JPS60121286A - Descaling apparatus - Google Patents

Abstract

PURPOSE:To obtain the titled apparatus capable of descaling simply, easily and effectively by quenching scale-deposited material of high temperature with the first water discharging means and thereafter by constituting said apparatus so as to discharge water from the second water discharging means having water discharging capacity larger than the first means. CONSTITUTION:In a descaling apparatus 70 for descaling the depositions on the surface of a seamless steel pipe 50 by discharging pressurized water from a descaling nozzle 40 while transferring said pipe 50 of high temperature introduced from an introduction port 74 provided with a penetration guide 74 in the direction shown by an arrow, said descaling header 40 is constituted by the first descaling header 40A and the second descaling header 40B which are provided to the upper- and lower-stream sides respectively in the direction of relative transferring of said pipe 50. The power water is discharged from nozzles 42 of said header 40A to quench said pipe 50 and to crack the scales, and successively water is discharged more powerfully from said header 40B to descale the scales effectively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stool removal device, and more particularly, to a stool removal device. !
After 31"ii'+, apply I on the surface of the scale-generating material suitable for use in removing scales from the stomach and winnow!11.
In order to discharge the ILI pressure liquid, the scale generating material is relatively movable in the longitudinal direction.
The present invention relates to an improvement in a scale removal device in which scale is removed from the scale by ejecting liquid from the liquid ejecting means while relatively moving the scale generating material and the h'i 112 means.

When rolling seamless steel pipes, during the rolling process,
Seamless steel pipes are, for example, IJI steel pipes as shown in FIG.
After being reheated by the I-thermal furnace 10, the scale removing device 2
0, and here, the school generated on the outer surface is removed and then the reducer, for example, the stretch reducer 30
sent to.

Conventionally, the scale removing device 20 is a ring-shaped device in which nozzles 42 for discharging pressurized water are arranged radially toward the center of the ring, as shown in FIGS. 2 and 3, for example. A second inlet 62 is formed which surrounds the descaling l\\ ivy 40, the descaling l\\ ivy 40 and its vicinity, and into which the seamless steel pipe 50 is introduced. 60, said inlet 6
2.The introduced publications include 1.50 old editions.
\ Pass through the center of the ivy 40 and pass through the seamless steel pipe 50] 11. Then, spray water from the nozzle 42 (the water pressure will cause the scale on the outer surface of the seamless steel pipe 5o to 1) = There is something. Figure 11
No. 641, 1 meter input for introducing a seamless steel pipe into the scale removal device 10? There is.

In this i Yorai's scale removal β2o, there is a SL of 4 people written by Takane, 1 story, or h of the nozzle! The water 1 cools down rapidly, and this causes cracks to form on the scale on the surface of the surface. .

However, with conventional scale removal devices, the scale removal capacity cannot be easily changed.
In some cases, scale removal may be incomplete, especially when metals such as alloy steel peel off.

If scale removal is incomplete, uneven cooling due to the presence of 1% scale, bending or hilling of the steel due to a difference in cooling rate of 1μ, and scale flaws caused by scale adhered during rolling will occur.lI7! It becomes a cause.

As a countermeasure to the above problem, it may be possible to increase the water pressure of the pump to improve the scale removal performance, but large capacity pumps are expensive -C, and the performance of the pump is also limited, so conventional equipment cannot However, the most effective way to remove scale was to solidify it.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a scale removing device that has a simple structure and can easily remove scale.

The present invention includes a liquid discharging means that can be freely moved between the scale generation material (in the longitudinal direction of the scale generation material for discharging a pressurized liquid onto the surface of Δ), and the scale generation material and h In the Ic scale removal apparatus, the scale of the scale-generating material is peeled off by +lv discharge from the liquid discharge means while the liquid discharge means is moved visually. A first liquid discharging means disposed on the upstream side in the direction, and an M2 liquid discharging means disposed on the downstream side of the first liquid discharging means and having a high discharge capacity. By having a liquid discharge means, the above object has been achieved.

In the present invention, C is caused by the liquid discharge from the first liquid discharge means, and the scale is caused to crack by rapidly cooling the scale generation 4a, and then from the first liquid discharge means FIl. flf: ) High pressure 'a from the second liquid discharge means with high J
/ Peel off the scale with Ik out (・2yo-)! The scale can be easily removed since it is made to have a 1/2-tight structure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the spacing.

On the real side, install the scale removing device 7o on the fourth
As shown in the figure, pressurized water is applied to the surface of the second seamless steel pipe 50, and while moving the first seamless steel pipe 50, , to remove the scale from the ivy 40 (succession: I). 40 to the first descaling which is I'11+ r on the upstream side in the moving direction of the seamless steel pipe 50.
A second descaling header 40B is disposed downstream of A and has a higher output capability than the first descaling header 40A.

The first descaling header 40△ and the second descaling header 40B are both formed into a ring shape, and pressurized water is sprayed onto the inner circumference of each ring.
The nozzle 42 for
It is located in two locations.

These first and second descaling header data 40△
, 40B is a seamless steel pipe 50 into the scale removing device 7o.
The seamless steel pipe 50 is disposed substantially perpendicularly to the moving direction of the seamless steel pipe 50, facing the introduction lower 2 for introducing the seamless steel pipe 50.

Further, the first descaling ivy 40A and the second descaling header 40B are arranged such that the nozzles 42. It is arranged so that

The first descaling header 40A has, for example, a repulsive force 1 b O'p /'ci, water discharge @420J2/min
For example, the second descaling header 40B has a power of 150 kgy'c! , hl water fii 96
0 A/min.

Near the introduction lower 2, there is an entry guide 74 for guiding the coarse grainless steel pipe 5o into the scale removing device 10, and an ivy 40B for ejecting the ivy to the first descaling header 40A and the second descaling header 40A. A water-stop lid 76 and a drain plate 78 are attached to prevent water from leaking out of the scale removing device 70.

The entry guide 74 is formed with an opening that gradually becomes wider toward the upstream side in the direction of movement of the joint heat steel.

The water stop cover 76 is, for example, a scale remover @
70, facing the introduction lower 2, the upper end 7 (3A is used as a filler) and the lower end 76B is seamlessly filled.
Only the inner movement direction side l\ of the tube is supported in a swingable manner d5
A scale removing device 70 for the water released by closing the introduction lower 2 when the pipe 5o is not passing through.
This prevents leakage to 9 sites.

In addition, silica rubber 76G is pasted to the 811 minute portion of the water stopper M76 corresponding to the introduction lower 2 and the portion that comes into contact with the seamless steel pipe 50.

The draining plate 78 (made of flammable rubber, arranged in double layers between the inlet 12 and the intruding kite 14, so that it is released when the Sakakime Mukagane passes through the 07 heavy 1 -C) The water draining plate 18 is designed to suppress leakage of water to the outside of the scale removing device 70. Furthermore, the draining plate 18 can be replaced with an appropriate size according to the outer diameter of the seamless steel pipe 20.

Next, the operation of this embodiment will be explained.

Introducing the seamless steel pipe 50 via the penetration guide 74 I''7
From 2 onwards, it is introduced into the scale removal equipment @70.

At this time, when the seamless 14 pipe 50 pushes the water stopper 76 and enters the scale removing device 70, water is discharged from the ivy 40A and the second descaling header 40B to the first descaling. Ru.

The seamless steel pipe 50 has a first descaling l\ivy 4
It is rapidly cooled by water discharge from the OA, and as a result, cracks occur in the scale on the surface of the seamless steel pipe 50, and the scale becomes easily peeled off. Then, a second descaling l\
Since water is discharged from the ivy 40B at high pressure, the seamless steel pipe 5
The scale on the surface of 0 is peeled off by water pressure.

As the scale removal action progresses and the seamless steel pipe 50 contracts and its rear end passes through the introduction lower 2, the water stopper lid 7
6 swings downward to close the introduction lower 2, and at the same time, the first descaling header 40A and the second descaling header 4°13 to /j5L are also stopped. This completes the descaling of the seamless steel pipe 50.

In this embodiment, the ivy 4O to the first descaling
Nozzle 42 of A and second desk link ＼ ivy 40B
Since they are arranged in a staggered manner, the positions where the HL water is applied are different, which further improves the scale removal effect.

Note that the relative positional relationship between the nozzles 42 of the first descaling header 4OA and the second descaling header 40B does not necessarily have to be shifted.

In addition, in addition to the water stop i76, J, S, seamless steel pipe 5
Poems where 0 has not passed introduction lore 2, e.g. seamless 1
Immediately after the four pipes 50 pass through the introduction lower 2, the introduction lower 2
Water sprayed or scale removed due to closure
It is possible to prevent leakage outside 811 of 0. Furthermore, we accept (
When the seamless steel pipe 50 is passing through the introduction lower 2, b (sprinkled water 11 - (゛Kill.

a3. In the above embodiment, the first telescaling l\vine 40A and the second death arrow ring l\vine 4.
Whether the OB is watered at the same time or not, the present invention
For example, the first descaling header 40A and the second descaling header 40B are provided with flow rate adjustment valves upstream of the water supply side to the scale generation shrine 1, 6 Shi'shi, that'a sail! The descaling header used by the 1 lil valve adjustment and the amount of fresh water from the descaling header may be freely selectable and adjustable. For example, if the descaling header is a selection type, in the case of a rolled steel pipe with an outer diameter of 80 degrees, the second descaling l\inter 40B may be used for one cycle, and if the rolled finish outside diameter is 1 yen 90 Ill Il Ya 14
In the case of a 6-stop small diameter alloy steel mesh pipe such as chromium molybdenum steel, connect the first and second scale pipes to the pipes 40A and 40B.
It is best to spell it out as if you were using it.

Additionally, in the above embodiment, the first descaling header 40A and the second descaling header 401
3 and 12 nozzles 42 each, but nozzle 4
The reason for 2 is not limited to this.

Since the present invention has been combined as described above, the present invention has a simple configuration (,
Unfortunately, without using a large capacity pump of 8 or more losses,
Scale can be easily removed. By eliminating the unevenness of cold fJI due to the omnipresence of scale and the difference in cold I;II speed 1, it is possible to eliminate bending on the scale generation side, and also to prevent scale attachment during rolling. It has the advantageous effect of being able to remove scale scratches, etc., and making the finish of the side where the scale occurs beautiful.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a part of a conventional seamless tube rolling Fl 1 m, Fig. 2 is a sectional view showing the configuration of a conventional scale removing device, and Fig. 3 is a FIG. 4 is a cross-sectional view taken along the line -■, showing the structure of an embodiment of the scale removing device according to the present invention. 40... Descaling header, 40△... First descaling header, 40B...
- Second descaling header, 42... Nozzle, 50... Seamless steel pipe, 70... Scale removal device. Deputy, Hito Takaya Ron (and 1 other person)

Claims (1)

[Claims] <1) In order to release hu pressure liquid onto the surface of the scale handle H, in the longitudinal direction of the scale generating material (Ill sealed movable/
1 and tl I=h'1ii 2 means is 1 glazed, and the scale is generated because the hII liquid means and the first pair are not moved.
ilQ h'i output from the recording liquid means, thus removing the scale generated H from the scale removing device. Relative transfer of photogenic material!I!IJ /11 A first liquid discharge means disposed on the upstream side, and
A liquid hand F is disposed on the upstream side of the
What should I do with the second liquid 10F, which has a higher ability to produce water?