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GB/T26957-2011十字接頭與搭接接頭試驗機拉伸

作者：來源：发布日期： 2020.10.20

信息摘要：

GB/T26957-2011十字接頭與搭接接頭試驗機拉伸

针对金屬板材的十字接头盒搭接接头，国标GB/T26957-2011规定了带有横向应力角焊缝焊接接头拉伸试验的程序和试样尺寸要求，测定抗拉强度与断裂位置，使用试验机完成测试。

試驗設備：拉力試驗機
原理：對焊接接頭試樣連續施加拉伸力直至破斷。
除非另有規定，試驗溫度一般在常溫下進行。
除非另有規定，拉伸試驗按GB/T228進行。
試樣的截取，不得影響到試樣性能變化。

試樣圖示：

十字接頭試樣：

搭接接頭試樣：

試驗開始前，應測量並記錄試樣尺寸；開動試驗機，沿焊縫軸線垂直方向對試樣連續施加拉伸力，直至其破斷，加力速度應保持均勻，不得有突變，求取抗拉強度等參數。

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The Curate, of course, had heard nothing about the Clockwork man's other performances; he had scarcely heeded the hints thrown out about the possibility of movement in other dimensions. It seemed to him, in the uncertain light of their surroundings, that the Clockwork man's right arm gradually disappeared into space. There was no arm there at all. Afterwards, he remembered a brief moment when the arm had begun to grow vague and transparent; it was moving very rapidly, in some direction, neither up nor down, nor this way or that, but along some shadowy plane. Then it went into nothing, evaporated from view. And just as suddenly, it swung back into the plane of the curate's vision, and the hand at the end of it grasped a silk hat. Good fitting is often not so much a question of skill as of the standard which a workman has fixed in his mind, and to which all that he does will more or less conform. 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