Зміцнення поверхонь виробів рухомим струминним апаратом

Abstract

Досліджено, що регулювати інтенсивність обробки доцільно за допомогою зміни швидкості руху струминного апаратута відстані від сопла до оброблюваної поверхні. Predicting of mechanical treatment results depending on the machined surfaces form and their physical and mechanical properties and an appropriate choice of technological modes are the important factors in creating competitive products. However, the technological modes choice for hydroabrasive blasting with loose solid balls are mostly based on practical experience and experimental data, which does not adequately forecast the surface quality characteristics and correctly assign technological modes. Therefore it is important the detailed research and mathematical descripting the mechanisms which forms quality of the surfaces of wares during processing with loose solid balls on the basis of which the technological providing can be developed for applying of the process in industry, development of recommendations for realization of automation of the process. Hydroabrasive blasting with loose solid balls is under consideration, and especially, the hardened layer distribution on the treated surface. Treating fixed flat surfaces with jet apparatus that moves progressively and uniformly relative to the surface is investigated. For implementation of strengthened layer depth distributing calculations an algorithm is made and the application program is realized in mathematical editor. The analysis of distribution diagrams of hardened layer on the treated surface for the different modes of the treatment by loose solid balls, gives next conclusions. Regulating the treatment intensity should be by changing the jet apparatus speed and the distance from the nozzle to the surface. Decreasing distance from the end of the nozzle to the treated surface conduces to the improvement of treating intensity. Speed of jet apparatus has the most significant impact on the hardened layer depth distribution. Increasing the speed lead to reduce intensity of hydroabrasive blasting. Uniformity surface strengthening is achieved during translational uniform movement of jet apparatus as shown the graphs form that is useful for technological process.