Sleeved and laterally-pressed combined-type roll collar

Abstract

The invention relates to the technical field of wire and bar steel rolling dies, in particular to a sleeved and laterally-pressed combined-type roll collar which can reduce the cost of the roll collar and avoid the crack of the roll collar. The roll collar comprises an outer ring made of a hard tungsten carbide material or other ultrahard materials and an inner ring of which the height is equal to that of the outer ring. The roll collar is characterized in that one end of the inner hole of the outer ring is provided with a hole step, and one end of the inner ring corresponding to the hole step is provided with a shaft shoulder; the other end of the inner hole of the outer ring is provided with a screwed ring base and compression ring bases, and one end of the inner ring corresponding to the screwed ring base is provided with a thread end; a screwed ring is arranged at the thread end; the screwed ring is provided with a plurality of screw holes; and compression rings are arranged on the axial outside of the screwed ring and in the screwed ring base and the compression ring bases. The compression rings and the screwed ring are connected by set screws and the hole step of the shaft shoulder. The compression rings prop against the outer ring to press down two sides contacting the hole step of the shaft shoulder so as to prevent relative slip between the outer ring and the inner ring.

Description

technical field [0001] The invention relates to the technical field of wire rod and bar steel rolling, in particular to a set lateral pressure combined roll ring which can reduce the use cost of the roll ring and avoid the breakage accident of the roll ring. Background technique [0002] With the improvement of the equipment level of wire and rod mills and the development of rolling technology, the rolling speed is getting faster and faster, and the surface quality requirements of rolled materials are getting higher and higher. Tungsten carbide has become the main material used for roll rings. The key components that are consumed in large quantities in production consume a large amount of rare metal resources such as tungsten and cobalt. [0003] Pre-finishing mills, finishing mills, and reducing and sizing mills are the core equipment of wire and rod mills. The axial pressure of roll ring assembly in these cantilever mills is an important process parameter for roll ring ass...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of high manufacturing cost and fragmentation accidents of roll rings of rolling mills in the prior art, and provide a reasonable structure, which adopts the structure form of inner ring plus outer ring, and has a higher performance than single hard tungsten carbide material or other The roll ring made of superhard material is low in cost, and can effectively avoid the roll ring breakage accident. The set side pressure combined roll ring

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