High-Performance AG.5522 Tungsten Carbide Thermal Spray Powder | China Suppliers & Factory for Corrosion Resistance and Wear Protection
Core Basic Parameters
Agglomeration sintering (excellent powder sphericity, stable flowability, uniform spray deposition, and high coating density)
C 8.5%, Co 2.7%, W 22.5%, Ni 14.5%, Fe ≤0.1%, Cr balance
1000~1100HV, high hardness for excellent wear resistance
>70MPa, strong adhesion, not prone to peeling or flaking, excellent coating stability
3.05g/cm³
5-30μm, 10-38μm, 15-45μm (multiple specifications available to suit different workpiece precision and spraying equipment requirements)
HVOF supersonic spraying, APS plasma spraying, strong process compatibility, high mass production stability
Core Product Advantages
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.
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.
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.
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.
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 Standards: Test solution: 50g/L sodium chloride solution; Solution pH: 6.8-7.2; Test temperature: 35±2℃; Salt spray deposition: 1.5ml/80cm²·h; Test duration: 100 hours.
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:
Wear-resistant and corrosion-resistant coatings for various papermaking rollers, drive rollers, and pressing rollers
Wear-resistant and anti-cavitation coatings for compressor blades and fan impellers
Corrosion-resistant and wear-resistant coatings for hydraulic rods, piston rods, and transmission components in offshore extraction equipment
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
What is the production process of DG.5522 powder and its benefits? ▼
DG.5522 is produced using the Agglomeration Sintering process. This method ensures excellent powder sphericity, stable flowability, uniform spray deposition, and high coating density.
What is the chemical composition of DG.5522? ▼
The chemical composition consists of C 8.5%, Co 2.7%, W 22.5%, Ni 14.5%, Fe ≤0.1%, and Cr balance.
How does the coating perform in corrosion resistance tests? ▼
In a 100-hour continuous neutral salt spray (NSS) test, the coating prepared with DG.5522 powder remained completely intact, showing no signs of rust, peeling, or flaking.
What spraying processes are compatible with DG.5522? ▼
It is highly compatible with HVOF (supersonic spraying) and APS (plasma spraying) processes, offering high mass production stability.
Why is DG.5522 considered highly cost-effective? ▼
By utilizing a low-tungsten carbide ratio design, it avoids the high cost of traditional high-tungsten powders while maintaining high hardness (1000~1100HV) and strong corrosion resistance due to its 14.5% nickel content.
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