High abrasion-resistant alloy cast iron drying cylinder for papermaking machinery
A technology of alloy cast iron and papermaking machinery, which is applied in papermaking machines, papermaking, textiles and papermaking, etc., can solve the problems of high surface hardness requirements of drying cylinders, high requirements for balance precision of drying cylinders, and reduced service life of drying cylinders. Effects of saving materials and energy, reducing weight, and prolonging service life
Inactive Publication Date: 2010-01-20
JIANGSU HUADONG PAPER MACHINERY
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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,
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[0014] Example: A high wear-resistant alloy cast iron dryer for papermaking machinery, comprising a cylinder block and a cylinder head 2. The cylinder head is provided with a balance groove 1 on the side facing the cylinder block, and a balance weight matching the balance groove is fixed to the balance groove The position set in the middle restricts the rotation direction of the balance weight and ensures the firm assembly of the balance weight.
[0015] The material of the cylinder head is ductile iron QT500-7.
[0016] At least one of manganese, silicon, chromium and nickel is added to the material of the cylinder.
[0017] The balance groove is annularly opened on the side of the cylinder head facing the cylinder body, and the cross section is trapezoidal. The balance weight with the same trapezoidal cross section is fixed in the balance groove by bolts.
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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...
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Inventor 孙春山孙友根乔广钧
Owner JIANGSU HUADONG PAPER MACHINERY
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