JPS5829549A - Continuous casting device for steel - Google Patents

Abstract

PURPOSE:To produce beam blanks and square ingots selectively with the same device by using only the molds and support rolls as devices respectively exclusive for beam blanks and square ingots and using the rolls after the support rolls as devices common to both beam blanks and square ingots. CONSTITUTION:In the case of casting beam blanks, a beam blank mold 2 and support rolls 2 are equipped in a mold fixing position 1, and the beam blanks are cast with roll segments 6a-6j. The rolls 3 consist of supporting rolls 11 for flanges, supporting rolls 12 for webs and supporting rolls 13 for tips of flanges and support an ingot 80 with 8 faces. In segments 6a-6e, the ingot is supported at 4 faces with supporting rolls 14 for webs and supporting rolls 15 for flange side faces, and in segments 6f-6j, the ingot is supported at 2 faces with supporting rolls 17 for flanges. In the case of a slab, a slab mold 4 and support rolls 5 are equipped in the position 1, and a mold 800 is supported at 2 faces with support rolls 5 and segments 6a-6j, whereby the slab is cast.

Description

[Detailed Description of the Invention] Fukumei relates to a copper slow-moving aid device, the first of which is to provide a beam blank and a square steel piece (two) to provide a display that separates the two.

Therefore, in the present invention C2, square steel slabs are used as slabs, blooms, billets, etc., and in 'X Komei, slabs are used as representative square steel slabs, and therefore, for rpH4 combination, beam blanks are used. There are combinations of slabs, beam blanks and blooms, and beam blanks and billets.This will be explained in detail using the combination of the lower beam blank and slab.

Recently, due to the improvement in productivity and yield as well as superior quality, a method of casting using continuous beam blank casting equipment has been adopted for the former 2H-shaped steel reeds. However, the demand for shaped steel fluctuates significantly, and the demand fluctuates on a yearly and monthly basis, making it difficult to produce economically.On the other hand, continuous casting equipment cannot be economically produced until mass production. The means of production that yields the desired results, that is, the initial investment required, is extremely commercially demanding equipment, and therefore continuous casting of section steel has contradictory propositions.

As a result of efforts by the present inventors to solve the above-mentioned problems, the present inventors have succeeded in developing a continuous casting apparatus that can separately produce beam blanks and slabs, thereby enabling economical production. That is, the slab is suitable for production by continuous casting equipment, and good results can be obtained in terms of yield, quality, and productivity. Therefore, if the beam blank and slab are separated according to demand and demand using one continuous corner forming device,
This makes it possible to increase the operating efficiency of equipment, increase productivity, and produce economic effects.

By the way, the continuous casting of beam blanks has extremely difficult technical conditions, and only those with a small cross section can be loaded and returned in comparison with the previous model. It had never been thought of to make separate units using one continuous unit C2.

Therefore, the present inventors installed a mold and a support roll exclusively for beam blanks and square steel slabs in an uninvented device, that is, a continuous steel casting machine, and the rolls after the support roll were used for both beam blanks and square steel slabs. We have developed a continuous steel casting device, which is characterized by a structure in which molds and support rolls can be selectively installed when casting beam blanks or square steel pieces. We succeeded in achieving the purpose of production.

According to another proposal by the present inventors, there is a method of producing beam flanks and square steel slabs by replacing only the molds of each slab as appropriate, but the present invention is designed to deal with accidents such as breakouts. This has the advantage of requiring less repair time, and the fact that the support roll device directly under the mold makes it difficult to adjust the roll spacing, that is, the support roll can be quickly replaced together with the mold, reduces work preparation time. We are prepared.

Next, the present invention will be explained according to the drawings.

FIG. 1 is a schematic explanatory diagram of the apparatus of the present invention, in which 1 shows a mold fixing position during casting, 2 shows a beam blank casting mold, and 3 shows a beam blank slab support roll. 4 is a slab casting mold, and 5 is a support roll for the slab slab. 6
A-6J is a unit segment consisting of a plurality of rolls housed in a single frame, and is configured to be used for installation, replacement, repair, and maintenance.

The facing support roll device is a boat roll, which is characterized by an array of short pitch rolls that constitute a forced cooling zone directly under the mold, also referred to as the apron rollers mentioned above, which exerts a pulling force on the slab. There are vinci rolls that feed the slag, guide rolls that guide the slate, straightening rolls that smooth the slate, and action rolls (called OPO rolls) that prevent the slag from drifting. , in this embodiment, for convenience of customs, they are rejected and simplified in the -tJi segment6o
Reference numeral 7 denotes a gas cutting device, in which the piece is cut to a predetermined length by 1 m (U/J 1 m) (the piece 8 is fed to the next cutter by a forwarding roll 9!2).

Now, in the case of 16 in Figure 1 and beam plank casting slot/), the beam blank casting steel mold 2 and the beam blank 'DS piece the boat roll 6 are (directly connected, and installed at the Uj type fixing position 1 at the same time. In this case, the beam blank mold support roll 3 is configured as shown in FIG.
;0 is good]1// Condition and quality? Hold it firmly and guide it. For convenience of explanation, the flange support roll 11SJ, web support roll 12, flange end face support roll 16, bearings, butt configurations, advancing and retracting mechanisms, etc. are not shown in the figure for the sake of convenience. It is supported on a suitable frame and is equipped with a plurality of sets of said rolls 11, 12, 16.

The support mechanism for the rolls 11, 12, and 13 will be briefly explained using a four-sided roll support device, which will be described later.

Next, as the unused portion of the slab 80 decreases, the roll support device is rearranged in the order of the four-sided roll support device shown in FIG. 3 or the four-sided roll support device shown in FIGS. 3 and 4. Extracted by The roll support mechanism shown in FIGS. 3 and 4 is referred to as a four-sided roll support device 16 in the present invention, and details will be described later.

The four-sided roll support device 16 corresponds to, for example, the unit segments 6a and 6e in FIG. Normally, the four-sided roll support device used is the one shown in Figure 3, but after the web has been completely solidified, the four-sided roll support device shown in Figure 4 can also be used. In addition, when the slab 80 has almost no unsolidified parts or is completely solidified, as shown in Fig. 5, it may be advantageous in terms of cost. 17 supports the slab 80. This corresponds to, for example, unit segments 6f to 6j in FIG.

Now, in the well-known 8-curve roll support roll 10', the web support roll 12 is extremely small, as shown in the 61st case. Therefore, the economic benefits of using a beam blank and slab hooking device have never been considered.

By the way, with the second drawing web support roll 12t, for example, length 400 to 700 m and T6, it becomes possible to economically cast both a beam blank and a slab by placing them on the ground. In other words, the key point of the present invention is that the Kueb height is 600 to 1
The goal is to use a single casting machine to create both a gigantic beam blank of 200 mm, which has never been cast before, and a gigantic slab with a width of 400 to 700 mm.

Now, in order to achieve the first object of the present invention, it is desirable that the web direction rolls 12, 14, and 17 be able to move forward and backward in the direction of the central axis of the slab 80 (it is desirable that the rolls on one or both sides be self-made). .For the equipment for that purpose,
An embodiment of the four-sided roll indicating device 16 will be described with reference to FIGS. 7 and 8. FIG.

FIG. 7 is a schematic top view of an embodiment of the four-sided roll support device 16, in which the flange support roll 15 supports the cast piece 80 while rolling in contact with the flange of the cast piece 80. 18 is a bearing pedestal for the first flange support roll 15;
The frame 19 is fixed to the screw device 20.
It is fixed to a shaft 21 that is engaged with the shaft 21 and is operated to move forward and backward. The worm device 22 is engaged with a worm shaft 23 operated by a drive device (not shown).
Through L12, the position of the flange support roll 15 is determined 4J0, and the missing support roll 14 is similarly connected to the bearing pedestal 24.
, frame 25, @26, worm device 27, screw device 2ε;? 60.61 The forward and backward movement mark (with two supports h) is positioned by the operation of the worm shaft 29.60.61
are the worm devices 26 and 27, and the screw devices 20.
28 in the frame, in this example the fixed frame 60.61 is connected to the ball).

In this embodiment, the flange support roll 15 is designed to be able to move forward and backward, but if the flange support roll 15 is of a fixed type, the effect may be better.

It will be explained according to the 7th ::14s diagram.

Figure 8 shows an example of 4 rolls and 16 different performance distributions (
For convenience of explanation, 2 or 7 haru 411 is a road rage, A-A
Turning from the line, a beam blank or slab 80 is placed to the left,
Situation 2 shows 800 slabs on the right side. The flange support roll 15 is attached to the flange of the slab 80 and supports the slab 80. Reference numerals 3 and 18 are bearing pedestals that rotatably support the flange support roll 15, and the fixed frame 1
It is fixed at 9. Next, the web support roll 14 is rotatably supported on the bearing pedestal 4, and the nil bearing pedestal 2
4 is fixed to the frame 25 and rotates λ.

The frame 25 is moved forward and backward by the screw device 28, which is operated via a worm shaft 29 and a worm device 27, which are engaged with a screw device i''L28 and are operated by a screw device (not shown). Move freely.

Therefore, in this embodiment as well, the web holding roll 4 can have any thickness (two or more,
←; Slab 8 with a thickness of 9 (also in contact with the river, which supports it and allows easy FAT).

Compared to the table in Figure 7 rυ, this m8 measuring device has a structure that does not move the flange support roll 15 back and forth, so it has the advantage of lower equipment costs, and when casting slabs,
Since there is no need to support the short side of the sword, in that case, a sword that actively uses the device shown in Figure 8 can be expected to be economically effective in the Sung Dynasty.

Next, an overview will be given of an embodiment of the apparatus which can be selectively installed and reinstalled with a beam blank according to the invention, a mold made of a rectangular steel piece, and a nabor roll.

No. 91M is a schematic side view showing the Q4 mold, the support roll and the subsequent roll arrangement, in which the beam blank Izuoka mold 2 is mounted on the mold oscillation table 66 via the mold pig frame 62. The on-lane optical eccentric cam 64 is an on-lane optical power transmission>a shaft 65
, through the onration power transmission gear device 66...J-type on-lane Yondepur 66n @1-ru. Reference numeral 67 is a beam blank 8ifI roll handling device, which is arranged close to the @ mold 2 so as to support the slab from the beam blank casting mold 2.
■Through the mold device 36, the beam blank, Rij @
The mold 2 and the MiJ beam blank 81 and the roll holding device 67 are placed in front of a common pedestal 38, and the common pedestal 68 is further fixed to a base frame 69 (removable).

Reference numeral 40 denotes a stopper for solidifying the engagement between the common frame 68 and the base 1d frame 69.

Because of this structure, after the casting of the beam blank is completed, the power transmission mechanism and clamp table described later,
After disengaging the cooling water supply engagement mechanism from the common pedestal 38, the two lifting pins 41C provided on the common pedestal 38
2 are fitted together and the lifting tool 42 is lifted by the lifting hook 46 of an overhead crane (not shown), the common pedestal 38 holds the beam blank casting mold 2, the beam blank 8-curve roll pattern table 67, and the related parts. It is lifted up with the above-mentioned oscillation-related equipment mounted on it.

In this way, the common pedestal 38 can be carried to a predetermined position and placed on standby in preparation for the next casting, or repairs can be carried out. In almost the same way, the slab-shaped square type and the boat roll C were placed on a common pedestal and then fixed to the base frame 39. This can be written on one page (see Rule 19).

Slab @ casting mold related equipment C There are two support rolls. Other than the roll support device, it is the same as the beam blank casting @ mold related equipment described above, so please explain? Omitted. 9th
Figures 44 and 45 show schematic cross-sections of the flange end support roll 16 and the web support roll 12. It is preferable to have a narrow pitch in the roll arrangement and a fairly large number of each roll in order to maintain the shape and prevent breakouts. .

Next C2, 46 is 4i111, which can be used as a beam blank/slab.
01 le Bunsamurai j'mi', 47.48 indicates the 19+ tune of Kuebbutalol 14.

1] The four-curve roll holding device 46 for both beam blank and slab use is constructed into unit segments as shown in the figure.
Via the mounting bracket 49, the base frame 50 is detachably attached to the base frame 50 for convenient repair. 5
2 is engaged. 56 is a web support roll 47.4
It is a moving screw device that can move backwards freely between the centers of the 8th and 1st male pieces (2 m7), 54 is its drive shaft, 55 is a drive hydraulic motor. Web support rolls 47, 48
can be set at an appropriate position using the above device depending on the web thickness of the beam blank and the thickness of the slab.

56 is a cooling water supply pipe viewing device, which is a moving cylinder device 5.
7, it is connected to a cooling water path built into the common frame 38. 58 is the moving cylinder device 5
7 pedestal.

59 is onration power source motor 60, transmission @
61 (2 power transmission path (transmission provided in the middle of υ)) When connecting the child shaft 4.Y, joining, and resetting, both 1 car frame 68 Create a variable engagement cylinder 667, and connect it to the L + FF mount 68 in the same order. 64 is a pedestal of the old motor 60.

With the above structure, in the present invention, the beam blank and the slab 80 as shown in FIGS.
It is possible to quickly switch between 0 castings and meet demand.
The most economical production possible.

[Brief explanation of the drawings] No. 1 is a schematic explanatory diagram of the uninvented device, Figs. 2, 3, 4, and 5 are schematic explanatory diagrams of the beam blank casting device of the present invention, and Fig. 6 is a general outline of the well-known 8-sided roll bunsamurai device, the 7th ward is the 7th block, and the 8th is the non-invention. 7 hakaru series and saki casting (υ Actual Mu example schematic diagram, figure 10, funeral figure 11 are the 4 predetermined schematic diagrams of the roll buta surface in Slabushi, J-Ken. 1; Saki-type Mukaisei cabinet) Straight 2; Beam blank casting mold 6; Beam blank slab support roll 4; Nulab casting J
Cargo type 5 nislab piece support rolls 6a to 6 Unit segment 7: Gas cutting...r device 8.8U; Slab 9; Seiji wide roll IJ; 81fl roll pattern holding table 11; Roll 12; Web delivery roll 13; Flange 41Ti1 holding roll 14; Web support roll 15; Flange holding roll 16: 4-sided roll support device 17; Fufunji Gasuiku Kyo Samurai roll 18: Bearing pedestal 19; Frame 20; Screw Device 21; Shaft 22: Worm device 23; Worm shaft 24; Bearing pedestal 25; Frame 26; Shaft 27; Worm shaft 28;
51: Solid 7y frame 62; Chest support frame 56; M-type on lane Yonde pull 64; Ozu lane Yonkoi 1lii! heart cam 65;
Oscillation power transmission 11 15-66: Oscillation power transmission gear device 67; Beam blank 8r [i] Roll fork holding table 38 common pedestal 6
S; Foundation frame 40; Stopper 41: Lifting pin 42; Lifting is 46; Lifting hook 44; Holding roll between flange ends 45; Kuebbuta roll 46; Four-sided roll holding table for beam blank/slab 47; Kuebbuta roll 48 ; Web Butalol 49; Spray fitting 50; ShiN foundation frame 51; Fixture 52; Old foundation bamboo 1 hollow beam 56; Moving screw installation 54; Drive shaft 55; Hydraulic motor for drive b◇; Supply pipe destone step straight 57; Moving cylinder table 58: Pedestal 59; Transmission shaft engagement table placed []; Boo 77 lane Yong Gai power light production motor 61; Transmission shaft 6-62; Heading table 66; Holding Change history cylinder 64; pedestal port 4 illustration grass 70 illustration construction//illustration procedure amendment (voluntary) 1939 Last September 3011' Patent Office Chief Island Lll Spring 4 Seal Indication of the Tono 1 case Showa 5 (Patent Application No. 1213154 No. 2 Name of the invention 354 Ren II Ko, both) Currency [r I 3, Person making the amendment Relationship to the case Patent applicant Location 2-6-3 Otemachi, Chiyo 11-ku, Tokyo Name (665) )
Nippon Steel Stock Exchange 1 Representative Takeshi ITI Yutaka 4th Director Address 3-3 Nihonbashi, Chuo-ku, Tokyo Mgo No. 1 5 Amendment Order No. 1, Showa Month, Month (Shipping Port) ■
) Details - 10 pages in total, 1 line "Fixed" Delete all. 2) Same as above 1] Box J4-15 rows [on-lane control power transmission tooth 11 [straight line 36] deleted, [mold support frame 32]
Insert the link. Procedural Amendment (U'A'jb) September 1, 1981 Kazuo Wakasugi, Commissioner of the Ikuchiji Temple Office Indication of the case 1988 Patent Application No. 28154 No. 2 Title of the invention Steel continuous casting device, amendment Person involved Relationship with the case Patent applicant Location
2-6-3 Otemachi, Chiyoda-ku, Tokyo Name (66)
5) Nippon Steel Stock Company Representative Yutaka Takeme, Agent Address: Kato Building 4, 3-3-3 Nihonbashi, Chuo-ku, Tokyo 103-271-6959
F Name (6193) Patent attorney Tatsuo Chanoki, Date of amendment order Month 11, Showa (Date of dispatch) Number of inventions increased by amendment Contents of amendment (1) Specification page 5, line 20 Flange support roll 11
is corrected to the flange fl11 surface support roll 11. (2) Same page 6, line 2 Correct the flange end face support roll 13 to the flange tip support opening to 13. (3) Same page 7 line 4 The flange both end surface support roll 17 is corrected to the flange support roll 17. (4) Page 8, lines 9, 11, and 19, page 9, line 9. Correct the flange support rolls 15 in lines 1, 18, and 20, and line 15 on page 10 to flange side support rolls 15, respectively. (5) Same page 10, 1 line, frame 19 to frame 31
Correct to. (6) From page 11, line 13 “...before” to line 18 of the same “...
・Delete up to `` and insert the first sentence. ``'' The second end is close to the mold 2, and the mold support frame 3
2 is fitted and supported so as to be able to slide in the direction of mold oscillation movement, and the lower end is fixed to the common pedestal 38. The receiver is loosely fitted and supported on a pedestal (not shown). Therefore, the beam blank eight-sided roll support device 37 as a whole can be slightly oscillated around the lower end, and does not hinder the movement of the mold onsilsion table 33.'' (7) Flange, page 13, line 5 Correct the end support roll 13 to the flange tip support roll 13. (8) Correct the flange end support roll to 13: Flange tip support roll, page 6, line 5. (9) Correct the flange tip support roll, page 6, line 3. 11: Correct the flange support roll to Uni: Flange side support roll. aO) Same page 16, line 7 Correct the 15: Flange support roll to 15: Flange side support roll. αIJ P11G page line 9 Correct 17: Flange both end surface support roll to 17: Flange support roll. (12+ Same page 17 line 6 Correct 44: Flange end support roll to 44: Flange tip support roll.

Claims (1)

[Claims] In this machine, the mold and support roll are used exclusively for beam blanks and square steel slabs, and the support roll and 14 other rolls are used as a dual-purpose machine for beam blanks and square steel slabs. Or, when making a square piece of steel, there is a page for installing a slow string of steel that allows you to select and install the mold and the support call.