Online continuous roller hole pattern misplacement detection instrument and method

Abstract

The invention relates to an online continuous roller hole pattern misplacement detection instrument and method. The online continuous roller hole pattern misplacement detection instrument comprises an upper hole pattern template and a lower hole pattern template which are provided with part cambered surfaces corresponding to continuous roller hole patterns and jointly form the continuous roller hole patterns. The instrument is characterized in that contact faces of the upper hole pattern template and the lower hole pattern template adopt a form that a slider is matched with a slideway, a zero position mark is arranged at the center of one of the hole pattern templates, the other hole pattern template is provided with a reference graduated ruler mark corresponding to the zero position mark, and multiple through holes convenient for hand-holding are distributed in faces of the upper hole pattern template and the lower hole pattern template. The instrument is simple in structure, reliable in use and simple to operate; hole pattern misplacement is adjusted and eliminated according to measured misplacement numeric value, so that the problem that existing continuous roller hole pattern misplacement is less prone to being timely found and dealt is solved, wall thickness accuracy of continuously rolled steel pipes is improved greatly, defective product rate is lowered remarkably, and production cost is saved.

Description

technical field [0001] The invention relates to the technology of hot-rolled seamless steel pipes, in particular to an on-line continuous roll pass dislocation detector and a detection method. It is suitable for the detection and adjustment of pass dislocation of two-roller continuous rolling mills in hot-rolled seamless steel pipe plants. Background technique [0002] Two-roll continuous pipe rolling units such as MPM continuous rolling pipe units are widely used in my country. MPM continuous rolling pipe units include Hengyang 89 continuous rolling, Baosteel 140 continuous rolling, Tianjin 250MPM, Baotou 180MPM, Anshan Iron and Steel 159MPM, Simlaisi 250MPM and 159MPM, Molong 180MPM and more than a dozen sets of units, as limit mandrel continuous roll tube units, are famous for their high automation level, high output, and high wall thickness accuracy. Equipment aging problems such as bore wear of Yamato bearing housings caused changes in the axial position of the on-line c...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a simple structure, reliable on-line continuous roll pass dislocation detector and detection method, adjust and eliminate pass dislocation according to the measured dislocation value, and fundamentally solve the difficulty of existing continuous roll pass dislocation The problem is found and dealt with in time, the operation is simple, the wall thickness accuracy of the continuous rolling steel pipe is greatly improved, the scrap rate is significantly reduced, and the production cost is saved

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