UDC 620.191.3 UDC 629.462

INVESTIGATION OF IMPACT TOUGHNESS OF CAST STEEL FOR LOAD-BEARING PARTS OF FREIGHT CARS Investigation of Impact Toughness of Cast Steel for Load-Bearing Parts of Freight Cars

Published in Proceedings of Petersburg Transport University · Volume 21, Issue 1 · Pages 274–281 · Rubric: PROBLEMATIC OF TRANSPORT SYSTEM
DOI: https://doi.org/10.20295/1815-588X-2024-01-274-281
Received: 28.03.2024 Accepted: 29.03.2024 Published: 29.03.2024
Objective: to conduct comprehensive experimental studies of the impact toughness of 20GL cast steel, which is used for the manufacture of load-bearing parts of freight cars. To obtain a serial diagram of the dependence of the impact toughness value on the test temperature. Methods: the method of mechanical testing of cast steel specimens under impact loading was used, which allows obtaining quantitative estimates of the material’s ability to resist impact fracture at different temperatures (impact toughness tests). Micrographic analysis of the fracture surface was used to study the surface of impact fracture. Results: based on the results of tests of specimens made of 20GL cast steel, experimental dependences P = f (τ); E = f (τ) and a serial diagram (KCV — T) were constructed, which allow evaluating the performance of cast steel in the manufacture of load-bearing parts of cars for various climatic conditions of operation. Practical significance: the results obtained allow us to carry out work to improve the technological and service properties of cast load-bearing parts of freight cars.
impact toughness of cast steel, cast load-bearing parts, freight car bogie
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1. GOST 32400-2013. Rama bokovaya i balka nadressornaya litye telezhek zheleznodorozhnyh gruzovyh vagonov. Tehnicheskie usloviya. M.: Izd-vo standartov, 2013.

2. GOST 32.183-2001. Telezhki dvuhosnye gruzovyh vagonov kolei 1520 mm. Detali litye. Rama bokovaya i balka nadressornaya. Tehnicheskie usloviya. MPS Rossii. M., 2001.

3. GOST 9454-78. Metally. Metody ispytaniy na udarnyy izgib pri ponizhennyh, komnatnyh i povyshennyh temperaturah. M.: Izd-vo standartov, 1978.