Manufacturing method of cane squeezing roller shell of sugar making machine

Abstract

The present invention provides a method for making cane-pressing roller shell of sugar-making machine. It is characterized by that it selects and uses a high-speed rotary centrifugal machine, and makes it act on the casting alloy liquor of cane-pressing roller shell to produce a strong centrifugal force, so that the alloy liquor is spread over the model cavity of cane-pressing roller shell so as to obtain the compact cane-pressing roller shell casting blank. When the molten metal is poured, the cane-pressing roller shell mould adopts the horizontal pouring mode.

Description

technical field [0001] The invention relates to sugarcane sugar-making mechanical equipment, in particular to a shell casting method for sugarcane pressing rollers. Background technique [0002] The sugarcane pressing roller is used to squeeze out the juice contained in the sugarcane. The most basic form is a three-roller pressing device including a top roller and two bottom rollers. The top roll and the bottom roll each consist of a forged steel mandrel and a cylindrical roll shell cast by pig iron. Several V-shaped teeth are evenly distributed along the circumference of the roll shell. One of the three press rolls is called the top roll, and two One of the bottom rollers is called the front roller at the front, and the other is called the rear roller at the back, and the three rollers are distributed in the shape of finished characters. The sugarcane is fed between the top roller and the bottom roller to be squeezed, and the juice contained in the sugarcane is squeezed ou...

AI Technical Summary

Problems solved by technology

In order to obtain a good casting, the weight of the riser accounts for one-third of the total weight, wasting a lot of energy and materials for melting the riser, but because the casting is too large, it often causes shrinkage and porosity on the end face of the casting , and due to sand casting, sand holes, pores and other defects are common, so the machining allowance diameter of castings should be about 60mm

Because of the vermicular graphite alloy cast iron material produced by our factory, the alloy is formed in the shallow part under the chilled casting surface. If the wear-resistant alloy components are just processed through such a large amount of machining, it will affect the performance of the press roller. quality

Due to the original casting process of sand mold casting and vertical casting, it is used in the production of wear-resistant alloy sugarcane press rollers, resulting in the above defects

Therefore, the service life of the rollers is very short, and generally they need to be replaced in 1 to 3 years, which not only wastes a lot of energy and metal materials such as electric power and coking coal, but also increases the production cost of the sugar factory and affects the maintenance time of the sugar factory.

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