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Composite hard alloy roller

A technology of cemented carbide and alloy roll rings, which is applied in the direction of rolls, metal rolling, metal rolling, etc., can solve the problems of falling, easy to loose product life, alloy roll rings and roll shafts are not firmly connected, and achieve firmness The effect of fixing and prolonging the service life

Inactive Publication Date: 2013-01-02
ZHEJIANG HENGCHENG CEMENTED CARBIDE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a composite cemented carbide roll, which can effectively solve the problem that the existing alloy roll ring and the roll shaft are not firmly connected and easy to loosen, resulting in a decrease in product life

Method used

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  • Composite hard alloy roller

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Embodiment Construction

[0014] refer to figure 1 It is an embodiment of a composite cemented carbide roll of the present invention, a composite cemented carbide roll, comprising a roll shaft 1, at least two alloy roll rings 2 are arranged on the roll shaft 1, and the adjacent alloy rolls A spacer ring 3 is provided between the rings 2, a step 8 that blocks the alloy roller ring 2 is provided at one end of the roller shaft 1, a large nut 4 is provided at the other end of the roller shaft 1, and a large nut 4 is provided on the large nut 4. There are at least three threaded holes 5 parallel to the axis. Bolts 6 are arranged in the threaded holes 5. One end of the bolts 6 is pushed against the end surface of the alloy roll ring 2. The gap between the large nut 4 and the alloy roll ring 2 is The bolt 6 is also provided with a reverse nut 7 to prevent the bolt 6 from loosening. The head of the bolt 6 is pushed against the end face of the alloy roll ring 2, and the tail of the bolt 6 is arranged in the thr...

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Abstract

The invention discloses a composite hard alloy roller which comprises a roller shaft, wherein at least two sections of alloy roller rings are arranged on the roller shaft, a spacing ring is arranged between the adjacent alloy roller rings, one end of the roller shaft is provided with a step used for blocking the alloy roller rings, the other end of the roller shaft is provided with a large nut, at least three threaded holes which are parallel to the axis are formed on the large nut, bolts are arranged in the threaded holes, and one end of each bolt is pressed against on the end surface of each alloy roller ring. The invention has the advantages that the alloy roller rings and the spacing rings are sheathed on the roller shaft, then the large nut screwed with the bolts is screwed in the roller shaft, the length of each bolt is regulated, so that the bolts can be pressed against the alloy roller rings, and then a reverse nut is properly screwed to locate the bolts. According to the composite hard alloy roller, interference fit is not needed between the alloy roller rings and the roller shaft, therefore, the alloy roller rings cannot be split, the service life of the roller is effectively prolonged, and additionally, the alloy roller rings can be firmly fixed to the roller shaft.

Description

technical field [0001] The invention relates to a composite cemented carbide roll. Background technique [0002] As the main working consumables of the rolling mill, the roll has a direct impact on product quality and production efficiency. Cemented carbide rolls have the advantages of high single-slot steel passing capacity, accurate negative tolerance control, and good product surface quality. [0003] Every time the hard alloy combined roll is ground, the amount of steel passing through a single groove reaches more than 800~1200 tons, which is 10 times that of the ball-ground cast iron roll. And the cemented carbide composite roller can increase the number of times of grinding, and the roller ring shaft can be reused many times. The benefit advantage is very prominent, and the surface finish of the rolled steel is good. [0004] The current composite roll rings are all made of alloy roll rings bonded to the roll shaft, but in the actual manufacturing process, the probl...

Claims

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Application Information

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IPC IPC(8): B21B27/03
Inventor 金益民黄椿吴晓娜郭伟波
Owner ZHEJIANG HENGCHENG CEMENTED CARBIDE
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