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?新型高溫蠕變松弛試驗機的研發背景

作者：來源：发布日期： 2020.10.21

信息摘要：

?新型高溫蠕變松弛試驗機的研發背景

发布日期：2019-06-26 点击次数： 1882
高温蠕变松弛试验机，用于检测材料在高温环境下的蠕变和松弛性能，因为试样和夹具通常为金屬，因此无法进行对试样通电流的复合蠕变松弛试验。因中南大学机电院新课题组的科研需要，要配套研发一种新款高温蠕变松弛试验机，试样与设备需要严格绝缘（包括常温和高温环境下）。温控系统需要实现恒升温速率控温，试验过程中的温度按设定程序控制。并且具有定时启动功能。现有国内产品无法满足要求。基于此三思泰捷承接了联合研发绝缘蠕变松弛试验机的立项。

中南大學設備現場

該産品的創新點包括：

1.目前國內的新材料的檢測方式層出不窮，客戶想在試樣試驗時對試樣進行加電流試驗，而且還是在高溫情況下進行，就需要對測試工裝引出部分作爲絕緣不導電處理，滿足客戶在高溫情況下絕緣性能要求。通過運用耐高溫絕緣塑料的抗壓性能，調整夾具結構（由直接拉伸調整爲拉串壓），最終實現了試樣與設備及主機嚴格絕緣。

2.本技術提供一種用于蠕變試驗的夾具系統，包括上拉伸杆、板材試樣接頭、引伸杆、下拉伸杆等部件；上拉伸杆與板材試樣接頭之間設有第一連接部件；板材試樣接頭與下拉伸杆之間設有第二連接部件；板材試樣接頭與引伸杆同軸心連接；第二連接部件的結構與第一連接部件的結構相同；第一連接部件采用台肩接頭、凸形塊以及第一墊片的組合方式或者采用第一擋塊、第二擋塊、第二墊片、拉伸塊以及固定部件的組合方式。

3.本技術中第一連接部件以及第二連接部件的設計使得整個絕緣材料部分的受力情況由原來的受拉變爲受壓，降低系統對絕緣材料的抗拉強度的要求；拉伸塊等采用絕緣材質，引入脈沖電流後整體設備不帶電，提高設備使用過程中的安全性能，蠕變效果好。

該專用試驗機獲得發明專利一項。並在中南大學、西北工業大學等高校成功應用，獲得良好的社會效應。

西北工業大學設備現場

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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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