Combined calender roll for papermaking calender

Abstract

A combined burnishing roller for paper-making calender is composed of roller sleeve and roller body, which are combined together. Its advantages are high quality, light dead weight, and tight combination.

Description

technical field [0001] The invention relates to a calender roller for a papermaking calender, in particular to a cast iron calender roller, which is mainly used for cast iron of hard calenders, super calenders, gloss calenders and soft calenders in the papermaking industry. Calender rolls. Background technique [0002] In the modern papermaking industry, the paper sheets produced by various paper machines need to be calendered by a calender to improve the gloss, tightness and thickness uniformity of the paper sheets, and the calender rollers play an important role in the quality of the paper sheets. key role. [0003] In the prior art, the calender roll is produced by static casting (vertical gravity casting) of a single alloy chilled cast iron material, and the product is a single-material integral solid cast iron roll. There are two major problems in product quality that are difficult to solve: 1. There are casting defects such as pores and sand holes on the surface of t...

AI Technical Summary

Problems solved by technology

There are two major problems in product quality that are difficult to solve: 1. There are casting defects such as pores and sand holes on the surface of the roller body

2. Due to the slender shape of the calender roll, it is not easy to feed the upper roll neck during the solidification process, and it is difficult to avoid loosening. The contact part with the bearing bush is not wear-resistant and easy to damage during use.

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