| 摘要 |
FIELD: manufacture of pipe-like molded articles from polymer concrete. SUBSTANCE: mineral molding material is fed to molding chamber of molding device including vertical molding rod and molding shell embracing it and is subjected to vibration followed by hardening at delivery of heat. Mineral molding material is acted on by vibration in molding chamber at the beginning of process. As column of material rises, material is acted on by heat in heating zone which is located behind it or coincides with it. After hardening of material in lower portion of molding chamber, the entire column of material is moved downward, thus making its hardened part extend from chamber. Column of material is added by delivery of material to molding chamber. Shell of device has fixed portion whose length corresponds to part of article being manufactured. Molding rod has heating and vibrating zones. Active areas of these zones are movable in axial direction. EFFECT: facilitated manufacture of molded articles from polymer concrete at low production and design expenses. 50 cl, 19 dwg
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