Restoration of Steel Crankshafts of Internal Combustion Engines by Surfacing
A. S. Savenko, N. V. Savenkov, S. A. Savenko
Donbas National Academy of Civil Engineering and Architecture
Annotation: The article describes a method for restoring steel crankshafts of internal combustion engines by using the method of electric arc surfacing along a helical line with powder wire ПП-Нп40Х4Г2СМНТФ under flux АН-44УІ for connecting rod necks, and restoring the root necks by wide-angle electric arc surfacing with the same wire without the use of an additional protective medium, does not cause significant deformations of the shortening of the crankshafts. If the requirements of technical operation are met, using this technological process of restoring the engine crankshaft with extreme wear of the root necks, Exactly 70 microns can provide a repair resource of 280 thousand km, that is, like a new product. The appropriate rational modes of surfacing of the connecting rod and main journals of the crankshafts of ZIL-4331 engines also proposes in the work.
Keywords: restoration, surfacing, wear, repair size, crankshaft, heat treatment, endurance limit, wear resistance, operation, mileage, durability, testing.
Pages: 27-35.
Link for citation: Savenko, A. S.; Savenkov, N. V.; Savenko, S. A. Restoration of Steel Crankshafts of Internal Combustion Engines by Surfacing. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2022. – Vol. 18, N 1. – Р. 27-35. – URL: https://donnasa.ru/publish_house/journals/spgs/2022-1/03_savenko_savenkov_savenko.pdf (date of access: 16.09.2024). (in Russian)
Vol. 18, N 1 (2022)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture