English to Russian Tech/Engineering Ships, Sailing, Maritime ROTATING MACHINERY,POWER TRANSMISSION

The coupon is to be representative for the quenching rate of the typical
gear sizes. The hardness and microstructure at the centre of the coupon will then be representative for the core of a typical gear. The coupon is to be of the same type of material as the typical gears. The approximate size is minimum diameter 6 modules and length 12 modules. This module is to be either the module of the actual gear to be certified or from the upper range of the production with that material. The coupon is to follow the entire heat treatment and shot cleaning processes and be quenched together with the pinions and wheels in such a way that its quenching rate
is as representative as possible