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?鍍銅鋼管拉伸試驗方法

作者：來源：发布日期： 2020.10.15

信息摘要：

?鍍銅鋼管拉伸試驗方法

客戶名稱：某公司
試驗名稱：鍍銅鋼管（內排氣管）拉伸試驗方法
試樣材料：鍍銅鋼管(長200mm)
执行标准：GB/T 228-2002
試樣數量：1根試樣
试样参数：直径40MM（外径）、2.5mm(内径）、试验速度2mm/min
试验方案：1.选用3T楔形拉伸夹具配4~8mm V形夹块；
2.夾持試樣上端並清零；
3.移動橫梁到適當位置夾持試樣下端；
4.用微動控制橫梁卸力到0~1N，並位移清零；
5.出試驗報告；
報告內容：尺寸、截面移、抗拉力、抗拉強度、屈服強度、延伸率；
其他說明：該試樣伸長率爲20.3%，面引伸計爲YYU-5020的有超量程情況；
备注：该试验所用夹具：3T楔形拉伸夹具，其图号为：L3-01。

試驗報告及特征曲線圖：

參考：
镀铜钢是一种复合材料，是通过电镀工艺将铜金屬均匀的覆盖在钢材表面而形成的新型接地材料。

鍍銅鋼接地材料優點:

1.鍍銅鋼接地材料利用表層厚達0.254mm銅層的防腐性，同時采用分子間相互滲透的電鍍工藝，具備了優異的防腐性能。可保證地網50年免維護，和傳統材料相比有良好的經濟性能並滿足全壽命設備周期管理，符合新材料新工藝新設備範疇。
2.在高頻接地或雷擊電流作用下，産生集膚效應，讓鍍銅鋼接地材料據有接近于純銅的導電性。
3.垂直鍍銅接地材料安裝方便快速，免開挖省時省力。通過連接，可實現任意深度並利用地下含水層，降阻效果明顯，同時無需額外鑽深井，從而減少變電站占地面積。
4.水平鍍銅鋼接地材料爲絞線，成卷供貨，鋪設時接頭少，穿管彎曲方便。絞線每股單獨電鍍，銅層厚度高達0.3mm以上，導電性能優異。

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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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