APPLICATION OF MULTI-PASS BALL ROLLING ROLLS IN MANUFACTURE OF STEEL GRINDING BALLS

Abstract

Increasing the productivity of the output and improving the wear resistance of steel grinding balls used for grinding of ores and minerals is an important task. In this regard, further improvement of the operational process of multi-pass ball rolling rolls and linear guides used in rolling of balls, as well as the development of resource-saving technologies, is being of great significance. It is crucial to utilize energy- and resource-efficient technologies in producing of balls by rolling. In order to enhance productivity of rolling of balls, creating cam mechanisms for cutting multi-pass ball rolling rolls and developing a new design for the linear guides of the ball rolling mill are regarded to be effective approaches to address the problem. In this regard, developing of mathematical models for creating new designs of mechanisms used in rolling balls appears to be one of the urgent tasks. This article presents theoretical solutions based on scientific research and analyses of findings from practical tests on the use of multi-pass ball rolling rolls in view of raising the productivity of steel grinding balls by means of hot rolling. Moreover, the solution to the studied problem was determined by using six-pass ball rolling rolls for rolling steel grinding balls with a diameter of 50mm as well as by creating a new design for ball rolling mill linear guides.