DG.5522 High-performance agglomerated sintered tungsten carbide thermal spray powder | High corrosion resistance and anti-slip wear special powder

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

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.

To verify the product's corrosion resistance, this product underwent a rigorous neutral salt spray test. The test standards are as follows: 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.

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.

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.