New Design of Tool for Measuring Radial Deviation of Weld Steel Pipe
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摘要: 分析了目前测量焊接钢管管端噘嘴和径向偏差时存在的问题，提出了一种全新的测量方法，并设计了一种专用测量工具。测量原理是：在钢管外壁以外的空间内建立空间参照圆，以空间参照圆为基础建立虚拟的钢管理想圆轮廓线，将钢管理想轮廓线标定为相对零点，通过测量钢管外壁与钢管理想轮廓线的距离，从而得到噘嘴尺寸。该方法解决了现有测量方法的不合理和测不准问题，且不需要制作大量模板或标定试块，适用于管端噘嘴、管端及管体径向偏差的测量，经济性好，通用性强。Abstract: Analyzed in the essay are the existing problems for measuring the end pout defect and radial deviation of the weld steel pipe.Accordingly a quite new measurement method is proposed,and a special tool is designed.The operation principle of the tool is described as follows.Setting a reference circle in the space outside the outer surface of the steel pipe based on which the virtual contour line of the ideal circle of the pipe is established.Then getting this ideal contour line calibrated as the zero point to obtain the dimensions of the end pout by means of measuring the distance between the outer surface of the pipe and the said ideal contour line.Thanks to the measurement method,the problems of irrationality and inaccuracy as staying with the currently-used measurement method is fixed,and moreover it no longer needs to prepare huge quantity of the template and the reference block.The said measurement tool is suitable for measuring pipes with end pout defect,and end and body radial deviations,having high economy and generality.
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Keywords:
- SAW pipe /
- measurement /
- pout defect /
- radial deviation /
- ideal circle contour line /
- relative zero point
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