CN200939455Y - Working roll of hot-rolled strip roughing mill - Google Patents

Abstract

The utility model (the roll surface nick of the hot-rolled strip steel roughing mill roll) is mainly applied to the working roll of the roughing mill of the hot-rolled strip steel production line. A certain groove is carved on the working roll body of the roughing mill to prevent the roll from slipping when biting into a billet in the rolling process. The trend of the groove is a left spiral line and a right spiral line, the starting points of the left spiral line and the right spiral line are on the same bus, the number of the left spiral line and the right spiral line is equal, the left spiral line and the right spiral line are symmetrical in the left and the right direction and are respectively n, n is 1-10, and the section of the groove is triangular, semi-elliptical or polygonal.

Description

A kind of hot-strip roughing mill working roll

Technical field

The utility model belongs to the steel rolling equipment field, relates generally to hot-strip roughing mill working roll.

Background technology

The used working roll of hot-rolled strip production line roughing section milling train, generally all adopt smooth roll surface, because roughing mill is the bigger slab of rolling thickness all, the difficulty of in the operation of rolling, nipping, skidding often takes place, influence of rolled speed not only, and make rolling instability owing to skid, easily cause the accident.

Summary of the invention

The purpose of this utility model is to prevent that in the operation of rolling, roll skids when nipping steel billet.

The object of the present invention is achieved like this, is carved with certain groove at the roughing mill working roll body of roll, increases frictional force, skids when preventing that roll is nipped steel billet in the operation of rolling.

Be specially: the groove trend is left and right sides helix, and left and right sides helix starting point is on same bus, and left and right sides helix number equates that left-right symmetry is respectively the n bar, n=1～10.Trench cross section is triangle or polygon.

Adopt the body of roll of the present invention to be carved with the working roll of groove, can prevent to skid when roll is nipped steel billet in the operation of rolling, influence of rolled speed, and solved owing to skid and make rolling instability, prevented the generation of accident.

Description of drawings

Fig. 1 is a schematic diagram of the present utility model;

Fig. 2 is leg-of-mutton schematic diagram for the utility model body of roll groove A-A cross section

Fig. 3 is trapezoidal schematic diagram for the utility model body of roll groove A-A cross section

Fig. 4 is polygonal schematic diagram for the utility model body of roll groove A-A cross section

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

As shown in Figure 1, the operation roll of mill body of roll is carved with certain groove, increases frictional force, skids when preventing that roll is nipped steel billet in the operation of rolling.The groove trend is left and right sides helix, and the left-hand screw line is a ₁, a ₂A ₉Right-hand helix is a ₁₁, a ₂₂A ₉₉The spiral groove left-right symmetry, and the left and right sides spiral groove starting point of symmetry is on same bus, as, left-hand screw shape groove a ₁With right-hand screw shape groove a ₁₁Starting point on same bus.From the A-A cross section of groove, trench cross section is triangle, half elliptic or polygon.

L is the cutting width, and L=0.5～10mm, H are groove depth, H=0.5～4mm.Fig. 2, Fig. 3, Fig. 4 are 3 kinds of typical shape of spiral groove.Wherein can there be lead angle to be connected between side and base among Fig. 3, Fig. 4.

Claims (5)

1. hot-strip roughing mill working roll, it is characterized in that: the body of roll has groove.

2. operation roll of mill according to claim 1 is characterized in that: body of roll groove trend is for spiral yarn shaped.

3. operation roll of mill according to claim 1 is characterized in that: groove width L=0.5～10mm, gash depth H=0.5～4mm.

4. operation roll of mill according to claim 1 is characterized in that: trench cross section is triangle or polygon.

5. operation roll of mill according to claim 1 and 2 is characterized in that: helix is a left and right sides helix, and left and right sides helix starting point is on same bus, and left and right sides spiral the end of a thread number is respectively the n bar, n=1～10.

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