碳素钢管断后伸长率数据

碳素钢管的断后伸长率是指在拉伸试验中，材料发生断裂后，在试样两端的标距上测量的两端拉伸后的伸长长度与原始标距长度之比。这一指标用来反映材料在拉伸破坏后的延展性能。统计公司内部质检部门对不同型号碳素钢管的断后拉伸率检测数据，分析该数据与产品标准值之间的差别，得到评级指数，通过评级指数对该型号的碳素钢管进行质量评级，以确保产品的质量。1.数据统计：汇总公司质检部门提供的各型号碳素钢管断后拉伸率测量值，明确碳素钢管断后拉伸率标准值。2.数据处理：通过每种型号碳素钢管取样测量值，计算得到平均断后拉伸率值；再通过（平均断后拉伸率值-断后拉伸率标准值）/断后拉伸率标准值，计算得到该型号碳素钢管的评级指数，最后通过评级指数得到该型号碳素钢管的评级。其中，评级A为评级指数≥1.0，评级B为1.0＞评级指数≥0.75，评级C为0.75＞评级指数≥0.5，评级D为0.5＞评级指数。3.数据应用：公司可以借助每种型号的碳素钢管断后拉伸率的评级，直观了解该批次产品的断后拉伸率质量情况，以保证产品质量稳定。

The percentage elongation after fracture of carbon steel pipes refers to the ratio of the extended length of the gauge length at both ends measured after material fracture in a tensile test to the original gauge length. This indicator is used to reflect the ductility of the material after tensile fracture.

The company collected the tensile elongation test data of different types of carbon steel pipes from its internal quality inspection department, analyzed the difference between this data and the product standard values to obtain the rating index, and performed quality grading for each type of carbon steel pipe based on the rating index to ensure product quality.

1. Data Statistics: Summarize the measured values of percentage elongation after fracture of various types of carbon steel pipes provided by the company's quality inspection department, and clarify the standard values of percentage elongation after fracture for carbon steel pipes.
2. Data Processing: Calculate the average percentage elongation after fracture using the sampling measured values of each type of carbon steel pipe; then calculate the rating index of this type of carbon steel pipe using the formula (average percentage elongation after fracture - standard percentage elongation after fracture) / standard percentage elongation after fracture. Finally, determine the grade of the carbon steel pipe based on the rating index, with the following grading rules:
- Grade A: rating index ≥ 1.0
- Grade B: 0.75 ≤ rating index < 1.0
- Grade C: 0.5 ≤ rating index < 0.75
- Grade D: rating index < 0.5
3. Data Application: The company can intuitively grasp the quality status of the percentage elongation after fracture of each batch of products through the grading results of each type of carbon steel pipe, so as to ensure the stability of product quality.

搜集汇总

数据集介绍

特点

该数据集包含185条碳素钢管的断后伸长率数据，用于评估产品质量。数据每季度更新，适用于制造业中的产品质量控制。