Method for Determining the Machining Position of Notches in Charpy Impact Test Specimens

Abstract

The invention provides a method for determining the notch processing position of a Charpy impact test sample applied in the technical field of dynamic mechanical performance test methods. During surface welding, the three straight lines a1, b1, and c1 are parallel to each other, and a1 is located between b1 and c1. A1, b1, c1 and the fusion line divide the Charpy impact sample weld and the base metal into four parts: base metal Ⅰ Zone 101, base metal zone II 102, weld zone I zone 103, weld zone II zone 104, assume that the area of ​​base metal zone I 101 is A1, the area of ​​base metal zone II 102 is B1, and the area of ​​weld zone I 103 is C1. The area of ​​seam II area 104 is D1, and a1 moves between b1 and c1. With the movement of a1, the values ​​of A1 / B1 and C1 / D1 also change continuously. When A1 / B1=C1 / D1, the position of a1 is Charpy The position of the center line of the notch of the impact sample and the method of the present invention can solve the problem of positioning the processing position of the notch of the Charpy impact sample for the material at the weld fusion line in the Charpy impact test of the existing welding process approval.

Description

technical field [0001] The invention belongs to the technical field of dynamic mechanical performance test methods, and more specifically relates to a method for determining the notch processing position of a Charpy impact test sample. Background technique [0002] The Charpy impact test is to use the principle of energy conservation to break a Charpy impact specimen of a specific shape and size processed in accordance with relevant standards under the action of an impact load to determine a dynamic mechanism of impact energy absorbed during the fracture process. Performance test method. The Charpy impact test has become the most widely used traditional mechanical property test to measure the toughness of metal materials because of its simple sample processing, short test time, and test data sensitive to material structure and metallurgical defects. It is one of the important methods for the toughness of materials under impact load, and it is also the most important test me...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: aiming at the deficiencies of the prior art, provide a method with simple steps that can effectively solve the notch processing position of the Charpy impact specimen of the material at the weld fusion line in the existing welding process approval Charpy impact test Positioning problem, to ensure that the Charpy impact test is carried out reliably, and the test results are accurate and reliable. The method used to determine the notch processing position of the Charpy impact test specimen

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