What is the hardness of a screw barrel?

Aug 15,2024

The hardness of a screw barrel, which is an essential component in extrusion and injection molding machines, is a crucial factor for its durability and performance. Typically, the hardness of a screw barrel is measured using the Rockwell hardness scale, particularly the Rockwell C scale (HRC).

The hardness of a screw barrel generally falls within the range of 58 to 65 HRC. This high level of hardness is achieved through various surface treatment processes, such as nitriding, bimetallic coatings, or other heat treatments. These processes enhance the wear resistance of the screw barrel, ensuring a longer lifespan and better performance under the high-pressure and high-temperature conditions commonly encountered in extrusion and injection molding operations.

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