Нижньодніпровський Трубопрокатний Завод Ім. Карла Лібкнехта
Нижнеднепровский трубопрокатный завод им. Карла Либкнехта
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Application filed by Нижньодніпровський Трубопрокатний Завод Ім. Карла Лібкнехта, Нижнеднепровский трубопрокатный завод им. Карла ЛибкнехтаfiledCriticalНижньодніпровський Трубопрокатний Завод Ім. Карла Лібкнехта
Priority to UA3956952ApriorityCriticalpatent/UA11403A1/en
Publication of UA11403A1publicationCriticalpatent/UA11403A1/en
Reduction Rolling/Reduction Stand/Operation Of Reduction Machine
(AREA)
Abstract
A method of working pilger-roll includes rough mechanical processing of working surface of pass, hard-facing on the surface of the pass of wear-resistant material and finish treatment of pass. Inner layer at the apex of pass is built with width of 1/3-1/2 of pass width and with thickness of 1/3-1/2 of assigned thickness of hard-facing throughout the entire length of pass. Outer layer is built with variable thickness on entire working surface of pass from material, the plastic limits and hardness of which are respectively not less than for 2 are and 2.5 times smaller than the plastic limits and hardness of the material of inner layer.
UA3956952A1985-09-191985-09-19method of working pilger-roll
UA11403A1
(en)