Bimetallic Barrel Cylinder with Centrifugal Casting Iron-based Alloys DW-K1

DW-K1 Bimetallic barrel Cylinder with Centrifugal Casting Iron-based Alloys 

The centrifugal casting process is a widely used technique for producing cylindrical parts, including engine cylinders for various applications, such as automotive, marine, and industrial equipment. Iron-based alloys, which possess high strength, wear resistance, and thermal conductivity, are commonly used for cylinder production via centrifugal casting.

The process involves the spinning of a cylindrical mold around its axis while molten metal is poured into it. The centrifugal force generated during spinning ensures that the metal fills the mold cavity evenly and solidifies against the walls of the mold, forming a cylindrical shape. This results in a uniform grain structure and mechanical properties along the length of the cylinder.

Iron-based alloys commonly used for centrifugal casting include gray iron, ductile iron, and high-strength irons, such as Ni-resist and Hi-Sil Moly. These alloys are known for their excellent mechanical properties, high fatigue resistance, and corrosion resistance, making them ideal for use in harsh operating environments.

In addition to the material selection, other factors such as mold design, pouring temperature, and cooling rate affect the quality of the cast cylinder. Proper control of these parameters is essential for ensuring that the casting is free of defects such as porosity, shrinkage, and cracks.

Furthermore, the use of simulation software can aid in predicting the flow pattern of molten metal into the mold, allowing for the optimization of the casting process. The development of computer-aided design and manufacturing (CAD/CAM) technology has also enabled the production of complex geometries, such as internal cooling channels and intricate shapes.

The centrifugal casting process of iron-based alloys is an efficient and cost-effective method for producing high-quality cylinders for various applications. Proper selection of materials, design, and process control are crucial for achieving the desired mechanical properties and ensuring the part's reliability and durability. Utilizing advanced technologies such as simulation software and CAD/CAM can help optimize the process and expand the possibilities for complex designs.

Technical Parameters

Product Name : Iron-based Bimetallic Barrel

Material: 42CrMo + DW-K1 Alloy

Suitable Machine: Injection / Extrusion / Blowing ...

Available Size: Φ < 500mm, L < 8,000mm

Process Method: Centrifugal Casting

Surface Hardness: 56-60 HRC

Surface Roughness: < Ra 0.8

Screw Straightness: < 0.02mm/m

Advantages

By casting and sintering high quality alloy powder on barrel inside surface with thickness1.5-2.0mm, screws can get higher performance in both wearing & corrosion resistant performance.

Applications

General plastics & engineering plastics with below 30% glass fibre filling.

Comparison of DW-K Series Alloy

At this stage, we have DW-K-1, DW-K-2 and DW-K-3 alloy types and treatments for wear fighting.

Suitability: (x good) to (xxx excellent).

*Highest composition of tungsten carbide can go up to 45%, which enables the barrels have 5 times wear-resistance capability than normal Bimetallic Barrels and up to 60% glass fibre filling in general & engineering plastics materials.

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