FIELD: heat power engineering, machine engineering, possibly manufacture of members of heat exchanges or reinforcing members.
SUBSTANCE: ribbed sheet panel includes base made of metallic sheet and having outer ribs welded to base by action of HF-currents. Base has protrusions on its rear side. Relation of protrusion height to thickness of base is in range 0.8 - 2.0. In order to make such panel, cylindrical blank of metallic sheet being base of panel is shaped to helix. Ribs are welded by means of HF- currents to outer side of base along helix. Then ribbed panel is developed till predetermined curvature radius. On rear side of panel base protrusions are made by pressing-in ribs at process of their welding to outer side of base and(or) by forming.
EFFECT: enhanced operational characteristics of panels.
8 cl, 2 ex
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