The effect of surface modification of vulcanized rubbers on the adhesive strength

Results of a study are reported on the utilization of ground vulcanizate, which is a waste product of rubber prcoessing plants. Loaded stocks of various commercial rubbers act as objects for the study. Talc, kaolin, silicon dioxide, and furnace carbon black are used as fillers. According to the results of a study on the effect of the amount of rubber crumb, an increase in the content of unmodified crumb leads to a decrease in tear resistance that is associated with poor wettability. To increase wettability, we use organosilicon couplings. It is shown that the addition of vulcanizate to rubber stocks, together with highly dispersed fillers treated with organosilicon couplings, leads to a significant increase in tear resistance and makes it possible to significantly reduce the cost of production and utilization.     

Deformability of ShKh15 steel during cold plastic deformation

The effect of anomalous structural constituents in ShKh15 steel on its technological ductility during cold deformation has been studied. Additional high tempering of hot-rolled billets subjected to spheroidizing annealing is shown to remove retained lamellar pearlite and needle carbides, increasing the technological ductility of this ball-bearing steel.     

Ochratoxin A in pork kidneys--description of a method

A rapid procedure for the isolation and clean-up on a silica gel column is described for the determination of Ochratoxin A from pork kidneys. The detection limit is 0.3 microgram/kg.     

Direct-drive electromechanical steering booster for passenger cars

Results of the development of a direct-drive electromechanical steering booster (ESB) for a passenger car are considered. Technical characteristics of the ESB and the results of the calculations of characteristics and the simulation of the magnetic system are presented. Availability of application of magnetoelectric motors with fractional tooth windings in the ESB is shown.