High-Performance Agglomerated Sintered Tungsten Carbide Thermal Spray Powder - China Suppliers & Factory for Corrosion Resistance
Core Basic Parameters
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
Frequently Asked Questions (FAQ)
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 formulation balances cost-effectiveness with high performance.
It features strong process compatibility and is highly suitable for both HVOF (supersonic spraying) and APS (plasma spraying) processes, ensuring high mass production stability.
Due to its high-nickel formula (14.5% Ni), it offers excellent resistance to acid, alkali, salt spray, and humid media. In an authoritative 100-hour Neutral Salt Spray (NSS) test, the coating remained completely intact with no rust, peeling, or flaking.
The agglomeration sintering process delivers excellent powder sphericity, stable flowability, uniform spray deposition, high purity, low impurities, and high coating density with minimal porosity.
The coating achieves a high hardness of 1000~1100HV for outstanding wear resistance, combined with a strong bond strength of >70MPa, which prevents peeling and flaking.
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