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How much hardness of screw barrel is suitable ?

Por Cathy Lin October 13th, 2024 vistas 6
‌ The suitable range of hardness of screw barrel is generally about HV980~1080. ‌ This hardness range is suitable for the processing of ordinary plastics, such AS PP, ABS, PS, AS, PVC and so on ‌.

Specifically, the hardness of different types of screw barrel varies:

‌ nitriding steel screw barrel ‌ : after nitriding treatment, the surface hardness can reach HV950~1020, the depth of the nitriding layer is generally 0.5~0.8mm‌.
‌ double alloy screw ‌ : using SACM645, 38CrMoAl as the base material, the surface hardness is about HRC60° ‌.
‌ electroplating screw ‌ : the surface hardness is about HRC60° ‌.
‌ stainless steel screw ‌ : the overall hardness is about HRC55° ‌.
‌SKD61 screw ‌ : after special process treatment, high hardness, suitable for processing high toughness plastic ‌.
These hardness ranges and specific values are determined according to different materials and treatment processes to ensure that the screw barrel has sufficient wear resistance and service life during use.
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