Changes in the crystal structure leading to an increase of hardness occur in the surface layers of steel KhVG under the influence of dynamic and static interactions with polyethylene.
The heat treatment of forming equipment used in manufacturing polyethylene parts should not produce the maximum hardness, since it leads to premature embrittlement and failure of the working surfaces.
To obtain forming equipment with a long service life it is necessary to create a permanent barrier to prevent contact of polyethylene with the surface of the metal.
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A. A. Berlin and V. E. Basin, Fundamentals of Adhesion of Polymers [in Russian], Khimiya, Moscow (1974), p. 297.
G. A. Gorokhovskii, Surface Dispersion of Dynamically Contacting Polymers and Metals [in Russian], Naukova Dumka, Kiev (1972), p. 132.
V. A. Belyi, N. I. Egorenkov, and Yu. M. Pleskachevskii, Adhesion of Polymers to Metals [in Russian], Nauka i Tekhnika, Minsk (1977), p. 202.
E. Bernhardt, Forming of Thermoplastic Materials [Russian translation], Mir, Moscow (1960), p. 23.
E. N. Demin, Design of Die-Casting Molds for Plastics [in Russian], Leningrad (1960), p. 87.
Kurgansk Machine Construction Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No 12, p. 50, December, 1979.
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Yanko, V.M., Sivkov, S.I. Effect of forming conditions on polyethylene-forming equipment made of steel KhVG. Met Sci Heat Treat 21, 954–955 (1979). https://doi.org/10.1007/BF00706639
- Crystal Structure
- Heat Treatment
- Surface Layer
- Service Life