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钢筋的机械性能有哪几点决定?

添加时间:2019-06-05      发布人:

  我们都晓得钢筋机械性能需求经过实验来测定,丈量钢筋质量规范的机械性能有屈从点、抗拉强度、伸长率,冷弯性能等指标。接下来我们主要看一下这几项都是什么规范。
  We all know that the mechanical properties of reinforcing bars are tested by experiments. The mechanical properties of reinforcing bars are measured by yield point, tensile strength, elongation and cold bending properties. Next let's look at the specifications.
  屈从点(fy):当钢筋的应力超越屈从点以后,拉力不增加而变形却显著增加,将产生较大的剩余变形时,以这时的拉力值除以钢筋的截面积所得到的钢筋单位面积所承当的拉力值,就是屈从点σs°
  Following point (fy): When the stress of steel bar exceeds the yield point, the tensile force does not increase, but the deion increases significantly. When there will be a large residual deion, the tensile force per unit area of steel bar obtained by dividing the tensile force value by the cross-sectional area of steel bar at this time is the yield point s degree.
  抗拉强度(fu):抗拉强度就是以钢筋被拉断前所能承当的最大拉力值除以钢筋截面积所得的拉力值,抗拉强度又称为极限强度。它是应力一应变曲线中最大的应力值,固然在强度计算中没有直接意义,但却是钢筋机械性能中必不可少的保证项目。由于:
  Tensile strength (fu): Tensile strength is defined as the ultimate strength, which divides the maximum tensile force that the steel bar can bear before it is broken by the section area of the steel bar. It is the largest stress value in the stress-strain curve. Although it has no direct significance in strength calculation, it is an indispensable guarantee item in the mechanical properties of reinforcing bars. Because:
济南钢筋批发
  (1)抗拉强度是钢筋在接受静力荷载的极限才能,能够表示钢筋在到达屈从点以后还有几强度储藏,是抵御塑性毁坏的重要指标。
  (1) Tensile strength is the ultimate ability of steel bars to accept static loads. It can indicate how much strength of steel bars is stored after reaching the yield point. It is an important index to resist plastic damage.
  (2)钢筋有熔炼、轧制过程中的缺陷,以及钢筋的化学成分含量的不稳定,常常反映到抗拉强度上,当含碳量过高,轧制终止时温渡过低,抗拉强度就可能很高;当含碳量少,钢中非金属夹杂物过多时,抗拉强度就较低。
  (2) Defects in steel bars during smelting and rolling, and the instability of chemical composition content of steel bars are often reflected in the tensile strength. When the carbon content is too high and the temperature at the end of rolling is too low, the tensile strength may be very high; when the carbon content is too low and there are too many non-metallic inclusions in steel, the tensile strength will be low.
  经过以上的学习你对钢筋机械性能是不是有了很深的理解,假如您有济南钢筋批发的需求能够点击我们的官网停止咨询:/
  After the above study, do you have a deep understanding of the mechanical properties of reinforcing bars? If you have the wholesale demand of reinforcing bars in Jinan, you can click on our official website to stop consulting: /?
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