亚洲国产成人精彩精品,小蝌蚪视频在线观看国语版,亚洲国产成人久久三区,亚洲第一福利视频导航,亚洲阿v天堂2021在线观看,亚洲四虎永久在线播放

歡迎來到鹽山昱通螺旋鋼管實體生產企業!

服務熱線:

139-0327-6700

銷售熱線:

0317-5760336

昱通管道

鹽山昱通管道

專業生產銷售大口徑厚壁國標螺旋鋼管,廠內加工防腐/保溫/涂塑

×
服務熱線:

139-0327-6700

新聞中心

您現在的位置:
首頁 > 鋼管百科 > 管線鋼強度水平對鋼管強度的影響

管線鋼強度水平對鋼管強度的影響

日期:2020-08-11

管道鋼的強度對材料的加工硬化能力和鮑辛格效應有重要影響。隨著鋼強度的增加,硬化指數趨于降低,即加工硬化能力下降,鮑辛格效應增強。

管線鋼強度水平對鋼管強度的影響

當管道的屈服強度小于450Mpa時,加工硬化作用大于鮑辛格效應,從而導致螺旋鋼管試驗的屈服強度增加。當管道的屈服強度大于450Mpa時,鮑辛格效應大于應變硬化效應,從而導致鋼管試驗的屈服強度降低,而膨脹后試驗的屈服強度大于鋼板的屈服強度。管道成型過程中拉伸強度的變化與屈服強度的變化不同。

鋼管的抗拉強度始終大于鋼板。這種鋼管強度增加的趨勢對于低強度鋼更為明顯,在50Mpa內抗拉強度增加。隨著屈服強度的變化,鋼管的屈服比也發生變化,鋼管膨脹后的鋼管的屈服比始終比鋼板高。

主站蜘蛛池模板: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |