CN211552503U

CN211552503U - Device for crushing iron scale layer on surface of discharged steel billet

Info

Publication number: CN211552503U
Application number: CN202020184101.XU
Authority: CN
Inventors: 冀飞; 王凯; 王向飞
Original assignee: Tangshan Zhengfeng Iron And Steel Co ltd
Current assignee: Tangshan Zhengfeng Iron And Steel Co ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2020-09-22
Anticipated expiration: 2030-02-19

Abstract

The utility model relates to a device for crushing iron oxide cortex on the surface of discharged steel billets, which belongs to the technical field of mechanical equipment in the metallurgical industry. The technical scheme is as follows: the cross beam (9) is arranged above the furnace outlet roller way (6), two ends of the cross beam (9) are respectively and rotatably connected to the upright post (4), and the upright post (4) is fixed on the base (5); the crushing roller (2) is positioned between the cross beam (9) and the furnace outlet roller way (6), two ends of the roller (22) are respectively connected with the lower end of the oscillating rod (1) through a bearing (8) in a rotating way, and the upper end of the oscillating rod (1) is fixed on the cross beam (9). The utility model has the advantages that: the device has the advantages of being capable of conveniently crushing large-area iron oxide scales on the surface of the steel billet into small blocks, thoroughly removing the iron oxide on the surface of the steel billet through high-pressure water descaling, eliminating the influence of the iron oxide on the appearance quality and performance of a product, simple in structure, convenient to operate and practical, reducing the labor intensity of workers at the same line and improving the working efficiency.

Description

Device for crushing iron scale layer on surface of discharged steel billet

Technical Field

The utility model relates to a device for crushing iron oxide cortex on the surface of discharged steel billets, which belongs to the technical field of mechanical equipment in the metallurgical industry.

Background

At present, a high-pressure water dephosphorization device is arranged at the outlet of a heating furnace in a large-scale steel production line, and the purpose is to remove iron oxide on the surface of a billet. The iron oxide is in the form of ferrous oxide, ferroferric oxide, ferric oxide, which is the outermost layer of the scale, which is usually formed at temperatures above 800 ℃ and is present at high temperatures, typically 1% of the thickness of the scale.

Through observation and study on the cross section of the iron scale, a large number of holes with different sizes are distributed on the whole cross section. The number and size of these holes are continuously increasing as the scale grows thicker during the heating of the billet in the furnace. It is considered that the number and shape and size of these holes have a large influence on the descaling effect. If the pores in the scale are large, when the cracks reach the compact layer and the porous layer, the extension of the cracks to the steel base is stopped due to the stress relieving effect of the pores. For steel with small scale holes, the stress relieving effect of the holes is correspondingly small, so that cracks can penetrate through the holes and reach the surface of a steel base, a large-area thick oxide layer is formed on the surface of a steel billet along with the increase of the residence time of the steel billet in a furnace, the scale is difficult to remove in actual production, the scale on the surface is eliminated by independently increasing high-pressure descaling water pressure, and the effect is not obvious. The varieties of steel materials are different, and the thickness and the adhesive force of the generated iron scale are also different. Therefore, the magnitude of the striking force required for descaling is also different, and increasing the water pressure also causes problems such as an increase in the workload of maintenance of the high-pressure system, a corresponding increase in the accident rate, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a steel billet surface scale layer breaker of coming out of furnace can conveniently break into the fritter with the steel billet scale of large tracts of land on the surface, again through the high pressure water descale just can be thorough clear away the iron oxide on steel billet surface, eliminate the influence of iron oxide to product appearance quality and performance, solve the problem that exists in the background art.

The technical scheme of the utility model is that:

a device for crushing an iron oxide scale layer on the surface of a discharged billet comprises a swing rod, a crushing roller, an upright post, a base, a discharged roller way, a bearing and a cross beam, wherein the cross beam is arranged above the discharged roller way, two ends of the cross beam are respectively and rotatably connected to the upright post, and the upright post is fixed on the base; the crushing roller comprises a roller and a plurality of crushing teeth fixed on the surface of the roller, the crushing roller is positioned between the cross beam and the furnace discharge roller way, two ends of the roller are respectively and rotatably connected with the lower end of the oscillating rod through bearings, and the upper end of the oscillating rod is fixed on the cross beam.

The crushing teeth are uniformly fixed on the surface of the roller.

The crushing teeth of the crushing roller are pointed.

The crushing teeth of the crushing roller are conical and pointed.

The central line of the crushing roller is arranged in parallel with the central line of the furnace outlet roller way.

Adopt the utility model discloses, steel billet moves forward under the drive of the roll table of coming out of the stove after going out of the stove, and the crushing roller is under the effect of swinging arms, and broken tooth is scratched the iron oxide on steel billet surface, breaks into the piece, passes through high pressure water descaling again, gets rid of totally with the iron oxide.

The utility model has the advantages that: the device has the advantages of being capable of conveniently crushing large-area iron oxide scales on the surface of the steel billet into small blocks, thoroughly removing the iron oxide on the surface of the steel billet through high-pressure water descaling, eliminating the influence of the iron oxide on the appearance quality and performance of a product, simple in structure, convenient to operate and practical, reducing the labor intensity of workers at the same line and improving the working efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the crushing roller of the present invention;

in the figure: the device comprises a swing rod 1, a crushing roller 2, a bearing seat 3, a column 4, a base 5, a tapping roller table 6, a tapping billet 7, a bearing 8, a cross beam 9, crushing teeth 21 and a roller 22.

Detailed Description

The invention will be further explained by way of example with reference to the accompanying drawings.

Referring to the attached figure 1, the device for crushing the scale layer on the surface of the discharged steel billet comprises a swing rod 1, a crushing roller 2, an upright post 4, a base 5, a discharged roller bed 6, a bearing 8 and a cross beam 9, wherein the cross beam 9 is arranged above the discharged roller bed 6, two ends of the cross beam 9 are respectively and rotatably connected to the upright post 4, and the upright post 4 is fixed on the base 5; the crushing roller 2 comprises a roller 22 and a plurality of crushing teeth 21 fixed on the surface of the roller 22, the crushing roller 2 is positioned between the cross beam 9 and the furnace discharge roller way 6, two ends of the roller 22 are respectively and rotatably connected with the lower end of the oscillating rod 1 through bearings 8, and the upper end of the oscillating rod 1 is fixed on the cross beam 9.

In this example, referring to fig. 2, the crushing teeth 21 are sharp wear-resistant members of high strength, high temperature resistant, wear resistant material with a diameter of about 20 mm, and a plurality of crushing teeth 21 are uniformly welded to the surface of the roller 22. The wear-resistant part can easily scratch the scale layer on the surface of the billet, large-area scale is crushed into small blocks, and the scale on the surface of the billet can be thoroughly removed through high-pressure water descaling.

Referring to the attached drawing 1, a cross beam 9 is made of round steel, two ends of the cross beam are installed on two stand columns 4 through a bearing seat 3 and a bearing, the stand columns 4 are welded on a base 5, the upper end of a swing rod 1 is welded on the cross beam 9, the lower end of the swing rod 1 is rotatably connected with a crushing roller 2 through a bearing 8, and the swing rod 1, the bearing seat 3, the stand columns 4, the base 5 and the bearing 8 form a swing mechanism of the crushing roller 2.

After the steel billet is discharged from the furnace, the steel billet moves forwards at a certain speed under the drive of a discharging roller table 6, the sharp crushing teeth 21 on the crushing roller 2 scratch the ferric oxide on the surface of the steel billet, the steel billet is crushed into small pieces, and the ferric oxide is removed completely through high-pressure water descaling.

Claims

1. The utility model provides a device for breaking scale layer on surface of steel billet discharged from furnace, which is characterized in that: the furnace hearth furnace comprises a swing rod (1), a crushing roller (2), an upright post (4), a base (5), a furnace outlet roller way (6), a bearing (8) and a cross beam (9), wherein the cross beam (9) is arranged above the furnace outlet roller way (6), two ends of the cross beam (9) are respectively and rotatably connected to the upright post (4), and the upright post (4) is fixed on the base (5); the crushing roller (2) comprises a roller (22) and a plurality of crushing teeth (21) fixed on the surface of the roller (22), the crushing roller (2) is positioned between the cross beam (9) and the furnace outlet roller way (6), two ends of the roller (22) are respectively connected with the lower end of the oscillating rod (1) through bearings (8) in a rotating mode, and the upper end of the oscillating rod (1) is fixed on the cross beam (9).

2. The apparatus of claim 1, wherein the apparatus comprises: the plurality of crushing teeth (21) are uniformly fixed on the surface of the roller (22).

3. The apparatus of claim 2, wherein the apparatus for breaking scale layer on the surface of the discharged steel billet comprises: the crushing teeth (21) of the crushing roller (2) are pointed.

4. The apparatus of claim 3, wherein the apparatus comprises: the crushing teeth (21) of the crushing roller (2) are conical and pointed.

5. The apparatus of claim 1, wherein the apparatus comprises: the central line of the crushing roller (2) is arranged in parallel with the central line of the furnace outlet roller way (6).