Manufacturing method for prestressed chilled cast iron roll

Abstract

The invention relates to the field of rubber-plastic machinery, specifically to a manufacturing method for a prestressed chilled cast iron roll used for rubber-plastic mastication and mixing. The manufacturing method for the prestressed chilled cast iron roll comprises the working flow of manufacturing a prestressed upset-head anchorage-cable assembly and tensioning the prestressed upset-head anchorage-cable assembly by using a center hole jack assembly so as to exert prestress on the chilled cast iron roll. According to the invention, since prestress is exerted on the chilled cast iron roll, the structure of the chilled cast iron roll no long bears radial force caused by rubber-plastic mastication and mixing, so the risk of roll breakage is reduced or eliminated; addition of more rare metals for improvement of the structure of the chilled cast iron roll is not need, so manufacturing cost is reduced; meanwhile, a common model casting method can be adopted, so manufacturing difficulty and cost are reduced. Moreover, since the prestress is exerted on the chilled cast iron roll and can be adjusted according to the rubber variety, formula and process for mastication, bending moment suffered by the chilled cast iron roll is balanced, and a roll surface is guaranteed to be parallel at the same time, so yielding quality of the rubber-plastic mastication is reliably guaranteed.

Description

technical field [0001] The invention relates to the field of rubber and plastic machinery, in particular to a method for manufacturing a prestressed chilled cast iron roll used for plasticizing and mixing rubber and plastic. Background technique [0002] At present, rubber and plastic products are closely related to people's production and life, and play a huge role in various industrial fields. The important equipment used in the rubber and plastic smelting and mixing process is the open mill. A pair of rolls of the open mill are usually made of chilled cast iron. The chilled cast iron roll has the advantages of wear resistance and no deformation, but due to the material, casting Due to limitations in technology, roll breakage will occur and the service life will be affected. At the same time, due to the different degree of wear of the roller surface, the thickness of the plasticized rubber and plastic sheet is not uniform. How to increase the service life of chilled ca...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned chilled cast iron rolls increase the strength of the roll body by adding rare metals such as molybdenum, nickel, and chromium, and are formed by centrifugal casting. , nickel, chromium and other rare metals are easily burnt and cause waste

In order to solve the problem of uneven production of rubber and plastic smelting, it is often used to process a certain height of the roller surface to offset the deformation of the roller body, but in the actual use process, the effect is not good because of the variety and process of processing rubber and plastic.

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