A mill or calender roller and its manufacturing method

Abstract

The invention discloses a roller of an open mill or a calendaring machine and a manufacturing method of the roller. The roller comprises a roller shaft core and a roller jacket, wherein the roller shaft roller is sleeved with the roller jacket. The roller jacket is made of chilled cast iron or alloy chilled cast iron. The roller shaft core is made of 45 steel or 40Cr or 40MnB. A through hole is formed in the position of the axis of the roller shaft core to serve as a main runner. A liquid inlet pipe and a flow distributing and returning device are arranged in the through hole. Two medium runners located in the roller jacket are formed between the roller jacket and the roller shaft core and communicate with the main runner through the flow distributing and returning device. The roller is good in surface abrasion resistance, good in rigidity, high in strength, remarkable in heat exchange effect and uniform in temperature distribution.

Description

technical field [0001] The invention relates to the technical field of mills and calenders, in particular to a roller of a mill or a calender, and a method for manufacturing the roller of a mill or a calender. Background technique [0002] The mill and calender are important equipment in the field of rubber processing and are widely used. The mill is mainly used for the mixing of rubber materials. The calender compacts and stretches the mixed rubber. The roller is the mill The main parts of the calender and calender will be corroded and frictioned by the rubber material and the large lateral pressure during work. In order to ensure the processing accuracy of the product, the roller must have sufficient strength, rigidity and high Surface hardness and wear resistance. According to different process requirements, the roller needs to heat or cool down the rubber when rolling the rubber. Since a large amount of heat is generated during the interaction between the rubber materi...

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Problems solved by technology

[0003] In the prior art, a medium flow channel is set in the roller to heat or cool the rubber material. The rollers in the traditional mill or calender mostly adopt two temperature control methods: hollow type and drilled type. It is chilled cast iron with high surface hardness and good wear resistance, but it has the following defects: 1. The chilled cast iron material has high brittleness, poor internal toughness, and insufficient strength. It is prone to fracture when the lateral pressure is large; Rollers made of cast iron have small elastic modulus, poor rigidity, and large deformation under lateral pressure; 3. The heat exchange effect of hollow rollers is poor, and drilled rollers need to process deep holes and inclined holes, which is difficult to process Large, high processing cost, general cooling effect, can not guarantee the uniformity of roller temperature distribution, and the integral structure limits the feasibility of processing water channels with better heat transfer effect

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