Modelling of technological process of joining steel ropes with the use of powder antifriction material and a conductor

When determining the causes of structural defects of a steel rope, the technology of carrying out work on splicing by a team of specialists was studied in detail. Field observations and experimental studies, as well as mathematical modeling of the process of structural defects formation in the rope joint section, allowed to establish that the cause is the imperfection of the existing technology for performing splice work [1-5]. The existing technology directly depends on the experience (professionalism) of a splicing team and provides for the work on splicing, as a solution to a new problem for every hawser, expressed in the design and calculation of the main parameters, according to the established standards of the rope manufacturer. It is noted that this labor function negatively affects a person, causing dangerous and harmful factors of the working environment, such as: severity and intensity of the labor process. Under the influence of dangerous and harmful factors, the specialist is subject to: static and dynamic overload, mental overstrain, neuropsychiatric overload, which negatively affect a person and, as a result, affect the quality of the work performed as a whole. The total accumulation of dangerous factors in the course of work leads to the decrease in the quality of the obtained results and deviation from the normalized indicators, which is unacceptable and leads to the formation of structural defects of a steel rope.

Finplast, a proceeding for optimization the performing of antifriction material surfaces

FINPLAST it’s a solution for up grating the trybological performing of antifriction material surfaces of sliding bearings. Finplast is an extension of the cold plastic deformation proceeding in the domain of finishing of sliding bearings. This proceeding was researched by the author in the field of production after studying the effect of metal cutting by finishing surfaces of sliding bearing. The paper presents the device for obtain the surfaces for study of the influents of FINPLAST proceeding parameters over most important tribological parameters. The paper presents the visual aspect and roughness profile of surfaces obtain by FINPLAST proceeding.

MANUFACTURE AND USE OF SILUMIN WITH GLOBULAR SILICON

Methods of production of silumin with globular silicon are developed. The manufacturing of this new antifriction material are organized. The wear resistance and operational life of articles from silumin with globular silicon are on par with or surpass performance of similar articles of antifriction bronze, but the articles of silumin with globular silicon are lighter and three times cheaper than articles from antifriction bronze.

Effects of Graphite Content on Performance of Powder Injection Molding Copper-Based Antifriction Materials

Copper-based antifriction materials were prepared by powder injection molding. The wear rate of the antifriction material and the coupled parts, and the friction coefficient were studied under the friction condition by changing the content of graphite from 2.5 % to 25%. The results show that the wear rate and the friction coefficient decrease with the increase of the graphite content when the content of graphite is less than 10%. When the content of graphite is 10%~15%, the friction coefficient can be kept stably at low levels(0.25), thereby better density and hardness can be obtained by reducing the consumption of antifriction material and coupled parts, which improves the antifriction effect and protects the coupled parts at the same time. When the content of the graphite is larger than 15%, the wear rate of the antifriction material goes up and the friction coefficient is increased.