Belarusian scientists have developed a technology that allows increasing the service life of highly loaded gears for BelAZ quarry dump trucks. This was stated by Sergey Sandomirsky, head of the metallurgy in mechanical engineering laboratory at the United Institute of Mechanical Engineering (OIM) of the National Academy of Sciences of Belarus.
Specialists of the Institute of Mechanical Engineering are engaged in issues of chemical-thermal hardening of parts, Sandomirsky said. In particular, we are talking about transmission gears, which are considered the "bottleneck" of equipment produced by MTZ, MAZ, and BelAZ, he explained.
The work of scientists is to determine the exact place of destruction and prevent it, and in real production conditions.
To ensure the necessary strength of parts, scientists proposed using so-called economically alloyed steels. This is an alloy with a reduced nickel content and special alloying additives (improving the physical and mechanical properties of the material). The production of such gears for the transmission has become cheaper. Bench tests confirmed their effectiveness.
According to Sandomirsky, modernized parts were used in the assembly of new BelAZ trucks. Currently, more than 100 dump trucks are undergoing test operation in a quarry. It is expected that the transmission resource before overhaul will increase to 400 thousand km.
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