JPS59159261A - Cutting method of billet in continuous casting installation - Google Patents

Abstract

PURPOSE:To prevent the deterioration in the quality and yield of a product on account of the burrs sticking on a billet during cutting by cutting upward the billet from below in the stage of cutting the billet with a torch type cutter which is provided on a carriage phased with the movement of the continuous casting billet and moves in the transverse direction of the billet. CONSTITUTION:A standby carriage 1 is moved cooperatively with a billet S via a clamper when the billet drawn continuously from a continuous casting machine arrives at a cutting area. A torch 3 traverses at the same instant in the transverse direction of the billet S and the billet S is cut upward from below the same by the flame ejected from the torch 3. A roller 4 positioned in the part where the carriage 1 passes is retreated by a lifting cylinder 6 which is successively actuated by a limit switch operated by a shifter 7 provided alongside the carriage 1 so as not to hinder the passage of said carriage. The roller is automatically reset after the passage of the carriage 1. The carriage 1 is reset when the cutting of the billet S ends. Then the slag formed on the cut billet S during cutting does not droop from the cut surface and even if the slag sticks as a burr atop the billet S, the amt. thereof is slight and is easily removable before rolling.

Description

[Detailed Description of the Invention] This invention provides f-pieces in continuous casting equipment. , relates to an improvement in a method for cutting slabs to a specific length.

In general, the continuous casting pieces that are continuously pulled out from the continuous casting machine are clamped and moved in unison with the continuous casting pieces during the cutting process. Moving burner type cutting device', tz m g
A slab cutting device that cuts a continuously cast slab in the vertical direction from an upper blade is known. In addition, during the cutting process, the cutting harp passes over the many rows that support the continuous casting piece, so the molten M that scatters from the cut surface and the slag that flows out from the cut surface cause slag. to prevent damage to the surface of the sufu
The arrangement of J-type rollers is also well known and is used as a highly efficient continuous casting strip cutting device.

However, even such a continuous cast piece cutting device, that is, a device that cuts the cast piece vertically from above the Wj piece, is not without problems. This is because during continuous νf slab cutting, the slag that flows out from the cut surface hangs down to the cut area and adheres as burrs on one side of the slab7, and this slag coats the surface of the rolling roll during rolling. In addition to damaging
Will the quality of the product deteriorate due to the inclusion of firmness, or will the part be affected? When cutting and removing, there is a drawback that the yield of the product decreases.

This invention has been made to address these conventional problems, and its gist is to provide a cart with a cross-sectional shape that runs in synchronization with and in the same direction as the continuous casting piece, and to
This method of cutting a continuous cast piece is characterized by attaching an upward burner capable of self-propelled in the IJ force direction and cutting the continuous cast piece from below in the −F direction.

Hereinafter, the embodiments shown in the drawings will be described in detail.

Reference numeral 1 denotes a cart having a square cross-sectional shape when viewed from the front, and includes a torch unit 2 and a bar 3 that can be self-propelled in the width direction of the slab.
It has an upper hand-operated support that runs on tracks built on both sides in the direction of movement of the slab S, which moves through the internal opening, along a large number of loaves arranged therein. It is self-propelled in conjunction with a drive device (not shown) equipped on the trolley L, and is attached to the slab S by the operation of a clamper (not shown) equipped on the trolley. It is configured to move in synchronization with the movement of the slab S. The rollers 4 in the cutting area are also electrically linked by means e, e.g. limit switches, so as to be sequentially retracted from a lifting cylinder operated in conjunction with the movement of the carriage l.

Is there an uninventive method using the slab cutting device configured as described above? By carrying out this operation, when the slabs continuously drawn from the continuous casting machine hit the cutting area, the trolley l, which is waiting at part A6, is taken to the fXf slab S via the clamper 2 (not shown). At the same time, the burner 3
l] direction, and the slab S is
is cut from the T.'' direction towards the person. At this time,
The roller 4 located in the passage section 3 of the trolley l is
To prevent this from happening, the limit switch operated by the shifter 7 installed on the side of the trolley 1 sequentially activates the lifting and lowering solintaro, and when the platform T4N'1 passes, it automatically returns to its original state. When the cutting of the slab S is completed, the clamper is released, and the truck 1 is quickly returned to its original standby position by the operation of the drive device.

The VF piece S cut in this way does not have the possibility of the slag generated during cutting hanging down from the cut surface, and even if it does not cause burrs (=j foil) on the top surface of the cast piece S. However, the amount is very small, and it is possible to easily remove it from the upper surface of Wi B-s, and it is possible to completely eliminate the conventional problems.
Sa-ru.

[Brief explanation of the drawing]

The drawings show twenty-four embodiments suitable for carrying out the invention, and the first
The figure is a front view, and FIG. 2 is a side view along lines C and Il of FIG. 1. ]...Unit J1" 2...1...chi, 2, 1, 3...harness 4...shi1-ra 5...comfortable 6...4 descending cylinder 7...futer S...・Hook piece applicant: Sumitomo Heavy Industries, Ltd. Fukudai Sotojin - Jr.
Spontaneous) June 61, 1980 Kazuo Wakasugi, Commissioner of the Japan Patent Office 1. Indication of the case 1988 Special Patent No. 51 pz 1 No. 30826 2 Title of the invention Method for cutting slabs in continuous casting equipment 3 Relationship with the Nagisa case to be amended Patent Applicant 4, successor attorney Address: Aihara Hill, 1-9-10 Nishi-Shinbashi, Minato-ku, Tokyo Name (7293) Patent attorney Isamu Ohashi 5 Recipient of amendment order 6. Number of inventions increased by amendment Patent Application No. 58-30826) 1, page 1, line 7 (2 locations), page 3, lines 2 and 4, page 3, line 11, page 4, line 3, page 5 In lines 4 and 5, page 6, line 11, correct "burner" to "torch". 2. Amend Figure 1 of the drawing as shown in the attached sheet. Applicant Sumitomo Heavy Industries, Ltd. Sub-Agent Patent Attorney Isamu Ohashi

Claims (1)

[Claims] Continuous ν+ A truck with a cross-sectional opening shape that moves in sync with the six pieces is provided, and the truck is capable of self-propelled in the width direction of the continuous cast pieces.
A burner oriented toward χ1 is used to cut the continuous t44 piece passing through the internal opening 1'' of the truck from below upwards. A method of cutting 71 pieces using continuous casting equipment.