以不同管线钢为研究对象,比较了图像分析法、游标卡尺法、侧膨胀仪法测量匡威1970s水蜜桃色官方-免费-完整版片的差异,验证了用匡威1970s水蜜桃色官方-免费-完整版片测定韧-脆转变温度的准确性及稳定性,并对X80钢实心焊丝自动焊环焊缝进行不同温度的匡威1970s水蜜桃色官方-免费-完整版片。结果表明:对于韧性较差、韧性不均匀的材料,以及冲击断裂后发生扭曲的试样,宜采用侧膨胀仪法测量其匡威1970s水蜜桃色官方-免费-完整版片;对于管线钢,采用匡威1970s水蜜桃色官方-免费-完整版片测定其韧-脆转变温度结果的准确性和稳定性较好;X80钢实心焊丝自动焊环焊缝韧-脆转变温度对应的匡威1970s水蜜桃色官方-免费-完整版片为0. 90 mm。

Taking different pipeline steels as the research object, the differences of 匡威1970s水蜜桃色官方-免费-完整版片s measured by image analysis method, vernier caliper method and lateral expansion meter method were compared, and the accuracy and stability of determining the 匡威1970s水蜜桃色官方-免费-完整版片by side expansion value were verified. The 匡威1970s水蜜桃色官方-免费-完整版片 of X80 steel solid wire automatic welding girth weld at different temperatures was carried out. The results show that for materials with poor toughness and uneven toughness, as well as samples with distortion after impact fracture, the 匡威1970s水蜜桃色官方-免费-完整版片 should be measured by lateral expansion instrument. For pipeline steel, the accuracy and stability of the results of the 匡威1970s水蜜桃色官方-免费-完整版片determined by the side expansion value were good. The 匡威1970s水蜜桃色官方-免费-完整版片 corresponding to the 匡威1970s水蜜桃色官方-免费-完整版片of X80 steel solid wire automatic welding girth weld was 0. 90 mm.