Researches of Surface Quality Parameters of High Speed Sliding Bearings from Composite Materials for Printing Machines at DIamond Grinding

In the article the research results of defect layers formation on surface of high-speed sliding bearings made of new high-alloy composite materials from tool steels wastes and intended for printing machines have been presented. Such quality parameters of surface like cold-work strengthening and distortions of the 2-nd type are supplied by the result of interaction between force and temperature fields appearing on the top of diamond grain at fine diamond grinding of friction surfaces of sliding bearings were shown.

Model of Bof Lapping with Setted Temperature and Carbon Content

In order to increase the accuracy of process control refinement converter smelting, a series of mathematical models of controlling were developed. Melting model was created to calculate the charge (“static control”), control fuse in the process of purging (“dynamic management”) and finishing melting after the measurement of carbon content and temperature of the bath without interrupting the purge and calculation of reductants. The influence of control actions on the process of finishing converter smelting was studied.

Features of Shale Gas in Rotary Kilns Building Materials Industry

The possibility of shale gas usage in existing kilns of building materials industry is analyzed. The questions considering determination of thermal performance conditions of kilns for burning cement using nature and shale are studied. For a more complete modeling a mathematical model, compared with the known, taking into account such additional factors as the temperature of the exhaust gases and the conditions refractory lining wear during operation was applied.