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如何检验螺纹钢性能?

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【 发布于:2018-05-11 14:45:20 】


一般情况下螺纹钢筋的性能指标都会考核这些方面,其中有拉伸试验(抗拉强度、屈服强度、延伸率)弯曲试验(指的就是一次弯曲以及反弯曲)。而弯曲性能还是有一定的要求,是要在要求的规定的弯心直径弯曲180度之后,钢筋受弯曲部位表面也是不得产生裂纹的。

In general, the performance indicators of threaded bars will be examined, including tensile tests (tensile strength, yield strength, elongation) bending tests (referring to first and reverse bending). But there is a certain requirement for bending performance. After 180 degrees of bending of the required bent core, the surface of the bending part of the steel bar must not produce cracks.

对于钢筋可进行方向弯曲性能试验。而反向弯曲试验的弯心直径比弯曲试验相应增加一个钢筋直径,先正向弯曲90度,然后反向弯曲20度,经过反向弯曲试验之后,钢筋受弯曲部位表面也是不得产生裂纹。并且其表面质量也是有严格的要求,钢筋的表面不得有裂纹以及结疤和折叠。钢筋表面不允许出现凸块。

济南镀锌管

The bending performance test of steel bar can be carried out. The bend center diameter of the reverse bending test increases the diameter of a steel bar corresponding to the bending test, first bending 90 degrees first, then the reverse bending 20 degrees. After the reverse bending test, the steel bar can not produce cracks on the curved surface. And its surface quality is also strictly required. The surface of the steel bar must not be cracked or scarred or folded. A convex block is not allowed on the surface of the steel bar.

上述讲的就是关于如何检验螺纹钢性能的主要方法。螺纹钢的成品重量随着冶金熔炼炉次和热轧批次的工艺情况会产生稍微的变化,炉号和批号是抽样检验的基础。因此进口收用货部门和仓储部门要注意保留货物上的标记。螺纹钢一般是裸装捆扎交货,存放要注意防潮,锈蚀对螺纹钢性能会产生不良的影响。

The above is about the main method of testing the performance of rebar. The finished product weight of rebar will change slightly with the metallurgical smelting times and hot rolling batches. The furnace number and batch number are the basis of sampling inspection. Therefore, the import and export departments and warehousing departments should pay attention to keeping the marks on the goods. Thread steel is usually delivered in bundled bundled steel. It is necessary to pay attention to moistureproof. Rust will have bad effects on the performance of rebar.

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