Articles

Design of Hammer and Main Shaft of Ultrafine Mill

by Xinhongji Refractory Xinhongji Refractory Materials
In the industrial projects, the ultrafine mill is widely applied in many departments such as cement, chemistry, power and metallurgy. Nowadays, the market demands for the ultrafine mill have been continuously expanding. On the other hand, the design of ultrafine mill is a very complicated process. Next, the experts of Zenith will explain to the customers what should be paid attention to during the designing process of the hammer and main shaft of the ultrafine mill. The design of the ultrafine mill mainly refers to the design of the structure because the shape, quality and material texture of the hammer of the ultrafine mill has a big influence on the production capacity of the crusher, especially that the shape determines the quality distribution and the sufficient utilization of the resources. The hammer is the main working part of the crushing machine and its shape, structural design has a profound effect on its working ability, production capacity of the whole machine and its economic efficiency. The hammer can be cast using high manganese steel. In order to improve the abrasion performance of the hammer, the selection of the hammer material is a key issue. The selection of the material depends on the working condition and other requirements of the working parts because the ultrafine mill is used for crushing medium hard and super hard materials such as lime stone. For this reason, the hammer often adopts high manganese low content alloy steel, and some companies even coat cemented carbide on the working surface. The main materials of the main shaft of the ultrafine mill manufactured by Zenith are carbon steel and alloy steel. The rough part of the steel axial mainly adopts rolled steel rod and forge piece, and some companies directly use steel rod. The carbon steel is cheaper than the alloy steel. At the same time, the mining machinery companies can also use the methods of warm handling and chemical handling in order to improve the abrasion performance and anti-fatigue strength of the ultrafine mill, for this reason, the carbon steel shaft has wider application. As for the main shaft, after the installation of the spare parts on the main shaft and the assembly plan are determined, the shape of the main shaft of the ultrafine mill can be generally determined. The assemble order is that install the rotor that is located in the middle of the machine, and place it on the box, and then install the bearing end cap, and then is the main bearing and the outer bearing pedestal. And in the end are the belt wheel and the flywheel on both sides. The structure of the main shaft of the ultrafine mill must be compact and the length of the stage of the main shaft must be determined. At the same time, the technicians have to make sure that there is assembly and adjustment space in rotor, belt conveyor and flywheel and the bearing, that is to say, the determined length of the shaft must take into consideration the axial dimension of the spare parts and the main shaft and the necessary gap between the adjacent spare parts.

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About Xinhongji Refractory Advanced   Xinhongji Refractory Materials

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Joined APSense since, November 17th, 2014, From Zhengzhou, China.

Created on Feb 24th 2018 03:00. Viewed 285 times.

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