Alloy steel materials approach acceptance, re inspection according to the batch, logo should be pasted firmly, clear handwriting, packaging materials should comply with the relevant laws and regulations, must have quality assurance and mechanical performance test report file delivery of each batch of steel plate.
Especially the tensile performance testing of automotive alloy steel plate under dynamic conditions becomes more and more important. However, the detection methods used by different testing laboratories are different, there are no available inspection standards, and the generated data are usually not comparable. In order to improve the data quality of steel under high tensile test conditions, 12Cr1MOV alloy steel plate was used to improve the accuracy of collision simulation.
Analyzed from the scope, equipment, test conditions and methods, contrast test block, adjust the sensitivity of defect testing and evaluation of several aspects of commonly used at home and abroad steel plate ultrasonic testing standards for personnel and inspection of the relevant units of more in-depth understanding and use of standard, the correct reference standard.
The text of each grade is described as:
Class A: fully covered with oxide, allow trace rust (diameter less than 10mm) of the steel surface;
Grade B: steel surface that has corroded and partially oxidized the peel has peeled off the area of not more than the total oxidation surface area of 1/10;
Grade C: the surface of the oxide has been peeled off due to rust, or can be scraped, and a small amount of pitting steel surface;
Grade D: oxide skin has been completely peeled off due to rust, and has generally pitting steel surface. N
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