A method for testing the mechanical properties of anti-seismic mild steel

A detection method, mild steel technology, applied in the direction of applying stable tension/pressure to test the strength of materials, preparation of test samples, etc., can solve the problems of different test results, and achieve accuracy, consistency, and reliability operational effect

Active Publication Date: 2018-08-03
ANGANG STEEL CO LTD
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Problems solved by technology

[0004] It can be seen that different detection rates result in different detection results. Although different detection units implement the GB / T228 detection standard, the detection rate required by the standard is too wide for seismic mild steel, resulting in a clear test result. different

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  • A method for testing the mechanical properties of anti-seismic mild steel
  • A method for testing the mechanical properties of anti-seismic mild steel

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Embodiment 1

[0031] [Example 1] Apply the method of the present invention to Seismic Mild Steel Bars Performed Tensile Tests

[0032] Yield strength and tensile strength are the characteristics of the material itself, which can be obtained through static tensile tests. The lower the tensile rate, the more it can reflect the real performance of the material. However, too low a rate will affect the efficiency of material testing. For ordinary For metal materials, the tensile rate range stipulated in GB / T228 is suitable, but for the new material of anti-seismic mild steel, it is necessary to find a more suitable detection rate.

[0033] Combined with the physical tensile test, the anti-seismic mild steel is made into the actual structural parts, and the physical tensile test is carried out on the special tensile test equipment, and the obtained The yield strength of the anti-seismic mild steel bar is 104MPa, and the tensile strength is 258MPa. Through field tests, the average rate of physi...

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Abstract

The invention relates to a method for detecting the mechanical property of anti-knock mild steel. The method comprises the following steps: (1), sampling and processing of a sample; (2), clamping two ends or two clamping ends of the sample into a chuck of a testing machine; (3), starting the testing machine to perform a tensile test; (4), measuring and recording the test result. Compared with the prior art, the method provided by the invention has the following benefits: the method for detecting the real mechanical property of anti-knock mild steel is provided, the requirements of the relevant standard are met, and the accuracy of the test result is ensured; after the adoption of the method, the elastic section speed, the yield section speed and the yield rear section speed during the whole test process are targeted, so that the accuracy and the consistency of the test result are ensured. The method has higher maneuverability, so that no software or hardware facility is needed, the situation that the sampling test result in a laboratory and the test result of a real component of a user are consistent is ensured, and quality objection during ordering and delivering of goods is prevented.

Description

technical field [0001] The invention relates to the technical field of testing the mechanical properties of metal materials, in particular to a testing method for the mechanical properties of anti-seismic mild steel. Background technique [0002] After the research and development of anti-seismic mild steel, it is necessary to test the mechanical properties. The testing standard is carried out in accordance with GB / T228 "Metallic Materials Tensile Test Method at Room Temperature". The main testing parameters include yield strength (ReL), tensile strength (Rm), elongation ( A) and reduction of area (Z), etc. According to the provisions of GB / T228, the detection rate of the elastic section during the stretching process is controlled at 6-60MPa / s, the rate of the yield section is controlled at 0.00025-0.0025 / S, and the rate after yielding is not greater than 0.008 / S. Because the seismic steel is very sensitive to the rate, for the rate that also meets the standard, in the two ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N1/28
Inventor 吕丹刘明王小强隋轶侯华兴王茹代文科吴占山林田子张涛刘源
Owner ANGANG STEEL CO LTD
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