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?金屬钢管拉伸试验报告

作者：來源：发布日期： 2020.10.15

信息摘要：

?金屬钢管拉伸试验报告

发布日期：2019-06-27 点击次数： 1172
客戶名稱：某公司
試樣名稱：鋼管
執行標准：GB/T228-2002
試樣數量：1根試樣
试验设备：金屬拉力试验机 CMT5105
試樣參數：標距120mm、試驗速度：5mm/min
夹具：10T楔形拉抻夹具
試驗方案：①.按試樣內徑加工堵頭；

②.測量試樣尺寸；
③.准備試驗設備及夾具；
④.將試樣裝夾于夾具內；
⑤.試驗運行(5mm/min)直到斷裂；
⑥.出示試驗報告；

試驗報告及特征曲線圖：

相關材料：

金屬管材的力学性能检测

管材产品生产需经过锻造、无缝加工、焊接等制造工艺过程。几乎所有类型的金屬材料都可用于管材生产，从铸铁到超级耐热合金钢。

壓縮

壓縮试验用于测试管材的塑性和结构刚度。确定埋设管材的承受力对选择合适的产品非常重要。试验样品部分或全部压扁。常见的标准是检查管材表面是否断裂或有裂缝。

解決方案

金屬管压扁试验方法 GB/T 246-1997，根据标准配置相关尺寸的管材压扁夹具和专业的软件控制系统

拉伸

管材的尺寸和形狀會給拉伸試驗帶來困難。如果沒有合適的試驗設備，操作人員可能會在夾緊時無意壓扁樣品兩端。此外，由于完整管材樣品通常大于實心圓形樣品，因此需要開口較大的夾具。有些管材樣品由于過大，操作人員必須從管壁切割部分管材。這些管壁樣品可以制成扁平鋼帶試樣或機制成圓形試樣。

解決方案

为防止试验机的夹而压扁空心管材试样，通常在管材两端插入金屬塞操作人员可选择带有V形槽夹持的楔形夹具。

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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. If this standard is one of exactness and precision, all that is performed, whether it be filing, turning, planing, or drawing, will come to this standard. This faculty of mind can be defined no further than to say that it is an aversion to whatever is imperfect, and a love for what [171] is exact and precise. There is no faculty which has so much to do with success in mechanical pursuits, nor is there any trait more susceptible of cultivation. Methodical exactness, reasoning, and persistence are the powers which lead to proficiency in engineering pursuits. I was the only civilian in that road, and the soldiers, with much curiosity, stared at me. Whenever I noticed an officer, I gave an elaborate military salute, and with such an air that the officers, although hesitating at first, did not fail to return the salute. The reformed system of education was to be not only moral and religious but also severely scientific. 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