions (FAQ)
What are the primary chemical components of DG.5522?
DG.5522 consists of C 8.5%, Co 2.7%, W 22.5%, Ni 14.5%, Fe ≤0.1%, and a balance of Cr. This specific composition balances wear resistance and corrosion resistance.
What spraying processes are compatible with DG.5522 powder?
This powder is highly compatible with both HVOF (High-Velocity Oxygen-Fuel) supersonic spraying and APS (Atmospheric Plasma Spraying) processes.
How does DG.5522 perform under corrosive salt spray conditions?
In a 100-hour Neutral Salt Spray (NSS) test, the coating prepared with DG.5522 remained completely intact without showing any rust, peeling, or flaking, demonstrating excellent corrosion resistance.
Why is DG.5522 considered highly cost-effective?
It utilizes a low-tungsten carbide ratio design, avoiding the high costs associated with traditional high-tungsten powders while maintaining reliable wear and corrosion resistance, making it ideal for mass production.
What is the hardness and bonding strength of the DG.5522 coating?
The coating achieves a hardness of 1000~1100HV for high wear resistance, and a strong bonding strength of greater than 70MPa to prevent peeling or flaking under load.
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