• MACHINES

    IMPROVEMENT OF GROUND PUMPS FOR TRANSPORT OF SLURRY

    Machines. Technologies. Materials., Vol. 13 (2019), Issue 11, pg(s) 484-486

    The analysis on improvement of soil pumps which are used in the ore-dressing enterprises of the Republic of Kazakhstan is provided in article. As a result of the analysis of operation of soil pumps it is revealed that soil pumps, don’t meet modern requirements in reliability and power consumption, and possibility working parameters adjustment. The main shortcomings of soil pumps is low life cycle of flowing part components. At the moment the main solutions to increase operational resource of soil pumps are — decreasing of cavitation processes; reduction of hydro abrasive mixture flow in the impeller cavity, that will reduce surface wear of impeller elements and increase pump inlet capability; For pulp pumping – reduction of vibration influence both of hydro abrasive mixture and pump overall; Slurry solids extraction prior to its inflow into the cavity of the impeller and its blades. The following Innovative technologies for improvement of soil pump operational life and wear reduction of impeller parts surfaces were provided.

  • TECHNOLOGIES

    NOVEL TECHNOLOGY OF METAL POWDERS PRODUCTION BY HYDROVACUUM DISPERSION OF MELTS

    Machines. Technologies. Materials., Vol. 12 (2018), Issue 6, pg(s) 236-239

    A novel technology for producing metal powders is presented, the distinctive feature of which are the conditions of forming of powder particles. In particular, under the proposed technology the melt is sucked bottom-up by the vacuum produced by the toroidal vortex of the discharged nucleus of high-pressure water flow in the two-layer cylindrical shell cavity, where it is being dispersed as metallic particles and carried over from the working medium to a special store. The so produced powders have a particular morphology and structure, increased specific surface area and microhardness.