High abrasion-resistant alloy cast iron drying cylinder for papermaking machinery

Abstract

The invention discloses a high abrasion-resistant alloy cast iron drying cylinder for papermaking machinery, which comprises a cylinder body and a cylinder cover. The side of the cylinder cover towards the cylinder body is provided with a balancing groove; a balancing block matched with the balancing groove is fixed in the balancing groove; the cylinder cover is made of ductile cast iron QT500-7; and an alloy element is added into the material of the cylinder body. The balancing groove can restrain the rotating direction of the balancing block, thereby ensuring the firm assembly of the balancing block, ensuring accurate dynamic balance measurement of the drying cylinder, improving the movement accuracy of the drying cylinder and facilitating the improvement of the speed of the drying cylinder. Because the cylinder cover is made of high performance material instead of low performance material, under the condition that the design and use requirements are satisfied, the weight is reduced, and the material and energy are saved. Because the alloy element is added into the material of the cylinder body, the surface hardness of the drying cylinder is improved, the abrasion resistance and the impact resistance after the speed is improved can be enhanced, and the service life of the drying cylinder is prolonged.

Description

technical field [0001] The invention relates to a cast iron drying cylinder for papermaking machinery, in particular to a high wear-resistant alloy cast iron drying cylinder for papermaking machinery. Background technique [0002] Cast iron dryer cylinders for papermaking machinery are widely used in multi-cylinder paper machines at home and abroad, and are also the most widely used low-pressure heat exchange containers in the papermaking industry. [0003] With the continuous improvement of the paper machine and the continuous increase of the speed of the machine, the problem of incompatibility in the use of the existing cast iron dryer gradually emerged. Generally speaking, there are three problems: first, the weight of the cast iron dryer cylinder is relatively large, and a large motor is needed to drive it; Shaking or even falling off; Third, after the speed increases, the surface hardness of the drying cylinder is higher. The surface of the existing cast iron drying cy...

AI Technical Summary

Problems solved by technology

Generally speaking, there are three problems: first, the weight of the cast iron dryer cylinder is relatively large, and a large motor is needed to drive it; Shaking or even falling off; Third, after the speed increases, the surface hardness of the drying cylinder is higher, and the surface of the existing cast iron drying cylinder is easy to wear, which affects the quality of papermaking and reduces the service life of the drying cylinder

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