HVOF Spray Coating

Bimetallic HP/HVOF spray coating is a thermal spraying technology used to improve or enhance the properties of the screw surface, such as resistance to corrosion, resistance to high temperature oxidation, insulation, thermal conduction, resistance to wear, to extend the service life of the screw.

HVOF (High Velocity Oxygen Fuel) Spray Coating is widely recognized as an advanced surface engineering technology capable of producing dense, strongly bonded coatings with excellent durability. By applying specialized alloy materials to the screw surface at extremely high velocity, the coating forms a protective layer that helps reduce wear and surface degradation under demanding processing conditions. This makes HVOF coating particularly beneficial for screws operating in environments involving abrasive fillers, corrosive additives, or elevated processing temperatures.

In plastic extrusion and injection molding applications, screw surfaces are continuously exposed to friction, pressure, and chemically aggressive materials. Over time, these conditions can accelerate wear and negatively affect processing performance. HVOF Spray Coating helps protect critical screw surfaces, allowing manufacturers to maintain more stable production conditions, reduce maintenance requirements, and extend component service life.

Leveraging extensive experience in screw and barrel manufacturing, TAN STAR INDUSTRIES INC. integrates advanced surface engineering technologies such as HVOF Spray Coating into its comprehensive processing solutions. This technology is suitable for a wide range of plastic processing applications where improved wear resistance, corrosion protection, and long-term operational reliability are essential for maintaining productivity and product quality.
S-42
The HVOF Spray Coating S-42 Screw is engineered for demanding plastic processing applications requiring exceptional wear resistance and long-term operational reliability. Utilizing a tungsten carbide (WC) and cobalt (Co) coating applied through High Velocity Oxygen Fuel (HVOF) technology, the S-42 provides a dense and highly durable surface layer capable of withstanding severe abrasive wear conditions.

With a coating hardness of HV 1100–1400, the S-42 delivers outstanding protection against wear caused by glass fiber reinforced plastics, mineral-filled compounds, and other abrasive materials. The advanced HVOF coating process creates a strong bond between the coating and the screw substrate, helping maintain coating integrity and stable processing performance during continuous production.

The S-42 is particularly recommended for applications involving materials with glass fiber content up to 60%, where conventional screw materials may experience accelerated wear. Its combination of excellent wear resistance and strong corrosion resistance helps extend component service life, reduce maintenance frequency, and improve overall production efficiency.

Leveraging TAN STAR INDUSTRIES INC.'s expertise in screw manufacturing and surface engineering technologies, the HVOF Spray Coating S-42 provides a high-performance solution for extrusion and injection molding applications requiring enhanced durability, stable processing conditions, and long-term cost effectiveness.
Main Base:WC
  • Other Component:Co
  • Inlay Hardness:HV 1100-1400
  • Wear Resistance:★★★★★
  • Corrosion Resistance:★★★★☆
  • Application:Glass Fiber≦60%
S-75
The HVOF Spray Coating S-75 Screw is designed for plastic processing applications that require exceptional corrosion resistance while maintaining reliable wear performance. Utilizing a nickel (Ni) and chromium (Cr) coating applied through High Velocity Oxygen Fuel (HVOF) technology, the S-75 provides a dense and highly protective surface layer capable of withstanding corrosive processing environments and demanding production conditions.

With a coating hardness of HV 900–1100, the S-75 delivers an excellent balance of wear resistance and corrosion protection. The advanced HVOF coating process creates a strong bond between the coating and the screw substrate, helping maintain coating integrity and long-term processing stability. This makes the S-75 particularly suitable for applications where corrosive additives, flame retardants, or chemically aggressive materials may accelerate component deterioration.

The S-75 is recommended for processing materials with glass fiber content up to 40%, offering dependable protection against both wear and corrosion. Its superior corrosion resistance helps extend component service life, reduce maintenance requirements, and improve operational reliability in continuous extrusion and injection molding operations.

Leveraging TAN STAR INDUSTRIES INC.'s expertise in screw manufacturing and advanced surface engineering technologies, the HVOF Spray Coating S-75 provides a durable solution for processors seeking enhanced corrosion resistance, stable production performance, and lower long-term operating costs. It is an ideal choice for demanding plastic processing environments where both component longevity and processing consistency are critical.
Main Base:Ni
  • Other Component:Cr
  • Inlay Hardness:HV 900-1100
  • Wear Resistance:★★★★☆
  • Corrosion Resistance:★★★★★
  • Application:Glass Fiber≦40%

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