JPH0638615Y2 - Tundish deposit welding machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an apparatus for melting and removing deposits of tundish, which is mainly used for continuous casting in the steel industry.

[Conventional technology]

Repair of grooved structures such as tundish and tap gutter,
As described in Japanese Examined Patent Publication No. 59-43703, a device that cuts residual iron using a cutter lance and magnetically adsorbs it and conveys it, and mechanically crushes slag and refractory and discharges it through a suction device. Is used.

In addition to the above, a method in which an operator uses an oxygen lance to melt and remove residual iron manually is also widely adopted.

[Problems to be solved by the device]

The apparatus described in Japanese Patent Publication No. 59-43703 is useful at room temperature or in a temperature range close to room temperature, but at high temperatures such as
It is difficult to use in a high temperature range of 0 to 1000 ° C because the equipment is thermally damaged.

Further, the means for the operator to grasp the oxygen lance and melt and remove the residual pig iron has many problems in terms of safety and efficiency.

It is an object of the present invention to provide a device for safely and efficiently removing and removing deposits such as residual iron (residual steel) and slag attached to a tundish in a high temperature range of 500 to 1000 ° C.

[Means for Solving the Problems]

In order to solve the above-mentioned problems and achieve the object, the tundish deposit welding machine according to the present invention is capable of traveling freely via wheels on a track laid parallel to the long axis of the tundish. A traveling trolley, a guide rail horizontally installed on the floor of the self-propelled trolley, and a lance beam that movably mounts on the guide rail and holds an oxygen lance forward and backward so that the lance beam can swing vertically and horizontally. A wall for supporting the self-propelled beam carriage, a through hole through which the lance beam can freely project, a spray-adhesion-preventing air ejecting device surrounding the through hole, and a television camera viewing hole, and a wall for covering the self-propelled beam carriage and the guide rail. A body-shaped cover, an oxygen supply pipe joint fixed to the upper portion of the body cover, a bendable oxygen supply pipe connected between the pipe joint and the oxygen lance, and the peephole. It is equipped with a television camera which is fixed to the 凾型 cover beside.

In addition, the self-propelled beam carriage is equipped with a lance beam vertical tilting cylinder device and a lance beam horizontal turning cylinder device, and a support pole that supports the lance beam so that it can swing vertically and horizontally. It is configured to be bendable via a swivel joint, and is configured to be capable of projecting outward from the through-type cover through hole.

Further, the oxygen lance is supported by a trolley beam which is movably mounted on the lance beam so as to freely project, and further has a ceramic nozzle at its tip.

[Action]

The tundish deposit ablation device according to the present invention is equipped with an oxygen lance for ablation, which is installed continuously on a self-propelled trolley that moves in parallel with the tundish with the opening face sideways. Since it is constructed so that it can be ablated,
Even a long tundish can efficiently perform fusing work.

The oxygen lance is held by the lance beam so that it can move back and forth.
Moreover, since the lance beam is supported by the self-propelled beam carriage and freely protrudes from the through hole provided in the descent-shaped cover and moves vertically and horizontally, the oxygen lance exactly faces the desired position of the tundish. Since the flow line can be determined smoothly and the flow line can be smoothly determined, efficient fusing can be performed.

In addition, the scenic cover protects the self-propelled beam carriage and the oxygen supply pipe from thermal damage and has the TV camera and its viewing hole, so that remote control allows safe and efficient work.

Further, the oxygen supply pipe is configured to be bendable and moves smoothly following the advance and retreat of the oxygen lance, so that the oxygen supply is reliable and the damage is small.

〔Example〕

The present invention will be described below with reference to the schematic side view of FIG. 1 and the schematic plan view of FIG.

1 is a tundish and is placed horizontally. Reference numeral 2 is a steel injection port, and 3a and 3b are tracks laid parallel to the long axis of the tundish 1.

The self-propelled carriage 4 moves freely on the tracks 3a and 3b via the wheels 5a and 5b.

Reference numeral 6 denotes a flat cover mounted on the self-propelled carriage 4, which is usually formed of a noncombustible wall body such as a structural steel plate or a heat resistant steel plate.

Thus, the front wall 6a has a ceramic nozzle at the tip.
An oxygen lance 7 having 7a and a lance beam 8 for supporting the oxygen lance 7 are provided with a through hole 9 through which the lance beam 8 can project and a television camera viewing hole 10.

Further, an oxygen supply pipe joint 11 is fixed to the flat cover 6, and an oxygen supply pipe 13 having a swivel joint 12 is connected between the oxygen supply pipe joint 11 and the oxygen lance 7.
The oxygen lance 7 is configured to follow the advance and retreat of the oxygen lance 7.

The oxygen lance 7 is held by a holding carriage 14 which is mounted on a lance beam 8 so as to travel freely.
The movement of 14 is performed by the chain drive mechanism 15, for example.

Next, 16 is a guide rail horizontally provided on the floor of the self-propelled carriage 4, and a self-propelled beam carriage 17 is movably mounted on the guide rail 16.

The self-propelled beam carriage 17 supports the lance beam 8 via a support pole 18 so as to be vertically and horizontally swingable, and further, a tilting cylinder device 19 and a left and right rotating cylinder device for tilting the lance beam 8 up and down. Equipped with 20.

Further, 21 is a tilting arm that is moved by the tilting cylinder device 19, 22 is a TV camera, and 23 is a self-propelled carriage 4.
2 shows a driving motor of the. Further, 24 is a splash adhesion prevention air injection device surrounding the periphery of the through hole 9, and molten splashes such as residual steel and slag generated by oxygen shaving adhere to the periphery of the through hole 9 or are trapped from the through hole 9. In order to prevent invasion into the cover 6, air, N ₂ gas, or the like is injected, and a ring-shaped box body having a large number of gas injection holes is preferably used. Further, 25 is a chain drive mechanism for driving the self-propelled beam carriage 17.

The above-mentioned device is electrically connected to and operated by a control room (not shown) and is supplied with oxygen. However, since these are well-known techniques, description thereof will be omitted.

Next, the ablation is performed as follows using this apparatus.

When the drive motor 23 is driven to move the self-propelled carriage 4 to a desired position and then the chain drive mechanism 25 is operated to move the self-propelled beam carriage 17 to a position P indicated by a chain double-dashed line, the lance beam 8 Protrudes from the through hole 9 for a predetermined length.

Then, by operating the chain drive mechanism 15, the oxygen lance 7 can be made to protrude by the required length as shown by the chain double-dashed line S ₁ .

If necessary, the tilting cylinder device 19 is operated as shown in FIG. 1 to move the oxygen lance 7 as shown by the two-dot chain lines S ₂ and S _3.
By vertically tilting or moving the cylinder device 20 for horizontal rotation as shown in FIG. 2, the two-dot chain lines S ₄ , S ₅
You may rotate right and left like this. In the present invention, this is said to be swingable left and right.

The above-mentioned operation of the oxygen lance 7 can naturally move forward and backward and can be performed simultaneously in the vertical and horizontal directions, so that the oxygen lance 7 can sufficiently cope with the minute movements required for the fusing.

[Effect of device]

The device of the present invention is easy to operate the oxygen lance, and can be freely moved back and forth and up and down, left and right, and it is sufficiently safe and highly safe. In addition, the oxygen supply pipe can be smoothly followed, there are few malfunctions, and there are many practical advantages such as highly efficient work by remote control, so that its economic effect is great.

[Brief description of drawings]

1 and 2 are a schematic side view and a plan view of an apparatus according to an embodiment of the present invention. [Explanation of reference symbols] 1 ... Tundish, 2 ... Steel tap, 3a, 3b ... Track, 4 ... Self-propelled trolley, 5a, 5b ... Rolling wheel, 6 ... Ridge-shaped cover, 6a ... … Front wall, 7 …… Oxygen lance, 8 …… Lance beam, 9 …… Through hole, 10 …… Peep hole, 11 …… Oxygen supply pipe joint, 12 …… Swivel joint, 13 …… Oxygen supply pipe, 14 …… Holding cart, 15 …… Chain drive mechanism,
16 …… Guide rail, 17 …… Self-propelled beam carriage, 18 …… Support pole, 19 …… Tilt cylinder device, 20 …… Left and right turning cylinder device, 21 …… Tilt arm, 22 …… TV camera, 23 …… Drive motor, 24 …… Spray adhesion prevention air injection device, 25 …… Chain drive mechanism

Claims (5)

[Scope of utility model registration request] Claim: What is claimed is: 1. A self-propelled carriage which travels freely on a track laid parallel to the long axis of a tundish via rollers, and a guide rail which is horizontally arranged on the floor of the self-propelled carriage. A self-propelled beam carriage that movably mounts on the guide rail and supports an lance beam that holds an oxygen lance so that it can move back and forth, and a through hole through which the lance beam can project and the through hole. A drape type cover including a splash adhesion preventing air injection device surrounding the hole and a television camera viewing hole, and a wall cover that covers the self-propelled beam carriage and the guide rail, and is fixedly provided on the descent type cover. Smelting of tundish deposits equipped with an oxygen supply pipe joint, a flexible oxygen supply pipe connected between the pipe joint and the oxygen lance, and a television camera fixed to a raised cover near the sight hole Location. 2. The self-propelled beam carriage is provided with a lance beam tilting cylinder device and a lance beam horizontal turning cylinder device, and a support pole for supporting the lance beam so as to be vertically and horizontally swingable. Tundish deposit welding machine. 3. The tundish deposit welding machine according to claim 1, wherein the oxygen supply pipe is configured to be bendable via a swivel joint and is configured to be capable of projecting outward from the through hole of the cover. 4. The tundish deposit welding machine according to claim 1 or 2, wherein the oxygen lance is supported by a trolley beam movably mounted on the lance beam so as to be freely projectable. 5. The tundish deposit ablation apparatus according to claim 1, wherein the oxygen lance is provided with a ceramic nozzle at the tip.