 
Bimetallic Barrel Manufacturer & Supplier
Bimetallic barrel is a high-performance component used in extrusion and injection molding machines to improve durability, processing efficiency, and machine performance. This was developed specifically for extreme plastic processing environments where traditional barrels could suffer from excessive wear, corrosion, and overheating.
The bimetallic barrel is formed by combining a strong outer base steel layer with the inner alloy of high wear resistance. This construction offers outstanding resistance to abrasives, high processing temperatures, as well as corrosive contact with polymers and the continual stresses of production.
Tungsten Carbide Bimetallic barrel are extensively employed in the fields of plastic extrusion, injection molding, recycling, compounding, and other polymer processing applications on account of their higher strength coupled with longer service life.
Manufacturer & Supplier of top-quality Bimetallic Barrels used in the process of extrusion machines, injection molding machines, blown film plant, pipe extrusion line, profile extruder, plastics processing industries, masterchant production, and recycling Applications.
Tungsten Carbide Bimetallic Barrel Material
A bimetallic barrel consists of two important layers that work together to provide maximum performance:
1. Base Material (Outer Layer)
Barrel is manufactured using high-strength alloy steel materials. This layer provides excellent mechanical strength, rigidity, pressure resistance, and dimensional stability during heavy-duty operations.
Commonly Used Base Materials Include:
- 38CrMoAlA (SACM645) Alloy Steel – Provides high strength, excellent toughness, and nitriding performance.
- EN41B Alloy Steel – Known for durability, wear resistance, and long operational life.
- 42CrMo Steel – Offers superior mechanical strength and resistance to heavy loads.
- 34CrAlNi7 Steel – Provides excellent hardness and corrosion resistance.
- H13 / SKD61 Tool Steel – Suitable for high-temperature applications requiring thermal stability.
2. Wear-Resistant Inner Alloy Layer
The inner layer of a bimetallic barrel is manufactured with advanced alloy materials such as Tungsten Carbide, Nickel-based alloys, Cobalt-based alloys, and other wear-resistant compounds. This layer ensures your barrel surface is protected against abrasion caused by glass fibers, mineral fillers, recycled plastics, and aggressive polymers, giving you confidence in its durability.
The combination of a strong steel body and a protective alloy liner helps achieve longer barrel life, making your operations more dependable and reducing maintenance costs, which enhances your confidence in consistent plastic processing quality.
With advanced manufacturing technology and customized material selection
Tungsten Carbide Bimetallic Barrel for Our Applications
Extrusion Application
We specializes in manufacturing high-performance extrusion screw and barrel systems designed for PVC pipes, blown film lines, sheet extrusion, profile extrusion, and compounding applications. Their engineering ensures improved plasticization, higher output rates, reduced downtime.
Advantages of Using Tungsten Carbide Bimetallic Barrel
Frequently Asked Questions
A Bimetallic Barrel is a high-performance extruder barrel designed with a strong base material and a wear-resistant inner alloy layer. The bimetallic lining improves resistance against abrasion, corrosion, and high-temperature processing conditions, increasing barrel life and machine efficiency.
A Bimetallic Barrel is used to handle demanding plastic processing applications where standard barrels may wear quickly. It provides better durability, improved processing stability, and longer service life when processing filled polymers, recycled materials, and abrasive compounds.
Bimetallic Barrels are generally manufactured using high-strength alloy steels such as 38CrMoAlA, EN41B, SACM645, and tool steel grades. The inner surface is reinforced with wear-resistant alloys like Tungsten Carbide, Colmonoy, Nickel-based alloys, or Cobalt-based alloys.
Answer:
The thickness of the bimetallic liner generally ranges from 1.5 mm to 3 mm. For heavy-duty applications, special barrels can be manufactured with thicker wear-resistant layers according to customer requirements.
A standard barrel has a single steel construction, while a Bimetallic Barrel contains a wear-resistant alloy layer inside the barrel. This additional layer provides superior protection against abrasion and corrosion.
The service life of a Bimetallic Barrel depends on processing material, operating conditions, temperature, pressure, and maintenance. With proper selection and operation, it offers significantly longer life compared to conventional barrels.