JPH05111745A - Divided roll - Google Patents

Abstract

PURPOSE:To control the bulging amount to minimum and to effectively prevent the inner crack, the outer surface crack and the composition segregation, etc., of the casting parts cased by bulging by shortening the casting part non- supporting range occupied with bearing parts between respective rolls of the conventional divided roll. CONSTITUTION:Plural pieces of rolls R, R are arranged in series respective both sides are supported with bearings. The doughnut type flange parts 7 are interposed between opposed end surfaces 3a, 3a of outer races 3, 3 of bearings 2, 2 lying at respective bearing parts ch, ch of adjacent rolls R, R. The outer circumference central part of the short cylinder like ring 6 is connected to the inner diameter part of the flange part 7. The respective both half surfaces 10A, 10B partitioned with the flange part 7 of the short cylinder like ring 6 are brought in contact with the opposite side inner circumference surfaces 9, 9 of respective outer races 3, 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a casting for guiding an object in an unstable state in which the cross-sectional shape is not fixed such as unsolidified slab in continuous casting so that the cross-sectional shape does not fluctuate as much as possible. The present invention relates to a split roll used for a single guide roll device or the like.

[0002]

2. Description of the Related Art In a continuous casting apparatus, a slab guide roll device immediately below a mold has a thin solidified shell, so that the rolls are arranged at a fine pitch in the longitudinal direction of the slab, and each roll has a plurality of rolls arranged in series. However, the swelling in the lengthwise direction and the widthwise direction of the slab is suppressed by forming a split roll having both ends thereof supported by bearings.

In recent years, shell thinning has progressed with the increase in casting speed, and it has been essential to improve the bulging suppression function of the split rolls in response to the tendency to improve the quality of cast slabs.

As shown in FIG. 2, the conventional split roll has a structure in which the bearings ch, ch are independently provided between the rolls R, R, as a result of which the supporting region without this part becomes long and the cast slab The amount of bulging in the roll in the width direction was increased.

That is, the bearing ch between the rolls R, R,
Each ch has a bare ring 2 arranged on the outer circumference of the bearing core 1 at the end of the roll, an outer race 3 arranged outside this, and an end (inner end) on the roll side of this outer race 3.
Was sealably contacted with the neck of the to-be-beared core 1, and a donut-shaped seal ring 4 was detachably attached with a bolt B on the open side of the end (outer end) on the side opposite to the roll. In the figure, H is a cooling water passage for cooling the inside of the roll, and J is a communication pipe that seals the cooling water passages H and H and locks the relative rotation with the rolls R and R and is fitted. Also, the base 12
Bearings ch, both outer races 3 of the ch are fixedly supported, and the rings 13 and 13 are screwed onto the outer periphery of the bearing core 1 to form the bear rings 2 and 2 at predetermined outer periphery of the bearing core 1. Fixedly supported.

[0006]

SUMMARY OF THE INVENTION According to the present invention, the non-supported area of the slab occupied by the bearings between the rolls of the conventional split roll is shortened to minimize the amount of bulging, and the inside of the slab resulting from bulging is suppressed. It effectively prevents cracking, outer surface cracking, component segregation, and the like.

[0007]

DISCLOSURE OF THE INVENTION The gist of the present invention is to provide a divided roll having a plurality of rolls R, R arranged in series and supporting bearings on both sides of each of the rolls R, R. Portion ch, a doughnut-shaped flange portion 7 is interposed between the opposite end surfaces 3a, 3a of the outer races 3, 3 of the bear rings 2, 2 in the ch. The outer peripheral center of the
Each of the outer half surfaces 10A, 10B partitioned by the flange portion 7 of the short tubular ring 6 is brought into contact with the inner peripheral surfaces 9, 9 of the outer races 3, 3 on the opposite side. Is a split roll.

[0008]

Operation and Embodiments FIG. 1 is a vertical cross-sectional view of an essential part showing an embodiment of the present invention.

The short tubular ring with a flange 5 is composed of a short tubular ring 6 and a flange portion 7 in which the inner peripheral portion is joined to the central portion of the outer periphery thereof.

The flange portion 7 abuts each end face (both side faces) against the opposing end faces 3a, 3a of the outer races 3, 3 which oppose each other to seal, and the short tubular ring 6 is partitioned by the flange portion 7. Each half surface 10A, 10B of the outer peripheral surface is brought into contact with the outer inner peripheral surface 9, 9 of each outer race 3, 3 for sealing, and at the same time, the inner space 11 communicates with both the bear rings 2, 2. To form a greasing channel.

With the above structure, donut type flanges are used in place of the large seal rings 4 and 4 provided on the outer races 3 and the outer races 3 of the respective bearings ch of the respective rolls R and R of the conventional split rolls and ch. Since one flanged short tubular ring 5 composed of the portion 7 and the short tubular ring 6 fulfills its function, the bearing portions ch, c between the rolls R, R are thereby provided.
The slab unsupported length occupied by h is minimized, and the bulging amount of the thin solidified shell of the cast slab here is reduced.

[0012]

As is clear from the above description, the present invention suppresses the bulging amount to a minimum by shortening the cast piece non-supporting region occupied by the bearings between the rolls of the conventional split rolls.
Effectively prevent internal slab cracking, external surface cracking, component segregation, etc. due to bulging.

[Brief description of drawings]

FIG. 1 is an enlarged vertical sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view of an essential part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bearing core 2 Bear ring 3 Outer race 3a Opposing end surface 4 Seal ring 5 Short tubular ring with flange 6 Short tubular ring 7 Flange portion 9 Inner peripheral surface 10A Half surface 10B Half surface 11 Inner space 12 Base 13 Ring B bolt cH Bearing H Cooling channel J Communication pipe R Roll

Claims (1)

[Claims] 1. A divided roll comprising a plurality of rolls arranged in series and bearings supported on both sides of each of the rolls, wherein a doughnut-shaped roll is provided between opposing end faces of an outer race of a bear ring on each bearing of adjacent rolls. A flange portion is interposed, and the inner peripheral portion of the short tubular ring is joined to the inner diameter portion of the flange portion, and both half surfaces of the outer periphery partitioned by the flange portion of the short tubular ring are joined together. A divided roll characterized by being brought into contact with the inner peripheral surface of the outer race on the opposite side.