JPH0341883Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is used to measure the bulging of a slab during continuous casting, that is, the swelling of the solidified shell outside the slab due to unsolidified static pressure inside the slab. This invention relates to a bulging measuring device attached to continuous casting equipment.

(Prior art) One of the prior art devices of this type was published in Japanese Patent Publication No. 56-6822.
Examples are disclosed. As shown in FIG. 2, this device includes a guide tube c provided on a main body b supported across two adjacent slab support rolls a,
A touch roller f that contacts the slab e between two rolls is provided at the tip of the detection auxiliary rod d that is advanced and guided into the guide cylinder, and a displacement meter g measures the relative displacement between the guide cylinder and the detection auxiliary rod to measure the relative displacement that occurs in the slab. It measures the bulging caused by

(Problems to be Solved by the Invention) The device of the prior art detects the amount of slab displacement using the detection auxiliary rod d, and detects the amount of slab displacement from the hot slab e through the touch roller f attached to the tip of the rod d. Since the detection auxiliary rod expands due to heat conduction, an error occurs in the amount of displacement, resulting in poor measurement accuracy.

In addition, during continuous casting, the tatsuchi roller f is always in contact with the hottest slab e, so the heat from the slab e may cause partial seizure and welding to the slab e, and the tatsuchi roller f is pulled by the transitioning slab e. There is a risk that it will be rubbed and get caught between the slab support roll a and the slab e, leading to damage.

Furthermore, the Tatsuchi roller f needs to have a rotating structure to prevent the above-mentioned partial seizure from occurring, and a gap is provided between the rotating shaft and the roller section. The heat from piece a caused thermal deformation of the rotating shaft, making it difficult to rotate. If this rotation becomes difficult, there is a risk that the touch roller f will seize on the hot slab a and be rubbed by the moving slab a, leading to damage as described above.

Further, an oxide film is formed on the surface of the slab a, and this peels off and becomes so-called sludge that adheres to the touch roller f, making it impossible for the touch roller f to rotate. Even in this case, there is a risk that the touch roller f may be damaged as described above.

The object of the present invention is to provide a bulging measuring device for continuous casting equipment that can solve these problems of the prior art.

(Means, effects, and embodiments for solving the problems) In the present invention, the object is to cool the detection auxiliary rod, that is, the rod, which is equipped with a tatsuchi roll at the tip, an advance tendency imparting device, and a displacement gauge at the rear, and is made hollow. It is constructed to allow water to flow through it, and is further constructed by providing a small hole at the tip of the hollow rod through which cooling water is injected to cool the Tatsuti Roll.

In other words, the device for measuring bulging in continuous casting equipment of the present invention has a configuration in which, in continuous casting equipment, a touch roller is attached to the tip of a rod that is movably supported by a guide and touches the slab through the interval between slab supporting rolls. , an advancing tendency imparting device and a displacement meter are connected to the rear part, the rod is formed hollow, and a means for introducing and deriving cooling water that communicates with the hollow cavity is provided, and cooling water is supplied to the tip of the hollow rod by a touch roller. It is characterized by having a small hole for direct injection into the direction.

Hereinafter, the present invention will be explained in detail with reference to the embodiment shown in FIG. FIG. 1 shows a plan view of the apparatus according to the present invention.

The slab 1, which has formed a solidified shell in the water-cooled mold, moves while its path is regulated by slab support rolls 2 arranged in the drawing direction.

In order to measure bulging that may occur in slabs due to static pressure of molten steel, a rod 6 is inserted into a cylindrical guide 5 attached to a pedestal 3 via a bracket to support it freely moving forward and backward, and attached to the tip of the rod 6. A touch roller 7 is arranged so as to move and roll in contact with the slab 1 when advanced through the interval between adjacent slab support rolls 2. An air cylinder 8 is connected to the rear of the rod 6 as an advancing tendency imparting device, and a cantilever type displacement meter 9, for example, is attached, and a contact roller 11 at the tip of a lever 10 as a measuring contactor is attached.
contacts one slab support roll 2, which serves as a measurement standard, and rolls as the slab rotates, thus changing the relative displacement between the contact roller 11 and the rod 6, which is retracted due to the arrival of bulging of the slab. 9 in total to measure the amount of bulging.

In particular, in the present invention, the rod 6 is formed into a hollow cylindrical shape, and a cooling water inlet 13 and an outlet 14 communicating with the hollow cavity 12 are provided, and the cooling water inlet and outlet means connected thereto are flexible. Allow cooling water to flow through the connecting pipe. Furthermore, a small hole 15 communicating with the hollow cavity 12 is bored at the tip of the rod 6, so that pressurized cooling water is injected toward the touch roller 7 through the small hole 15.

In the device of the present invention having the above configuration, the rod 6, which is an auxiliary rod that detects the displacement of the touch roller 7 due to bulging, hardly rises in temperature because the conductive heat from the slab 1 is removed by the flow of cooling water. Since the thermal expansion of the rod 6 is not added to the displacement amount given to the displacement meter 9 as an error factor, measurement accuracy is improved. Furthermore, by using the cooling water from the rod 6, the touch roller 7, which is in direct contact with the slab 1, is effectively cooled by the water jetted from the small hole 15, and the cooling water is directly injected to the touch roller 7. The attached sludge is blown off by the water pressure of the cooling water and is prevented from welding to the slab 1, so that the function of this bulging measuring device is maintained.

Although the rod 6 is a movable member and is attached with various equipment, it does not cause large displacement during operation, so there is no difficulty in attaching the cooling water system, and there is no risk that the cooling water system will be damaged by the rod movement. There aren't many.

(Effects of the invention) According to the invention, the bulging measuring device has a high measurement accuracy by adding relatively simple equipment, and also has the effect of stably maintaining this function without welding to the slab. can get.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a bulging measuring device for continuous casting equipment according to an embodiment of the present invention, and FIG. 2 is a side sectional view of a conventional displacement measuring device. 2... Slab support roll, 3... Frame, 5... Guide, 6... Rod, 7... Tatsuchi roller, 8...
...Air cylinder (advancing tendency imparting device), 9...
Displacement meter, 10...Lever, 11...Contact roller,
12...Hollow cavity, 13...Cooling water inlet, 14...
...Cooling water outlet, 15...Small hole, a...Slab support roll, b...Main body, c...Guide tube, d...Detection auxiliary rod, e...Slab, f...Tatsuchi roller, g
...Displacement meter.

Claims (1)

[Scope of utility model registration request] In continuous casting equipment, a touch roller is attached to the tip of the rod, which is supported by a guide so that it can move forward and backward, and touches the slab through the interval between slab support rolls.
An advancing tendency imparting device and a displacement gauge are connected to the rear part, and the rod is formed hollow, and means for introducing and extracting cooling water that communicates with the hollow cavity is provided, and cooling water is directed to the touch roller at the tip of the hollow rod. A device for measuring bulging in continuous casting equipment, which used to be characterized by having small holes for direct injection.