PTA Welding

Plasma is a kind of gas; it becomes ionized when heated to extremely high temperature, thus producing electrical conductivity. The plasma transfer arc technology is able to transfer the electric arc to the screw flight. The metal or powder to be welded will be melted and combined by the strong heat from the electric arc, and form the alloy layer on the screw flight top.

PTA (Plasma Transferred Arc) Welding is widely used in the plastics processing industry to enhance the wear resistance and durability of screw flights. Compared with conventional welding methods, PTA technology provides precise control of the welding process, allowing alloy materials to be deposited accurately onto critical wear areas. This helps create a strong metallurgical bond between the alloy layer and the base material, improving the overall performance and longevity of the screw.

The alloy layer formed through PTA Welding can significantly improve resistance to abrasion, corrosion, and high-temperature operating conditions. As a result, screws treated with PTA technology are particularly suitable for processing engineering plastics, glass-fiber reinforced materials, mineral-filled compounds, and other demanding materials that can accelerate component wear. By protecting the screw flight surface, PTA Welding helps maintain processing efficiency and reduce maintenance frequency.

Leveraging extensive experience in screw manufacturing and surface engineering technologies, TAN STAR INDUSTRIES INC. applies PTA Welding solutions to support customers requiring enhanced screw performance in extrusion and injection molding applications. The combination of precision welding technology and carefully selected alloy materials helps extend component service life while contributing to more stable production and lower operating costs.
S-59 #56
The PTA Welding S-59 #56 Screw is designed to provide reliable corrosion resistance and stable processing performance for a wide range of plastic processing applications. Utilizing a nickel (Ni) and chromium (Cr) alloy deposited through Plasma Transferred Arc (PTA) Welding technology, the S-59 #56 creates a durable alloy layer on the screw flight, helping improve component longevity and operational reliability.

With an inlay hardness of HRC 52–55, the S-59 #56 offers a balanced combination of wear resistance and corrosion protection for applications involving general engineering plastics and materials with low levels of abrasive fillers. The PTA Welding process creates a strong metallurgical bond between the alloy layer and the base material, contributing to consistent performance under continuous production conditions.

The S-59 #56 is particularly recommended for processing materials with glass fiber content up to 10%, where corrosion resistance is a more significant concern than extreme wear resistance. Its nickel-chromium alloy composition helps protect critical screw surfaces from chemical attack while maintaining stable processing performance in extrusion and injection molding operations.

Leveraging TAN STAR INDUSTRIES INC.'s expertise in screw manufacturing and advanced PTA Welding technology, the S-59 #56 provides a dependable solution for manufacturers seeking improved corrosion resistance, reduced maintenance requirements, and long-term processing stability. It is an ideal choice for applications that demand reliable performance and cost-effective operation.
Main Base:Ni
  • Other Component:Cr
  • Inlay Hardness:HRC 52-55
  • Wear Resistance:★★★
  • Corrosion Resistance:★★★★
  • Application:Glass Fiber≦10%
S-59 #88
The PTA Welding S-59 #88 Screw is designed to provide a balanced combination of wear resistance and corrosion protection for demanding plastic processing applications. Utilizing a nickel-based alloy enhanced with chromium (Cr) and tungsten (W), the S-59 #88 forms a durable alloy layer on the screw flight through Plasma Transferred Arc (PTA) Welding technology, helping improve both component durability and processing reliability.

With an inlay hardness of HRC 58–60, the S-59 #88 offers enhanced resistance to wear and surface degradation compared with standard screw materials. The PTA Welding process creates a strong metallurgical bond between the alloy layer and the base material, allowing the screw to maintain stable performance under continuous production conditions and challenging processing environments.

The S-59 #88 is particularly suitable for processing materials containing glass fiber up to 25%, where both abrasion resistance and corrosion protection are important considerations. Its alloy composition helps protect critical screw surfaces from wear caused by reinforced materials while also providing resistance against corrosive additives commonly found in engineering plastics and specialty compounds.

Leveraging TAN STAR INDUSTRIES INC.'s expertise in screw manufacturing and advanced PTA Welding technology, the S-59 #88 delivers dependable performance for extrusion and injection molding applications. By reducing wear-related maintenance and supporting stable material processing, it helps manufacturers improve productivity, extend component service life, and lower long-term operating costs.
Main Base:Ni
  • Other Component:Cr/W
  • Inlay Hardness:HRC 58-60
  • Wear Resistance:★★★★
  • Corrosion Resistance:★★★★
  • Application:Glass Fiber≦25%
S-59 #12
The PTA Welding S-59 #12 Screw is designed to provide enhanced corrosion resistance for plastic processing applications where chemical attack and material degradation are primary concerns. Utilizing a cobalt-based alloy enhanced with chromium (Cr) and tungsten (W), the S-59 #12 forms a protective alloy layer on the screw flight through Plasma Transferred Arc (PTA) Welding technology, helping improve component durability and operational reliability.

With an inlay hardness of HRC 44–48, the S-59 #12 is engineered to deliver reliable corrosion protection while maintaining stable processing performance. The PTA Welding process creates a strong metallurgical bond between the alloy layer and the base material, helping protect critical screw surfaces from corrosive additives and aggressive processing environments commonly encountered in plastic manufacturing.

The S-59 #12 is particularly suitable for applications involving materials with glass fiber content up to 10%, where corrosion resistance is more critical than extreme wear resistance. Its cobalt-based alloy composition provides dependable protection against chemical attack, helping reduce maintenance requirements and extend component service life during extrusion and injection molding operations.

Leveraging TAN STAR INDUSTRIES INC.'s expertise in screw manufacturing and advanced PTA Welding technology, the S-59 #12 offers a practical solution for processors seeking improved corrosion resistance, stable production performance, and long-term operational reliability. It is well suited for applications that require consistent processing quality and dependable component protection under challenging operating conditions.
Main Base:Co
  • Other Component:Cr/W
  • Inlay Hardness:HRC 44-48
  • Wear Resistance:★★★☆
  • Corrosion Resistance:★★★★
  • Application:Glass Fiber≦10%

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