JPH0648940U - Mold for continuous casting with variable width - Google Patents

Abstract

(57) [Summary] [Structure] A continuous casting mold having a variable width, which is a rectangular mold frame 1 and a wide-face mold plate on the opposite side to the reference side, which is provided inside the mold frame 1 via a driving means 7. 4 and the wide-side mold plate 3 on the reference side fixedly provided inside the mold frame 1 facing the wide-side mold plate 4 on the opposite side, and the wide-face mold facing the inside of the mold frame 1 via the driving means 5. It is composed of a pair of narrow surface mold plates 2 and 2 slidably provided between the plates 3 and 4, and protrudes at a predetermined height on both sides of the inner surface 11 of the anti-reference wide surface mold plate 4. A part 12 is provided. [Effect] It is possible to cast slabs having different cross-sectional thicknesses in the same mold without changing the mold, the number of times of mold replacement is reduced, and the width and width are reduced by driving only the wide surface mold plate on the non-reference side. Since the thickness can be changed, the productivity of continuous casting equipment can be improved more than ever.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a continuous casting mold having a variable width.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, as a continuous casting mold whose width can be changed, as shown in FIG. 2, a pair of narrow-faced mold plates 24, 24 and a wide-faced mold plate 25 are provided inside a rectangular mold frame 21 via driving means 22, 23. , 25 are provided so as to be slidably opposed to each other between the wide surface mold plates 25, 25 to which the narrow surface mold plates 24, 24 are opposed.

In order to change the width of the cross-section of the slab in the width-changeable continuous casting mold, first, the wide surface mold plate 25 is slightly retracted by the driving device 23, and the side wall surface of the narrow surface mold plate 24 is changed. Then, the narrow surface mold plate 24, which corresponds to the width direction in the cross section of the slab, is moved forward by the drive device 22 when the width is narrowed and retracted when the width is widened. After moving to a position of a desired width, the wide surface mold plate 25 is again moved forward by the driving device 23 and pressed against the side wall surface of the narrow surface mold plate 24.

Therefore, in the mold having the above-described structure, when continuously casting a slab having a constant cross-sectional thickness, the narrow face mold plate 24 is moved forward or backward to adjust only the width dimension. Since it can be used by itself, it works effectively, but in the actual operation of continuous casting, in general, different slabs with different cross-section thicknesses are produced, so replace with a mold with a different thickness. Often. In such a case, there is a problem that the mold has to be replaced, which requires a great deal of time, and the productivity of the continuous casting equipment is impaired.

Therefore, the present applicant conducted research to improve the above-mentioned problems, and provided a rectangular mold frame 26 and driving means 27, 28 inside the mold frame 26 as shown in FIG. It is composed of a pair of narrow-faced mold plates 29, 29 and wide-faced mold plates 30, 31 that are provided via the narrow-faced mold plates 29, 29, and slides between the narrow-faced mold plates 29, 29 facing each other. We have developed a continuous casting mold 34 that is capable of facing each other and has variable widths that are provided with protrusions 33 of a predetermined height on both sides of the inner surface 32 of each of the facing wide surface mold plates 30 and 31 ( See Japanese Utility Model Publication No. 3-81246).

[0006]

[Problems to be solved by the device]

 However, the mold 34 described above can cast slabs having different cross-sectional thicknesses in the same mold without changing the mold, which reduces the number of mold changes and improves the productivity of continuous casting equipment. However, since the protrusions 33 having a predetermined height are provided on both sides of the inner surface 32 of each of the wide surface mold plates 30 and 31 facing each other, when the thickness of the cross section is changed, both of the wide surface mold plates 30 In addition to having to retreat each of the molds 31 and 31, the wide surface mold plates 30 and 31 of the mold 34 are generally configured such that one side is the reference side 30 and the other is the anti-reference side 31, and the reference position of the wide side mold plate 30 on the reference side is Since the position does not change even if the thickness of the cross section changes, as shown in Fig. 3b, it is necessary to move the mold frame 26 forward by the amount by which the wide side mold plate 30 on the reference side is retracted. Room was found.

The present invention has been made in view of the above circumstances, and an object thereof is a structure capable of easily changing the thickness when casting slabs having different cross-sectional thicknesses in the same mold. It is to provide a continuous casting mold whose width can be changed.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, a width-changeable continuous casting mold according to the present invention comprises a rectangular mold frame, a wide-faced casting mold plate on the opposite side of the mold, which is provided inside the mold frame through a driving means. Sliding between a wide-sided mold plate on the reference side fixedly provided inside the mold frame facing the wide-sided mold plate on the opposite side, and a wide-faced mold plate facing the inside of the mold frame via drive means. And a pair of narrow-faced mold plates provided on the inner surface of the opposite reference-side wide-faced mold plate.

[0009]

[Action]

 According to the width-changeable continuous casting mold of the present invention, only the opposite reference-side wide-faced mold plate of the facing wide-faced mold plates is provided in the mold frame so as to be able to move forward and backward with respect to the reference-side wide-faced mold plate, and the inner surface thereof is also provided. Since the protrusions with a predetermined height are provided on both sides of the mold, when changing the width and thickness of the slab, it is possible to change it by moving only the non-reference side wide surface mold plate forward and backward, especially the thickness change. Makes it unnecessary to move the mold frame, making it easy to change. The thickness can be changed by supporting the narrow-faced mold plate at the protrusion, and in particular, a mold with a slab size, which has conventionally been forced to be replaced frequently, is adopted as a mold having such a structure. As a result, the number of mold changes can be reduced, and the productivity of continuous casting equipment can be further improved.

[0010]

【Example】

 An embodiment according to the present invention will be described below with reference to the drawings. 1A and 1B are explanatory views of a width-changeable continuous casting mold according to the present invention, in which FIG. 1A is a front view before thickness change, and FIG. 1B is a front view after thickness change.

In the drawings, 1 is a rectangular mold frame, 2 is a narrow-faced mold plate, 3 is a reference-side wide-faced mold plate, 4 is an anti-reference-side wide-faced mold plate, 5 is a driving means for the narrow-faced mold plate 2, and 6 is A spacing piece for fixing the reference-side wide-surface mold plate 3 inside the mold frame 1, 7 for driving the anti-reference-side wide-surface mold plate 4, 8 between the outside of the mold frame 1 and the machine base 9 of the continuous casting machine. The positioning device for determining the reference position of the attached reference-side wide-surface mold plate 3 is shown.

In the continuous casting mold 10, the reference side wide surface mold plate 3 is provided inside the rectangular mold frame 1 with the spacing piece 6 interposed and fixed, and the anti-reference wide surface mold plate 4 is attached to the reference side wide surface. A drive means 7 is provided inside the mold frame 1 at a position opposite to the mold plate 3 so as to be movable back and forth. Further, a pair of narrow surface mold plates 2 and 2 are provided inside the mold frame 1 with the drive means 5 interposed. It is configured such that it can be moved forward and backward and slidably provided between the reference side wide surface mold plate 3 and the anti-reference side wide surface mold plate 4. The opposite reference side wide surface mold plate 4 is provided with protrusions 12 having a predetermined height on both sides of the inner surface 11.

Further, the continuous casting mold 10 is set on the machine base 9 and the standard wide surface mold plate 3 is standardized by a positioning device 8 mounted between the outside of the mold frame 1 and the machine base 9. It is adjusted and fixed so that it becomes the position (the position of the distance a between the surface of the machine base 9 and the inner surface 13 of the reference side wide surface mold plate 3). Then, the width of the mold 10 is changed by moving the narrow surface mold plate 2 to a predetermined position by the driving device 5 with the driving device 7 slightly loosening only the non-standard-side wide surface mold plate 4 and then driving. It is performed by tightening the wide reference mold plate 4 on the non-reference side by means 7. To change the thickness, the driving means 7 loosens the anti-reference side wide-face mold plate 4 and the driving means 5 moves the narrow-face mold plate 2 to the projecting portion 12, after which the driving means 7 drives the anti-reference side. It is performed by tightening the wide surface mold plate 4. In this way, the width and thickness can be changed by advancing and retracting only the opposite reference side wide surface mold plate 4, so that the time required for the change can be extremely short and the productivity of the continuous casting equipment can be improved.

For example, in the continuous casting mold 10 with variable width having the above configuration, the narrow-faced mold plates 2 and 2 are configured to have a width of b ₁ , and the narrow-faced mold plates 2 and 2 are in the range of a _{1 to} a ₂ . By changing the width inside, it is possible to cast a slab in the range of thickness b ₁ × width a _{1 to} a ₂ . Furthermore, the height of the protrusion 12 of the anti-reference side wide-face mold plate 4 is set to c, and when the narrow-face mold plates 2 and 2 are retracted, only the anti-reference-side wide-face mold plate 4 is retracted and the narrow-face mold plate 4 is retracted. 2, 2 (see FIG. 1b) by clamping between the inner surface 13 and the projecting portion 12 of the anti-reference-side broad surface mold plate 4 of the reference-side broad surface mold plate 3, high protrusions 12 to the thickness of the b ₁ With the thickness b _{2 obtained} by adding the thickness c, it is possible to cast a slab having the size of the inner method a ₃ of the protrusion 12.

[0015]

[Effect of device]

 As described above, according to the continuous casting mold with variable width according to the present invention, it is possible to cast slabs having different cross-sectional thicknesses in the same mold without replacing the mold, and the mold replacement Since the number of times is reduced and the width and thickness can be changed by driving only the wide surface mold plate on the non-reference side forward and backward, the productivity of the continuous casting equipment can be improved more than ever.

[Brief description of drawings]

FIG. 1 is an explanatory view of a width-changeable continuous casting mold according to the present invention, in which (a) is a front view before thickness change and (b) is a front view after thickness change.

FIG. 2 is an explanatory diagram of a conventional technique.

FIG. 3 is an explanatory view of a width-changeable continuous casting mold of the prior application, (a) is a front view before thickness change, and (b) is a front view after thickness change.

[Explanation of symbols]

1: Mold frame 2: Narrow surface mold plate
3: Reference side wide surface mold plate 4: Non-reference side wide surface mold plate 5, 7: Driving means
6: Spacing piece 8: Positioning device 9: Machine stand 1
0: Continuous casting mold 11, 13: Inner surface 12: Projection

Claims (1)

[Scope of utility model registration request] 1. A square mold frame, an anti-reference side wide-face mold plate provided inside the mold frame via a drive means, and a mold frame fixed to the inside of the mold frame facing the anti-reference side wide-face mold plate. A wide-sided mold plate on the reference side provided, and a pair of narrow-faced mold plates slidably provided between the wide-faced mold plates facing each other inside the mold frame via the driving means, and the anti-reference A continuous casting mold having a variable width, characterized in that projections having a predetermined height are provided on both sides of an inner surface of a wide side surface mold plate.