Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia

F. A. Stolyarov, Postgraduate Student, e-mail: stolyarov.f.a@yandex.ru

Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia¹ ; SPA BelMag, Magnitogorsk, Russia²

I. G. Gun, Dr. Eng., Prof.¹, General Director², e-mail: goun@belmag.ru

SPA BelMag, Magnitogorsk, Russia

A. R. Vakhitov, Cand. Eng., Chief Designer, e-mail: vakhitov@belmag.ru
A. V. Smirnov, Cand. Eng., Purchasing Director, e-mail: alexey.smirnov@belmag.ru

One of the most important indicators that determine the reliability of car suspension and steering ball joints, in accordance with the requirements of domestic standards and technical specifications of automakers, is durability in operation, which, in particular, is characterized by the gamma-percentage operating time before failure of the ball studs. At the request of many automakers, in the process of designing suspension and steering components, it is necessary to determine the time to failure of the ball pins, during which an object failure will not occur with a probability of 90 %. The determination of this indicator is based on the analysis of data from a random sample of a two-parameter Weibull distribution obtained from the results of the experiment. This article discusses the procedure for determining the gamma-percentage time to failure of the ball pins of the steering ends of the Lada Largus, made of medium-carbon low-alloy steel.

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