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碳鋼焊條的力學性能試驗GB/T5117

作者：來源：发布日期： 2020.10.20

信息摘要：

碳鋼焊條的力學性能試驗GB/T5117

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國標GB/T5117是對碳鋼焊條技術規範的標准，其中有關焊條的力學性能試驗做了規定。

首先要進行試板的制備，要國標要求進行制備，試板焊前應予以反變形或拘束，以防止角變形，角變形大于5度者需報廢，焊後試板也不允許矯正。

焊前試板預熱溫度不低于105度，道間溫度應控制在110~180度之間。

长度大于450度的焊条，试板长度不小于500mm。焊后的焊缝金屬至少与试板表明齐平，不允许打平焊道。然后从试板上加工一个熔敷金屬拉伸试样。
熔敷金屬拉伸试验方法按国标GB2652进行。通过试验机来进行相关测试。

詳見GB/T5117-1995相關規定。

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